Merge branch 'master' of https://github.com/rails/rails

327 files changed, 11931 insertions, 7310 deletions

diff --git a/actionpack/CHANGELOG b/actionpack/CHANGELOG
index 81abb8b5f1..5ab92c8cfc 100644
--- a/actionpack/CHANGELOG
+++ b/actionpack/CHANGELOG
@@ -1,4 +1,74 @@
-*Rails 3.0.0 [release candidate] (July 26th, 2010)*
+*Rails 3.1.0 (unreleased)*
+
+* Sensitive query string parameters (specified in config.filter_parameters) will now be filtered out from the request paths in the log file. [Prem Sichanugrist, fxn]
+
+* URL parameters which return false for to_param now appear in the query string (previously they were removed) [Andrew White]
+
+* URL parameters which return nil for to_param are now removed from the query string [Andrew White]
+
+* ActionDispatch::MiddlewareStack now uses composition over inheritance. It is
+no longer an array which means there may be methods missing that were not
+tested.
+
+* Add an :authenticity_token option to form_tag for custom handling or to omit the token (pass :authenticity_token => false).  [Jakub Kuźma, Igor Wiedler]
+
+* HTML5 button_tag helper. [Rizwan Reza]
+
+* Template lookup now searches further up in the inheritance chain. [Artemave]
+
+* Brought back config.action_view.cache_template_loading, which allows to decide whether templates should be cached or not. [Piotr Sarnacki]
+
+* url_for and named url helpers now accept :subdomain and :domain as options, [Josh Kalderimis]
+
+* The redirect route method now also accepts a hash of options which will only change the parts of the url in question, or an object which responds to call, allowing for redirects to be reused (check the documentation for examples). [Josh Kalderimis]
+
+* Added config.action_controller.include_all_helpers. By default 'helper :all' is done in ActionController::Base, which includes all the helpers by default. Setting include_all_helpers to false will result in including only application_helper and helper corresponding to controller (like foo_helper for foo_controller). [Piotr Sarnacki]
+
+* Added a convenience idiom to generate HTML5 data-* attributes in tag helpers from a :data hash of options:
+
+    tag("div", :data => {:name => 'Stephen', :city_state => %w(Chicago IL)})
+    # => <div data-name="Stephen" data-city-state="[&quot;Chicago&quot;,&quot;IL&quot;]" />
+
+  Keys are dasherized. Values are JSON-encoded, except for strings and symbols. [Stephen Celis]
+
+* Added render :once. You can pass either a string or an array of strings and Rails will ensure they each of them are rendered just once. [José Valim]
+
+* Deprecate old template handler API. The new API simply requires a template handler to respond to call. [José Valim]
+
+* :rhtml and :rxml were finally removed as template handlers. [José Valim]
+
+* Moved etag responsibility from ActionDispatch::Response to the middleware stack. [José Valim]
+
+* Rely on Rack::Session stores API for more compatibility across the Ruby world. This is backwards incompatible since Rack::Session expects #get_session to accept 4 arguments and requires #destroy_session instead of simply #destroy. [José Valim]
+
+* file_field automatically adds :multipart => true to the enclosing form. [Santiago Pastorino]
+
+* Renames csrf_meta_tag -> csrf_meta_tags, and aliases csrf_meta_tag for backwards compatibility. [fxn]
+
+* Add Rack::Cache to the default stack. Create a Rails store that delegates to the Rails cache, so by default, whatever caching layer you are using will be used for HTTP caching. Note that Rack::Cache will be used if you use #expires_in, #fresh_when or #stale with :public => true. Otherwise, the caching rules will apply to the browser only. [Yehuda Katz, Carl Lerche]
+
+
+*Rails 3.0.2 (unreleased)*
+
+* The helper number_to_currency accepts a new :negative_format option to be able to configure how to render negative amounts. [Don Wilson]
+
+
+*Rails 3.0.1 (October 15, 2010)*
+
+* No Changes, just a version bump.
+
+
+*Rails 3.0.0 (August 29, 2010)*
+
+* password_field renders with nil value by default making the use of passwords secure by default, if you want to render you should do for instance f.password_field(:password, :value => @user.password) [Santiago Pastorino]
+
+* Symbols and strings in routes should yield the same behavior. Note this may break existing apps that were using symbols with the new routes API. [José Valim]
+
+* Add clear_helpers as a way to clean up all helpers added to this controller, maintaining just the helper with the same name as the controller. [José Valim]
+
+* Support routing constraints in functional tests. [Andrew White]
+
+* Add a header that tells Internet Explorer (all versions) to use the best available standards support. [Yehuda Katz]
 
 * Allow stylesheet/javascript extensions to be changed through railties. [Josh Kalderimis]
 
@@ -26,16 +96,13 @@
         resources :comments
       end
     end
-    
+
     You can now use comment_path for /comments/1 instead of post_comment_path for /posts/1/comments/1.
 
 * Add support for multi-subdomain session by setting cookie host in session cookie so you can share session between www.example.com, example.com and user.example.com. #4818 [Guillermo Álvarez]
 
 * Removed textilize, textilize_without_paragraph and markdown helpers. [Santiago Pastorino]
 
-
-*Rails 3.0.0 [beta 4] (June 8th, 2010)*
-
 * Remove middleware laziness [José Valim]
 
 * Make session stores rely on request.cookie_jar and change set_session semantics to return the cookie value instead of a boolean. [José Valim]
@@ -52,9 +119,6 @@
 
 * Changed translate helper so that it doesn’t mark every translation as safe HTML. Only keys with a "_html" suffix and keys named "html" are considered to be safe HTML. All other translations are left untouched. [Craig Davey]
 
-
-*Rails 3.0.0 [beta 3] (April 13th, 2010)*
-
 * New option :as added to form_for allows to change the object name. The old <% form_for :client, @post %> becomes <% form_for @post, :as => :client %> [spastorino]
 
 * Removed verify method in controllers. [JV]
@@ -89,9 +153,6 @@
   "HEAD" and #request_method returns "GET" in HEAD requests). This
   is for compatibility with Rack::Request [YK]
 
-
-*Rails 3.0.0 [beta 2] (April 1st, 2010)*
-
 * #concat is now deprecated in favor of using <%= %> helpers [YK]
 
 * Block helpers now return Strings, so you can use <%= form_for @foo do |f| %>.
@@ -110,7 +171,7 @@
 * ActionDispatch::Request#content_type returns a String to be compatible with
   Rack::Request. Use #content_mime_type for the Mime::Type instance [YK]
 
-* Updated Prototype to 1.6.1 and Scriptaculous to 1.8.3 [ML] 
+* Updated Prototype to 1.6.1 and Scriptaculous to 1.8.3 [ML]
 
 * Change the preferred way that URL helpers are included into a class[YK & CL]
 
@@ -120,9 +181,6 @@
     # for just url_for
     include Rails.application.router.url_for
 
-
-*Rails 3.0.0 [beta 1] (February 4, 2010)*
-
 * Fixed that PrototypeHelper#update_page should return html_safe [DHH]
 
 * Fixed that much of DateHelper wouldn't return html_safe? strings [DHH]
diff --git a/actionpack/MIT-LICENSE b/actionpack/MIT-LICENSE
index a345a2419d..7ad1051066 100644
--- a/actionpack/MIT-LICENSE
+++ b/actionpack/MIT-LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2010 David Heinemeier Hansson
+Copyright (c) 2004-2011 David Heinemeier Hansson
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
diff --git a/actionpack/README.rdoc b/actionpack/README.rdoc
index b297ceb0e2..3661d27d51 100644
--- a/actionpack/README.rdoc
+++ b/actionpack/README.rdoc
@@ -102,10 +102,10 @@ A short rundown of some of the major features:
     class WeblogController < ActionController::Base
       # filters as methods
       before_filter :authenticate, :cache, :audit
-      
+
       # filter as a proc
       after_filter { |c| c.response.body = Gzip::compress(c.response.body) }
-      
+
       # class filter
       after_filter LocalizeFilter
 
@@ -262,7 +262,7 @@ methods:
     layout "weblog/layout"
 
     def index
-      @posts = Post.find(:all)
+      @posts = Post.all
     end
 
     def show
@@ -323,7 +323,7 @@ The latest version of Action Pack can be installed with Rubygems:
 
 Source code can be downloaded as part of the Rails project on GitHub
 
-* http://github.com/rails/rails/tree/master/actionpack/
+* https://github.com/rails/rails/tree/master/actionpack/
 
 
 == License
diff --git a/actionpack/RUNNING_UNIT_TESTS b/actionpack/RUNNING_UNIT_TESTS
index 95a8bc7497..1e3ba7abe7 100644
--- a/actionpack/RUNNING_UNIT_TESTS
+++ b/actionpack/RUNNING_UNIT_TESTS
@@ -1,22 +1,25 @@
 == Running with Rake
 
 The easiest way to run the unit tests is through Rake. The default task runs
-the entire test suite for all classes. For more information, checkout the 
+the entire test suite for all classes. For more information, checkout the
 full array of rake tasks with "rake -T"
 
 Rake can be found at http://rake.rubyforge.org
 
 == Running by hand
 
-If you only want to run a single test suite, or don't want to bother with Rake,
-you can do so with something like:
+To run a single test suite
 
-   ruby -Itest test/controller/base_tests.rb
+   rake test TEST=path/to/test.rb
 
-== Dependency on ActiveRecord and database setup
+which can be further narrowed down to one test:
+
+   rake test TEST=path/to/test.rb TESTOPTS="--name=test_something"
+
+== Dependency on Active Record and database setup
 
 Test cases in the test/controller/active_record/ directory depend on having
-activerecord and sqlite installed. If ActiveRecord is not in 
+activerecord and sqlite installed. If Active Record is not in
 actionpack/../activerecord directory, or the sqlite rubygem is not installed,
 these tests are skipped.
 
diff --git a/actionpack/Rakefile b/actionpack/Rakefile
index 4af8ea167a..9030db9f7a 100644..100755
--- a/actionpack/Rakefile
+++ b/actionpack/Rakefile
@@ -1,8 +1,5 @@
-gem 'rdoc', '>= 2.5.9'
-require 'rdoc'
-require 'rake'
+#!/usr/bin/env rake
 require 'rake/testtask'
-require 'rdoc/task'
 require 'rake/packagetask'
 require 'rake/gempackagetask'
 
@@ -21,7 +18,8 @@ Rake::TestTask.new(:test_action_pack) do |t|
   # this will not happen automatically and the tests (as a whole) will error
   t.test_files = Dir.glob('test/{abstract,controller,dispatch,template}/**/*_test.rb').sort
 
-  # t.warning = true
+  t.warning = true
+  t.verbose = true
 end
 
 namespace :test do
@@ -36,24 +34,6 @@ Rake::TestTask.new(:test_active_record_integration) do |t|
   t.test_files = Dir.glob("test/activerecord/*_test.rb")
 end
 
-# Genereate the RDoc documentation
-
-RDoc::Task.new { |rdoc|
-  rdoc.rdoc_dir = 'doc'
-  rdoc.title    = "Action Pack -- On rails from request to response"
-  rdoc.options << '--charset' << 'utf-8'
-  rdoc.options << '-f' << 'horo'
-  rdoc.options << '--main' << 'README.rdoc'
-  if ENV['DOC_FILES']
-    rdoc.rdoc_files.include(ENV['DOC_FILES'].split(/,\s*/))
-  else
-    rdoc.rdoc_files.include('README.rdoc', 'RUNNING_UNIT_TESTS', 'CHANGELOG')
-    rdoc.rdoc_files.include(Dir['lib/**/*.rb'] -
-                            Dir['lib/*/vendor/**/*.rb'])
-    rdoc.rdoc_files.exclude('lib/actionpack.rb')
-  end
-}
-
 spec = eval(File.read('actionpack.gemspec'))
 
 Rake::GemPackageTask.new(spec) do |p|
diff --git a/actionpack/actionpack.gemspec b/actionpack/actionpack.gemspec
index 99deff234c..f6bc5e0d37 100644
--- a/actionpack/actionpack.gemspec
+++ b/actionpack/actionpack.gemspec
@@ -19,13 +19,14 @@ Gem::Specification.new do |s|
 
   s.has_rdoc = true
 
-  s.add_dependency('activesupport', version)
-  s.add_dependency('activemodel',   version)
-  s.add_dependency('builder',       '~> 2.1.2')
-  s.add_dependency('i18n',          '~> 0.4.1')
-  s.add_dependency('rack',          '~> 1.2.1')
-  s.add_dependency('rack-test',     '~> 0.5.4')
-  s.add_dependency('rack-mount',    '~> 0.6.9')
-  s.add_dependency('tzinfo',        '~> 0.3.22')
-  s.add_dependency('erubis',        '~> 2.6.6')
+  s.add_dependency('activesupport',    version)
+  s.add_dependency('activemodel',      version)
+  s.add_dependency('rack-cache',       '~> 1.0.0')
+  s.add_dependency('builder',          '~> 3.0.0')
+  s.add_dependency('i18n',             '~> 0.5.0')
+  s.add_dependency('rack',             '~> 1.2.1')
+  s.add_dependency('rack-test',        '~> 0.5.7')
+  s.add_dependency('rack-mount',       '~> 0.6.13')
+  s.add_dependency('tzinfo',           '~> 0.3.23')
+  s.add_dependency('erubis',           '~> 2.6.6')
 end
diff --git a/actionpack/lib/abstract_controller.rb b/actionpack/lib/abstract_controller.rb
index c565c940a1..cc5878c88e 100644
--- a/actionpack/lib/abstract_controller.rb
+++ b/actionpack/lib/abstract_controller.rb
@@ -2,6 +2,7 @@ activesupport_path = File.expand_path('../../../activesupport/lib', __FILE__)
 $:.unshift(activesupport_path) if File.directory?(activesupport_path) && !$:.include?(activesupport_path)
 
 require 'action_pack'
+require 'active_support/concern'
 require 'active_support/ruby/shim'
 require 'active_support/dependencies/autoload'
 require 'active_support/core_ext/class/attribute'
@@ -23,4 +24,5 @@ module AbstractController
   autoload :Translation
   autoload :AssetPaths
   autoload :ViewPaths
+  autoload :UrlFor
 end
diff --git a/actionpack/lib/abstract_controller/base.rb b/actionpack/lib/abstract_controller/base.rb
index db0a6736e0..c384fd0978 100644
--- a/actionpack/lib/abstract_controller/base.rb
+++ b/actionpack/lib/abstract_controller/base.rb
@@ -6,9 +6,14 @@ module AbstractController
   class Error < StandardError; end
   class ActionNotFound < StandardError; end
 
+  # <tt>AbstractController::Base</tt> is a low-level API. Nobody should be
+  # using it directly, and subclasses (like ActionController::Base) are
+  # expected to provide their own +render+ method, since rendering means
+  # different things depending on the context.  
   class Base
     attr_internal :response_body
     attr_internal :action_name
+    attr_internal :formats
 
     include ActiveSupport::Configurable
     extend ActiveSupport::DescendantsTracker
@@ -26,23 +31,21 @@ module AbstractController
       # A list of all internal methods for a controller. This finds the first
       # abstract superclass of a controller, and gets a list of all public
       # instance methods on that abstract class. Public instance methods of
-      # a controller would normally be considered action methods, so we
-      # are removing those methods on classes declared as abstract
-      # (ActionController::Metal and ActionController::Base are defined
-      # as abstract)
+      # a controller would normally be considered action methods, so methods
+      # declared on abstract classes are being removed.
+      # (ActionController::Metal and ActionController::Base are defined as abstract)
       def internal_methods
         controller = self
         controller = controller.superclass until controller.abstract?
         controller.public_instance_methods(true)
       end
 
-      # The list of hidden actions to an empty Array. Defaults to an
-      # empty Array. This can be modified by other modules or subclasses
+      # The list of hidden actions to an empty array. Defaults to an
+      # empty array. This can be modified by other modules or subclasses
       # to specify particular actions as hidden.
       #
       # ==== Returns
-      # Array[String]:: An array of method names that should not be
-      #                 considered actions.
+      # * <tt>array</tt> - An array of method names that should not be considered actions.
       def hidden_actions
         []
       end
@@ -54,18 +57,17 @@ module AbstractController
       # itself. Finally, #hidden_actions are removed.
       #
       # ==== Returns
-      # Array[String]:: A list of all methods that should be considered
-      #                 actions.
+      # * <tt>array</tt> - A list of all methods that should be considered actions.
       def action_methods
         @action_methods ||= begin
           # All public instance methods of this class, including ancestors
-          methods = public_instance_methods(true).map { |m| m.to_s }.to_set -
+          methods = (public_instance_methods(true) -
             # Except for public instance methods of Base and its ancestors
-            internal_methods.map { |m| m.to_s } +
+            internal_methods +
             # Be sure to include shadowed public instance methods of this class
-            public_instance_methods(false).map { |m| m.to_s } -
+            public_instance_methods(false)).uniq.map { |x| x.to_s } -
             # And always exclude explicitly hidden actions
-            hidden_actions
+            hidden_actions.to_a
 
           # Clear out AS callback method pollution
           methods.reject { |method| method =~ /_one_time_conditions/ }
@@ -84,7 +86,7 @@ module AbstractController
       # controller_name.
       #
       # ==== Returns
-      # String
+      # * <tt>string</tt>
       def controller_path
         @controller_path ||= name.sub(/Controller$/, '').underscore unless anonymous?
       end
@@ -104,12 +106,12 @@ module AbstractController
     # ActionNotFound error is raised.
     #
     # ==== Returns
-    # self
+    # * <tt>self</tt>
     def process(action, *args)
       @_action_name = action_name = action.to_s
 
       unless action_name = method_for_action(action_name)
-        raise ActionNotFound, "The action '#{action}' could not be found for #{self.class.name}" 
+        raise ActionNotFound, "The action '#{action}' could not be found for #{self.class.name}"
       end
 
       @_response_body = nil
@@ -133,10 +135,10 @@ module AbstractController
       # can be considered an action.
       #
       # ==== Parameters
-      # name<String>:: The name of an action to be tested
+      # * <tt>name</tt> - The name of an action to be tested
       #
       # ==== Returns
-      # TrueClass, FalseClass
+      # * <tt>TrueClass</tt>, <tt>FalseClass</tt>
       def action_method?(name)
         self.class.action_methods.include?(name)
       end
@@ -180,11 +182,11 @@ module AbstractController
       # returns nil, an ActionNotFound exception will be raised.
       #
       # ==== Parameters
-      # action_name<String>:: An action name to find a method name for
+      # * <tt>action_name</tt> - An action name to find a method name for
       #
       # ==== Returns
-      # String:: The name of the method that handles the action
-      # nil::    No method name could be found. Raise ActionNotFound.
+      # * <tt>string</tt> - The name of the method that handles the action
+      # * <tt>nil</tt>    - No method name could be found. Raise ActionNotFound.
       def method_for_action(action_name)
         if action_method?(action_name) then action_name
         elsif respond_to?(:action_missing, true) then "_handle_action_missing"
diff --git a/actionpack/lib/abstract_controller/callbacks.rb b/actionpack/lib/abstract_controller/callbacks.rb
index 67efeb7063..1943ca4436 100644
--- a/actionpack/lib/abstract_controller/callbacks.rb
+++ b/actionpack/lib/abstract_controller/callbacks.rb
@@ -13,8 +13,8 @@ module AbstractController
 
     # Override AbstractController::Base's process_action to run the
     # process_action callbacks around the normal behavior.
-    def process_action(method_name)
-      run_callbacks(:process_action, method_name) do
+    def process_action(method_name, *args)
+      run_callbacks(:process_action, action_name) do
         super
       end
     end
@@ -28,9 +28,8 @@ module AbstractController
       # a Rails process.
       #
       # ==== Options
-      # :only<#to_s>:: The callback should be run only for this action
-      # :except<#to_s>:: The callback should be run for all actions
-      #   except this action
+      # * <tt>only</tt>   - The callback should be run only for this action
+      # * <tt>except<tt>  - The callback should be run for all actions except this action
       def _normalize_callback_options(options)
         if only = options[:only]
           only = Array(only).map {|o| "action_name == '#{o}'"}.join(" || ")
@@ -45,7 +44,7 @@ module AbstractController
       # Skip before, after, and around filters matching any of the names
       #
       # ==== Parameters
-      # *names<Object>:: A list of valid names that could be used for
+      # * <tt>names</tt> - A list of valid names that could be used for
       #   callbacks. Note that skipping uses Ruby equality, so it's
       #   impossible to skip a callback defined using an anonymous proc
       #   using #skip_filter
@@ -60,13 +59,13 @@ module AbstractController
       # the normalization across several methods that use it.
       #
       # ==== Parameters
-      # callbacks<Array[*Object, Hash]>:: A list of callbacks, with an optional
+      # * <tt>callbacks</tt> - An array of callbacks, with an optional
       #   options hash as the last parameter.
-      # block<Proc>:: A proc that should be added to the callbacks.
+      # * <tt>block</tt>    - A proc that should be added to the callbacks.
       #
       # ==== Block Parameters
-      # name<Symbol>:: The callback to be added
-      # options<Hash>:: A list of options to be used when adding the callback
+      # * <tt>name</tt>     - The callback to be added
+      # * <tt>options</tt>  - A hash of options to be used when adding the callback
       def _insert_callbacks(callbacks, block)
         options = callbacks.last.is_a?(Hash) ? callbacks.pop : {}
         _normalize_callback_options(options)
@@ -84,6 +83,7 @@ module AbstractController
           # for details on the allowed parameters.
           def #{filter}_filter(*names, &blk)
             _insert_callbacks(names, blk) do |name, options|
+              options[:if] = (Array.wrap(options[:if]) << "!halted") if #{filter == :after}
               set_callback(:process_action, :#{filter}, name, options)
             end
           end
@@ -92,6 +92,7 @@ module AbstractController
           # for details on the allowed parameters.
           def prepend_#{filter}_filter(*names, &blk)
             _insert_callbacks(names, blk) do |name, options|
+              options[:if] = (Array.wrap(options[:if]) << "!halted") if #{filter == :after}
               set_callback(:process_action, :#{filter}, name, options.merge(:prepend => true))
             end
           end
diff --git a/actionpack/lib/abstract_controller/helpers.rb b/actionpack/lib/abstract_controller/helpers.rb
index 4374b439d0..20f8601a8e 100644
--- a/actionpack/lib/abstract_controller/helpers.rb
+++ b/actionpack/lib/abstract_controller/helpers.rb
@@ -9,6 +9,9 @@ module AbstractController
     included do
       class_attribute :_helpers
       self._helpers = Module.new
+
+      class_attribute :_helper_methods
+      self._helper_methods = Array.new
     end
 
     module ClassMethods
@@ -40,10 +43,13 @@ module AbstractController
       #  <% if logged_in? -%>Welcome, <%= current_user.name %><% end -%>
       #
       # ==== Parameters
-      # meths<Array[#to_s]>:: The name of a method on the controller
+      # * <tt>method[, method]</tt> - A name or names of a method on the controller
       #   to be made available on the view.
       def helper_method(*meths)
-        meths.flatten.each do |meth|
+        meths.flatten!
+        self._helper_methods += meths
+
+        meths.each do |meth|
           _helpers.class_eval <<-ruby_eval, __FILE__, __LINE__ + 1
             def #{meth}(*args, &blk)
               controller.send(%(#{meth}), *args, &blk)
@@ -55,8 +61,8 @@ module AbstractController
       # The +helper+ class method can take a series of helper module names, a block, or both.
       #
       # ==== Parameters
-      # *args<Array[Module, Symbol, String, :all]>
-      # block<Block>:: A block defining helper methods
+      # * <tt>*args</tt> - Module, Symbol, String, :all
+      # * <tt>block</tt> - A block defining helper methods
       #
       # ==== Examples
       # When the argument is a module it will be included directly in the template class.
@@ -95,12 +101,23 @@ module AbstractController
         _helpers.module_eval(&block) if block_given?
       end
 
+      # Clears up all existing helpers in this class, only keeping the helper
+      # with the same name as this class.
+      def clear_helpers
+        inherited_helper_methods = _helper_methods
+        self._helpers = Module.new
+        self._helper_methods = Array.new
+
+        inherited_helper_methods.each { |meth| helper_method meth }
+        default_helper_module! unless anonymous?
+      end
+
       private
       # Makes all the (instance) methods in the helper module available to templates
       # rendered through this controller.
       #
       # ==== Parameters
-      # mod<Module>:: The module to include into the current helper module
+      # * <tt>module</tt> - The module to include into the current helper module
       #   for the class
       def add_template_helper(mod)
         _helpers.module_eval { include mod }
@@ -118,10 +135,10 @@ module AbstractController
       # are returned.
       #
       # ==== Parameters
-      # args<Array[String, Symbol, Module]>:: A list of helpers
+      # * <tt>args</tt> - An array of helpers
       #
       # ==== Returns
-      # Array[Module]:: A normalized list of modules for the list of
+      # * <tt>Array</tt> - A normalized list of modules for the list of
       #   helpers provided.
       def modules_for_helpers(args)
         args.flatten.map! do |arg|
diff --git a/actionpack/lib/abstract_controller/layouts.rb b/actionpack/lib/abstract_controller/layouts.rb
index 5cd7a90ab5..4ee54474cc 100644
--- a/actionpack/lib/abstract_controller/layouts.rb
+++ b/actionpack/lib/abstract_controller/layouts.rb
@@ -114,11 +114,13 @@ module AbstractController
   #
   #   class WeblogController < ActionController::Base
   #     layout proc{ |controller| controller.logged_in? ? "writer_layout" : "reader_layout" }
+  #   end
   #
   # Of course, the most common way of specifying a layout is still just as a plain template name:
   #
   #   class WeblogController < ActionController::Base
   #     layout "weblog_standard"
+  #   end
   #
   # If no directory is specified for the template name, the template will by default be looked for in <tt>app/views/layouts/</tt>.
   # Otherwise, it will be looked up relative to the template root.
@@ -183,7 +185,7 @@ module AbstractController
         # layout.
         #
         # ==== Returns
-        # Boolean:: True if the action has a layout, false otherwise.
+        # * <tt> Boolean</tt> - True if the action has a layout, false otherwise.
         def action_has_layout?
           return unless super
 
@@ -209,11 +211,11 @@ module AbstractController
       # true::   raise an ArgumentError
       #
       # ==== Parameters
-      # layout<String, Symbol, false)>:: The layout to use.
+      # * <tt>String, Symbol, false</tt> - The layout to use.
       #
       # ==== Options (conditions)
-      # :only<#to_s, Array[#to_s]>:: A list of actions to apply this layout to.
-      # :except<#to_s, Array[#to_s]>:: Apply this layout to all actions but this one
+      # * :only   - A list of actions to apply this layout to.
+      # * :except - Apply this layout to all actions but this one.
       def layout(layout, conditions = {})
         include LayoutConditions unless conditions.empty?
 
@@ -228,18 +230,15 @@ module AbstractController
       # value of this method.
       #
       # ==== Returns
-      # String:: A template name
+      # * <tt>String</tt> - A template name
       def _implied_layout_name
         controller_path
       end
 
-      # Takes the specified layout and creates a _layout method to be called
-      # by _default_layout
+      # Creates a _layout method to be called by _default_layout .
       #
-      # If there is no explicit layout specified:
-      # If a layout is found in the view paths with the controller's
-      # name, return that string. Otherwise, use the superclass'
-      # layout (which might also be implied)
+      # If a layout is not explicitly mentioned then look for a layout with the controller's name.
+      # if nothing is found then try same procedure to find super class's layout.
       def _write_layout_method
         remove_possible_method(:_layout)
 
@@ -266,11 +265,11 @@ module AbstractController
           raise ArgumentError, "Layouts must be specified as a String, Symbol, false, or nil"
         when nil
           if name
-            _prefix = "layouts" unless _implied_layout_name =~ /\blayouts/
+            _prefixes = _implied_layout_name =~ /\blayouts/ ? [] : ["layouts"]
 
             self.class_eval <<-RUBY, __FILE__, __LINE__ + 1
               def _layout
-                if template_exists?("#{_implied_layout_name}", #{_prefix.inspect})
+                if template_exists?("#{_implied_layout_name}", #{_prefixes.inspect})
                   "#{_implied_layout_name}"
                 else
                   super
@@ -313,8 +312,8 @@ module AbstractController
     # the name type.
     #
     # ==== Parameters
-    # name<String|TrueClass|FalseClass|Symbol>:: The name of the template
-    # details<Hash{Symbol => Object}>:: A list of details to restrict
+    # * <tt>name</tt> - The name of the template
+    # * <tt>details</tt> - A list of details to restrict
     #   the lookup to. By default, layout lookup is limited to the
     #   formats specified for the current request.
     def _layout_for_option(name)
@@ -333,20 +332,19 @@ module AbstractController
     # Optionally raises an exception if the layout could not be found.
     #
     # ==== Parameters
-    # details<Hash>:: A list of details to restrict the search by. This
+    # * <tt>details</tt> - A list of details to restrict the search by. This
     #   might include details like the format or locale of the template.
-    # require_layout<Boolean>:: If this is true, raise an ArgumentError
+    # * <tt>require_logout</tt> - If this is true, raise an ArgumentError
     #   with details about the fact that the exception could not be
     #   found (defaults to false)
     #
     # ==== Returns
-    # Template:: The template object for the default layout (or nil)
+    # * <tt>template</tt> - The template object for the default layout (or nil)
     def _default_layout(require_layout = false)
       begin
         layout_name = _layout if action_has_layout?
       rescue NameError => e
-        raise NoMethodError,
-          "You specified #{@_layout.inspect} as the layout, but no such method was found"
+        raise e, "Could not render layout: #{e.message}"
       end
 
       if require_layout && action_has_layout? && !layout_name
diff --git a/actionpack/lib/abstract_controller/railties/routes_helpers.rb b/actionpack/lib/abstract_controller/railties/routes_helpers.rb
new file mode 100644
index 0000000000..dec1e9d6d9
--- /dev/null
+++ b/actionpack/lib/abstract_controller/railties/routes_helpers.rb
@@ -0,0 +1,18 @@
+module AbstractController
+  module Railties
+    module RoutesHelpers
+      def self.with(routes)
+        Module.new do
+          define_method(:inherited) do |klass|
+            super(klass)
+            if namespace = klass.parents.detect {|m| m.respond_to?(:_railtie) }
+              klass.send(:include, namespace._railtie.routes.url_helpers)
+            else
+              klass.send(:include, routes.url_helpers)
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/abstract_controller/rendering.rb b/actionpack/lib/abstract_controller/rendering.rb
index b81d5954eb..691310d5d2 100644
--- a/actionpack/lib/abstract_controller/rendering.rb
+++ b/actionpack/lib/abstract_controller/rendering.rb
@@ -12,16 +12,16 @@ module AbstractController
 
   # This is a class to fix I18n global state. Whenever you provide I18n.locale during a request,
   # it will trigger the lookup_context and consequently expire the cache.
-  # TODO Add some deprecation warnings to remove I18n.locale from controllers
   class I18nProxy < ::I18n::Config #:nodoc:
-    attr_reader :i18n_config, :lookup_context
+    attr_reader :original_config, :lookup_context
 
-    def initialize(i18n_config, lookup_context)
-      @i18n_config, @lookup_context = i18n_config, lookup_context
+    def initialize(original_config, lookup_context)
+      original_config = original_config.original_config if original_config.respond_to?(:original_config)
+      @original_config, @lookup_context = original_config, lookup_context
     end
 
     def locale
-      @i18n_config.locale
+      @original_config.locale
     end
 
     def locale=(value)
@@ -47,19 +47,34 @@ module AbstractController
         @view_context_class ||= begin
           controller = self
           Class.new(ActionView::Base) do
+            if controller.respond_to?(:_routes) && controller._routes
+              include controller._routes.url_helpers
+              include controller._routes.mounted_helpers
+            end
+
             if controller.respond_to?(:_helpers)
               include controller._helpers
 
-              if controller.respond_to?(:_routes)
-                include controller._routes.url_helpers
-              end
-
               # TODO: Fix RJS to not require this
               self.helpers = controller._helpers
             end
           end
         end
       end
+
+      def parent_prefixes
+        @parent_prefixes ||= begin
+          parent_controller = superclass
+          prefixes = []
+
+          until parent_controller.abstract?
+            prefixes << parent_controller.controller_path
+            parent_controller = parent_controller.superclass
+          end
+
+          prefixes
+        end
+      end
     end
 
     attr_writer :view_context_class
@@ -98,7 +113,7 @@ module AbstractController
     def render_to_string(*args, &block)
       options = _normalize_args(*args, &block)
       _normalize_options(options)
-      render_to_body(options)
+      render_to_body(options).tap { self.response_body = nil }
     end
 
     # Raw rendering of a template to a Rack-compatible body.
@@ -114,12 +129,15 @@ module AbstractController
       view_context.render(options)
     end
 
-    # The prefix used in render "foo" shortcuts.
-    def _prefix
-      controller_path
+    # The prefixes used in render "foo" shortcuts.
+    def _prefixes
+      @_prefixes ||= begin
+        parent_prefixes = self.class.parent_prefixes
+        parent_prefixes.dup.unshift(controller_path)
+      end
     end
 
-  private
+    private
 
     # This method should return a hash with assigns.
     # You can overwrite this configuration per controller.
@@ -128,7 +146,7 @@ module AbstractController
       hash = {}
       variables  = instance_variable_names
       variables -= protected_instance_variables if respond_to?(:protected_instance_variables)
-      variables.each { |name| hash[name.to_s[1..-1]] = instance_variable_get(name) }
+      variables.each { |name| hash[name.to_s[1, name.length]] = instance_variable_get(name) }
       hash
     end
 
@@ -138,13 +156,13 @@ module AbstractController
       case action
       when NilClass
       when Hash
-        options, action = action, nil
+        options = action
       when String, Symbol
         action = action.to_s
         key = action.include?(?/) ? :file : :action
         options[key] = action
       else
-        options.merge!(:partial => action)
+        options[:partial] = action
       end
 
       options
@@ -155,8 +173,8 @@ module AbstractController
         options[:partial] = action_name
       end
 
-      if (options.keys & [:partial, :file, :template]).empty?
-        options[:prefix] ||= _prefix
+      if (options.keys & [:partial, :file, :template, :once]).empty?
+        options[:prefixes] ||= _prefixes
       end
 
       options[:template] ||= (options[:action] || action_name).to_s
diff --git a/actionpack/lib/abstract_controller/url_for.rb b/actionpack/lib/abstract_controller/url_for.rb
new file mode 100644
index 0000000000..e5d5bef6b4
--- /dev/null
+++ b/actionpack/lib/abstract_controller/url_for.rb
@@ -0,0 +1,27 @@
+module AbstractController
+  module UrlFor
+    extend ActiveSupport::Concern
+    include ActionDispatch::Routing::UrlFor
+
+    def _routes
+      raise "In order to use #url_for, you must include routing helpers explicitly. " \
+            "For instance, `include Rails.application.routes.url_helpers"
+    end
+
+    module ClassMethods
+      def _routes
+        nil
+      end
+
+      def action_methods
+        @action_methods ||= begin
+          if _routes
+            super - _routes.named_routes.helper_names
+          else
+            super
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/abstract_controller/view_paths.rb b/actionpack/lib/abstract_controller/view_paths.rb
index b552a649d1..cea0f5ad1e 100644
--- a/actionpack/lib/abstract_controller/view_paths.rb
+++ b/actionpack/lib/abstract_controller/view_paths.rb
@@ -34,9 +34,9 @@ module AbstractController
       # Append a path to the list of view paths for this controller.
       #
       # ==== Parameters
-      # path<String, ViewPath>:: If a String is provided, it gets converted into
-      # the default view path. You may also provide a custom view path
-      # (see ActionView::ViewPathSet for more information)
+      # * <tt>path</tt> - If a String is provided, it gets converted into
+      #   the default view path. You may also provide a custom view path
+      #   (see ActionView::PathSet for more information)
       def append_view_path(path)
         self.view_paths = view_paths.dup + Array(path)
       end
@@ -44,9 +44,9 @@ module AbstractController
       # Prepend a path to the list of view paths for this controller.
       #
       # ==== Parameters
-      # path<String, ViewPath>:: If a String is provided, it gets converted into
-      # the default view path. You may also provide a custom view path
-      # (see ActionView::ViewPathSet for more information)
+      # * <tt>path</tt> - If a String is provided, it gets converted into
+      #   the default view path. You may also provide a custom view path
+      #   (see ActionView::PathSet for more information)
       def prepend_view_path(path)
         self.view_paths = Array(path) + view_paths.dup
       end
@@ -59,8 +59,8 @@ module AbstractController
       # Set the view paths.
       #
       # ==== Parameters
-      # paths<ViewPathSet, Object>:: If a ViewPathSet is provided, use that;
-      #   otherwise, process the parameter into a ViewPathSet.
+      # * <tt>paths</tt> - If a PathSet is provided, use that;
+      #   otherwise, process the parameter into a PathSet.
       def view_paths=(paths)
         self._view_paths = ActionView::Base.process_view_paths(paths)
         self._view_paths.freeze
diff --git a/actionpack/lib/action_controller.rb b/actionpack/lib/action_controller.rb
index ca0e5d6ff6..5b81cd39f4 100644
--- a/actionpack/lib/action_controller.rb
+++ b/actionpack/lib/action_controller.rb
@@ -34,7 +34,6 @@ module ActionController
     autoload :UrlFor
   end
 
-  autoload :Dispatcher,      'action_controller/deprecated/dispatcher'
   autoload :Integration,     'action_controller/deprecated/integration_test'
   autoload :IntegrationTest, 'action_controller/deprecated/integration_test'
   autoload :PerformanceTest, 'action_controller/deprecated/performance_test'
@@ -73,4 +72,5 @@ require 'active_support/core_ext/load_error'
 require 'active_support/core_ext/module/attr_internal'
 require 'active_support/core_ext/module/delegation'
 require 'active_support/core_ext/name_error'
+require 'active_support/core_ext/uri'
 require 'active_support/inflector'
diff --git a/actionpack/lib/action_controller/base.rb b/actionpack/lib/action_controller/base.rb
index 9dfffced75..81c0698fb8 100644
--- a/actionpack/lib/action_controller/base.rb
+++ b/actionpack/lib/action_controller/base.rb
@@ -1,6 +1,171 @@
 require "action_controller/log_subscriber"
 
 module ActionController
+  # Action Controllers are the core of a web request in \Rails. They are made up of one or more actions that are executed
+  # on request and then either render a template or redirect to another action. An action is defined as a public method
+  # on the controller, which will automatically be made accessible to the web-server through \Rails Routes.
+  #
+  # By default, only the ApplicationController in a \Rails application inherits from <tt>ActionController::Base</tt>. All other
+  # controllers in turn inherit from ApplicationController. This gives you one class to configure things such as
+  # request forgery protection and filtering of sensitive request parameters.
+  #
+  # A sample controller could look like this:
+  #
+  #   class PostsController < ApplicationController
+  #     def index
+  #       @posts = Post.all
+  #     end
+  #
+  #     def create
+  #       @post = Post.create params[:post]
+  #       redirect_to posts_path
+  #     end
+  #   end
+  #
+  # Actions, by default, render a template in the <tt>app/views</tt> directory corresponding to the name of the controller and action
+  # after executing code in the action. For example, the +index+ action of the PostsController would render the
+  # template <tt>app/views/posts/index.html.erb</tt> by default after populating the <tt>@posts</tt> instance variable.
+  #
+  # Unlike index, the create action will not render a template. After performing its main purpose (creating a
+  # new post), it initiates a redirect instead. This redirect works by returning an external
+  # "302 Moved" HTTP response that takes the user to the index action.
+  #
+  # These two methods represent the two basic action archetypes used in Action Controllers. Get-and-show and do-and-redirect.
+  # Most actions are variations of these themes.
+  #
+  # == Requests
+  #
+  # For every request, the router determines the value of the +controller+ and +action+ keys. These determine which controller
+  # and action are called. The remaining request parameters, the session (if one is available), and the full request with
+  # all the HTTP headers are made available to the action through accessor methods. Then the action is performed.
+  #
+  # The full request object is available via the request accessor and is primarily used to query for HTTP headers:
+  #
+  #   def server_ip
+  #     location = request.env["SERVER_ADDR"]
+  #     render :text => "This server hosted at #{location}"
+  #   end
+  #
+  # == Parameters
+  #
+  # All request parameters, whether they come from a GET or POST request, or from the URL, are available through the params method
+  # which returns a hash. For example, an action that was performed through <tt>/posts?category=All&limit=5</tt> will include
+  # <tt>{ "category" => "All", "limit" => 5 }</tt> in params.
+  #
+  # It's also possible to construct multi-dimensional parameter hashes by specifying keys using brackets, such as:
+  #
+  #   <input type="text" name="post[name]" value="david">
+  #   <input type="text" name="post[address]" value="hyacintvej">
+  #
+  # A request stemming from a form holding these inputs will include <tt>{ "post" => { "name" => "david", "address" => "hyacintvej" } }</tt>.
+  # If the address input had been named "post[address][street]", the params would have included
+  # <tt>{ "post" => { "address" => { "street" => "hyacintvej" } } }</tt>. There's no limit to the depth of the nesting.
+  #
+  # == Sessions
+  #
+  # Sessions allows you to store objects in between requests. This is useful for objects that are not yet ready to be persisted,
+  # such as a Signup object constructed in a multi-paged process, or objects that don't change much and are needed all the time, such
+  # as a User object for a system that requires login. The session should not be used, however, as a cache for objects where it's likely
+  # they could be changed unknowingly. It's usually too much work to keep it all synchronized -- something databases already excel at.
+  #
+  # You can place objects in the session by using the <tt>session</tt> method, which accesses a hash:
+  #
+  #   session[:person] = Person.authenticate(user_name, password)
+  #
+  # And retrieved again through the same hash:
+  #
+  #   Hello #{session[:person]}
+  #
+  # For removing objects from the session, you can either assign a single key to +nil+:
+  #
+  #   # removes :person from session
+  #   session[:person] = nil
+  #
+  # or you can remove the entire session with +reset_session+.
+  #
+  # Sessions are stored by default in a browser cookie that's cryptographically signed, but unencrypted.
+  # This prevents the user from tampering with the session but also allows him to see its contents.
+  #
+  # Do not put secret information in cookie-based sessions!
+  #
+  # Other options for session storage:
+  #
+  # * ActiveRecord::SessionStore - Sessions are stored in your database, which works better than PStore with multiple app servers and,
+  #   unlike CookieStore, hides your session contents from the user. To use ActiveRecord::SessionStore, set
+  #
+  #     MyApplication::Application.config.session_store :active_record_store
+  #
+  #   in your <tt>config/initializers/session_store.rb</tt> and run <tt>script/rails g session_migration</tt>.
+  #
+  # == Responses
+  #
+  # Each action results in a response, which holds the headers and document to be sent to the user's browser. The actual response
+  # object is generated automatically through the use of renders and redirects and requires no user intervention.
+  #
+  # == Renders
+  #
+  # Action Controller sends content to the user by using one of five rendering methods. The most versatile and common is the rendering
+  # of a template. Included in the Action Pack is the Action View, which enables rendering of ERb templates. It's automatically configured.
+  # The controller passes objects to the view by assigning instance variables:
+  #
+  #   def show
+  #     @post = Post.find(params[:id])
+  #   end
+  #
+  # Which are then automatically available to the view:
+  #
+  #   Title: <%= @post.title %>
+  #
+  # You don't have to rely on the automated rendering. Especially actions that could result in the rendering of different templates will use
+  # the manual rendering methods:
+  #
+  #   def search
+  #     @results = Search.find(params[:query])
+  #     case @results
+  #       when 0 then render :action => "no_results"
+  #       when 1 then render :action => "show"
+  #       when 2..10 then render :action => "show_many"
+  #     end
+  #   end
+  #
+  # Read more about writing ERb and Builder templates in ActionView::Base.
+  #
+  # == Redirects
+  #
+  # Redirects are used to move from one action to another. For example, after a <tt>create</tt> action, which stores a blog entry to a database,
+  # we might like to show the user the new entry. Because we're following good DRY principles (Don't Repeat Yourself), we're going to reuse (and redirect to)
+  # a <tt>show</tt> action that we'll assume has already been created. The code might look like this:
+  #
+  #   def create
+  #     @entry = Entry.new(params[:entry])
+  #     if @entry.save
+  #       # The entry was saved correctly, redirect to show
+  #       redirect_to :action => 'show', :id => @entry.id
+  #     else
+  #       # things didn't go so well, do something else
+  #     end
+  #   end
+  #
+  # In this case, after saving our new entry to the database, the user is redirected to the <tt>show</tt> method which is then executed.
+  #
+  # Learn more about <tt>redirect_to</tt> and what options you have in ActionController::Redirecting.
+  #
+  # == Calling multiple redirects or renders
+  #
+  # An action may contain only a single render or a single redirect. Attempting to try to do either again will result in a DoubleRenderError:
+  #
+  #   def do_something
+  #     redirect_to :action => "elsewhere"
+  #     render :action => "overthere" # raises DoubleRenderError
+  #   end
+  #
+  # If you need to redirect on the condition of something, then be sure to add "and return" to halt execution.
+  #
+  #   def do_something
+  #     redirect_to(:action => "elsewhere") and return if monkeys.nil?
+  #     render :action => "overthere" # won't be called if monkeys is nil
+  #   end
+  #
   class Base < Metal
     abstract!
 
@@ -58,13 +223,6 @@ module ActionController
     # Rails 2.x compatibility
     include ActionController::Compatibility
 
-    def self.inherited(klass)
-      super
-      klass.helper :all
-    end
-
     ActiveSupport.run_load_hooks(:action_controller, self)
   end
 end
-
-require "action_controller/deprecated/base"
diff --git a/actionpack/lib/action_controller/caching.rb b/actionpack/lib/action_controller/caching.rb
index 4105f9e14f..14137f2886 100644
--- a/actionpack/lib/action_controller/caching.rb
+++ b/actionpack/lib/action_controller/caching.rb
@@ -3,7 +3,7 @@ require 'uri'
 require 'set'
 
 module ActionController #:nodoc:
-  # Caching is a cheap way of speeding up slow applications by keeping the result of
+  # \Caching is a cheap way of speeding up slow applications by keeping the result of
   # calculations, renderings, and database calls around for subsequent requests.
   # Action Controller affords you three approaches in varying levels of granularity:
   # Page, Action, Fragment.
@@ -14,7 +14,7 @@ module ActionController #:nodoc:
   # Note: To turn off all caching and sweeping, set
   #   config.action_controller.perform_caching = false.
   #
-  # == Caching stores
+  # == \Caching stores
   #
   # All the caching stores from ActiveSupport::Cache are available to be used as backends
   # for Action Controller caching. This setting only affects action and fragment caching
diff --git a/actionpack/lib/action_controller/caching/actions.rb b/actionpack/lib/action_controller/caching/actions.rb
index 546f043c58..2c8a6e4d4d 100644
--- a/actionpack/lib/action_controller/caching/actions.rb
+++ b/actionpack/lib/action_controller/caching/actions.rb
@@ -4,53 +4,58 @@ module ActionController #:nodoc:
   module Caching
     # Action caching is similar to page caching by the fact that the entire
     # output of the response is cached, but unlike page caching, every
-    # request still goes through the Action Pack. The key benefit
-    # of this is that filters are run before the cache is served, which
-    # allows for authentication and other restrictions on whether someone
-    # is allowed to see the cache. Example:
+    # request still goes through Action Pack. The key benefit of this is
+    # that filters run before the cache is served, which allows for
+    # authentication and other restrictions on whether someone is allowed
+    # to execute such action. Example:
     #
     #   class ListsController < ApplicationController
     #     before_filter :authenticate, :except => :public
+    #
     #     caches_page   :public
-    #     caches_action :index, :show, :feed
+    #     caches_action :index, :show
     #   end
     #
-    # In this example, the public action doesn't require authentication,
-    # so it's possible to use the faster page caching method. But both
-    # the show and feed action are to be shielded behind the authenticate
-    # filter, so we need to implement those as action caches.
-    #
-    # Action caching internally uses the fragment caching and an around
-    # filter to do the job. The fragment cache is named according to both
-    # the current host and the path. So a page that is accessed at
-    # http://david.somewhere.com/lists/show/1 will result in a fragment named
-    # "david.somewhere.com/lists/show/1". This allows the cacher to
-    # differentiate between "david.somewhere.com/lists/" and
-    # "jamis.somewhere.com/lists/" -- which is a helpful way of assisting
+    # In this example, the +public+ action doesn't require authentication
+    # so it's possible to use the faster page caching. On the other hand
+    # +index+ and +show+ require authentication. They can still be cached,
+    # but we need action caching for them.
+    #
+    # Action caching uses fragment caching internally and an around
+    # filter to do the job. The fragment cache is named according to
+    # the host and path of the request. A page that is accessed at
+    # <tt>http://david.example.com/lists/show/1</tt> will result in a fragment named
+    # <tt>david.example.com/lists/show/1</tt>. This allows the cacher to
+    # differentiate between <tt>david.example.com/lists/</tt> and
+    # <tt>jamis.example.com/lists/</tt> -- which is a helpful way of assisting
     # the subdomain-as-account-key pattern.
     #
     # Different representations of the same resource, e.g.
-    # <tt>http://david.somewhere.com/lists</tt> and
-    # <tt>http://david.somewhere.com/lists.xml</tt>
+    # <tt>http://david.example.com/lists</tt> and
+    # <tt>http://david.example.com/lists.xml</tt>
     # are treated like separate requests and so are cached separately.
     # Keep in mind when expiring an action cache that
     # <tt>:action => 'lists'</tt> is not the same as
     # <tt>:action => 'list', :format => :xml</tt>.
     #
     # You can set modify the default action cache path by passing a
-    # :cache_path option.  This will be passed directly to
-    # ActionCachePath.path_for.  This is handy for actions with multiple
-    # possible routes that should be cached differently.  If a block is
-    # given, it is called with the current controller instance.
+    # <tt>:cache_path</tt> option.  This will be passed directly to
+    # <tt>ActionCachePath.path_for</tt>.  This is handy for actions with
+    # multiple possible routes that should be cached differently. If a
+    # block is given, it is called with the current controller instance.
+    #
+    # And you can also use <tt>:if</tt> (or <tt>:unless</tt>) to pass a
+    # proc that specifies when the action should be cached.
     #
-    # And you can also use :if (or :unless) to pass a Proc that
-    # specifies when the action should be cached.
+    # Finally, if you are using memcached, you can also pass <tt>:expires_in</tt>.
     #
-    # Finally, if you are using memcached, you can also pass :expires_in.
+    # The following example depicts some of the points made above:
     #
     #   class ListsController < ApplicationController
     #     before_filter :authenticate, :except => :public
-    #     caches_page   :public
+    #
+    #     caches_page :public
+    #
     #     caches_action :index, :if => proc do |c|
     #       !c.request.format.json?  # cache if is not a JSON request
     #     end
@@ -58,19 +63,28 @@ module ActionController #:nodoc:
     #     caches_action :show, :cache_path => { :project => 1 },
     #       :expires_in => 1.hour
     #
-    #     caches_action :feed, :cache_path => proc do |controller|
-    #       if controller.params[:user_id]
-    #         controller.send(:user_list_url,
-    #           controller.params[:user_id], controller.params[:id])
+    #     caches_action :feed, :cache_path => proc do |c|
+    #       if c.params[:user_id]
+    #         c.send(:user_list_url,
+    #           c.params[:user_id], c.params[:id])
     #       else
-    #         controller.send(:list_url, controller.params[:id])
+    #         c.send(:list_url, c.params[:id])
     #       end
     #     end
     #   end
     #
-    # If you pass :layout => false, it will only cache your action
-    # content. It is useful when your layout has dynamic information.
+    # If you pass <tt>:layout => false</tt>, it will only cache your action
+    # content. That's useful when your layout has dynamic information.
+    #
+    # Warning: If the format of the request is determined by the Accept HTTP
+    # header the Content-Type of the cached response could be wrong because
+    # no information about the MIME type is stored in the cache key. So, if
+    # you first ask for MIME type M in the Accept header, a cache entry is
+    # created, and then perform a second request to the same resource asking
+    # for a different MIME type, you'd get the content cached for M.
     #
+    # The <tt>:format</tt> parameter is taken into account though. The safest
+    # way to cache by MIME type is to pass the format in the route.
     module Actions
       extend ActiveSupport::Concern
 
@@ -89,12 +103,14 @@ module ActionController #:nodoc:
       end
 
       def _save_fragment(name, options)
-        return unless caching_allowed?
-
         content = response_body
         content = content.join if content.is_a?(Array)
 
-        write_fragment(name, content, options)
+        if caching_allowed?
+          write_fragment(name, content, options)
+        else
+          content
+        end
       end
 
     protected
@@ -144,7 +160,7 @@ module ActionController #:nodoc:
         attr_reader :path, :extension
 
         # If +infer_extension+ is true, the cache path extension is looked up from the request's
-        # path & format. This is desirable when reading and writing the cache, but not when
+        # path and format. This is desirable when reading and writing the cache, but not when
         # expiring the cache - expire_action should expire the same files regardless of the
         # request format.
         def initialize(controller, options = {}, infer_extension = true)
@@ -161,7 +177,7 @@ module ActionController #:nodoc:
         def normalize!(path)
           path << 'index' if path[-1] == ?/
           path << ".#{extension}" if extension and !path.ends_with?(extension)
-          URI.unescape(path)
+          URI.parser.unescape(path)
         end
       end
     end
diff --git a/actionpack/lib/action_controller/caching/fragments.rb b/actionpack/lib/action_controller/caching/fragments.rb
index 460273dac1..0be04b70a1 100644
--- a/actionpack/lib/action_controller/caching/fragments.rb
+++ b/actionpack/lib/action_controller/caching/fragments.rb
@@ -1,52 +1,72 @@
 module ActionController #:nodoc:
   module Caching
-    # Fragment caching is used for caching various blocks within templates without caching the entire action as a whole. This is useful when
-    # certain elements of an action change frequently or depend on complicated state while other parts rarely change or can be shared amongst multiple
-    # parties. The caching is done using the cache helper available in the Action View. A template with caching might look something like:
+    # Fragment caching is used for caching various blocks within 
+    # views without caching the entire action as a whole. This is
+    # useful when certain elements of an action change frequently or 
+    # depend on complicated state while other parts rarely change or 
+    # can be shared amongst multiple parties. The caching is done using
+    # the <tt>cache</tt> helper available in the Action View. A 
+    # template with fragment caching might look like:
     #
     #   <b>Hello <%= @name %></b>
+    #
     #   <% cache do %>
     #     All the topics in the system:
     #     <%= render :partial => "topic", :collection => Topic.find(:all) %>
     #   <% end %>
     #
-    # This cache will bind to the name of the action that called it, so if this code was part of the view for the topics/list action, you would
-    # be able to invalidate it using <tt>expire_fragment(:controller => "topics", :action => "list")</tt>.
+    # This cache will bind the name of the action that called it, so if
+    # this code was part of the view for the topics/list action, you 
+    # would be able to invalidate it using:
+    #   
+    #   expire_fragment(:controller => "topics", :action => "list")
     #
-    # This default behavior is of limited use if you need to cache multiple fragments per action or if the action itself is cached using
-    # <tt>caches_action</tt>, so we also have the option to qualify the name of the cached fragment with something like:
+    # This default behavior is limited if you need to cache multiple 
+    # fragments per action or if the action itself is cached using 
+    # <tt>caches_action</tt>. To remedy this, there is an option to 
+    # qualify the name of the cached fragment by using the 
+    # <tt>:action_suffix</tt> option:
     #
     #   <% cache(:action => "list", :action_suffix => "all_topics") do %>
     #
-    # That would result in a name such as "/topics/list/all_topics", avoiding conflicts with the action cache and with any fragments that use a
-    # different suffix. Note that the URL doesn't have to really exist or be callable - the url_for system is just used to generate unique
-    # cache names that we can refer to when we need to expire the cache.
+    # That would result in a name such as 
+    # <tt>/topics/list/all_topics</tt>, avoiding conflicts with the 
+    # action cache and with any fragments that use a different suffix.
+    # Note that the URL doesn't have to really exist or be callable
+    # - the url_for system is just used to generate unique cache names
+    # that we can refer to when we need to expire the cache.
     #
     # The expiration call for this example is:
     #
-    #   expire_fragment(:controller => "topics", :action => "list", :action_suffix => "all_topics")
+    #   expire_fragment(:controller => "topics", 
+    #                   :action => "list", 
+    #                   :action_suffix => "all_topics")
     module Fragments
-      # Given a key (as described in <tt>expire_fragment</tt>), returns a key suitable for use in reading,
-      # writing, or expiring a cached fragment. If the key is a hash, the generated key is the return
-      # value of url_for on that hash (without the protocol). All keys are prefixed with "views/" and uses
+      # Given a key (as described in <tt>expire_fragment</tt>), returns
+      # a key suitable for use in reading, writing, or expiring a 
+      # cached fragment. If the key is a hash, the generated key is the
+      # return value of url_for on that hash (without the protocol). 
+      # All keys are prefixed with <tt>views/</tt> and uses
       # ActiveSupport::Cache.expand_cache_key for the expansion.
       def fragment_cache_key(key)
         ActiveSupport::Cache.expand_cache_key(key.is_a?(Hash) ? url_for(key).split("://").last : key, :views)
       end
 
-      # Writes <tt>content</tt> to the location signified by <tt>key</tt> (see <tt>expire_fragment</tt> for acceptable formats)
+      # Writes <tt>content</tt> to the location signified by 
+      # <tt>key</tt> (see <tt>expire_fragment</tt> for acceptable formats).
       def write_fragment(key, content, options = nil)
         return content unless cache_configured?
 
         key = fragment_cache_key(key)
         instrument_fragment_cache :write_fragment, key do
-          content = content.html_safe.to_str if content.respond_to?(:html_safe)
+          content = content.to_str
           cache_store.write(key, content, options)
         end
         content
       end
 
-      # Reads a cached fragment from the location signified by <tt>key</tt> (see <tt>expire_fragment</tt> for acceptable formats)
+      # Reads a cached fragment from the location signified by <tt>key</tt>
+      # (see <tt>expire_fragment</tt> for acceptable formats).
       def read_fragment(key, options = nil)
         return unless cache_configured?
 
@@ -57,7 +77,8 @@ module ActionController #:nodoc:
         end
       end
 
-      # Check if a cached fragment from the location signified by <tt>key</tt> exists (see <tt>expire_fragment</tt> for acceptable formats)
+      # Check if a cached fragment from the location signified by 
+      # <tt>key</tt> exists (see <tt>expire_fragment</tt> for acceptable formats)
       def fragment_exist?(key, options = nil)
         return unless cache_configured?
         key = fragment_cache_key(key)
@@ -70,8 +91,9 @@ module ActionController #:nodoc:
       # Removes fragments from the cache.
       #
       # +key+ can take one of three forms:
+      #
       # * String - This would normally take the form of a path, like
-      #   <tt>"pages/45/notes"</tt>.
+      #   <tt>pages/45/notes</tt>.
       # * Hash - Treated as an implicit call to +url_for+, like
       #   <tt>{:controller => "pages", :action => "notes", :id => 45}</tt>
       # * Regexp - Will remove any fragment that matches, so
diff --git a/actionpack/lib/action_controller/caching/pages.rb b/actionpack/lib/action_controller/caching/pages.rb
index 4f7a5d3f55..8c583c7ce0 100644
--- a/actionpack/lib/action_controller/caching/pages.rb
+++ b/actionpack/lib/action_controller/caching/pages.rb
@@ -1,5 +1,4 @@
 require 'fileutils'
-require 'uri'
 require 'active_support/core_ext/class/attribute_accessors'
 
 module ActionController #:nodoc:
@@ -71,9 +70,9 @@ module ActionController #:nodoc:
 
         # Manually cache the +content+ in the key determined by +path+. Example:
         #   cache_page "I'm the cached content", "/lists/show"
-        def cache_page(content, path)
+        def cache_page(content, path, extension = nil)
           return unless perform_caching
-          path = page_cache_path(path)
+          path = page_cache_path(path, extension)
 
           instrument_page_cache :write_page, path do
             FileUtils.makedirs(File.dirname(path))
@@ -98,14 +97,16 @@ module ActionController #:nodoc:
         end
 
         private
-          def page_cache_file(path)
-            name = (path.empty? || path == "/") ? "/index" : URI.unescape(path.chomp('/'))
-            name << page_cache_extension unless (name.split('/').last || name).include? '.'
+          def page_cache_file(path, extension)
+            name = (path.empty? || path == "/") ? "/index" : URI.parser.unescape(path.chomp('/'))
+            unless (name.split('/').last || name).include? '.'
+              name << (extension || self.page_cache_extension)
+            end
             return name
           end
 
-          def page_cache_path(path)
-            page_cache_directory + page_cache_file(path)
+          def page_cache_path(path, extension = nil)
+            page_cache_directory.to_s + page_cache_file(path, extension)
           end
 
           def instrument_page_cache(name, path)
@@ -135,7 +136,7 @@ module ActionController #:nodoc:
       # If no options are provided, the requested url is used. Example:
       #   cache_page "I'm the cached content", :controller => "lists", :action => "show"
       def cache_page(content = nil, options = nil)
-        return unless self.class.perform_caching && caching_allowed
+        return unless self.class.perform_caching && caching_allowed?
 
         path = case options
           when Hash
@@ -146,13 +147,13 @@ module ActionController #:nodoc:
             request.path
         end
 
-        self.class.cache_page(content || response.body, path)
+        if (type = Mime::LOOKUP[self.content_type]) && (type_symbol = type.symbol).present?
+          extension = ".#{type_symbol}"
+        end
+
+        self.class.cache_page(content || response.body, path, extension)
       end
 
-      private
-        def caching_allowed
-          request.get? && response.status.to_i == 200
-        end
     end
   end
 end
diff --git a/actionpack/lib/action_controller/deprecated.rb b/actionpack/lib/action_controller/deprecated.rb
index 9f2de57033..aa0cfc9395 100644
--- a/actionpack/lib/action_controller/deprecated.rb
+++ b/actionpack/lib/action_controller/deprecated.rb
@@ -1,3 +1,3 @@
 ActionController::AbstractRequest = ActionController::Request = ActionDispatch::Request
 ActionController::AbstractResponse = ActionController::Response = ActionDispatch::Response
-ActionController::Routing = ActionDispatch::Routing
+ActionController::Routing = ActionDispatch::Routing
\ No newline at end of file
diff --git a/actionpack/lib/action_controller/deprecated/base.rb b/actionpack/lib/action_controller/deprecated/base.rb
deleted file mode 100644
index 3975afcaf0..0000000000
--- a/actionpack/lib/action_controller/deprecated/base.rb
+++ /dev/null
@@ -1,133 +0,0 @@
-module ActionController
-  class Base
-    # Deprecated methods. Wrap them in a module so they can be overwritten by plugins
-    # (like the verify method.)
-    module DeprecatedBehavior #:nodoc:
-      def relative_url_root
-        ActiveSupport::Deprecation.warn "ActionController::Base.relative_url_root is ineffective. " <<
-          "Please stop using it.", caller
-      end
-
-      def relative_url_root=
-        ActiveSupport::Deprecation.warn "ActionController::Base.relative_url_root= is ineffective. " <<
-          "Please stop using it.", caller
-      end
-
-      def consider_all_requests_local
-        ActiveSupport::Deprecation.warn "ActionController::Base.consider_all_requests_local is deprecated, " <<
-          "use Rails.application.config.consider_all_requests_local instead", caller
-        Rails.application.config.consider_all_requests_local
-      end
-
-      def consider_all_requests_local=(value)
-        ActiveSupport::Deprecation.warn "ActionController::Base.consider_all_requests_local= is deprecated. " <<
-          "Please configure it on your application with config.consider_all_requests_local=", caller
-        Rails.application.config.consider_all_requests_local = value
-      end
-
-      def allow_concurrency
-        ActiveSupport::Deprecation.warn "ActionController::Base.allow_concurrency is deprecated, " <<
-          "use Rails.application.config.allow_concurrency instead", caller
-        Rails.application.config.allow_concurrency
-      end
-
-      def allow_concurrency=(value)
-        ActiveSupport::Deprecation.warn "ActionController::Base.allow_concurrency= is deprecated. " <<
-          "Please configure it on your application with config.allow_concurrency=", caller
-        Rails.application.config.allow_concurrency = value
-      end
-
-      def ip_spoofing_check=(value)
-        ActiveSupport::Deprecation.warn "ActionController::Base.ip_spoofing_check= is deprecated. " <<
-          "Please configure it on your application with config.action_dispatch.ip_spoofing_check=", caller
-        Rails.application.config.action_dispatch.ip_spoofing_check = value
-      end
-
-      def ip_spoofing_check
-        ActiveSupport::Deprecation.warn "ActionController::Base.ip_spoofing_check is deprecated. " <<
-          "Configuring ip_spoofing_check on the application configures a middleware.", caller
-        Rails.application.config.action_dispatch.ip_spoofing_check
-      end
-
-      def cookie_verifier_secret=(value)
-        ActiveSupport::Deprecation.warn "ActionController::Base.cookie_verifier_secret= is deprecated. " <<
-          "Please configure it on your application with config.secret_token=", caller
-      end
-
-      def cookie_verifier_secret
-        ActiveSupport::Deprecation.warn "ActionController::Base.cookie_verifier_secret is deprecated.", caller
-      end
-
-      def trusted_proxies=(value)
-        ActiveSupport::Deprecation.warn "ActionController::Base.trusted_proxies= is deprecated. " <<
-          "Please configure it on your application with config.action_dispatch.trusted_proxies=", caller
-        Rails.application.config.action_dispatch.ip_spoofing_check = value
-      end
-
-      def trusted_proxies
-        ActiveSupport::Deprecation.warn "ActionController::Base.trusted_proxies is deprecated. " <<
-          "Configuring trusted_proxies on the application configures a middleware.", caller
-        Rails.application.config.action_dispatch.ip_spoofing_check = value
-      end
-
-      def session(*args)
-        ActiveSupport::Deprecation.warn(
-          "Disabling sessions for a single controller has been deprecated. " +
-          "Sessions are now lazy loaded. So if you don't access them, " +
-          "consider them off. You can still modify the session cookie " +
-          "options with request.session_options.", caller)
-      end
-
-      def session=(value)
-        ActiveSupport::Deprecation.warn "ActionController::Base.session= is deprecated. " <<
-          "Please configure it on your application with config.session_store :cookie_store, :key => '....'", caller
-        if value.delete(:disabled)
-          Rails.application.config.session_store :disabled
-        else
-          store = Rails.application.config.session_store
-          Rails.application.config.session_store store, value
-        end
-      end
-
-      # Controls the resource action separator
-      def resource_action_separator
-        @resource_action_separator ||= "/"
-      end
-
-      def resource_action_separator=(val)
-        ActiveSupport::Deprecation.warn "ActionController::Base.resource_action_separator is deprecated and only " \
-                                        "works with the deprecated router DSL."
-        @resource_action_separator = val
-      end
-
-      def use_accept_header
-        ActiveSupport::Deprecation.warn "ActionController::Base.use_accept_header doesn't do anything anymore. " \
-                                        "The accept header is always taken into account."
-      end
-
-      def use_accept_header=(val)
-        use_accept_header
-      end
-
-      # This method has been moved to ActionDispatch::Request.filter_parameters
-      def filter_parameter_logging(*args, &block)
-        ActiveSupport::Deprecation.warn("Setting filter_parameter_logging in ActionController is deprecated and has no longer effect, please set 'config.filter_parameters' in config/application.rb instead", caller)
-        filter = Rails.application.config.filter_parameters
-        filter.concat(args)
-        filter << block if block
-        filter
-      end
-
-      # This was moved to a plugin
-      def verify(*args)
-        ActiveSupport::Deprecation.warn "verify was removed from Rails and is now available as a plugin. " <<
-          "Please install it with `rails plugin install git://github.com/rails/verification.git`.", caller
-      end
-    end
-
-    extend DeprecatedBehavior
-
-    delegate :consider_all_requests_local, :consider_all_requests_local=,
-             :allow_concurrency, :allow_concurrency=, :to => :"self.class"
-  end
-end
diff --git a/actionpack/lib/action_controller/deprecated/dispatcher.rb b/actionpack/lib/action_controller/deprecated/dispatcher.rb
deleted file mode 100644
index 8c21e375dd..0000000000
--- a/actionpack/lib/action_controller/deprecated/dispatcher.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-module ActionController
-  class Dispatcher
-    class << self
-      def before_dispatch(*args, &block)
-        ActiveSupport::Deprecation.warn "ActionController::Dispatcher.before_dispatch is deprecated. " <<
-          "Please use ActionDispatch::Callbacks.before instead.", caller
-        ActionDispatch::Callbacks.before(*args, &block)
-      end
-
-      def after_dispatch(*args, &block)
-        ActiveSupport::Deprecation.warn "ActionController::Dispatcher.after_dispatch is deprecated. " <<
-          "Please use ActionDispatch::Callbacks.after instead.", caller
-        ActionDispatch::Callbacks.after(*args, &block)
-      end
-
-      def to_prepare(*args, &block)
-        ActiveSupport::Deprecation.warn "ActionController::Dispatcher.to_prepare is deprecated. " <<
-          "Please use config.to_prepare instead", caller
-        ActionDispatch::Callbacks.after(*args, &block)
-      end
-
-      def new
-        ActiveSupport::Deprecation.warn "ActionController::Dispatcher.new is deprecated, use Rails.application instead."
-        Rails.application
-      end
-    end
-  end
-end
diff --git a/actionpack/lib/action_controller/log_subscriber.rb b/actionpack/lib/action_controller/log_subscriber.rb
index ece270b3ce..3fae697cc3 100644
--- a/actionpack/lib/action_controller/log_subscriber.rb
+++ b/actionpack/lib/action_controller/log_subscriber.rb
@@ -16,7 +16,11 @@ module ActionController
       payload   = event.payload
       additions = ActionController::Base.log_process_action(payload)
 
-      message = "Completed #{payload[:status]} #{Rack::Utils::HTTP_STATUS_CODES[payload[:status]]} in %.0fms" % event.duration
+      status = payload[:status]
+      if status.nil? && payload[:exception].present?
+        status = Rack::Utils.status_code(ActionDispatch::ShowExceptions.rescue_responses[payload[:exception].first]) rescue nil 
+      end 
+      message = "Completed #{status} #{Rack::Utils::HTTP_STATUS_CODES[status]} in %.0fms" % event.duration
       message << " (#{additions.join(" | ")})" unless additions.blank?
 
       info(message)
@@ -42,7 +46,7 @@ module ActionController
         def #{method}(event)
           key_or_path = event.payload[:key] || event.payload[:path]
           human_name  = #{method.to_s.humanize.inspect}
-          info("\#{human_name} \#{key_or_path} (%.1fms)" % event.duration)
+          info("\#{human_name} \#{key_or_path} \#{"(%.1fms)" % event.duration}")
         end
       METHOD
     end
diff --git a/actionpack/lib/action_controller/metal.rb b/actionpack/lib/action_controller/metal.rb
index 2281c500c5..e5db31061b 100644
--- a/actionpack/lib/action_controller/metal.rb
+++ b/actionpack/lib/action_controller/metal.rb
@@ -12,7 +12,7 @@ module ActionController
   #
   class MiddlewareStack < ActionDispatch::MiddlewareStack #:nodoc:
     class Middleware < ActionDispatch::MiddlewareStack::Middleware #:nodoc:
-      def initialize(klass, *args)
+      def initialize(klass, *args, &block)
         options = args.extract_options!
         @only   = Array(options.delete(:only)).map(&:to_s)
         @except = Array(options.delete(:except)).map(&:to_s)
@@ -36,35 +36,88 @@ module ActionController
       action = action.to_s
       raise "MiddlewareStack#build requires an app" unless app
 
-      reverse.inject(app) do |a, middleware|
+      middlewares.reverse.inject(app) do |a, middleware|
         middleware.valid?(action) ?
           middleware.build(a) : a
       end
     end
   end
 
-  # ActionController::Metal provides a way to get a valid Rack application from a controller.
+  # <tt>ActionController::Metal</tt> is the simplest possible controller, providing a
+  # valid Rack interface without the additional niceties provided by
+  # <tt>ActionController::Base</tt>.
+  #
+  # A sample metal controller might look like this:
+  #
+  #   class HelloController < ActionController::Metal
+  #     def index
+  #       self.response_body = "Hello World!"
+  #     end
+  #   end
+  #
+  # And then to route requests to your metal controller, you would add
+  # something like this to <tt>config/routes.rb</tt>:
+  #
+  #   match 'hello', :to => HelloController.action(:index)
+  #
+  # The +action+ method returns a valid Rack application for the \Rails
+  # router to dispatch to.
+  #
+  # == Rendering Helpers
+  #
+  # <tt>ActionController::Metal</tt> by default provides no utilities for rendering
+  # views, partials, or other responses aside from explicitly calling of
+  # <tt>response_body=</tt>, <tt>content_type=</tt>, and <tt>status=</tt>. To
+  # add the render helpers you're used to having in a normal controller, you
+  # can do the following:
+  #
+  #   class HelloController < ActionController::Metal
+  #     include ActionController::Rendering
+  #     append_view_path "#{Rails.root}/app/views"
+  #
+  #     def index
+  #       render "hello/index"
+  #     end
+  #   end
+  #
+  # == Redirection Helpers
+  #
+  # To add redirection helpers to your metal controller, do the following:
+  #
+  #   class HelloController < ActionController::Metal
+  #     include ActionController::Redirecting
+  #     include Rails.application.routes.url_helpers
+  #
+  #     def index
+  #       redirect_to root_url
+  #     end
+  #   end
+  #
+  # == Other Helpers
+  #
+  # You can refer to the modules included in <tt>ActionController::Base</tt> to see
+  # other features you can bring into your metal controller.
   #
-  # In AbstractController, dispatching is triggered directly by calling #process on a new controller.
-  # ActionController::Metal provides an #action method that returns a valid Rack application for a
-  # given action. Other rack builders, such as Rack::Builder, Rack::URLMap, and the Rails router,
-  # can dispatch directly to the action returned by FooController.action(:index).
   class Metal < AbstractController::Base
     abstract!
 
-    attr_internal :env
+    attr_internal_writer :env
+
+    def env
+      @_env ||= {}
+    end
 
     # Returns the last part of the controller's name, underscored, without the ending
-    # "Controller". For instance, MyApp::MyPostsController would return "my_posts" for
-    # controller_name
+    # <tt>Controller</tt>. For instance, PostsController returns <tt>posts</tt>.
+    # Namespaces are left out, so Admin::PostsController returns <tt>posts</tt> as well.
     #
     # ==== Returns
-    # String
+    # * <tt>string</tt>
     def self.controller_name
       @controller_name ||= self.name.demodulize.sub(/Controller$/, '').underscore
     end
 
-    # Delegates to the class' #controller_name
+    # Delegates to the class' <tt>controller_name</tt>
     def controller_name
       self.class.controller_name
     end
@@ -81,6 +134,9 @@ module ActionController
     def initialize(*)
       @_headers = {"Content-Type" => "text/html"}
       @_status = 200
+      @_request = nil
+      @_response = nil
+      @_routes = nil
       super
     end
 
@@ -112,6 +168,11 @@ module ActionController
       headers["Location"] = url
     end
 
+    # basic url_for that can be overridden for more robust functionality
+    def url_for(string)
+      string
+    end
+
     def status
       @_status
     end
@@ -121,12 +182,11 @@ module ActionController
     end
 
     def response_body=(val)
-      body = val.respond_to?(:each) ? val : [val]
+      body = val.nil? ? nil : (val.respond_to?(:each) ? val : [val])
       super body
     end
 
-    # :api: private
-    def dispatch(name, request)
+    def dispatch(name, request) #:nodoc:
       @_request = request
       @_env = request.env
       @_env['action_controller.instance'] = self
@@ -134,8 +194,7 @@ module ActionController
       to_a
     end
 
-    # :api: private
-    def to_a
+    def to_a #:nodoc:
       response ? response.to_a : [status, headers, response_body]
     end
 
@@ -147,8 +206,8 @@ module ActionController
       super
     end
 
-    def self.use(*args)
-      middleware_stack.use(*args)
+    def self.use(*args, &block)
+      middleware_stack.use(*args, &block)
     end
 
     def self.middleware
@@ -164,10 +223,10 @@ module ActionController
     # for the same action.
     #
     # ==== Parameters
-    # action<#to_s>:: An action name
+    # * <tt>action</tt> - An action name
     #
     # ==== Returns
-    # Proc:: A rack application
+    # * <tt>proc</tt> - A rack application
     def self.action(name, klass = ActionDispatch::Request)
       middleware_stack.build(name.to_s) do |env|
         new.dispatch(name, klass.new(env))
diff --git a/actionpack/lib/action_controller/metal/compatibility.rb b/actionpack/lib/action_controller/metal/compatibility.rb
index d49465fa0b..006b9fd456 100644
--- a/actionpack/lib/action_controller/metal/compatibility.rb
+++ b/actionpack/lib/action_controller/metal/compatibility.rb
@@ -5,9 +5,6 @@ module ActionController
     class ::ActionController::ActionControllerError < StandardError #:nodoc:
     end
 
-    module ClassMethods
-    end
-
     # Temporary hax
     included do
       ::ActionController::UnknownAction = ::AbstractController::ActionNotFound
@@ -39,12 +36,6 @@ module ActionController
     def assign_shortcuts(*) end
 
     def _normalize_options(options)
-      if options[:action] && options[:action].to_s.include?(?/)
-        ActiveSupport::Deprecation.warn "Giving a path to render :action is deprecated. " <<
-          "Please use render :template instead", caller
-        options[:template] = options.delete(:action)
-      end
-
       options[:text] = nil if options.delete(:nothing) == true
       options[:text] = " " if options.key?(:text) && options[:text].nil?
       super
diff --git a/actionpack/lib/action_controller/metal/conditional_get.rb b/actionpack/lib/action_controller/metal/conditional_get.rb
index 61e7ece90d..a5e37172c9 100644
--- a/actionpack/lib/action_controller/metal/conditional_get.rb
+++ b/actionpack/lib/action_controller/metal/conditional_get.rb
@@ -6,7 +6,7 @@ module ActionController
     include Head
 
     # Sets the etag, last_modified, or both on the response and renders a
-    # "304 Not Modified" response if the request is already fresh.
+    # <tt>304 Not Modified</tt> response if the request is already fresh.
     #
     # Parameters:
     # * <tt>:etag</tt>
@@ -17,11 +17,11 @@ module ActionController
     #
     #   def show
     #     @article = Article.find(params[:id])
-    #     fresh_when(:etag => @article, :last_modified => @article.created_at.utc, :public => true)
+    #     fresh_when(:etag => @article, :last_modified => @article.created_at, :public => true)
     #   end
     #
     # This will render the show template if the request isn't sending a matching etag or
-    # If-Modified-Since header and just a "304 Not Modified" response if there's a match.
+    # If-Modified-Since header and just a <tt>304 Not Modified</tt> response if there's a match.
     #
     def fresh_when(options)
       options.assert_valid_keys(:etag, :last_modified, :public)
@@ -36,7 +36,7 @@ module ActionController
     # Sets the etag and/or last_modified on the response and checks it against
     # the client request. If the request doesn't match the options provided, the
     # request is considered stale and should be generated from scratch. Otherwise,
-    # it's fresh and we don't need to generate anything and a reply of "304 Not Modified" is sent.
+    # it's fresh and we don't need to generate anything and a reply of <tt>304 Not Modified</tt> is sent.
     #
     # Parameters:
     # * <tt>:etag</tt>
@@ -48,7 +48,7 @@ module ActionController
     #   def show
     #     @article = Article.find(params[:id])
     #
-    #     if stale?(:etag => @article, :last_modified => @article.created_at.utc)
+    #     if stale?(:etag => @article, :last_modified => @article.created_at)
     #       @statistics = @article.really_expensive_call
     #       respond_to do |format|
     #         # all the supported formats
@@ -60,13 +60,13 @@ module ActionController
       !request.fresh?(response)
     end
 
-    # Sets a HTTP 1.1 Cache-Control header. Defaults to issuing a "private" instruction, so that
-    # intermediate caches shouldn't cache the response.
+    # Sets a HTTP 1.1 Cache-Control header. Defaults to issuing a <tt>private</tt> instruction, so that
+    # intermediate caches must not cache the response.
     #
     # Examples:
     #   expires_in 20.minutes
     #   expires_in 3.hours, :public => true
-    #   expires in 3.hours, 'max-stale' => 5.hours, :public => true
+    #   expires_in 3.hours, 'max-stale' => 5.hours, :public => true
     #
     # This method will overwrite an existing Cache-Control header.
     # See http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html for more possibilities.
@@ -77,7 +77,7 @@ module ActionController
       response.cache_control[:extras] = options.map {|k,v| "#{k}=#{v}"}
     end
 
-    # Sets a HTTP 1.1 Cache-Control header of "no-cache" so no caching should occur by the browser or
+    # Sets a HTTP 1.1 Cache-Control header of <tt>no-cache</tt> so no caching should occur by the browser or
     # intermediate caches (like caching proxy servers).
     def expires_now #:doc:
       response.cache_control.replace(:no_cache => true)
diff --git a/actionpack/lib/action_controller/metal/head.rb b/actionpack/lib/action_controller/metal/head.rb
index a5c9910d68..8abcad55a2 100644
--- a/actionpack/lib/action_controller/metal/head.rb
+++ b/actionpack/lib/action_controller/metal/head.rb
@@ -2,8 +2,6 @@ module ActionController
   module Head
     extend ActiveSupport::Concern
 
-    include ActionController::UrlFor
-
     # Return a response that has no content (merely headers). The options
     # argument is interpreted to be a hash of header names and values.
     # This allows you to easily return a response that consists only of
@@ -22,13 +20,13 @@ module ActionController
       location = options.delete(:location)
 
       options.each do |key, value|
-        headers[key.to_s.dasherize.split(/-/).map { |v| v.capitalize }.join("-")] = value.to_s
+        headers[key.to_s.dasherize.split('-').each { |v| v[0] = v[0].chr.upcase }.join('-')] = value.to_s
       end
 
       self.status = status
       self.location = url_for(location) if location
-      self.content_type = Mime[formats.first]
+      self.content_type = Mime[formats.first] if formats
       self.response_body = " "
     end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/metal/helpers.rb b/actionpack/lib/action_controller/metal/helpers.rb
index e0bc47318a..91a88ab68a 100644
--- a/actionpack/lib/action_controller/metal/helpers.rb
+++ b/actionpack/lib/action_controller/metal/helpers.rb
@@ -2,21 +2,21 @@ require 'active_support/core_ext/array/wrap'
 require 'active_support/core_ext/class/attribute'
 
 module ActionController
-  # The Rails framework provides a large number of helpers for working with +assets+, +dates+, +forms+,
-  # +numbers+ and model objects, to name a few. These helpers are available to all templates
+  # The \Rails framework provides a large number of helpers for working with assets, dates, forms,
+  # numbers and model objects, to name a few. These helpers are available to all templates
   # by default.
   #
-  # In addition to using the standard template helpers provided in the Rails framework, creating custom helpers to
+  # In addition to using the standard template helpers provided, creating custom helpers to
   # extract complicated logic or reusable functionality is strongly encouraged. By default, the controller will
   # include a helper whose name matches that of the controller, e.g., <tt>MyController</tt> will automatically
   # include <tt>MyHelper</tt>.
   #
-  # Additional helpers can be specified using the +helper+ class method in <tt>ActionController::Base</tt> or any
+  # Additional helpers can be specified using the +helper+ class method in ActionController::Base or any
   # controller which inherits from it.
   #
   # ==== Examples
-  # The +to_s+ method from the Time class can be wrapped in a helper method to display a custom message if
-  # the Time object is blank:
+  # The +to_s+ method from the \Time class can be wrapped in a helper method to display a custom message if
+  # a \Time object is blank:
   #
   #   module FormattedTimeHelper
   #     def format_time(time, format=:long, blank_message="&nbsp;")
@@ -53,30 +53,20 @@ module ActionController
     include AbstractController::Helpers
 
     included do
-      config_accessor :helpers_path
+      config_accessor :helpers_path, :include_all_helpers
       self.helpers_path ||= []
+      self.include_all_helpers = true
     end
 
     module ClassMethods
-      def helpers_dir
-        ActiveSupport::Deprecation.warn "helpers_dir is deprecated, use helpers_path instead", caller
-        self.helpers_path
-      end
-
-      def helpers_dir=(value)
-        ActiveSupport::Deprecation.warn "helpers_dir= is deprecated, use helpers_path= instead", caller
-        self.helpers_path = Array.wrap(value)
-      end
-
       # Declares helper accessors for controller attributes. For example, the
       # following adds new +name+ and <tt>name=</tt> instance methods to a
       # controller and makes them available to the view:
-      #   helper_attr :name
       #   attr_accessor :name
+      #   helper_attr :name
       #
       # ==== Parameters
-      # *attrs<Array[String, Symbol]>:: Names of attributes to be converted
-      #   into helpers.
+      # * <tt>attrs</tt> - Names of attributes to be converted into helpers.
       def helper_attr(*attrs)
         attrs.flatten.each { |attr| helper_method(attr, "#{attr}=") }
       end
@@ -88,25 +78,28 @@ module ActionController
 
       private
         # Overwrite modules_for_helpers to accept :all as argument, which loads
-        # all helpers in helpers_dir.
+        # all helpers in helpers_path.
         #
         # ==== Parameters
-        # args<Array[String, Symbol, Module, all]>:: A list of helpers
+        # * <tt>args</tt> - A list of helpers
         #
         # ==== Returns
-        # Array[Module]:: A normalized list of modules for the list of
-        #   helpers provided.
+        # * <tt>array</tt> - A normalized list of modules for the list of helpers provided.
         def modules_for_helpers(args)
           args += all_application_helpers if args.delete(:all)
           super(args)
         end
 
-        # Extract helper names from files in app/helpers/**/*_helper.rb
+        # Extract helper names from files in <tt>app/helpers/**/*_helper.rb</tt>
         def all_application_helpers
+          all_helpers_from_path(helpers_path)
+        end
+
+        def all_helpers_from_path(path)
           helpers = []
-          Array.wrap(helpers_path).each do |path|
-            extract  = /^#{Regexp.quote(path.to_s)}\/?(.*)_helper.rb$/
-            helpers += Dir["#{path}/**/*_helper.rb"].map { |file| file.sub(extract, '\1') }
+          Array.wrap(path).each do |_path|
+            extract  = /^#{Regexp.quote(_path.to_s)}\/?(.*)_helper.rb$/
+            helpers += Dir["#{_path}/**/*_helper.rb"].map { |file| file.sub(extract, '\1') }
           end
           helpers.sort!
           helpers.uniq!
diff --git a/actionpack/lib/action_controller/metal/hide_actions.rb b/actionpack/lib/action_controller/metal/hide_actions.rb
index 32d7a96701..b55c4643be 100644
--- a/actionpack/lib/action_controller/metal/hide_actions.rb
+++ b/actionpack/lib/action_controller/metal/hide_actions.rb
@@ -1,8 +1,7 @@
 require 'active_support/core_ext/class/attribute'
 
 module ActionController
-  # ActionController::HideActions adds the ability to prevent public methods on a controller
-  # to be called as actions.
+  # Adds the ability to prevent public methods on a controller to be called as actions.
   module HideActions
     extend ActiveSupport::Concern
 
@@ -23,7 +22,7 @@ module ActionController
       # Sets all of the actions passed in as hidden actions.
       #
       # ==== Parameters
-      # *args<#to_s>:: A list of actions
+      # * <tt>args</tt> - A list of actions
       def hide_action(*args)
         self.hidden_actions = hidden_actions.dup.merge(args.map(&:to_s)).freeze
       end
diff --git a/actionpack/lib/action_controller/metal/http_authentication.rb b/actionpack/lib/action_controller/metal/http_authentication.rb
index b0eb24a4a8..39c804d707 100644
--- a/actionpack/lib/action_controller/metal/http_authentication.rb
+++ b/actionpack/lib/action_controller/metal/http_authentication.rb
@@ -3,9 +3,9 @@ require 'active_support/core_ext/object/blank'
 
 module ActionController
   module HttpAuthentication
-    # Makes it dead easy to do HTTP Basic authentication.
+    # Makes it dead easy to do HTTP \Basic and \Digest authentication.
     #
-    # Simple Basic example:
+    # === Simple \Basic example
     #
     #   class PostsController < ApplicationController
     #     USER_NAME, PASSWORD = "dhh", "secret"
@@ -29,7 +29,9 @@ module ActionController
     #   end
     #
     #
-    # Here is a more advanced Basic example where only Atom feeds and the XML API is protected by HTTP authentication,
+    # === Advanced \Basic example
+    #
+    # Here is a more advanced \Basic example where only Atom feeds and the XML API is protected by HTTP authentication,
     # the regular HTML interface is protected by a session approach:
     #
     #   class ApplicationController < ActionController::Base
@@ -69,7 +71,7 @@ module ActionController
     #     assert_equal 200, status
     #   end
     #
-    # Simple Digest example:
+    # === Simple \Digest example
     #
     #   require 'digest/md5'
     #   class PostsController < ApplicationController
@@ -95,18 +97,20 @@ module ActionController
     #       end
     #   end
     #
-    # NOTE: The +authenticate_or_request_with_http_digest+ block must return the user's password or the ha1 digest hash so the framework can appropriately
-    #       hash to check the user's credentials. Returning +nil+ will cause authentication to fail.
-    #       Storing the ha1 hash: MD5(username:realm:password), is better than storing a plain password. If
-    #       the password file or database is compromised, the attacker would be able to use the ha1 hash to
-    #       authenticate as the user at this +realm+, but would not have the user's password to try using at
-    #       other sites.
+    # === Notes
     #
-    # On shared hosts, Apache sometimes doesn't pass authentication headers to
-    # FCGI instances. If your environment matches this description and you cannot
-    # authenticate, try this rule in your Apache setup:
+    # The +authenticate_or_request_with_http_digest+ block must return the user's password
+    # or the ha1 digest hash so the framework can appropriately hash to check the user's
+    # credentials. Returning +nil+ will cause authentication to fail.
     #
-    #   RewriteRule ^(.*)$ dispatch.fcgi [E=X-HTTP_AUTHORIZATION:%{HTTP:Authorization},QSA,L]
+    # Storing the ha1 hash: MD5(username:realm:password), is better than storing a plain password. If
+    # the password file or database is compromised, the attacker would be able to use the ha1 hash to
+    # authenticate as the user at this +realm+, but would not have the user's password to try using at
+    # other sites.
+    #
+    # In rare instances, web servers or front proxies strip authorization headers before
+    # they reach your application. You can debug this situation by logging all environment
+    # variables, and check for HTTP_AUTHORIZATION, amongst others.
     module Basic
       extend self
 
@@ -210,7 +214,7 @@ module ActionController
 
       def encode_credentials(http_method, credentials, password, password_is_ha1)
         credentials[:response] = expected_response(http_method, credentials[:uri], credentials, password, password_is_ha1)
-        "Digest " + credentials.sort_by {|x| x[0].to_s }.inject([]) {|a, v| a << "#{v[0]}='#{v[1]}'" }.join(', ')
+        "Digest " + credentials.sort_by {|x| x[0].to_s }.map {|v| "#{v[0]}='#{v[1]}'" }.join(', ')
       end
 
       def decode_credentials_header(request)
@@ -218,11 +222,10 @@ module ActionController
       end
 
       def decode_credentials(header)
-        header.to_s.gsub(/^Digest\s+/,'').split(',').inject({}) do |hash, pair|
+        Hash[header.to_s.gsub(/^Digest\s+/,'').split(',').map do |pair|
           key, value = pair.split('=', 2)
-          hash[key.strip.to_sym] = value.to_s.gsub(/^"|"$/,'').gsub(/'/, '')
-          hash
-        end
+          [key.strip.to_sym, value.to_s.gsub(/^"|"$/,'').gsub(/'/, '')]
+        end]
       end
 
       def authentication_header(controller, realm)
@@ -392,11 +395,11 @@ module ActionController
         end
       end
 
-      # If token Authorization header is present, call the login procedure with 
+      # If token Authorization header is present, call the login procedure with
       # the present token and options.
       #
       # controller      - ActionController::Base instance for the current request.
-      # login_procedure - Proc to call if a token is present.  The Proc should 
+      # login_procedure - Proc to call if a token is present.  The Proc should
       #                   take 2 arguments:
       #                     authenticate(controller) { |token, options| ... }
       #
@@ -404,7 +407,7 @@ module ActionController
       # Returns nil if no token is found.
       def authenticate(controller, &login_procedure)
         token, options = token_and_options(controller.request)
-        if !token.blank?
+        unless token.blank?
           login_procedure.call(token, options)
         end
       end
@@ -414,20 +417,19 @@ module ActionController
       #   Authorization: Token token="abc", nonce="def"
       # Then the returned token is "abc", and the options is {:nonce => "def"}
       #
-      # request - ActionController::Request instance with the current headers.
+      # request - ActionDispatch::Request instance with the current headers.
       #
       # Returns an Array of [String, Hash] if a token is present.
       # Returns nil if no token is found.
       def token_and_options(request)
         if header = request.authorization.to_s[/^Token (.*)/]
-          values = $1.split(',').
-            inject({}) do |memo, value|
-              value.strip!                      # remove any spaces between commas and values
-              key, value = value.split(/\=\"?/) # split key=value pairs
-              value.chomp!('"')                 # chomp trailing " in value
-              value.gsub!(/\\\"/, '"')          # unescape remaining quotes
-              memo.update(key => value)
-            end
+          values = Hash[$1.split(',').map do |value|
+            value.strip!                      # remove any spaces between commas and values
+            key, value = value.split(/\=\"?/) # split key=value pairs
+            value.chomp!('"')                 # chomp trailing " in value
+            value.gsub!(/\\\"/, '"')          # unescape remaining quotes
+            [key, value]
+          end]
           [values.delete("token"), values.with_indifferent_access]
         end
       end
@@ -439,9 +441,8 @@ module ActionController
       #
       # Returns String.
       def encode_credentials(token, options = {})
-        values = ["token=#{token.to_s.inspect}"]
-        options.each do |key, value|
-          values << "#{key}=#{value.to_s.inspect}"
+        values = ["token=#{token.to_s.inspect}"] + options.map do |key, value|
+          "#{key}=#{value.to_s.inspect}"
         end
         "Token #{values * ", "}"
       end
diff --git a/actionpack/lib/action_controller/metal/implicit_render.rb b/actionpack/lib/action_controller/metal/implicit_render.rb
index 282dcf66b3..cfa7004048 100644
--- a/actionpack/lib/action_controller/metal/implicit_render.rb
+++ b/actionpack/lib/action_controller/metal/implicit_render.rb
@@ -12,10 +12,10 @@ module ActionController
 
     def method_for_action(action_name)
       super || begin
-        if template_exists?(action_name.to_s, _prefix)
+        if template_exists?(action_name.to_s, _prefixes)
           "default_render"
         end
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/metal/instrumentation.rb b/actionpack/lib/action_controller/metal/instrumentation.rb
index b08d9a8434..dc3ea939e6 100644
--- a/actionpack/lib/action_controller/metal/instrumentation.rb
+++ b/actionpack/lib/action_controller/metal/instrumentation.rb
@@ -78,7 +78,7 @@ module ActionController
       yield
     end
 
-    # Everytime after an action is processed, this method is invoked
+    # Every time after an action is processed, this method is invoked
     # with the payload, so you can add more information.
     # :api: plugin
     def append_info_to_payload(payload) #:nodoc:
diff --git a/actionpack/lib/action_controller/metal/mime_responds.rb b/actionpack/lib/action_controller/metal/mime_responds.rb
index c6d4c6d936..a2e06fe0a6 100644
--- a/actionpack/lib/action_controller/metal/mime_responds.rb
+++ b/actionpack/lib/action_controller/metal/mime_responds.rb
@@ -63,13 +63,13 @@ module ActionController #:nodoc:
     # might look something like this:
     #
     #   def index
-    #     @people = Person.find(:all)
+    #     @people = Person.all
     #   end
     #
     # Here's the same action, with web-service support baked in:
     #
     #   def index
-    #     @people = Person.find(:all)
+    #     @people = Person.all
     #
     #     respond_to do |format|
     #       format.html
@@ -155,7 +155,7 @@ module ActionController #:nodoc:
     # Respond to also allows you to specify a common block for different formats by using any:
     #
     #   def index
-    #     @people = Person.find(:all)
+    #     @people = Person.all
     #
     #     respond_to do |format|
     #       format.html
@@ -178,7 +178,7 @@ module ActionController #:nodoc:
     #     respond_to :html, :xml, :json
     #
     #     def index
-    #       @people = Person.find(:all)
+    #       @people = Person.all
     #       respond_with(@person)
     #     end
     #   end
@@ -208,8 +208,8 @@ module ActionController #:nodoc:
     # It also accepts a block to be given. It's used to overwrite a default
     # response:
     #
-    #   def destroy
-    #     @user = User.find(params[:id])
+    #   def create
+    #     @user = User.new(params[:user])
     #     flash[:notice] = "User was successfully created." if @user.save
     #
     #     respond_with(@user) do |format|
@@ -227,7 +227,7 @@ module ActionController #:nodoc:
             "controller responds to in the class level" if self.class.mimes_for_respond_to.empty?
 
       if response = retrieve_response_from_mimes(&block)
-        options = resources.extract_options!
+        options = resources.size == 1 ? {} : resources.extract_options!
         options.merge!(:default_response => response)
         (options.delete(:responder) || self.class.responder).call(self, resources, options)
       end
@@ -258,9 +258,8 @@ module ActionController #:nodoc:
     # nil if :not_acceptable was sent to the client.
     #
     def retrieve_response_from_mimes(mimes=nil, &block)
-      collector = Collector.new { default_render }
       mimes ||= collect_mimes_from_class_level
-      mimes.each { |mime| collector.send(mime) }
+      collector = Collector.new(mimes) { default_render }
       block.call(collector) if block_given?
 
       if format = request.negotiate_mime(collector.order)
@@ -277,8 +276,9 @@ module ActionController #:nodoc:
       include AbstractController::Collector
       attr_accessor :order
 
-      def initialize(&block)
+      def initialize(mimes, &block)
         @order, @responses, @default_response = [], {}, block
+        mimes.each { |mime| send(mime) }
       end
 
       def any(*args, &block)
@@ -291,7 +291,7 @@ module ActionController #:nodoc:
       alias :all :any
 
       def custom(mime_type, &block)
-        mime_type = mime_type.is_a?(Mime::Type) ? mime_type : Mime::Type.lookup(mime_type.to_s)
+        mime_type = Mime::Type.lookup(mime_type.to_s) unless mime_type.is_a?(Mime::Type)
         @order << mime_type
         @responses[mime_type] ||= block
       end
diff --git a/actionpack/lib/action_controller/metal/redirecting.rb b/actionpack/lib/action_controller/metal/redirecting.rb
index b5f1d23ef0..55c650df6c 100644
--- a/actionpack/lib/action_controller/metal/redirecting.rb
+++ b/actionpack/lib/action_controller/metal/redirecting.rb
@@ -20,6 +20,7 @@ module ActionController
     # * <tt>Record</tt> - The URL will be generated by calling url_for with the +options+, which will reference a named URL for that record.
     # * <tt>String</tt> starting with <tt>protocol://</tt> (like <tt>http://</tt>) - Is passed straight through as the target for redirection.
     # * <tt>String</tt> not containing a protocol - The current protocol and host is prepended to the string.
+    # * <tt>Proc</tt> - A block that will be executed in the controller's context. Should return any option accepted by +redirect_to+.
     # * <tt>:back</tt> - Back to the page that issued the request. Useful for forms that are triggered from multiple places.
     #   Short-hand for <tt>redirect_to(request.env["HTTP_REFERER"])</tt>
     #
@@ -30,6 +31,7 @@ module ActionController
     #   redirect_to "/images/screenshot.jpg"
     #   redirect_to articles_url
     #   redirect_to :back
+    #   redirect_to proc { edit_post_url(@post) }
     #
     # The redirection happens as a "302 Moved" header unless otherwise specified.
     #
@@ -39,6 +41,9 @@ module ActionController
     #   redirect_to post_url(@post), :status => 301
     #   redirect_to :action=>'atom', :status => 302
     #
+    # The status code can either be a standard {HTTP Status code}[http://www.iana.org/assignments/http-status-codes] as an
+    # integer, or a symbol representing the downcased, underscored and symbolized description.
+    #
     # It is also possible to assign a flash message as part of the redirection. There are two special accessors for commonly used the flash names
     # +alert+ and +notice+ as well as a general purpose +flash+ bucket.
     #
@@ -48,8 +53,7 @@ module ActionController
     #   redirect_to post_url(@post), :status => 301, :flash => { :updated_post_id => @post.id }
     #   redirect_to { :action=>'atom' }, :alert => "Something serious happened"
     #
-    # When using <tt>redirect_to :back</tt>, if there is no referrer,
-    # RedirectBackError will be raised. You may specify some fallback
+    # When using <tt>redirect_to :back</tt>, if there is no referrer, RedirectBackError will be raised. You may specify some fallback
     # behavior for this case by rescuing RedirectBackError.
     def redirect_to(options = {}, response_status = {}) #:doc:
       raise ActionControllerError.new("Cannot redirect to nil!") if options.nil?
@@ -83,6 +87,8 @@ module ActionController
         when :back
           raise RedirectBackError unless refer = request.headers["Referer"]
           refer
+        when Proc
+          _compute_redirect_to_location options.call
         else
           url_for(options)
         end.gsub(/[\r\n]/, '')
diff --git a/actionpack/lib/action_controller/metal/renderers.rb b/actionpack/lib/action_controller/metal/renderers.rb
index 0be07cd1fc..38711c8462 100644
--- a/actionpack/lib/action_controller/metal/renderers.rb
+++ b/actionpack/lib/action_controller/metal/renderers.rb
@@ -2,6 +2,7 @@ require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/object/blank'
 
 module ActionController
+  # See <tt>Renderers.add</tt>
   def self.add_renderer(key, &block)
     Renderers.add(key, &block)
   end
@@ -15,30 +16,12 @@ module ActionController
     end
 
     module ClassMethods
-      def _write_render_options
-        renderers = _renderers.map do |name, value|
-          <<-RUBY_EVAL
-            if options.key?(:#{name})
-              _process_options(options)
-              return _render_option_#{name}(options.delete(:#{name}), options)
-            end
-          RUBY_EVAL
-        end
-
-        class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
-          def _handle_render_options(options)
-            #{renderers.join}
-          end
-        RUBY_EVAL
-      end
-
       def use_renderers(*args)
         new = _renderers.dup
         args.each do |key|
           new[key] = RENDERERS[key]
         end
         self._renderers = new.freeze
-        _write_render_options
       end
       alias use_renderer use_renderers
     end
@@ -47,31 +30,69 @@ module ActionController
       _handle_render_options(options) || super
     end
 
+    def _handle_render_options(options)
+      _renderers.each do |name, value|
+        if options.key?(name.to_sym)
+          _process_options(options)
+          return send("_render_option_#{name}", options.delete(name.to_sym), options)
+        end
+      end
+      nil
+    end
+
+    # Hash of available renderers, mapping a renderer name to its proc.
+    # Default keys are :json, :js, :xml and :update.
     RENDERERS = {}
+
+    # Adds a new renderer to call within controller actions.
+    # A renderer is invoked by passing its name as an option to
+    # <tt>AbstractController::Rendering#render</tt>. To create a renderer
+    # pass it a name and a block. The block takes two arguments, the first
+    # is the value paired with its key and the second is the remaining
+    # hash of options passed to +render+.
+    #
+    # === Example
+    # Create a csv renderer:
+    #
+    #   ActionController::Renderers.add :csv do |obj, options|
+    #     filename = options[:filename] || 'data'
+    #     str = obj.respond_to?(:to_csv) ? obj.to_csv : obj.to_s
+    #     send_data str, :type => Mime::CSV,
+    #       :disposition => "attachment; filename=#{filename}.csv"
+    #   end
+    #
+    # Note that we used Mime::CSV for the csv mime type as it comes with Rails.
+    # For a custom renderer, you'll need to register a mime type with
+    # <tt>Mime::Type.register</tt>.
+    #
+    # To use the csv renderer in a controller action:
+    #
+    #   def show
+    #     @csvable = Csvable.find(params[:id])
+    #     respond_to do |format|
+    #       format.html
+    #       format.csv { render :csv => @csvable, :filename => @csvable.name }
+    #     }
+    #   end
+    # To use renderers and their mime types in more concise ways, see
+    # <tt>ActionController::MimeResponds::ClassMethods.respond_to</tt> and
+    # <tt>ActionController::MimeResponds#respond_with</tt>
     def self.add(key, &block)
       define_method("_render_option_#{key}", &block)
       RENDERERS[key] = block
-      All._write_render_options
     end
 
     module All
       extend ActiveSupport::Concern
       include Renderers
 
-      INCLUDED = []
       included do
         self._renderers = RENDERERS
-        _write_render_options
-        INCLUDED << self
-      end
-
-      def self._write_render_options
-        INCLUDED.each(&:_write_render_options)
       end
     end
 
     add :json do |json, options|
-      json = ActiveSupport::JSON.encode(json, options) unless json.respond_to?(:to_str)
+      json = json.to_json(options) unless json.kind_of?(String)
       json = "#{options[:callback]}(#{json})" unless options[:callback].blank?
       self.content_type ||= Mime::JSON
       self.response_body  = json
diff --git a/actionpack/lib/action_controller/metal/rendering.rb b/actionpack/lib/action_controller/metal/rendering.rb
index 86bb810947..32d52c84c4 100644
--- a/actionpack/lib/action_controller/metal/rendering.rb
+++ b/actionpack/lib/action_controller/metal/rendering.rb
@@ -2,12 +2,11 @@ module ActionController
   module Rendering
     extend ActiveSupport::Concern
 
-    include ActionController::RackDelegation
     include AbstractController::Rendering
 
     # Before processing, set the request formats in current controller formats.
     def process_action(*) #:nodoc:
-      self.formats = request.formats.map { |x| x.to_sym }
+      self.formats = request.formats.map { |x| x.ref }
       super
     end
 
@@ -21,36 +20,35 @@ module ActionController
 
     private
 
-      # Normalize arguments by catching blocks and setting them on :update.
-      def _normalize_args(action=nil, options={}, &blk) #:nodoc:
-        options = super
-        options[:update] = blk if block_given?
-        options
-      end
-
-      # Normalize both text and status options.
-      def _normalize_options(options) #:nodoc:
-        if options.key?(:text) && options[:text].respond_to?(:to_text)
-          options[:text] = options[:text].to_text
-        end
+    # Normalize arguments by catching blocks and setting them on :update.
+    def _normalize_args(action=nil, options={}, &blk) #:nodoc:
+      options = super
+      options[:update] = blk if block_given?
+      options
+    end
 
-        if options[:status]
-          options[:status] = Rack::Utils.status_code(options[:status])
-        end
+    # Normalize both text and status options.
+    def _normalize_options(options) #:nodoc:
+      if options.key?(:text) && options[:text].respond_to?(:to_text)
+        options[:text] = options[:text].to_text
+      end
 
-        super
+      if options[:status]
+        options[:status] = Rack::Utils.status_code(options[:status])
       end
 
-      # Process controller specific options, as status, content-type and location.
-      def _process_options(options) #:nodoc:
-        status, content_type, location = options.values_at(:status, :content_type, :location)
+      super
+    end
 
-        self.status = status if status
-        self.content_type = content_type if content_type
-        self.headers["Location"] = url_for(location) if location
+    # Process controller specific options, as status, content-type and location.
+    def _process_options(options) #:nodoc:
+      status, content_type, location = options.values_at(:status, :content_type, :location)
 
-        super
-      end
+      self.status = status if status
+      self.content_type = content_type if content_type
+      self.headers["Location"] = url_for(location) if location
 
+      super
+    end
   end
 end
diff --git a/actionpack/lib/action_controller/metal/request_forgery_protection.rb b/actionpack/lib/action_controller/metal/request_forgery_protection.rb
index b632e7aab6..1cd93a188c 100644
--- a/actionpack/lib/action_controller/metal/request_forgery_protection.rb
+++ b/actionpack/lib/action_controller/metal/request_forgery_protection.rb
@@ -4,45 +4,27 @@ module ActionController #:nodoc:
   class InvalidAuthenticityToken < ActionControllerError #:nodoc:
   end
 
-  # Protecting controller actions from CSRF attacks by ensuring that all forms are coming from the current
-  # web application, not a forged link from another site, is done by embedding a token based on a random
-  # string stored in the session (which an attacker wouldn't know) in all forms and Ajax requests generated
-  # by Rails and then verifying the authenticity of that token in the controller.  Only HTML/JavaScript
-  # requests are checked, so this will not protect your XML API (presumably you'll have a different
-  # authentication scheme there anyway).  Also, GET requests are not protected as these should be
-  # idempotent anyway.
+  # Controller actions are protected from Cross-Site Request Forgery (CSRF) attacks
+  # by including a token in the rendered html for your application. This token is
+  # stored as a random string in the session, to which an attacker does not have
+  # access. When a request reaches your application, \Rails then verifies the received
+  # token with the token in the session. Only HTML and javascript requests are checked,
+  # so this will not protect your XML API (presumably you'll have a different
+  # authentication scheme there anyway). Also, GET requests are not protected as these
+  # should be idempotent.
   #
-  # This is turned on with the <tt>protect_from_forgery</tt> method, which will check the token and raise an
-  # ActionController::InvalidAuthenticityToken if it doesn't match what was expected. You can customize the
-  # error message in production by editing public/422.html.  A call to this method in ApplicationController is
-  # generated by default in post-Rails 2.0 applications.
+  # CSRF protection is turned on with the <tt>protect_from_forgery</tt> method,
+  # which will check the token and raise an ActionController::InvalidAuthenticityToken
+  # if it doesn't match what was expected. A call to this method is generated for new
+  # \Rails applications by default. You can customize the error message by editing
+  # public/422.html.
   #
-  # The token parameter is named <tt>authenticity_token</tt> by default. If you are generating an HTML form
-  # manually (without the use of Rails' <tt>form_for</tt>, <tt>form_tag</tt> or other helpers), you have to
-  # include a hidden field named like that and set its value to what is returned by
-  # <tt>form_authenticity_token</tt>.
-  #
-  # Request forgery protection is disabled by default in test environment. If you are upgrading from Rails
-  # 1.x, add this to config/environments/test.rb:
-  #
-  #   # Disable request forgery protection in test environment
-  #   config.action_controller.allow_forgery_protection = false
-  #
-  # == Learn more about CSRF (Cross-Site Request Forgery) attacks
-  #
-  # Here are some resources:
-  # * http://isc.sans.org/diary.html?storyid=1750
-  # * http://en.wikipedia.org/wiki/Cross-site_request_forgery
-  #
-  # Keep in mind, this is NOT a silver-bullet, plug 'n' play, warm security blanket for your rails application.
-  # There are a few guidelines you should follow:
-  #
-  # * Keep your GET requests safe and idempotent.  More reading material:
-  #   * http://www.xml.com/pub/a/2002/04/24/deviant.html
-  #   * http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1.1
-  #   * Make sure the session cookies that Rails creates are non-persistent.  Check in Firefox and look
-  #     for "Expires: at end of session"
+  # The token parameter is named <tt>authenticity_token</tt> by default. The name and
+  # value of this token must be added to every layout that renders forms by including
+  # <tt>csrf_meta_tags</tt> in the html +head+.
   #
+  # Learn more about CSRF attacks and securing your application in the
+  # {Ruby on Rails Security Guide}[http://guides.rubyonrails.org/security.html].
   module RequestForgeryProtection
     extend ActiveSupport::Concern
 
@@ -71,39 +53,42 @@ module ActionController #:nodoc:
       #   class FooController < ApplicationController
       #     protect_from_forgery :except => :index
       #
-      #     # you can disable csrf protection on controller-by-controller basis:
-      #     skip_before_filter :verify_authenticity_token
-      #   end
+      # You can disable csrf protection on controller-by-controller basis:
+      #
+      #   skip_before_filter :verify_authenticity_token
+      #
+      # It can also be disabled for specific controller actions:
+      #
+      #   skip_before_filter :verify_authenticity_token, :except => [:create]
       #
       # Valid Options:
       #
       # * <tt>:only/:except</tt> - Passed to the <tt>before_filter</tt> call.  Set which actions are verified.
       def protect_from_forgery(options = {})
         self.request_forgery_protection_token ||= :authenticity_token
-        before_filter :verify_authenticity_token, options
+        prepend_before_filter :verify_authenticity_token, options
       end
     end
 
     protected
-
-      def protect_from_forgery(options = {})
-        self.request_forgery_protection_token ||= :authenticity_token
-        before_filter :verify_authenticity_token, options
-      end
-
       # The actual before_filter that is used.  Modify this to change how you handle unverified requests.
       def verify_authenticity_token
-        verified_request? || raise(ActionController::InvalidAuthenticityToken)
+        verified_request? || handle_unverified_request
+      end
+
+      def handle_unverified_request
+        reset_session
       end
 
       # Returns true or false if a request is verified.  Checks:
       #
-      # * is the format restricted?  By default, only HTML requests are checked.
       # * is it a GET request?  Gets should be safe and idempotent
       # * Does the form_authenticity_token match the given token value from the params?
+      # * Does the X-CSRF-Token header match the form_authenticity_token
       def verified_request?
-        !protect_against_forgery? || request.forgery_whitelisted? ||
-          form_authenticity_token == params[request_forgery_protection_token]
+        !protect_against_forgery? || request.get? ||
+          form_authenticity_token == params[request_forgery_protection_token] ||
+          form_authenticity_token == request.headers['X-CSRF-Token']
       end
 
       # Sets the token value for the current session.
diff --git a/actionpack/lib/action_controller/metal/responder.rb b/actionpack/lib/action_controller/metal/responder.rb
index cb644dfd16..4b45413cf8 100644
--- a/actionpack/lib/action_controller/metal/responder.rb
+++ b/actionpack/lib/action_controller/metal/responder.rb
@@ -1,7 +1,7 @@
 require 'active_support/json'
 
 module ActionController #:nodoc:
-  # Responder is responsible for exposing a resource to different mime requests,
+  # Responsible for exposing a resource to different mime requests,
   # usually depending on the HTTP verb. The responder is triggered when
   # <code>respond_with</code> is called. The simplest case to study is a GET request:
   #
@@ -24,10 +24,10 @@ module ActionController #:nodoc:
   #
   # === Builtin HTTP verb semantics
   #
-  # The default Rails responder holds semantics for each HTTP verb. Depending on the
+  # The default \Rails responder holds semantics for each HTTP verb. Depending on the
   # content type, verb and the resource status, it will behave differently.
   #
-  # Using Rails default responder, a POST request for creating an object could
+  # Using \Rails default responder, a POST request for creating an object could
   # be written as:
   #
   #   def create
@@ -77,8 +77,6 @@ module ActionController #:nodoc:
   #
   #   respond_with(@project, :manager, @task)
   #
-  # Check <code>polymorphic_url</code> documentation for more examples.
-  #
   class Responder
     attr_reader :controller, :request, :format, :resource, :resources, :options
 
@@ -89,6 +87,8 @@ module ActionController #:nodoc:
 
     def initialize(controller, resources, options={})
       @controller = controller
+      @request = @controller.request
+      @format = @controller.formats.first
       @resource = resources.last
       @resources = resources
       @options = options
@@ -99,14 +99,6 @@ module ActionController #:nodoc:
     delegate :head, :render, :redirect_to,   :to => :controller
     delegate :get?, :post?, :put?, :delete?, :to => :request
 
-    def request
-      @request ||= @controller.request
-    end
-
-    def format
-      @format ||= @controller.formats.first
-    end
-
     # Undefine :to_json and :to_yaml since it's defined on Object
     undef_method(:to_json) if method_defined?(:to_json)
     undef_method(:to_yaml) if method_defined?(:to_yaml)
@@ -121,7 +113,7 @@ module ActionController #:nodoc:
     # Main entry point for responder responsible to dispatch to the proper format.
     #
     def respond
-      method = :"to_#{format}"
+      method = "to_#{format}"
       respond_to?(method) ? send(method) : to_format
     end
 
@@ -146,7 +138,7 @@ module ActionController #:nodoc:
 
   protected
 
-    # This is the common behavior for "navigation" requests, like :html, :iphone and so forth.
+    # This is the common behavior for formats associated with browsing, like :html, :iphone and so forth.
     def navigation_behavior(error)
       if get?
         raise error
@@ -157,7 +149,7 @@ module ActionController #:nodoc:
       end
     end
 
-    # This is the common behavior for "API" requests, like :xml and :json.
+    # This is the common behavior for formats associated with APIs, such as :xml and :json.
     def api_behavior(error)
       raise error unless resourceful?
 
@@ -167,6 +159,8 @@ module ActionController #:nodoc:
         display resource.errors, :status => :unprocessable_entity
       elsif post?
         display resource, :status => :created, :location => api_location
+      elsif has_empty_resource_definition?
+        display empty_resource, :status => :ok
       else
         head :ok
       end
@@ -175,7 +169,7 @@ module ActionController #:nodoc:
     # Checks whether the resource responds to the current format or not.
     #
     def resourceful?
-      resource.respond_to?(:"to_#{format}")
+      resource.respond_to?("to_#{format}")
     end
 
     # Returns the resource location by retrieving it from the options or
@@ -227,5 +221,23 @@ module ActionController #:nodoc:
     def default_action
       @action ||= ACTIONS_FOR_VERBS[request.request_method_symbol]
     end
+
+    # Check whether resource needs a specific definition of empty resource to be valid
+    #
+    def has_empty_resource_definition?
+      respond_to?("empty_#{format}_resource")
+    end
+
+    # Delegate to proper empty resource method
+    #
+    def empty_resource
+      send("empty_#{format}_resource")
+    end
+
+    # Return a valid empty JSON resource
+    #
+    def empty_json_resource
+      "{}"
+    end
   end
 end
diff --git a/actionpack/lib/action_controller/metal/streaming.rb b/actionpack/lib/action_controller/metal/streaming.rb
index d75b46dace..312dc8eb3e 100644
--- a/actionpack/lib/action_controller/metal/streaming.rb
+++ b/actionpack/lib/action_controller/metal/streaming.rb
@@ -69,10 +69,6 @@ module ActionController #:nodoc:
         options[:filename] ||= File.basename(path) unless options[:url_based_filename]
         send_file_headers! options
 
-        if options[:x_sendfile]
-          ActiveSupport::Deprecation.warn(":x_sendfile is no longer needed in send_file", caller)
-        end
-
         self.status = options[:status] || 200
         self.content_type = options[:content_type] if options.key?(:content_type)
         self.response_body = File.open(path, "rb")
@@ -105,10 +101,6 @@ module ActionController #:nodoc:
       #   send_data image.data, :type => image.content_type, :disposition => 'inline'
       #
       # See +send_file+ for more information on HTTP Content-* headers and caching.
-      #
-      # <b>Tip:</b> if you want to stream large amounts of on-the-fly generated
-      # data to the browser, then use <tt>render :text => proc { ... }</tt>
-      # instead. See ActionController::Base#render for more information.
       def send_data(data, options = {}) #:doc:
         send_file_headers! options.dup
         render options.slice(:status, :content_type).merge(:text => data)
@@ -121,10 +113,6 @@ module ActionController #:nodoc:
           raise ArgumentError, ":#{arg} option required" if options[arg].nil?
         end
 
-        if options.key?(:length)
-          ActiveSupport::Deprecation.warn("You do not need to provide the file's length", caller)
-        end
-
         disposition = options[:disposition]
         disposition += %(; filename="#{options[:filename]}") if options[:filename]
 
diff --git a/actionpack/lib/action_controller/metal/testing.rb b/actionpack/lib/action_controller/metal/testing.rb
index 4b8c452d50..f4efeb33ba 100644
--- a/actionpack/lib/action_controller/metal/testing.rb
+++ b/actionpack/lib/action_controller/metal/testing.rb
@@ -14,18 +14,9 @@ module ActionController
         cookies.write(@_response)
       end
       @_response.prepare!
-      set_test_assigns
       ret
     end
 
-    def set_test_assigns
-      @assigns = {}
-      (instance_variable_names - self.class.protected_instance_variables).each do |var|
-        name, value = var[1..-1], instance_variable_get(var)
-        @assigns[name] = value
-      end
-    end
-
     # TODO : Rewrite tests using controller.headers= to use Rack env
     def headers=(new_headers)
       @_response ||= ActionDispatch::Response.new
diff --git a/actionpack/lib/action_controller/metal/url_for.rb b/actionpack/lib/action_controller/metal/url_for.rb
index a51fc5b8e4..6fc0cf1fb8 100644
--- a/actionpack/lib/action_controller/metal/url_for.rb
+++ b/actionpack/lib/action_controller/metal/url_for.rb
@@ -2,27 +2,25 @@ module ActionController
   module UrlFor
     extend ActiveSupport::Concern
 
-    include ActionDispatch::Routing::UrlFor
+    include AbstractController::UrlFor
 
     def url_options
-      super.reverse_merge(
-        :host => request.host_with_port,
+      @_url_options ||= super.reverse_merge(
+        :host => request.host,
+        :port => request.optional_port,
         :protocol => request.protocol,
         :_path_segments => request.symbolized_path_parameters
-      ).merge(:script_name => request.script_name)
-    end
-
-    def _routes
-      raise "In order to use #url_for, you must include routing helpers explicitly. " \
-            "For instance, `include Rails.application.routes.url_helpers"
-    end
+      ).freeze
 
-    module ClassMethods
-      def action_methods
-        @action_methods ||= begin
-          super - _routes.named_routes.helper_names
+      if _routes.equal?(env["action_dispatch.routes"])
+        @_url_options.dup.tap do |options|
+          options[:script_name] = request.script_name.dup
+          options.freeze
         end
+      else
+        @_url_options
       end
     end
+
   end
 end
diff --git a/actionpack/lib/action_controller/middleware.rb b/actionpack/lib/action_controller/middleware.rb
index 2115b07b3e..437fec3dc6 100644
--- a/actionpack/lib/action_controller/middleware.rb
+++ b/actionpack/lib/action_controller/middleware.rb
@@ -31,7 +31,7 @@ module ActionController
       super()
       @_app = app
     end
-    
+
     def index
       call(env)
     end
diff --git a/actionpack/lib/action_controller/railtie.rb b/actionpack/lib/action_controller/railtie.rb
index cd2dfafbe6..f0c29825ba 100644
--- a/actionpack/lib/action_controller/railtie.rb
+++ b/actionpack/lib/action_controller/railtie.rb
@@ -2,35 +2,13 @@ require "rails"
 require "action_controller"
 require "action_dispatch/railtie"
 require "action_view/railtie"
-require "active_support/deprecation/proxy_wrappers"
-require "active_support/deprecation"
+require "abstract_controller/railties/routes_helpers"
+require "action_controller/railties/paths"
 
 module ActionController
   class Railtie < Rails::Railtie
     config.action_controller = ActiveSupport::OrderedOptions.new
 
-    config.action_controller.singleton_class.tap do |d|
-      d.send(:define_method, :session) do
-        ActiveSupport::Deprecation.warn "config.action_controller.session has been deprecated. " <<
-          "Please use Rails.application.config.session_store instead.", caller
-      end
-
-      d.send(:define_method, :session=) do |val|
-        ActiveSupport::Deprecation.warn "config.action_controller.session= has been deprecated. " <<
-          "Please use config.session_store(name, options) instead.", caller
-      end
-
-      d.send(:define_method, :session_store) do
-        ActiveSupport::Deprecation.warn "config.action_controller.session_store has been deprecated. " <<
-          "Please use Rails.application.config.session_store instead.", caller
-      end
-
-      d.send(:define_method, :session_store=) do |val|
-        ActiveSupport::Deprecation.warn "config.action_controller.session_store= has been deprecated. " <<
-          "Please use config.session_store(name, options) instead.", caller
-      end
-    end
-
     initializer "action_controller.logger" do
       ActiveSupport.on_load(:action_controller) { self.logger ||= Rails.logger }
     end
@@ -43,24 +21,27 @@ module ActionController
       paths   = app.config.paths
       options = app.config.action_controller
 
-      options.assets_dir           ||= paths.public.to_a.first
-      options.javascripts_dir      ||= paths.public.javascripts.to_a.first
-      options.stylesheets_dir      ||= paths.public.stylesheets.to_a.first
-      options.page_cache_directory ||= paths.public.to_a.first
-      options.helpers_path         ||= paths.app.helpers.to_a
+      options.assets_dir           ||= paths["public"].first
+      options.javascripts_dir      ||= paths["public/javascripts"].first
+      options.stylesheets_dir      ||= paths["public/stylesheets"].first
+      options.page_cache_directory ||= paths["public"].first
+
+      # make sure readers methods get compiled
+      options.asset_path           ||= app.config.asset_path
+      options.asset_host           ||= app.config.asset_host
 
       ActiveSupport.on_load(:action_controller) do
-        include app.routes.url_helpers
+        include app.routes.mounted_helpers
+        extend ::AbstractController::Railties::RoutesHelpers.with(app.routes)
+        extend ::ActionController::Railties::Paths.with(app)
         options.each { |k,v| send("#{k}=", v) }
       end
     end
 
-    initializer "action_controller.deprecated_routes" do |app|
-      message = "ActionController::Routing::Routes is deprecated. " \
-                "Instead, use Rails.application.routes"
-
-      proxy = ActiveSupport::Deprecation::DeprecatedObjectProxy.new(app.routes, message)
-      ActionController::Routing::Routes = proxy
+    initializer "action_controller.compile_config_methods" do
+      ActiveSupport.on_load(:action_controller) do
+        config.compile_methods! if config.respond_to?(:compile_methods!)
+      end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/railties/paths.rb b/actionpack/lib/action_controller/railties/paths.rb
new file mode 100644
index 0000000000..dce3c2fe88
--- /dev/null
+++ b/actionpack/lib/action_controller/railties/paths.rb
@@ -0,0 +1,32 @@
+module ActionController
+  module Railties
+    module Paths
+      def self.with(app)
+        Module.new do
+          define_method(:inherited) do |klass|
+            super(klass)
+
+            if namespace = klass.parents.detect {|m| m.respond_to?(:_railtie) }
+              paths = namespace._railtie.paths["app/helpers"].existent
+            else
+              paths = app.config.helpers_paths
+            end
+
+            klass.helpers_path = paths
+            if klass.superclass == ActionController::Base && ActionController::Base.include_all_helpers
+              klass.helper :all
+            end
+
+            if app.config.serve_static_assets && namespace
+              paths = namespace._railtie.config.paths
+
+              klass.config.assets_dir      = paths["public"].first
+              klass.config.javascripts_dir = paths["public/javascripts"].first
+              klass.config.stylesheets_dir = paths["public/stylesheets"].first
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/test_case.rb b/actionpack/lib/action_controller/test_case.rb
index e306697f4b..bc4f8bb9ce 100644
--- a/actionpack/lib/action_controller/test_case.rb
+++ b/actionpack/lib/action_controller/test_case.rb
@@ -1,6 +1,7 @@
 require 'rack/session/abstract/id'
 require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/object/to_query'
+require 'active_support/core_ext/class/attribute'
 
 module ActionController
   module TemplateAssertions
@@ -40,6 +41,13 @@ module ActionController
       ActiveSupport::Notifications.unsubscribe("!render_template.action_view")
     end
 
+    def process(*args)
+      @partials = Hash.new(0)
+      @templates = Hash.new(0)
+      @layouts = Hash.new(0)
+      super
+    end
+
     # Asserts that the request was rendered with the appropriate template file or partials.
     #
     # ==== Examples
@@ -127,7 +135,7 @@ module ActionController
     class Result < ::Array #:nodoc:
       def to_s() join '/' end
       def self.new_escaped(strings)
-        new strings.collect {|str| URI.unescape str}
+        new strings.collect {|str| uri_parser.unescape str}
       end
     end
 
@@ -164,9 +172,14 @@ module ActionController
     end
 
     def recycle!
+      write_cookies!
+      @env.delete('HTTP_COOKIE') if @cookies.blank?
+      @env.delete('action_dispatch.cookies')
+      @cookies = nil
       @formats = nil
       @env.delete_if { |k, v| k =~ /^(action_dispatch|rack)\.request/ }
       @env.delete_if { |k, v| k =~ /^action_dispatch\.rescue/ }
+      @symbolized_path_params = nil
       @method = @request_method = nil
       @fullpath = @ip = @remote_ip = nil
       @env['action_dispatch.request.query_parameters'] = {}
@@ -186,20 +199,23 @@ module ActionController
     end
   end
 
-  class TestSession < ActionDispatch::Session::AbstractStore::SessionHash #:nodoc:
-    DEFAULT_OPTIONS = ActionDispatch::Session::AbstractStore::DEFAULT_OPTIONS
+  class TestSession < Rack::Session::Abstract::SessionHash #:nodoc:
+    DEFAULT_OPTIONS = Rack::Session::Abstract::ID::DEFAULT_OPTIONS
 
     def initialize(session = {})
+      @env, @by = nil, nil
       replace(session.stringify_keys)
       @loaded = true
     end
 
-    def exists?; true; end
+    def exists?
+      true
+    end
   end
 
   # Superclass for ActionController functional tests. Functional tests allow you to
   # test a single controller action per test method. This should not be confused with
-  # integration tests (see ActionController::IntegrationTest), which are more like
+  # integration tests (see ActionDispatch::IntegrationTest), which are more like
   # "stories" that can involve multiple controllers and multiple actions (i.e. multiple
   # different HTTP requests).
   #
@@ -244,7 +260,7 @@ module ActionController
   #      after calling +post+. If the various assert methods are not sufficient, then you
   #      may use this object to inspect the HTTP response in detail.
   #
-  # (Earlier versions of Rails required each functional test to subclass
+  # (Earlier versions of \Rails required each functional test to subclass
   # Test::Unit::TestCase and define @controller, @request, @response in +setup+.)
   #
   # == Controller is automatically inferred
@@ -257,7 +273,7 @@ module ActionController
   #     tests WidgetController
   #   end
   #
-  # == Testing controller internals
+  # == \Testing controller internals
   #
   # In addition to these specific assertions, you also have easy access to various collections that the regular test/unit assertions
   # can be used against. These collections are:
@@ -265,7 +281,7 @@ module ActionController
   # * assigns: Instance variables assigned in the action that are available for the view.
   # * session: Objects being saved in the session.
   # * flash: The flash objects currently in the session.
-  # * cookies: Cookies being sent to the user on this request.
+  # * cookies: \Cookies being sent to the user on this request.
   #
   # These collections can be used just like any other hash:
   #
@@ -289,9 +305,13 @@ module ActionController
   # and cookies, though. For sessions, you just do:
   #
   #   @request.session[:key] = "value"
-  #   @request.cookies["key"] = "value"
+  #   @request.cookies[:key] = "value"
+  #
+  # To clear the cookies for a test just clear the request's cookies hash:
+  #
+  #   @request.cookies.clear
   #
-  # == Testing named routes
+  # == \Testing named routes
   #
   # If you're using named routes, they can be easily tested using the original named routes' methods straight in the test case.
   # Example:
@@ -311,14 +331,14 @@ module ActionController
         def tests(controller_class)
           self.controller_class = controller_class
         end
-        
+
         def controller_class=(new_class)
           prepare_controller_class(new_class) if new_class
-          write_inheritable_attribute(:controller_class, new_class)
+          self._controller_class = new_class
         end
 
         def controller_class
-          if current_controller_class = read_inheritable_attribute(:controller_class)
+          if current_controller_class = self._controller_class
             current_controller_class
           else
             self.controller_class = determine_default_controller_class(name)
@@ -393,16 +413,18 @@ module ActionController
         parameters ||= {}
         @request.assign_parameters(@routes, @controller.class.name.underscore.sub(/_controller$/, ''), action.to_s, parameters)
 
-        @request.session = ActionController::TestSession.new(session) unless session.nil?
+        @request.session = ActionController::TestSession.new(session) if session
         @request.session["flash"] = @request.flash.update(flash || {})
         @request.session["flash"].sweep
 
         @controller.request = @request
         @controller.params.merge!(parameters)
         build_request_uri(action, parameters)
-        Base.class_eval { include Testing }
+        @controller.class.class_eval { include Testing }
         @controller.process_with_new_base_test(@request, @response)
+        @assigns = @controller.respond_to?(:view_assigns) ? @controller.view_assigns : {}
         @request.session.delete('flash') if @request.session['flash'].blank?
+        @request.cookies.merge!(@response.cookies)
         @response
       end
 
@@ -416,7 +438,7 @@ module ActionController
 
         @request.env.delete('PATH_INFO')
 
-        if @controller
+        if defined?(@controller) && @controller
           @controller.request = @request
           @controller.params = {}
         end
@@ -430,6 +452,7 @@ module ActionController
       included do
         include ActionController::TemplateAssertions
         include ActionDispatch::Assertions
+        class_attribute :_controller_class
         setup :setup_controller_request_and_response
       end
 
@@ -437,7 +460,7 @@ module ActionController
 
       def build_request_uri(action, parameters)
         unless @request.env["PATH_INFO"]
-          options = @controller.__send__(:url_options).merge(parameters)
+          options = @controller.respond_to?(:url_options) ? @controller.__send__(:url_options).merge(parameters) : parameters
           options.update(
             :only_path => true,
             :action => action,
@@ -461,9 +484,11 @@ module ActionController
     # The exception is stored in the exception accessor for further inspection.
     module RaiseActionExceptions
       def self.included(base)
-        base.class_eval do
-          attr_accessor :exception
-          protected :exception, :exception=
+        unless base.method_defined?(:exception) && base.method_defined?(:exception=)
+          base.class_eval do
+            attr_accessor :exception
+            protected :exception, :exception=
+          end
         end
       end
 
diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/document.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/document.rb
index b8d73c350d..7fa3aead82 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/document.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/document.rb
@@ -48,7 +48,7 @@ EOF
         end
       end
     end
-  
+
     # Search the tree for (and return) the first node that matches the given
     # conditions. The conditions are interpreted differently for different node
     # types, see HTML::Text#find and HTML::Tag#find.
@@ -62,7 +62,7 @@ EOF
     def find_all(conditions)
       @root.find_all(conditions)
     end
-    
+
   end
 
 end
diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/node.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/node.rb
index a874519978..22b3243104 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/node.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/node.rb
@@ -1,7 +1,7 @@
 require 'strscan'
 
 module HTML #:nodoc:
-  
+
   class Conditions < Hash #:nodoc:
     def initialize(hash)
       super()
@@ -18,14 +18,14 @@ module HTML #:nodoc:
             hash[k] = Conditions.new(v)
           when :children
             hash[k] = v = keys_to_symbols(v)
-            v.each do |k,v2|
-              case k
+            v.each do |key,value|
+              case key
                 when :count, :greater_than, :less_than
                   # keys are valid, and require no further processing
                 when :only
-                  v[k] = Conditions.new(v2)
+                  v[key] = Conditions.new(value)
                 else
-                  raise "illegal key #{k.inspect} => #{v2.inspect}"
+                  raise "illegal key #{key.inspect} => #{value.inspect}"
               end
             end
           else
@@ -38,18 +38,14 @@ module HTML #:nodoc:
     private
 
       def keys_to_strings(hash)
-        hash.keys.inject({}) do |h,k|
-          h[k.to_s] = hash[k]
-          h
-        end
+        Hash[hash.keys.map {|k| [k.to_s, hash[k]]}]
       end
 
       def keys_to_symbols(hash)
-        hash.keys.inject({}) do |h,k|
+        Hash[hash.keys.map do |k|
           raise "illegal key #{k.inspect}" unless k.respond_to?(:to_sym)
-          h[k.to_sym] = hash[k]
-          h
-        end
+          [k.to_sym, hash[k]]
+        end]
       end
   end
 
@@ -57,17 +53,17 @@ module HTML #:nodoc:
   class Node #:nodoc:
     # The array of children of this node. Not all nodes have children.
     attr_reader :children
-    
+
     # The parent node of this node. All nodes have a parent, except for the
     # root node.
     attr_reader :parent
-    
+
     # The line number of the input where this node was begun
     attr_reader :line
-    
+
     # The byte position in the input where this node was begun
     attr_reader :position
-    
+
     # Create a new node as a child of the given parent.
     def initialize(parent, line=0, pos=0)
       @parent = parent
@@ -77,9 +73,7 @@ module HTML #:nodoc:
 
     # Return a textual representation of the node.
     def to_s
-      s = ""
-      @children.each { |child| s << child.to_s }
-      s
+      @children.join()
     end
 
     # Return false (subclasses must override this to provide specific matching
@@ -92,7 +86,7 @@ module HTML #:nodoc:
     # returns non +nil+. Returns the result of the #find call that succeeded.
     def find(conditions)
       conditions = validate_conditions(conditions)
-      @children.each do |child|        
+      @children.each do |child|
         node = child.find(conditions)
         return node if node
       end
@@ -133,7 +127,7 @@ module HTML #:nodoc:
 
       equivalent
     end
-    
+
     class <<self
       def parse(parent, line, pos, content, strict=true)
         if content !~ /^<\S/
@@ -160,11 +154,11 @@ module HTML #:nodoc:
 
             return CDATA.new(parent, line, pos, scanner.pre_match.gsub(/<!\[CDATA\[/, ''))
           end
-          
+
           closing = ( scanner.scan(/\//) ? :close : nil )
           return Text.new(parent, line, pos, content) unless name = scanner.scan(/[\w:-]+/)
           name.downcase!
-  
+
           unless closing
             scanner.skip(/\s*/)
             attributes = {}
@@ -191,13 +185,13 @@ module HTML #:nodoc:
               attributes[attr.downcase] = value
               scanner.skip(/\s*/)
             end
-    
+
             closing = ( scanner.scan(/\//) ? :self : nil )
           end
-          
+
           unless scanner.scan(/\s*>/)
             if strict
-              raise "expected > (got #{scanner.rest.inspect} for #{content}, #{attributes.inspect})" 
+              raise "expected > (got #{scanner.rest.inspect} for #{content}, #{attributes.inspect})"
             else
               # throw away all text until we find what we're looking for
               scanner.skip_until(/>/) or scanner.terminate
@@ -212,9 +206,9 @@ module HTML #:nodoc:
 
   # A node that represents text, rather than markup.
   class Text < Node #:nodoc:
-    
+
     attr_reader :content
-    
+
     # Creates a new text node as a child of the given parent, with the given
     # content.
     def initialize(parent, line, pos, content)
@@ -240,7 +234,7 @@ module HTML #:nodoc:
     def find(conditions)
       match(conditions) && self
     end
-    
+
     # Returns non-+nil+ if this node meets the given conditions, or +nil+
     # otherwise. See the discussion of #find for the valid conditions.
     def match(conditions)
@@ -268,7 +262,7 @@ module HTML #:nodoc:
       content == node.content
     end
   end
-  
+
   # A CDATA node is simply a text node with a specialized way of displaying
   # itself.
   class CDATA < Text #:nodoc:
@@ -281,16 +275,16 @@ module HTML #:nodoc:
   # closing tag, or a self-closing tag. It has a name, and may have a hash of
   # attributes.
   class Tag < Node #:nodoc:
-    
+
     # Either +nil+, <tt>:close</tt>, or <tt>:self</tt>
     attr_reader :closing
-    
+
     # Either +nil+, or a hash of attributes for this node.
     attr_reader :attributes
 
     # The name of this tag.
     attr_reader :name
-        
+
     # Create a new node as a child of the given parent, using the given content
     # to describe the node. It will be parsed and the node name, attributes and
     # closing status extracted.
@@ -344,7 +338,7 @@ module HTML #:nodoc:
     def tag?
       true
     end
-    
+
     # Returns +true+ if the node meets any of the given conditions. The
     # +conditions+ parameter must be a hash of any of the following keys
     # (all are optional):
@@ -404,7 +398,7 @@ module HTML #:nodoc:
     #   node.match :descendant => { :tag => "strong" }
     #
     #   # test if the node has between 2 and 4 span tags as immediate children
-    #   node.match :children => { :count => 2..4, :only => { :tag => "span" } } 
+    #   node.match :children => { :count => 2..4, :only => { :tag => "span" } }
     #
     #   # get funky: test to see if the node is a "div", has a "ul" ancestor
     #   # and an "li" parent (with "class" = "enum"), and whether or not it has
@@ -439,7 +433,7 @@ module HTML #:nodoc:
 
       # test children
       return false unless children.find { |child| child.match(conditions[:child]) } if conditions[:child]
-   
+
       # test ancestors
       if conditions[:ancestor]
         return false unless catch :found do
@@ -457,13 +451,13 @@ module HTML #:nodoc:
           child.match(:descendant => conditions[:descendant])
         end
       end
-      
+
       # count children
       if opts = conditions[:children]
         matches = children.select do |c|
           (c.kind_of?(HTML::Tag) and (c.closing == :self or ! c.childless?))
         end
-        
+
         matches = matches.select { |c| c.match(opts[:only]) } if opts[:only]
         opts.each do |key, value|
           next if key == :only
@@ -489,24 +483,24 @@ module HTML #:nodoc:
         self_index = siblings.index(self)
 
         if conditions[:sibling]
-          return false unless siblings.detect do |s| 
+          return false unless siblings.detect do |s|
             s != self && s.match(conditions[:sibling])
           end
         end
 
         if conditions[:before]
-          return false unless siblings[self_index+1..-1].detect do |s| 
+          return false unless siblings[self_index+1..-1].detect do |s|
             s != self && s.match(conditions[:before])
           end
         end
 
         if conditions[:after]
-          return false unless siblings[0,self_index].detect do |s| 
+          return false unless siblings[0,self_index].detect do |s|
             s != self && s.match(conditions[:after])
           end
         end
       end
-  
+
       true
     end
 
@@ -515,7 +509,7 @@ module HTML #:nodoc:
       return false unless closing == node.closing && self.name == node.name
       attributes == node.attributes
     end
-    
+
     private
       # Match the given value to the given condition.
       def match_condition(value, condition)
diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
index 51e0868995..09dd08898c 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
@@ -1,5 +1,5 @@
 require 'set'
-require 'active_support/core_ext/class/inheritable_attributes'
+require 'active_support/core_ext/class/attribute'
 
 module HTML
   class Sanitizer
@@ -7,11 +7,11 @@ module HTML
       return text unless sanitizeable?(text)
       tokenize(text, options).join
     end
-    
+
     def sanitizeable?(text)
       !(text.nil? || text.empty? || !text.index("<"))
     end
-    
+
   protected
     def tokenize(text, options)
       tokenizer = HTML::Tokenizer.new(text)
@@ -22,12 +22,12 @@ module HTML
       end
       result
     end
-    
+
     def process_node(node, result, options)
       result << node.to_s
     end
   end
-  
+
   class FullSanitizer < Sanitizer
     def sanitize(text, options = {})
       result = super
@@ -37,12 +37,12 @@ module HTML
       # Recurse - handle all dirty nested tags
       result == text ? result : sanitize(result, options)
     end
-    
+
     def process_node(node, result, options)
       result << node.to_s if node.class == HTML::Text
     end
   end
-  
+
   class LinkSanitizer < FullSanitizer
     cattr_accessor :included_tags, :instance_writer => false
     self.included_tags = Set.new(%w(a href))
@@ -50,51 +50,51 @@ module HTML
     def sanitizeable?(text)
       !(text.nil? || text.empty? || !((text.index("<a") || text.index("<href")) && text.index(">")))
     end
-    
+
   protected
     def process_node(node, result, options)
-      result << node.to_s unless node.is_a?(HTML::Tag) && included_tags.include?(node.name) 
+      result << node.to_s unless node.is_a?(HTML::Tag) && included_tags.include?(node.name)
     end
   end
-  
+
   class WhiteListSanitizer < Sanitizer
     [:protocol_separator, :uri_attributes, :allowed_attributes, :allowed_tags, :allowed_protocols, :bad_tags,
      :allowed_css_properties, :allowed_css_keywords, :shorthand_css_properties].each do |attr|
-      class_inheritable_accessor attr, :instance_writer => false
+      class_attribute attr, :instance_writer => false
     end
 
     # A regular expression of the valid characters used to separate protocols like
     # the ':' in 'http://foo.com'
     self.protocol_separator     = /:|(&#0*58)|(&#x70)|(%|&#37;)3A/
-    
+
     # Specifies a Set of HTML attributes that can have URIs.
     self.uri_attributes         = Set.new(%w(href src cite action longdesc xlink:href lowsrc))
 
     # Specifies a Set of 'bad' tags that the #sanitize helper will remove completely, as opposed
     # to just escaping harmless tags like &lt;font&gt;
     self.bad_tags               = Set.new(%w(script))
-    
+
     # Specifies the default Set of tags that the #sanitize helper will allow unscathed.
-    self.allowed_tags           = Set.new(%w(strong em b i p code pre tt samp kbd var sub 
-      sup dfn cite big small address hr br div span h1 h2 h3 h4 h5 h6 ul ol li dl dt dd abbr 
+    self.allowed_tags           = Set.new(%w(strong em b i p code pre tt samp kbd var sub
+      sup dfn cite big small address hr br div span h1 h2 h3 h4 h5 h6 ul ol li dl dt dd abbr
       acronym a img blockquote del ins))
 
-    # Specifies the default Set of html attributes that the #sanitize helper will leave 
+    # Specifies the default Set of html attributes that the #sanitize helper will leave
     # in the allowed tag.
     self.allowed_attributes     = Set.new(%w(href src width height alt cite datetime title class name xml:lang abbr))
-    
+
     # Specifies the default Set of acceptable css properties that #sanitize and #sanitize_css will accept.
-    self.allowed_protocols      = Set.new(%w(ed2k ftp http https irc mailto news gopher nntp telnet webcal xmpp callto 
+    self.allowed_protocols      = Set.new(%w(ed2k ftp http https irc mailto news gopher nntp telnet webcal xmpp callto
       feed svn urn aim rsync tag ssh sftp rtsp afs))
-    
+
     # Specifies the default Set of acceptable css keywords that #sanitize and #sanitize_css will accept.
-    self.allowed_css_properties = Set.new(%w(azimuth background-color border-bottom-color border-collapse 
-      border-color border-left-color border-right-color border-top-color clear color cursor direction display 
+    self.allowed_css_properties = Set.new(%w(azimuth background-color border-bottom-color border-collapse
+      border-color border-left-color border-right-color border-top-color clear color cursor direction display
       elevation float font font-family font-size font-style font-variant font-weight height letter-spacing line-height
       overflow pause pause-after pause-before pitch pitch-range richness speak speak-header speak-numeral speak-punctuation
       speech-rate stress text-align text-decoration text-indent unicode-bidi vertical-align voice-family volume white-space
       width))
-  
+
     # Specifies the default Set of acceptable css keywords that #sanitize and #sanitize_css will accept.
     self.allowed_css_keywords   = Set.new(%w(auto aqua black block blue bold both bottom brown center
       collapse dashed dotted fuchsia gray green !important italic left lime maroon medium none navy normal
@@ -118,9 +118,9 @@ module HTML
       style.scan(/([-\w]+)\s*:\s*([^:;]*)/) do |prop,val|
         if allowed_css_properties.include?(prop.downcase)
           clean <<  prop + ': ' + val + ';'
-        elsif shorthand_css_properties.include?(prop.split('-')[0].downcase) 
+        elsif shorthand_css_properties.include?(prop.split('-')[0].downcase)
           unless val.split().any? do |keyword|
-            !allowed_css_keywords.include?(keyword) && 
+            !allowed_css_keywords.include?(keyword) &&
               keyword !~ /^(#[0-9a-f]+|rgb\(\d+%?,\d*%?,?\d*%?\)?|\d{0,2}\.?\d{0,2}(cm|em|ex|in|mm|pc|pt|px|%|,|\))?)$/
           end
             clean << prop + ': ' + val + ';'
@@ -146,7 +146,7 @@ module HTML
           else
             options[:parent].unshift node.name
           end
-          
+
           process_attributes_for node, options
 
           options[:tags].include?(node.name) ? node : nil
@@ -154,7 +154,7 @@ module HTML
           bad_tags.include?(options[:parent].first) ? nil : node.to_s.gsub(/</, "&lt;")
       end
     end
-    
+
     def process_attributes_for(node, options)
       return unless node.attributes
       node.attributes.keys.each do |attr_name|
@@ -169,8 +169,8 @@ module HTML
     end
 
     def contains_bad_protocols?(attr_name, value)
-      uri_attributes.include?(attr_name) && 
-      (value =~ /(^[^\/:]*):|(&#0*58)|(&#x70)|(%|&#37;)3A/ && !allowed_protocols.include?(value.split(protocol_separator).first))
+      uri_attributes.include?(attr_name) &&
+      (value =~ /(^[^\/:]*):|(&#0*58)|(&#x70)|(%|&#37;)3A/ && !allowed_protocols.include?(value.split(protocol_separator).first.downcase))
     end
   end
 end
diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb
index e2c49c284f..0fe2e6d1a6 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb
@@ -182,7 +182,7 @@ module HTML
   # not another using <tt>:not</tt>. For example:
   #   p:not(.post)
   # Matches all paragraphs that do not have the class <tt>.post</tt>.
-  #   
+  #
   # === Substitution Values
   #
   # You can use substitution with identifiers, class names and element values.
diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/tokenizer.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/tokenizer.rb
index 240dc1890f..c252e01cf5 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/tokenizer.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/tokenizer.rb
@@ -1,7 +1,7 @@
 require 'strscan'
 
 module HTML #:nodoc:
-  
+
   # A simple HTML tokenizer. It simply breaks a stream of text into tokens, where each
   # token is a string. Each string represents either "text", or an HTML element.
   #
@@ -14,13 +14,13 @@ module HTML #:nodoc:
   #     p token
   #   end
   class Tokenizer #:nodoc:
-    
+
     # The current (byte) position in the text
     attr_reader :position
-    
+
     # The current line number
     attr_reader :line
-    
+
     # Create a new Tokenizer for the given text.
     def initialize(text)
       text.encode! if text.encoding_aware?
@@ -42,7 +42,7 @@ module HTML #:nodoc:
         update_current_line(scan_text)
       end
     end
-  
+
     private
 
       # Treat the text at the current position as a tag, and scan it. Supports
@@ -69,13 +69,13 @@ module HTML #:nodoc:
       def scan_text
         "#{@scanner.getch}#{@scanner.scan(/[^<]*/)}"
       end
-      
+
       # Counts the number of newlines in the text and updates the current line
       # accordingly.
       def update_current_line(text)
         text.scan(/\r?\n/) { @current_line += 1 }
       end
-      
+
       # Skips over quoted strings, so that less-than and greater-than characters
       # within the strings are ignored.
       def consume_quoted_regions
@@ -103,5 +103,5 @@ module HTML #:nodoc:
         text
       end
   end
-  
+
 end
diff --git a/actionpack/lib/action_dispatch.rb b/actionpack/lib/action_dispatch.rb
index aeec934be8..49971fc9f8 100644
--- a/actionpack/lib/action_dispatch.rb
+++ b/actionpack/lib/action_dispatch.rb
@@ -1,5 +1,5 @@
 #--
-# Copyright (c) 2004-2010 David Heinemeier Hansson
+# Copyright (c) 2004-2011 David Heinemeier Hansson
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
@@ -53,6 +53,7 @@ module ActionDispatch
     autoload :Flash
     autoload :Head
     autoload :ParamsParser
+    autoload :Reloader
     autoload :RemoteIp
     autoload :Rescue
     autoload :ShowExceptions
@@ -85,6 +86,7 @@ module ActionDispatch
   autoload_under 'testing' do
     autoload :Assertions
     autoload :Integration
+    autoload :IntegrationTest, 'action_dispatch/testing/integration'
     autoload :PerformanceTest
     autoload :TestProcess
     autoload :TestRequest
diff --git a/actionpack/lib/action_dispatch/http/cache.rb b/actionpack/lib/action_dispatch/http/cache.rb
index e9fdf75cc8..4f4cb96a74 100644
--- a/actionpack/lib/action_dispatch/http/cache.rb
+++ b/actionpack/lib/action_dispatch/http/cache.rb
@@ -39,10 +39,11 @@ module ActionDispatch
       end
 
       module Response
-        attr_reader :cache_control
+        attr_reader :cache_control, :etag
+        alias :etag? :etag
 
         def initialize(*)
-          status, header, body = super
+          super
 
           @cache_control = {}
           @etag = self["ETag"]
@@ -50,8 +51,7 @@ module ActionDispatch
           if cache_control = self["Cache-Control"]
             cache_control.split(/,\s*/).each do |segment|
               first, last = segment.split("=")
-              last ||= true
-              @cache_control[first.to_sym] = last
+              @cache_control[first.to_sym] = last || true
             end
           end
         end
@@ -70,14 +70,6 @@ module ActionDispatch
           headers['Last-Modified'] = utc_time.httpdate
         end
 
-        def etag
-          @etag
-        end
-
-        def etag?
-          @etag
-        end
-
         def etag=(etag)
           key = ActiveSupport::Cache.expand_cache_key(etag)
           @etag = self["ETag"] = %("#{Digest::MD5.hexdigest(key)}")
@@ -88,38 +80,19 @@ module ActionDispatch
         def handle_conditional_get!
           if etag? || last_modified? || !@cache_control.empty?
             set_conditional_cache_control!
-          elsif nonempty_ok_response?
-            self.etag = body
-
-            if request && request.etag_matches?(etag)
-              self.status = 304
-              self.body = []
-            end
-
-            set_conditional_cache_control!
-          else
-            headers["Cache-Control"] = "no-cache"
           end
         end
 
-        def nonempty_ok_response?
-          @status == 200 && string_body?
-        end
-
-        def string_body?
-          !@blank && @body.respond_to?(:all?) && @body.all? { |part| part.is_a?(String) }
-        end
-
         DEFAULT_CACHE_CONTROL = "max-age=0, private, must-revalidate"
 
         def set_conditional_cache_control!
-          control = @cache_control
-
           return if self["Cache-Control"].present?
 
+          control = @cache_control
+
           if control.empty?
             headers["Cache-Control"] = DEFAULT_CACHE_CONTROL
-          elsif @cache_control[:no_cache]
+          elsif control[:no_cache]
             headers["Cache-Control"] = "no-cache"
           else
             extras  = control[:extras]
diff --git a/actionpack/lib/action_dispatch/http/filter_parameters.rb b/actionpack/lib/action_dispatch/http/filter_parameters.rb
index 1ab48ae04d..8dd1af7f3d 100644
--- a/actionpack/lib/action_dispatch/http/filter_parameters.rb
+++ b/actionpack/lib/action_dispatch/http/filter_parameters.rb
@@ -5,10 +5,10 @@ require 'active_support/core_ext/object/duplicable'
 module ActionDispatch
   module Http
     # Allows you to specify sensitive parameters which will be replaced from
-    # the request log by looking in all subhashes of the param hash for keys
-    # to filter. If a block is given, each key and value of the parameter
-    # hash and all subhashes is passed to it, the value or key can be replaced
-    # using String#replace or similar method.
+    # the request log by looking in the query string of the request and all
+    # subhashes of the params hash to filter. If a block is given, each key and
+    # value of the params hash and all subhashes is passed to it, the value
+    # or key can be replaced using String#replace or similar method.
     #
     # Examples:
     #
@@ -38,6 +38,11 @@ module ActionDispatch
         @filtered_env ||= env_filter.filter(@env)
       end
 
+      # Reconstructed a path with all sensitive GET parameters replaced.
+      def filtered_path
+        @filtered_path ||= query_string.empty? ? path : "#{path}?#{filtered_query_string}"
+      end
+
     protected
 
       def parameter_filter
@@ -52,6 +57,14 @@ module ActionDispatch
         @@parameter_filter_for[filters] ||= ParameterFilter.new(filters)
       end
 
+      KV_RE   = '[^&;=]+'
+      PAIR_RE = %r{(#{KV_RE})=(#{KV_RE})}
+      def filtered_query_string
+        query_string.gsub(PAIR_RE) do |_|
+          parameter_filter.filter([[$1, $2]]).first.join("=")
+        end
+      end
+
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/http/mime_negotiation.rb b/actionpack/lib/action_dispatch/http/mime_negotiation.rb
index 4082770b85..68ba1a81b5 100644
--- a/actionpack/lib/action_dispatch/http/mime_negotiation.rb
+++ b/actionpack/lib/action_dispatch/http/mime_negotiation.rb
@@ -32,23 +32,25 @@ module ActionDispatch
         end
       end
 
-      # Returns the Mime type for the \format used in the request.
+      # Returns the MIME type for the \format used in the request.
       #
       #   GET /posts/5.xml   | request.format => Mime::XML
       #   GET /posts/5.xhtml | request.format => Mime::HTML
-      #   GET /posts/5       | request.format => Mime::HTML or MIME::JS, or request.accepts.first depending on the value of <tt>ActionController::Base.use_accept_header</tt>
+      #   GET /posts/5       | request.format => Mime::HTML or MIME::JS, or request.accepts.first
       #
       def format(view_path = [])
         formats.first
       end
 
+      BROWSER_LIKE_ACCEPTS = /,\s*\*\/\*|\*\/\*\s*,/
+
       def formats
         accept = @env['HTTP_ACCEPT']
 
         @env["action_dispatch.request.formats"] ||=
           if parameters[:format]
             Array(Mime[parameters[:format]])
-          elsif xhr? || (accept && accept !~ /,\s*\*\/\*/)
+          elsif xhr? || (accept && accept !~ BROWSER_LIKE_ACCEPTS)
             accepts
           else
             [Mime::HTML]
diff --git a/actionpack/lib/action_dispatch/http/mime_type.rb b/actionpack/lib/action_dispatch/http/mime_type.rb
index c6fc582851..7c9ebe7c7b 100644
--- a/actionpack/lib/action_dispatch/http/mime_type.rb
+++ b/actionpack/lib/action_dispatch/http/mime_type.rb
@@ -80,6 +80,9 @@ module Mime
     end
 
     class << self
+
+      TRAILING_STAR_REGEXP = /(text|application)\/\*/
+
       def lookup(string)
         LOOKUP[string]
       end
@@ -105,15 +108,28 @@ module Mime
 
       def parse(accept_header)
         if accept_header !~ /,/
-          [Mime::Type.lookup(accept_header)]
+          if accept_header =~ TRAILING_STAR_REGEXP
+            parse_data_with_trailing_star($1)
+          else
+            [Mime::Type.lookup(accept_header)]
+          end
         else
           # keep track of creation order to keep the subsequent sort stable
-          list = []
-          accept_header.split(/,/).each_with_index do |header, index| 
-            params, q = header.split(/;\s*q=/)       
-            if params
-              params.strip!          
-              list << AcceptItem.new(index, params, q) unless params.empty?
+          list, index = [], 0
+          accept_header.split(/,/).each do |header|
+            params, q = header.split(/;\s*q=/)
+            if params.present?
+              params.strip!
+
+              if params =~ TRAILING_STAR_REGEXP
+                parse_data_with_trailing_star($1).each do |m|
+                  list << AcceptItem.new(index, m.to_s, q)
+                  index += 1
+                end
+              else
+                list << AcceptItem.new(index, params, q)
+                index += 1
+              end
             end
           end
           list.sort!
@@ -160,23 +176,51 @@ module Mime
           list
         end
       end
+
+      # input: 'text'
+      # returned value:  [Mime::JSON, Mime::XML, Mime::ICS, Mime::HTML, Mime::CSS, Mime::CSV, Mime::JS, Mime::YAML, Mime::TEXT]
+      #
+      # input: 'application'
+      # returned value: [Mime::HTML, Mime::JS, Mime::XML, Mime::YAML, Mime::ATOM, Mime::JSON, Mime::RSS, Mime::URL_ENCODED_FORM]
+      def parse_data_with_trailing_star(input)
+        Mime::SET.select { |m| m =~ input }
+      end
+
+      # This method is opposite of register method.
+      #
+      # Usage:
+      #
+      # Mime::Type.unregister(:mobile)
+      def unregister(symbol)
+        symbol = symbol.to_s.upcase
+        mime = Mime.const_get(symbol)
+        Mime.instance_eval { remove_const(symbol) }
+
+        SET.delete_if { |v| v.eql?(mime) }
+        LOOKUP.delete_if { |k,v| v.eql?(mime) }
+        EXTENSION_LOOKUP.delete_if { |k,v| v.eql?(mime) }
+      end
     end
-    
+
     def initialize(string, symbol = nil, synonyms = [])
       @symbol, @synonyms = symbol, synonyms
       @string = string
     end
-    
+
     def to_s
       @string
     end
-    
+
     def to_str
       to_s
     end
-    
+
     def to_sym
-      @symbol || @string.to_sym
+      @symbol
+    end
+
+    def ref
+      to_sym || to_s
     end
 
     def ===(list)
@@ -186,11 +230,11 @@ module Mime
         super
       end
     end
-    
+
     def ==(mime_type)
       return false if mime_type.blank?
-      (@synonyms + [ self ]).any? do |synonym| 
-        synonym.to_s == mime_type.to_s || synonym.to_sym == mime_type.to_sym 
+      (@synonyms + [ self ]).any? do |synonym|
+        synonym.to_s == mime_type.to_s || synonym.to_sym == mime_type.to_sym
       end
     end
 
diff --git a/actionpack/lib/action_dispatch/http/parameters.rb b/actionpack/lib/action_dispatch/http/parameters.rb
index add8cab2ab..ef5d207b26 100644
--- a/actionpack/lib/action_dispatch/http/parameters.rb
+++ b/actionpack/lib/action_dispatch/http/parameters.rb
@@ -15,14 +15,14 @@ module ActionDispatch
       alias :params :parameters
 
       def path_parameters=(parameters) #:nodoc:
-        @env.delete("action_dispatch.request.symbolized_path_parameters")
+        @symbolized_path_params = nil
         @env.delete("action_dispatch.request.parameters")
         @env["action_dispatch.request.path_parameters"] = parameters
       end
 
       # The same as <tt>path_parameters</tt> with explicitly symbolized keys.
       def symbolized_path_parameters
-        @env["action_dispatch.request.symbolized_path_parameters"] ||= path_parameters.symbolize_keys
+        @symbolized_path_params ||= path_parameters.symbolize_keys
       end
 
       # Returns a hash with the \parameters used to form the \path of the request.
diff --git a/actionpack/lib/action_dispatch/http/rack_cache.rb b/actionpack/lib/action_dispatch/http/rack_cache.rb
new file mode 100644
index 0000000000..b5c1435903
--- /dev/null
+++ b/actionpack/lib/action_dispatch/http/rack_cache.rb
@@ -0,0 +1,58 @@
+require "rack/cache"
+require "rack/cache/context"
+require "active_support/cache"
+
+module ActionDispatch
+  class RailsMetaStore < Rack::Cache::MetaStore
+    def self.resolve(uri)
+      new
+    end
+
+    # TODO: Finally deal with the RAILS_CACHE global
+    def initialize(store = RAILS_CACHE)
+      @store = store
+    end
+
+    def read(key)
+      @store.read(key) || []
+    end
+
+    def write(key, value)
+      @store.write(key, value)
+    end
+
+    ::Rack::Cache::MetaStore::RAILS = self
+  end
+
+  class RailsEntityStore < Rack::Cache::EntityStore
+    def self.resolve(uri)
+      new
+    end
+
+    def initialize(store = RAILS_CACHE)
+      @store = store
+    end
+
+    def exist?(key)
+      @store.exist?(key)
+    end
+
+    def open(key)
+      @store.read(key)
+    end
+
+    def read(key)
+      body = open(key)
+      body.join if body
+    end
+
+    def write(body)
+      buf = []
+      key, size = slurp(body) { |part| buf << part }
+      @store.write(key, buf)
+      [key, size]
+    end
+
+    ::Rack::Cache::EntityStore::RAILS = self
+  end
+end
diff --git a/actionpack/lib/action_dispatch/http/request.rb b/actionpack/lib/action_dispatch/http/request.rb
index fd23b1df79..f07ac44f7a 100644
--- a/actionpack/lib/action_dispatch/http/request.rb
+++ b/actionpack/lib/action_dispatch/http/request.rb
@@ -2,8 +2,10 @@ require 'tempfile'
 require 'stringio'
 require 'strscan'
 
+require 'active_support/core_ext/module/deprecation'
 require 'active_support/core_ext/hash/indifferent_access'
 require 'active_support/core_ext/string/access'
+require 'active_support/inflector'
 require 'action_dispatch/http/headers'
 
 module ActionDispatch
@@ -15,6 +17,8 @@ module ActionDispatch
     include ActionDispatch::Http::Upload
     include ActionDispatch::Http::URL
 
+    LOCALHOST = [/^127\.0\.0\.\d{1,3}$/, "::1", /^0:0:0:0:0:0:0:1(%.*)?$/].freeze
+
     %w[ AUTH_TYPE GATEWAY_INTERFACE
         PATH_TRANSLATED REMOTE_HOST
         REMOTE_IDENT REMOTE_USER REMOTE_ADDR
@@ -42,8 +46,24 @@ module ActionDispatch
       @env.key?(key)
     end
 
-    HTTP_METHODS = %w(get head put post delete options)
-    HTTP_METHOD_LOOKUP = HTTP_METHODS.inject({}) { |h, m| h[m] = h[m.upcase] = m.to_sym; h }
+    # List of HTTP request methods from the following RFCs:
+    # Hypertext Transfer Protocol -- HTTP/1.1 (http://www.ietf.org/rfc/rfc2616.txt)
+    # HTTP Extensions for Distributed Authoring -- WEBDAV (http://www.ietf.org/rfc/rfc2518.txt)
+    # Versioning Extensions to WebDAV (http://www.ietf.org/rfc/rfc3253.txt)
+    # Ordered Collections Protocol (WebDAV) (http://www.ietf.org/rfc/rfc3648.txt)
+    # Web Distributed Authoring and Versioning (WebDAV) Access Control Protocol (http://www.ietf.org/rfc/rfc3744.txt)
+    # Web Distributed Authoring and Versioning (WebDAV) SEARCH (http://www.ietf.org/rfc/rfc5323.txt)
+    # PATCH Method for HTTP (http://www.ietf.org/rfc/rfc5789.txt)
+    RFC2616 = %w(OPTIONS GET HEAD POST PUT DELETE TRACE CONNECT)
+    RFC2518 = %w(PROPFIND PROPPATCH MKCOL COPY MOVE LOCK UNLOCK)
+    RFC3253 = %w(VERSION-CONTROL REPORT CHECKOUT CHECKIN UNCHECKOUT MKWORKSPACE UPDATE LABEL MERGE BASELINE-CONTROL MKACTIVITY)
+    RFC3648 = %w(ORDERPATCH)
+    RFC3744 = %w(ACL)
+    RFC5323 = %w(SEARCH)
+    RFC5789 = %w(PATCH)
+
+    HTTP_METHODS = RFC2616 + RFC2518 + RFC3253 + RFC3648 + RFC3744 + RFC5323 + RFC5789
+    HTTP_METHOD_LOOKUP = Hash.new { |h, m| h[m] = m.underscore.to_sym if HTTP_METHODS.include?(m) }
 
     # Returns the HTTP \method that the application should see.
     # In the case where the \method was overridden by a middleware
@@ -52,11 +72,7 @@ module ActionDispatch
     # the application should use), this \method returns the overridden
     # value, not the original.
     def request_method
-      @request_method ||= begin
-        method = env["REQUEST_METHOD"]
-        HTTP_METHOD_LOOKUP[method] || raise(ActionController::UnknownHttpMethod, "#{method}, accepted HTTP methods are #{HTTP_METHODS.to_sentence(:locale => :en)}")
-        method
-      end
+      @request_method ||= check_method(env["REQUEST_METHOD"])
     end
 
     # Returns a symbol form of the #request_method
@@ -68,11 +84,7 @@ module ActionDispatch
     # even if it was overridden by middleware. See #request_method for
     # more information.
     def method
-      @method ||= begin
-        method = env["rack.methodoverride.original_method"] || env['REQUEST_METHOD']
-        HTTP_METHOD_LOOKUP[method] || raise(ActionController::UnknownHttpMethod, "#{method}, accepted HTTP methods are #{HTTP_METHODS.to_sentence(:locale => :en)}")
-        method
-      end
+      @method ||= check_method(env["rack.methodoverride.original_method"] || env['REQUEST_METHOD'])
     end
 
     # Returns a symbol form of the #method
@@ -122,8 +134,9 @@ module ActionDispatch
     end
 
     def forgery_whitelisted?
-      get? || xhr? || content_mime_type.nil? || !content_mime_type.verify_request?
+      get?
     end
+    deprecate :forgery_whitelisted? => "it is just an alias for 'get?' now, update your code"
 
     def media_type
       content_mime_type.to_s
@@ -134,11 +147,11 @@ module ActionDispatch
       super.to_i
     end
 
-    # Returns true if the request's "X-Requested-With" header contains
-    # "XMLHttpRequest". (The Prototype Javascript library sends this header with
-    # every Ajax request.)
+    # Returns true if the "X-Requested-With" header contains "XMLHttpRequest"
+    # (case-insensitive). All major JavaScript libraries send this header with
+    # every Ajax request.
     def xml_http_request?
-      !(@env['HTTP_X_REQUESTED_WITH'] !~ /XMLHttpRequest/i)
+      @env['HTTP_X_REQUESTED_WITH'] =~ /XMLHttpRequest/i
     end
     alias :xhr? :xml_http_request?
 
@@ -147,8 +160,16 @@ module ActionDispatch
     end
 
     # Which IP addresses are "trusted proxies" that can be stripped from
-    # the right-hand-side of X-Forwarded-For
-    TRUSTED_PROXIES = /^127\.0\.0\.1$|^(10|172\.(1[6-9]|2[0-9]|30|31)|192\.168)\./i
+    # the right-hand-side of X-Forwarded-For.
+    #
+    # http://en.wikipedia.org/wiki/Private_network#Private_IPv4_address_spaces.
+    TRUSTED_PROXIES = %r{
+      ^127\.0\.0\.1$                | # localhost
+      ^(10                          | # private IP 10.x.x.x
+        172\.(1[6-9]|2[0-9]|3[0-1]) | # private IP in the range 172.16.0.0 .. 172.31.255.255
+        192\.168                      # private IP 192.168.x.x
+       )\.
+    }x
 
     # Determines originating IP address.  REMOTE_ADDR is the standard
     # but will fail if the user is behind a proxy.  HTTP_CLIENT_IP and/or
@@ -197,7 +218,7 @@ module ActionDispatch
     # TODO This should be broken apart into AD::Request::Session and probably
     # be included by the session middleware.
     def reset_session
-      session.destroy if session
+      session.destroy if session && session.respond_to?(:destroy)
       self.session = {}
       @env['action_dispatch.request.flash_hash'] = nil
     end
@@ -212,13 +233,13 @@ module ActionDispatch
 
     # Override Rack's GET method to support indifferent access
     def GET
-      @env["action_dispatch.request.query_parameters"] ||= normalize_parameters(super)
+      @env["action_dispatch.request.query_parameters"] ||= (normalize_parameters(super) || {})
     end
     alias :query_parameters :GET
 
     # Override Rack's POST method to support indifferent access
     def POST
-      @env["action_dispatch.request.request_parameters"] ||= normalize_parameters(super)
+      @env["action_dispatch.request.request_parameters"] ||= (normalize_parameters(super) || {})
     end
     alias :request_parameters :POST
 
@@ -231,5 +252,17 @@ module ActionDispatch
       @env['X_HTTP_AUTHORIZATION'] ||
       @env['REDIRECT_X_HTTP_AUTHORIZATION']
     end
+
+    # True if the request came from localhost, 127.0.0.1.
+    def local?
+      LOCALHOST.any? { |local_ip| local_ip === remote_addr && local_ip === remote_ip }
+    end
+
+    private
+
+    def check_method(name)
+      HTTP_METHOD_LOOKUP[name] || raise(ActionController::UnknownHttpMethod, "#{name}, accepted HTTP methods are #{HTTP_METHODS.to_sentence(:locale => :en)}")
+      name
+    end
   end
 end
diff --git a/actionpack/lib/action_dispatch/http/response.rb b/actionpack/lib/action_dispatch/http/response.rb
index 3b85a98576..8e03a7879f 100644
--- a/actionpack/lib/action_dispatch/http/response.rb
+++ b/actionpack/lib/action_dispatch/http/response.rb
@@ -4,27 +4,26 @@ require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/class/attribute_accessors'
 
 module ActionDispatch # :nodoc:
-  # Represents an HTTP response generated by a controller action. One can use
-  # an ActionDispatch::Response object to retrieve the current state
-  # of the response, or customize the response. An Response object can
-  # either represent a "real" HTTP response (i.e. one that is meant to be sent
-  # back to the web browser) or a test response (i.e. one that is generated
-  # from integration tests). See CgiResponse and TestResponse, respectively.
+  # Represents an HTTP response generated by a controller action. Use it to
+  # retrieve the current state of the response, or customize the response. It can
+  # either represent a real HTTP response (i.e. one that is meant to be sent
+  # back to the web browser) or a TestResponse (i.e. one that is generated
+  # from integration tests).
   #
-  # Response is mostly a Ruby on Rails framework implement detail, and
+  # \Response is mostly a Ruby on \Rails framework implementation detail, and
   # should never be used directly in controllers. Controllers should use the
   # methods defined in ActionController::Base instead. For example, if you want
   # to set the HTTP response's content MIME type, then use
   # ActionControllerBase#headers instead of Response#headers.
   #
   # Nevertheless, integration tests may want to inspect controller responses in
-  # more detail, and that's when Response can be useful for application
+  # more detail, and that's when \Response can be useful for application
   # developers. Integration test methods such as
   # ActionDispatch::Integration::Session#get and
   # ActionDispatch::Integration::Session#post return objects of type
-  # TestResponse (which are of course also of type Response).
+  # TestResponse (which are of course also of type \Response).
   #
-  # For example, the following demo integration "test" prints the body of the
+  # For example, the following demo integration test prints the body of the
   # controller response to the console:
   #
   #  class DemoControllerTest < ActionDispatch::IntegrationTest
@@ -45,8 +44,8 @@ module ActionDispatch # :nodoc:
         @block = nil
         @length = 0
 
-        @status, @header = status, header
-        self.body = body
+        @header = header
+        self.body, self.status = body, status
 
         @cookie = []
         @sending_file = false
@@ -133,7 +132,7 @@ module ActionDispatch # :nodoc:
     # information.
     attr_accessor :charset, :content_type
 
-    CONTENT_TYPE    = "Content-Type"
+    CONTENT_TYPE = "Content-Type"
 
     cattr_accessor(:default_charset) { "utf-8" }
 
@@ -141,7 +140,6 @@ module ActionDispatch # :nodoc:
       assign_default_content_type_and_charset!
       handle_conditional_get!
       self["Set-Cookie"] = self["Set-Cookie"].join("\n") if self["Set-Cookie"].respond_to?(:join)
-      self["ETag"]       = @_etag if @_etag
       super
     end
 
diff --git a/actionpack/lib/action_dispatch/http/upload.rb b/actionpack/lib/action_dispatch/http/upload.rb
index 8ee4b81cdd..37effade4f 100644
--- a/actionpack/lib/action_dispatch/http/upload.rb
+++ b/actionpack/lib/action_dispatch/http/upload.rb
@@ -1,32 +1,34 @@
-require 'active_support/core_ext/object/blank'
-
 module ActionDispatch
   module Http
-    module UploadedFile
-      def self.extended(object)
-        object.class_eval do
-          attr_accessor :original_path, :content_type
-          alias_method :local_path, :path if method_defined?(:path)
-        end
+    class UploadedFile
+      attr_accessor :original_filename, :content_type, :tempfile, :headers
+
+      def initialize(hash)
+        @original_filename = hash[:filename]
+        @content_type      = hash[:type]
+        @headers           = hash[:head]
+        @tempfile          = hash[:tempfile]
+        raise(ArgumentError, ':tempfile is required') unless @tempfile
       end
 
-      # Take the basename of the upload's original filename.
-      # This handles the full Windows paths given by Internet Explorer
-      # (and perhaps other broken user agents) without affecting
-      # those which give the lone filename.
-      # The Windows regexp is adapted from Perl's File::Basename.
-      def original_filename
-        unless defined? @original_filename
-          @original_filename =
-            unless original_path.blank?
-              if original_path =~ /^(?:.*[:\\\/])?(.*)/m
-                $1
-              else
-                File.basename original_path
-              end
-            end
-        end
-        @original_filename
+      def open
+        @tempfile.open
+      end
+
+      def path
+        @tempfile.path
+      end
+
+      def read(*args)
+        @tempfile.read(*args)
+      end
+
+      def rewind
+        @tempfile.rewind
+      end
+
+      def size
+        @tempfile.size
       end
     end
 
@@ -35,11 +37,7 @@ module ActionDispatch
       # file upload hash with UploadedFile objects
       def normalize_parameters(value)
         if Hash === value && value.has_key?(:tempfile)
-          upload = value[:tempfile]
-          upload.extend(UploadedFile)
-          upload.original_path = value[:filename]
-          upload.content_type = value[:type]
-          upload
+          UploadedFile.new(value)
         else
           super
         end
@@ -47,4 +45,4 @@ module ActionDispatch
       private :normalize_parameters
     end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_dispatch/http/url.rb b/actionpack/lib/action_dispatch/http/url.rb
index b64a83c62e..ac0fd9607d 100644
--- a/actionpack/lib/action_dispatch/http/url.rb
+++ b/actionpack/lib/action_dispatch/http/url.rb
@@ -1,6 +1,81 @@
 module ActionDispatch
   module Http
     module URL
+      mattr_accessor :tld_length
+      self.tld_length = 1
+
+      class << self
+        def extract_domain(host, tld_length = @@tld_length)
+          return nil unless named_host?(host)
+          host.split('.').last(1 + tld_length).join('.')
+        end
+
+        def extract_subdomains(host, tld_length = @@tld_length)
+          return [] unless named_host?(host)
+          parts = host.split('.')
+          parts[0..-(tld_length+2)]
+        end
+
+        def extract_subdomain(host, tld_length = @@tld_length)
+          extract_subdomains(host, tld_length).join('.')
+        end
+
+        def url_for(options = {})
+          unless options[:host].present? || options[:only_path].present?
+            raise ArgumentError, 'Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true'
+          end
+
+          rewritten_url = ""
+
+          unless options[:only_path]
+            unless options[:protocol] == false
+              rewritten_url << (options[:protocol] || "http")
+              rewritten_url << ":" unless rewritten_url.match(%r{:|//})
+            end
+            rewritten_url << "//" unless rewritten_url.match("//")
+            rewritten_url << rewrite_authentication(options)
+            rewritten_url << host_or_subdomain_and_domain(options)
+            rewritten_url << ":#{options.delete(:port)}" if options[:port]
+          end
+
+          path = options.delete(:path) || ''
+
+          params = options[:params] || {}
+          params.reject! {|k,v| v.to_param.nil? }
+
+          rewritten_url << (options[:trailing_slash] ? path.sub(/\?|\z/) { "/" + $& } : path)
+          rewritten_url << "?#{params.to_query}" unless params.empty?
+          rewritten_url << "##{Rack::Mount::Utils.escape_uri(options[:anchor].to_param.to_s)}" if options[:anchor]
+          rewritten_url
+        end
+
+        private
+
+        def named_host?(host)
+          !(host.nil? || /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.match(host))
+        end
+
+        def rewrite_authentication(options)
+          if options[:user] && options[:password]
+            "#{Rack::Utils.escape(options[:user])}:#{Rack::Utils.escape(options[:password])}@"
+          else
+            ""
+          end
+        end
+
+        def host_or_subdomain_and_domain(options)
+          return options[:host] unless options[:subdomain] || options[:domain]
+
+          tld_length = options[:tld_length] || @@tld_length
+
+          host = ""
+          host << (options[:subdomain] || extract_subdomain(options[:host], tld_length))
+          host << "."
+          host << (options[:domain]    || extract_domain(options[:host], tld_length))
+          host
+        end
+      end
+
       # Returns the complete URL used for this request.
       def url
         protocol + host_with_port + fullpath
@@ -8,12 +83,7 @@ module ActionDispatch
 
       # Returns 'https://' if this is an SSL request and 'http://' otherwise.
       def protocol
-        ssl? ? 'https://' : 'http://'
-      end
-
-      # Is this an SSL request?
-      def ssl?
-        @env['HTTPS'] == 'on' || @env['HTTP_X_FORWARDED_PROTO'] == 'https'
+        @protocol ||= ssl? ? 'https://' : 'http://'
       end
 
       # Returns the \host for this request, such as "example.com".
@@ -38,10 +108,12 @@ module ActionDispatch
 
       # Returns the port number of this request as an integer.
       def port
-        if raw_host_with_port =~ /:(\d+)$/
-          $1.to_i
-        else
-          standard_port
+        @port ||= begin
+          if raw_host_with_port =~ /:(\d+)$/
+            $1.to_i
+          else
+            standard_port
+          end
         end
       end
 
@@ -53,10 +125,21 @@ module ActionDispatch
         end
       end
 
-      # Returns a \port suffix like ":8080" if the \port number of this request
+      # Returns whether this request is using the standard port
+      def standard_port?
+        port == standard_port
+      end
+
+      # Returns a number \port suffix like 8080 if the \port number of this request
       # is not the default HTTP \port 80 or HTTPS \port 443.
+      def optional_port
+        standard_port? ? nil : port
+      end
+
+      # Returns a string \port suffix, including colon, like ":8080" if the \port
+      # number of this request is not the default HTTP \port 80 or HTTPS \port 443.
       def port_string
-        port == standard_port ? '' : ":#{port}"
+        standard_port? ? '' : ":#{port}"
       end
 
       def server_port
@@ -65,38 +148,25 @@ module ActionDispatch
 
       # Returns the \domain part of a \host, such as "rubyonrails.org" in "www.rubyonrails.org". You can specify
       # a different <tt>tld_length</tt>, such as 2 to catch rubyonrails.co.uk in "www.rubyonrails.co.uk".
-      def domain(tld_length = 1)
-        return nil unless named_host?(host)
-
-        host.split('.').last(1 + tld_length).join('.')
+      def domain(tld_length = @@tld_length)
+        ActionDispatch::Http::URL.extract_domain(host, tld_length)
       end
 
       # Returns all the \subdomains as an array, so <tt>["dev", "www"]</tt> would be
       # returned for "dev.www.rubyonrails.org". You can specify a different <tt>tld_length</tt>,
       # such as 2 to catch <tt>["www"]</tt> instead of <tt>["www", "rubyonrails"]</tt>
       # in "www.rubyonrails.co.uk".
-      def subdomains(tld_length = 1)
-        return [] unless named_host?(host)
-        parts = host.split('.')
-        parts[0..-(tld_length+2)]
-      end
-
-      def subdomain(tld_length = 1)
-        subdomains(tld_length).join('.')
-      end
-
-      # Returns the request URI, accounting for server idiosyncrasies.
-      # WEBrick includes the full URL. IIS leaves REQUEST_URI blank.
-      def request_uri
-        ActiveSupport::Deprecation.warn "Using #request_uri is deprecated. Use fullpath instead.", caller
-        fullpath
+      def subdomains(tld_length = @@tld_length)
+        ActionDispatch::Http::URL.extract_subdomains(host, tld_length)
       end
 
-    private
-
-      def named_host?(host)
-        !(host.nil? || /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.match(host))
+      # Returns all the \subdomains as a string, so <tt>"dev.www"</tt> would be
+      # returned for "dev.www.rubyonrails.org". You can specify a different <tt>tld_length</tt>,
+      # such as 2 to catch <tt>["www"]</tt> instead of <tt>"www.rubyonrails"</tt>
+      # in "www.rubyonrails.co.uk".
+      def subdomain(tld_length = @@tld_length)
+        subdomains(tld_length)
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_dispatch/middleware/callbacks.rb b/actionpack/lib/action_dispatch/middleware/callbacks.rb
index e4ae480bfb..1bb2ad7f67 100644
--- a/actionpack/lib/action_dispatch/middleware/callbacks.rb
+++ b/actionpack/lib/action_dispatch/middleware/callbacks.rb
@@ -1,30 +1,14 @@
+require 'active_support/core_ext/module/delegation'
+
 module ActionDispatch
   # Provide callbacks to be executed before and after the request dispatch.
-  #
-  # It also provides a to_prepare callback, which is performed in all requests
-  # in development by only once in production and notification callback for async
-  # operations.
-  #
   class Callbacks
     include ActiveSupport::Callbacks
 
     define_callbacks :call, :rescuable => true
-    define_callbacks :prepare, :scope => :name
 
-    # Add a preparation callback. Preparation callbacks are run before every
-    # request in development mode, and before the first request in production mode.
-    #
-    # If a symbol with a block is given, the symbol is used as an identifier.
-    # That allows to_prepare to be called again with the same identifier to
-    # replace the existing callback. Passing an identifier is a suggested
-    # practice if the code adding a preparation block may be reloaded.
-    def self.to_prepare(*args, &block)
-      if args.first.is_a?(Symbol) && block_given?
-        define_method :"__#{args.first}", &block
-        set_callback(:prepare, :"__#{args.first}")
-      else
-        set_callback(:prepare, *args, &block)
-      end
+    class << self
+      delegate :to_prepare, :to_cleanup, :to => "ActionDispatch::Reloader"
     end
 
     def self.before(*args, &block)
@@ -35,14 +19,13 @@ module ActionDispatch
       set_callback(:call, :after, *args, &block)
     end
 
-    def initialize(app, prepare_each_request = false)
-      @app, @prepare_each_request = app, prepare_each_request
-      _run_prepare_callbacks
+    def initialize(app, unused = nil)
+      ActiveSupport::Deprecation.warn "Passing a second argument to ActionDispatch::Callbacks.new is deprecated." unless unused.nil?
+      @app = app
     end
 
     def call(env)
-      _run_call_callbacks do
-        _run_prepare_callbacks if @prepare_each_request
+      run_callbacks :call do
         @app.call(env)
       end
     end
diff --git a/actionpack/lib/action_dispatch/middleware/cookies.rb b/actionpack/lib/action_dispatch/middleware/cookies.rb
index 4d33cd3b0c..7ac608f0a8 100644
--- a/actionpack/lib/action_dispatch/middleware/cookies.rb
+++ b/actionpack/lib/action_dispatch/middleware/cookies.rb
@@ -7,7 +7,7 @@ module ActionDispatch
     end
   end
 
-  # Cookies are read and written through ActionController#cookies.
+  # \Cookies are read and written through ActionController#cookies.
   #
   # The cookies being read are the ones received along with the request, the cookies
   # being written will be sent out with the response. Reading a cookie does not get
@@ -16,15 +16,31 @@ module ActionDispatch
   # Examples for writing:
   #
   #   # Sets a simple session cookie.
+  #   # This cookie will be deleted when the user's browser is closed.
   #   cookies[:user_name] = "david"
   #
+  #   # Assign an array of values to a cookie.
+  #   cookies[:lat_lon] = [47.68, -122.37]
+  #
   #   # Sets a cookie that expires in 1 hour.
   #   cookies[:login] = { :value => "XJ-122", :expires => 1.hour.from_now }
   #
+  #   # Sets a signed cookie, which prevents a user from tampering with its value.
+  #   # The cookie is signed by your app's <tt>config.secret_token</tt> value.
+  #   # Rails generates this value by default when you create a new Rails app.
+  #   cookies.signed[:user_id] = current_user.id
+  #
+  #   # Sets a "permanent" cookie (which expires in 20 years from now).
+  #   cookies.permanent[:login] = "XJ-122"
+  #
+  #   # You can also chain these methods:
+  #   cookies.permanent.signed[:login] = "XJ-122"
+  #
   # Examples for reading:
   #
   #   cookies[:user_name] # => "david"
   #   cookies.size        # => 2
+  #   cookies[:lat_lon]   # => [47.68, -122.37]
   #
   # Example for deleting:
   #
@@ -55,7 +71,7 @@ module ActionDispatch
   #     :domain => :all # Allow the cookie for the top most level
   #                       domain and subdomains.
   #
-  # * <tt>:expires</tt> - The time at which this cookie expires, as a Time object.
+  # * <tt>:expires</tt> - The time at which this cookie expires, as a \Time object.
   # * <tt>:secure</tt> - Whether this cookie is a only transmitted to HTTPS servers.
   #   Default is +false+.
   # * <tt>:httponly</tt> - Whether this cookie is accessible via scripting or
@@ -69,27 +85,36 @@ module ActionDispatch
 
     class CookieJar < Hash #:nodoc:
 
-      # This regular expression is used to split the levels of a domain
-      # So www.example.co.uk gives:
-      # $1 => www.
-      # $2 => example
-      # $3 => co.uk
-      DOMAIN_REGEXP = /^(.*\.)*(.*)\.(...|...\...|....|..\...|..)$/
+      # This regular expression is used to split the levels of a domain.
+      # The top level domain can be any string without a period or
+      # **.**, ***.** style TLDs like co.uk or com.au
+      #
+      # www.example.co.uk gives:
+      # $& => example.co.uk
+      #
+      # example.com gives:
+      # $& => example.com
+      #
+      # lots.of.subdomains.example.local gives:
+      # $& => example.local
+      DOMAIN_REGEXP = /[^.]*\.([^.]*|..\...|...\...)$/
 
       def self.build(request)
         secret = request.env[TOKEN_KEY]
-        host = request.env["HTTP_HOST"]
+        host = request.host
+        secure = request.ssl?
 
-        new(secret, host).tap do |hash|
+        new(secret, host, secure).tap do |hash|
           hash.update(request.cookies)
         end
       end
 
-      def initialize(secret = nil, host = nil)
+      def initialize(secret = nil, host = nil, secure = false)
         @secret = secret
         @set_cookies = {}
         @delete_cookies = {}
         @host = host
+        @secure = secure
 
         super()
       end
@@ -103,8 +128,17 @@ module ActionDispatch
         options[:path] ||= "/"
 
         if options[:domain] == :all
-          @host =~ DOMAIN_REGEXP
-          options[:domain] = ".#{$2}.#{$3}"
+          # if there is a provided tld length then we use it otherwise default domain regexp
+          domain_regexp = options[:tld_length] ? /([^.]+\.?){#{options[:tld_length]}}$/ : DOMAIN_REGEXP
+
+          # if host is not ip and matches domain regexp
+          # (ip confirms to domain regexp so we explicitly check for ip)
+          options[:domain] = if (@host !~ /^[\d.]+$/) && (@host =~ domain_regexp)
+            ".#{$&}"
+          end
+        elsif options[:domain].is_a? Array
+          # if host matches one of the supplied domains without a dot in front of it
+          options[:domain] = options[:domain].find {|domain| @host.include? domain[/^\.?(.*)$/, 1] }
         end
       end
 
@@ -174,9 +208,15 @@ module ActionDispatch
       end
 
       def write(headers)
-        @set_cookies.each { |k, v| ::Rack::Utils.set_cookie_header!(headers, k, v) }
+        @set_cookies.each { |k, v| ::Rack::Utils.set_cookie_header!(headers, k, v) if write_cookie?(v) }
         @delete_cookies.each { |k, v| ::Rack::Utils.delete_cookie_header!(headers, k, v) }
       end
+
+      private
+
+        def write_cookie?(cookie)
+          @secure || !cookie[:secure] || defined?(Rails.env) && Rails.env.development?
+        end
     end
 
     class PermanentCookieJar < CookieJar #:nodoc:
@@ -248,7 +288,7 @@ module ActionDispatch
             "integrity hash for cookie session data. Use " +
             "config.secret_token = \"some secret phrase of at " +
             "least #{SECRET_MIN_LENGTH} characters\"" +
-            "in config/application.rb"
+            "in config/initializers/secret_token.rb"
         end
 
         if secret.length < SECRET_MIN_LENGTH
diff --git a/actionpack/lib/action_dispatch/middleware/flash.rb b/actionpack/lib/action_dispatch/middleware/flash.rb
index bfa30cf5af..21aeeb217a 100644
--- a/actionpack/lib/action_dispatch/middleware/flash.rb
+++ b/actionpack/lib/action_dispatch/middleware/flash.rb
@@ -10,13 +10,13 @@ module ActionDispatch
 
   # The flash provides a way to pass temporary objects between actions. Anything you place in the flash will be exposed
   # to the very next action and then cleared out. This is a great way of doing notices and alerts, such as a create
-  # action that sets <tt>flash[:notice] = "Successfully created"</tt> before redirecting to a display action that can
+  # action that sets <tt>flash[:notice] = "Post successfully created"</tt> before redirecting to a display action that can
   # then expose the flash to its template. Actually, that exposure is automatically done. Example:
   #
   #   class PostsController < ActionController::Base
   #     def create
   #       # save post
-  #       flash[:notice] = "Successfully created post"
+  #       flash[:notice] = "Post successfully created"
   #       redirect_to posts_path(@post)
   #     end
   #
@@ -30,6 +30,11 @@ module ActionDispatch
   #       <div class="notice"><%= flash[:notice] %></div>
   #     <% end %>
   #
+  # Since the +notice+ and +alert+ keys are a common idiom, convenience accessors are available:
+  #
+  #   flash.alert = "You must be logged in"
+  #   flash.notice = "Post successfully created"
+  #
   # This example just places a string in the flash, but you can put any object in there. And of course, you can put as
   # many as you like at a time too. Just remember: They'll be gone by the time the next action has been performed.
   #
diff --git a/actionpack/lib/action_dispatch/middleware/reloader.rb b/actionpack/lib/action_dispatch/middleware/reloader.rb
new file mode 100644
index 0000000000..29289a76b4
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/reloader.rb
@@ -0,0 +1,76 @@
+module ActionDispatch
+  # ActionDispatch::Reloader provides prepare and cleanup callbacks,
+  # intended to assist with code reloading during development.
+  #
+  # Prepare callbacks are run before each request, and cleanup callbacks
+  # after each request. In this respect they are analogs of ActionDispatch::Callback's
+  # before and after callbacks. However, cleanup callbacks are not called until the
+  # request is fully complete -- that is, after #close has been called on
+  # the response body. This is important for streaming responses such as the
+  # following:
+  #
+  #     self.response_body = lambda { |response, output|
+  #       # code here which refers to application models
+  #     }
+  #
+  # Cleanup callbacks will not be called until after the response_body lambda
+  # is evaluated, ensuring that it can refer to application models and other
+  # classes before they are unloaded.
+  #
+  # By default, ActionDispatch::Reloader is included in the middleware stack
+  # only in the development environment; specifically, when config.cache_classes
+  # is false. Callbacks may be registered even when it is not included in the
+  # middleware stack, but are executed only when +ActionDispatch::Reloader.prepare!+
+  # or +ActionDispatch::Reloader.cleanup!+ are called manually.
+  #
+  class Reloader
+    include ActiveSupport::Callbacks
+
+    define_callbacks :prepare, :scope => :name
+    define_callbacks :cleanup, :scope => :name
+
+    # Add a prepare callback. Prepare callbacks are run before each request, prior
+    # to ActionDispatch::Callback's before callbacks.
+    def self.to_prepare(*args, &block)
+      set_callback(:prepare, *args, &block)
+    end
+
+    # Add a cleanup callback. Cleanup callbacks are run after each request is
+    # complete (after #close is called on the response body).
+    def self.to_cleanup(*args, &block)
+      set_callback(:cleanup, *args, &block)
+    end
+
+    # Execute all prepare callbacks.
+    def self.prepare!
+      new(nil).run_callbacks :prepare
+    end
+
+    # Execute all cleanup callbacks.
+    def self.cleanup!
+      new(nil).run_callbacks :cleanup
+    end
+
+    def initialize(app)
+      @app = app
+    end
+
+    module CleanupOnClose
+      def close
+        super if defined?(super)
+      ensure
+        ActionDispatch::Reloader.cleanup!
+      end
+    end
+
+    def call(env)
+      run_callbacks :prepare
+      response = @app.call(env)
+      response[2].extend(CleanupOnClose)
+      response
+    rescue Exception
+      run_callbacks :cleanup
+      raise
+    end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb b/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
index dd82294644..64d3a87fd0 100644
--- a/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
@@ -1,5 +1,6 @@
 require 'rack/utils'
 require 'rack/request'
+require 'rack/session/abstract/id'
 require 'action_dispatch/middleware/cookies'
 require 'active_support/core_ext/object/blank'
 
@@ -8,249 +9,76 @@ module ActionDispatch
     class SessionRestoreError < StandardError #:nodoc:
     end
 
-    class AbstractStore
-      ENV_SESSION_KEY = 'rack.session'.freeze
-      ENV_SESSION_OPTIONS_KEY = 'rack.session.options'.freeze
-
-      # thin wrapper around Hash that allows us to lazily
-      # load session id into session_options
-      class OptionsHash < Hash
-        def initialize(by, env, default_options)
-          @by = by
-          @env = env
-          @session_id_loaded = false
-          merge!(default_options)
-        end
-
-        def [](key)
-          if key == :id
-            load_session_id! unless key?(:id) || has_session_id?
-          end
-          super
-        end
-
-      private
-
-        def has_session_id?
-          @session_id_loaded
-        end
-
-        def load_session_id!
-          self[:id] = @by.send(:extract_session_id, @env)
-          @session_id_loaded = true
-        end
-      end
-
-      class SessionHash < Hash
-        def initialize(by, env)
-          super()
-          @by = by
-          @env = env
-          @loaded = false
-        end
-
-        def [](key)
-          load_for_read!
-          super(key.to_s)
-        end
-
-        def has_key?(key)
-          load_for_read!
-          super(key.to_s)
-        end
-
-        def []=(key, value)
-          load_for_write!
-          super(key.to_s, value)
-        end
-
-        def clear
-          load_for_write!
-          super
-        end
-
-        def to_hash
-          load_for_read!
-          h = {}.replace(self)
-          h.delete_if { |k,v| v.nil? }
-          h
-        end
-
-        def update(hash)
-          load_for_write!
-          super(hash.stringify_keys)
-        end
-
-        def delete(key)
-          load_for_write!
-          super(key.to_s)
-        end
-
-        def inspect
-          load_for_read!
-          super
-        end
-
-        def exists?
-          return @exists if instance_variable_defined?(:@exists)
-          @exists = @by.send(:exists?, @env)
-        end
-
-        def loaded?
-          @loaded
-        end
-
-        def destroy
-          clear
-          @by.send(:destroy, @env) if @by
-          @env[ENV_SESSION_OPTIONS_KEY][:id] = nil if @env && @env[ENV_SESSION_OPTIONS_KEY]
-          @loaded = false
-        end
-
-        private
-
-          def load_for_read!
-            load! if !loaded? && exists?
-          end
-
-          def load_for_write!
-            load! unless loaded?
-          end
-
-          def load!
-            id, session = @by.send(:load_session, @env)
-            @env[ENV_SESSION_OPTIONS_KEY][:id] = id
-            replace(session.stringify_keys)
-            @loaded = true
-          end
-
+    module DestroyableSession
+      def destroy
+        clear
+        options = @env[Rack::Session::Abstract::ENV_SESSION_OPTIONS_KEY] if @env
+        options ||= {}
+        @by.send(:destroy_session, @env, options[:id], options) if @by
+        options[:id] = nil
+        @loaded = false
       end
+    end
 
-      DEFAULT_OPTIONS = {
-        :key =>           '_session_id',
-        :path =>          '/',
-        :domain =>        nil,
-        :expire_after =>  nil,
-        :secure =>        false,
-        :httponly =>      true,
-        :cookie_only =>   true
-      }
+    ::Rack::Session::Abstract::SessionHash.send :include, DestroyableSession
 
+    module Compatibility
       def initialize(app, options = {})
-        @app = app
-        @default_options = DEFAULT_OPTIONS.merge(options)
-        @key = @default_options.delete(:key).freeze
-        @cookie_only = @default_options.delete(:cookie_only)
-        ensure_session_key!
+        options[:key] ||= '_session_id'
+        super
       end
 
-      def call(env)
-        prepare!(env)
-        response = @app.call(env)
-
-        session_data = env[ENV_SESSION_KEY]
-        options = env[ENV_SESSION_OPTIONS_KEY]
-
-        if !session_data.is_a?(AbstractStore::SessionHash) || session_data.loaded? || options[:expire_after]
-          session_data.send(:load!) if session_data.is_a?(AbstractStore::SessionHash) && !session_data.loaded?
-
-          sid = options[:id] || generate_sid
-          session_data = session_data.to_hash
-
-          value = set_session(env, sid, session_data)
-          return response unless value
-
-          cookie = { :value => value }
-          unless options[:expire_after].nil?
-            cookie[:expires] = Time.now + options.delete(:expire_after)
-          end
-
-          request = ActionDispatch::Request.new(env)
-          set_cookie(request, cookie.merge!(options))
-        end
-
-        response
+      def generate_sid
+        ActiveSupport::SecureRandom.hex(16)
       end
 
-      private
-
-        def prepare!(env)
-          env[ENV_SESSION_KEY] = SessionHash.new(self, env)
-          env[ENV_SESSION_OPTIONS_KEY] = OptionsHash.new(self, env, @default_options)
-        end
-
-        def generate_sid
-          ActiveSupport::SecureRandom.hex(16)
-        end
-
-        def set_cookie(request, options)
-          if request.cookie_jar[@key] != options[:value] || !options[:expires].nil?
-            request.cookie_jar[@key] = options
-          end
-        end
-
-        def load_session(env)
-          stale_session_check! do
-            sid = current_session_id(env)
-            sid, session = get_session(env, sid)
-            [sid, session]
-          end
-        end
+    protected
 
-        def extract_session_id(env)
-          stale_session_check! do
-            request = ActionDispatch::Request.new(env)
-            sid = request.cookies[@key]
-            sid ||= request.params[@key] unless @cookie_only
-            sid
-          end
-        end
+      def initialize_sid
+        @default_options.delete(:sidbits)
+        @default_options.delete(:secure_random)
+      end
+    end
 
-        def current_session_id(env)
-          env[ENV_SESSION_OPTIONS_KEY][:id]
-        end
+    module StaleSessionCheck
+      def load_session(env)
+        stale_session_check! { super }
+      end
 
-        def ensure_session_key!
-          if @key.blank?
-            raise ArgumentError, 'A key is required to write a ' +
-              'cookie containing the session data. Use ' +
-              'config.session_store SESSION_STORE, { :key => ' +
-              '"_myapp_session" } in config/application.rb'
-          end
-        end
+      def extract_session_id(env)
+        stale_session_check! { super }
+      end
 
-        def stale_session_check!
-          yield
-        rescue ArgumentError => argument_error
-          if argument_error.message =~ %r{undefined class/module ([\w:]*\w)}
-            begin
-              # Note that the regexp does not allow $1 to end with a ':'
-              $1.constantize
-            rescue LoadError, NameError => const_error
-              raise ActionDispatch::Session::SessionRestoreError, "Session contains objects whose class definition isn't available.\nRemember to require the classes for all objects kept in the session.\n(Original exception: #{const_error.message} [#{const_error.class}])\n"
-            end
-            retry
-          else
-            raise
+      def stale_session_check!
+        yield
+      rescue ArgumentError => argument_error
+        if argument_error.message =~ %r{undefined class/module ([\w:]*\w)}
+          begin
+            # Note that the regexp does not allow $1 to end with a ':'
+            $1.constantize
+          rescue LoadError, NameError => const_error
+            raise ActionDispatch::Session::SessionRestoreError, "Session contains objects whose class definition isn't available.\nRemember to require the classes for all objects kept in the session.\n(Original exception: #{const_error.message} [#{const_error.class}])\n"
           end
+          retry
+        else
+          raise
         end
+      end
+    end
 
-        def exists?(env)
-          current_session_id(env).present?
-        end
-
-        def get_session(env, sid)
-          raise '#get_session needs to be implemented.'
-        end
+    class AbstractStore < Rack::Session::Abstract::ID
+      include Compatibility
+      include StaleSessionCheck
 
-        def set_session(env, sid, session_data)
-          raise '#set_session needs to be implemented and should return ' <<
-            'the value to be stored in the cookie (usually the sid)'
-        end
+      def destroy_session(env, sid, options)
+        ActiveSupport::Deprecation.warn "Implementing #destroy in session stores is deprecated. " <<
+          "Please implement destroy_session(env, session_id, options) instead."
+        destroy(env)
+      end
 
-        def destroy(env)
-          raise '#destroy needs to be implemented.'
-        end
+      def destroy(env)
+        raise '#destroy needs to be implemented.'
+      end
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb b/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
index ca1494425f..9c9ccc62f5 100644
--- a/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
@@ -1,5 +1,7 @@
 require 'active_support/core_ext/hash/keys'
 require 'active_support/core_ext/object/blank'
+require 'action_dispatch/middleware/session/abstract_store'
+require 'rack/session/cookie'
 
 module ActionDispatch
   module Session
@@ -38,58 +40,32 @@ module ActionDispatch
     # "rake secret" and set the key in config/initializers/secret_token.rb.
     #
     # Note that changing digest or secret invalidates all existing sessions!
-    class CookieStore < AbstractStore
-
-      def initialize(app, options = {})
-        super(app, options.merge!(:cookie_only => true))
-        freeze
-      end
+    class CookieStore < Rack::Session::Cookie
+      include Compatibility
+      include StaleSessionCheck
 
       private
 
-        def load_session(env)
-          data = unpacked_cookie_data(env)
-          data = persistent_session_id!(data)
-          [data["session_id"], data]
-        end
-
-        def extract_session_id(env)
-          if data = unpacked_cookie_data(env)
-            data["session_id"]
-          else
-            nil
-          end
-        end
-
-        def unpacked_cookie_data(env)
-          env["action_dispatch.request.unsigned_session_cookie"] ||= begin
-            stale_session_check! do
-              request = ActionDispatch::Request.new(env)
-              if data = request.cookie_jar.signed[@key]
-                data.stringify_keys!
-              end
-              data || {}
+      def unpacked_cookie_data(env)
+        env["action_dispatch.request.unsigned_session_cookie"] ||= begin
+          stale_session_check! do
+            request = ActionDispatch::Request.new(env)
+            if data = request.cookie_jar.signed[@key]
+              data.stringify_keys!
             end
+            data || {}
           end
         end
+      end
 
-        def set_cookie(request, options)
-          request.cookie_jar.signed[@key] = options
-        end
-
-        def set_session(env, sid, session_data)
-          persistent_session_id!(session_data, sid)
-        end
-
-        def destroy(env)
-          # session data is stored on client; nothing to do here
-        end
+      def set_session(env, sid, session_data, options)
+        persistent_session_id!(session_data, sid)
+      end
 
-        def persistent_session_id!(data, sid=nil)
-          data ||= {}
-          data["session_id"] ||= sid || generate_sid
-          data
-        end
+      def set_cookie(env, session_id, cookie)
+        request = ActionDispatch::Request.new(env)
+        request.cookie_jar.signed[@key] = cookie
+      end
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/middleware/session/mem_cache_store.rb b/actionpack/lib/action_dispatch/middleware/session/mem_cache_store.rb
index 28e3dbd732..4dd9a946c2 100644
--- a/actionpack/lib/action_dispatch/middleware/session/mem_cache_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/mem_cache_store.rb
@@ -1,56 +1,17 @@
+require 'action_dispatch/middleware/session/abstract_store'
+require 'rack/session/memcache'
+
 module ActionDispatch
   module Session
-    class MemCacheStore < AbstractStore
+    class MemCacheStore < Rack::Session::Memcache
+      include Compatibility
+      include StaleSessionCheck
+
       def initialize(app, options = {})
         require 'memcache'
-
-        # Support old :expires option
         options[:expire_after] ||= options[:expires]
-
-        super
-
-        @default_options = {
-          :namespace => 'rack:session',
-          :memcache_server => 'localhost:11211'
-        }.merge(@default_options)
-
-        @pool = options[:cache] || MemCache.new(@default_options[:memcache_server], @default_options)
-        unless @pool.servers.any? { |s| s.alive? }
-          raise "#{self} unable to find server during initialization."
-        end
-        @mutex = Mutex.new
-
         super
       end
-
-      private
-        def get_session(env, sid)
-          sid ||= generate_sid
-          begin
-            session = @pool.get(sid) || {}
-          rescue MemCache::MemCacheError, Errno::ECONNREFUSED
-            session = {}
-          end
-          [sid, session]
-        end
-
-        def set_session(env, sid, session_data)
-          options = env['rack.session.options']
-          expiry  = options[:expire_after] || 0
-          @pool.set(sid, session_data, expiry)
-          sid
-        rescue MemCache::MemCacheError, Errno::ECONNREFUSED
-          false
-        end
-
-        def destroy(env)
-          if sid = current_session_id(env)
-            @pool.delete(sid)
-          end
-        rescue MemCache::MemCacheError, Errno::ECONNREFUSED
-          false
-        end
-
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/middleware/show_exceptions.rb b/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
index e095b51342..dbe3206808 100644
--- a/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
+++ b/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
@@ -6,8 +6,6 @@ module ActionDispatch
   # This middleware rescues any exception returned by the application and renders
   # nice exception pages if it's being rescued locally.
   class ShowExceptions
-    LOCALHOST = [/^127\.0\.0\.\d{1,3}$/, "::1", /^0:0:0:0:0:0:0:1(%.*)?$/].freeze
-
     RESCUES_TEMPLATE_PATH = File.join(File.dirname(__FILE__), 'templates')
 
     cattr_accessor :rescue_responses
@@ -45,28 +43,29 @@ module ActionDispatch
     end
 
     def call(env)
-      status, headers, body = @app.call(env)
-
-      # Only this middleware cares about RoutingError. So, let's just raise
-      # it here.
-      # TODO: refactor this middleware to handle the X-Cascade scenario without
-      # having to raise an exception.
-      if headers['X-Cascade'] == 'pass'
-        raise ActionController::RoutingError, "No route matches #{env['PATH_INFO'].inspect}"
+      begin
+        status, headers, body = @app.call(env)
+        exception = nil
+
+        # Only this middleware cares about RoutingError. So, let's just raise
+        # it here.
+        if headers['X-Cascade'] == 'pass'
+           raise ActionController::RoutingError, "No route matches #{env['PATH_INFO'].inspect}"
+        end
+      rescue Exception => exception
+        raise exception if env['action_dispatch.show_exceptions'] == false
       end
 
-      [status, headers, body]
-    rescue Exception => exception
-      raise exception if env['action_dispatch.show_exceptions'] == false
-      render_exception(env, exception)
+      exception ? render_exception(env, exception) : [status, headers, body]
     end
 
     private
       def render_exception(env, exception)
         log_error(exception)
+        exception = original_exception(exception)
 
         request = Request.new(env)
-        if @consider_all_requests_local || local_request?(request)
+        if @consider_all_requests_local || request.local?
           rescue_action_locally(request, exception)
         else
           rescue_action_in_public(exception)
@@ -112,11 +111,6 @@ module ActionDispatch
         end
       end
 
-      # True if the request came from localhost, 127.0.0.1.
-      def local_request?(request)
-        LOCALHOST.any? { |local_ip| local_ip === request.remote_addr && local_ip === request.remote_ip }
-      end
-
       def status_code(exception)
         Rack::Utils.status_code(@@rescue_responses[exception.class.name])
       end
@@ -134,7 +128,7 @@ module ActionDispatch
 
         ActiveSupport::Deprecation.silence do
           message = "\n#{exception.class} (#{exception.message}):\n"
-          message << exception.annoted_source_code if exception.respond_to?(:annoted_source_code)
+          message << exception.annoted_source_code.to_s if exception.respond_to?(:annoted_source_code)
           message << "  " << application_trace(exception).join("\n  ")
           logger.fatal("#{message}\n\n")
         end
@@ -161,5 +155,17 @@ module ActionDispatch
       def logger
         defined?(Rails.logger) ? Rails.logger : Logger.new($stderr)
       end
+
+    def original_exception(exception)
+      if registered_original_exception?(exception)
+        exception.original_exception
+      else
+        exception
+      end
+    end
+
+    def registered_original_exception?(exception)
+      exception.respond_to?(:original_exception) && @@rescue_responses.has_key?(exception.original_exception.class.name)
+    end
   end
 end
diff --git a/actionpack/lib/action_dispatch/middleware/stack.rb b/actionpack/lib/action_dispatch/middleware/stack.rb
index 41078eced7..a4308f528c 100644
--- a/actionpack/lib/action_dispatch/middleware/stack.rb
+++ b/actionpack/lib/action_dispatch/middleware/stack.rb
@@ -1,17 +1,27 @@
 require "active_support/inflector/methods"
+require "active_support/dependencies"
 
 module ActionDispatch
-  class MiddlewareStack < Array
+  class MiddlewareStack
     class Middleware
-      attr_reader :args, :block
+      attr_reader :args, :block, :name, :classcache
 
       def initialize(klass_or_name, *args, &block)
-        @ref = ActiveSupport::Dependencies::Reference.new(klass_or_name)
+        @klass = nil
+
+        if klass_or_name.respond_to?(:name)
+          @klass = klass_or_name
+          @name  = @klass.name
+        else
+          @name  = klass_or_name.to_s
+        end
+
+        @classcache = ActiveSupport::Dependencies::Reference
         @args, @block = args, block
       end
 
       def klass
-        @ref.get
+        @klass || classcache[@name]
       end
 
       def ==(middleware)
@@ -21,7 +31,7 @@ module ActionDispatch
         when Class
           klass == middleware
         else
-          normalize(@ref.name) == normalize(middleware)
+          normalize(@name) == normalize(middleware)
         end
       end
 
@@ -40,15 +50,39 @@ module ActionDispatch
       end
     end
 
-    def initialize(*args, &block)
-      super(*args)
-      block.call(self) if block_given?
+    include Enumerable
+
+    attr_accessor :middlewares
+
+    def initialize(*args)
+      @middlewares = []
+      yield(self) if block_given?
+    end
+
+    def each
+      @middlewares.each { |x| yield x }
+    end
+
+    def size
+      middlewares.size
+    end
+
+    def last
+      middlewares.last
+    end
+
+    def [](i)
+      middlewares[i]
+    end
+
+    def initialize_copy(other)
+      self.middlewares = other.middlewares.dup
     end
 
     def insert(index, *args, &block)
       index = assert_index(index, :before)
       middleware = self.class::Middleware.new(*args, &block)
-      super(index, middleware)
+      middlewares.insert(index, middleware)
     end
 
     alias_method :insert_before, :insert
@@ -63,26 +97,25 @@ module ActionDispatch
       delete(target)
     end
 
-    def use(*args, &block)
-      middleware = self.class::Middleware.new(*args, &block)
-      push(middleware)
+    def delete(target)
+      middlewares.delete target
     end
 
-    def active
-      ActiveSupport::Deprecation.warn "All middlewares in the chain are active since the laziness " << 
-        "was removed from the middleware stack", caller
+    def use(*args, &block)
+      middleware = self.class::Middleware.new(*args, &block)
+      middlewares.push(middleware)
     end
 
     def build(app = nil, &block)
       app ||= block
       raise "MiddlewareStack#build requires an app" unless app
-      reverse.inject(app) { |a, e| e.build(a) }
+      middlewares.reverse.inject(app) { |a, e| e.build(a) }
     end
 
   protected
 
     def assert_index(index, where)
-      i = index.is_a?(Integer) ? index : self.index(index)
+      i = index.is_a?(Integer) ? index : middlewares.index(index)
       raise "No such middleware to insert #{where}: #{index.inspect}" unless i
       i
     end
diff --git a/actionpack/lib/action_dispatch/middleware/static.rb b/actionpack/lib/action_dispatch/middleware/static.rb
index d7e88a54e4..c57f694c4d 100644
--- a/actionpack/lib/action_dispatch/middleware/static.rb
+++ b/actionpack/lib/action_dispatch/middleware/static.rb
@@ -1,12 +1,47 @@
 require 'rack/utils'
 
 module ActionDispatch
+  class FileHandler
+    def initialize(at, root)
+      @at, @root     = at.chomp('/'), root.chomp('/')
+      @compiled_at   = @at.blank? ? nil : /^#{Regexp.escape(at)}/
+      @compiled_root = /^#{Regexp.escape(root)}/
+      @file_server   = ::Rack::File.new(@root)
+    end
+
+    def match?(path)
+      path = path.dup
+      if !@compiled_at || path.sub!(@compiled_at, '')
+        full_path = path.empty? ? @root : File.join(@root, ::Rack::Utils.unescape(path))
+        paths = "#{full_path}#{ext}"
+
+        matches = Dir[paths]
+        match = matches.detect { |m| File.file?(m) }
+        if match
+          match.sub!(@compiled_root, '')
+          match
+        end
+      end
+    end
+
+    def call(env)
+      @file_server.call(env)
+    end
+
+    def ext
+      @ext ||= begin
+        ext = ::ActionController::Base.page_cache_extension
+        "{,#{ext},/index#{ext}}"
+      end
+    end
+  end
+
   class Static
     FILE_METHODS = %w(GET HEAD).freeze
 
-    def initialize(app, root)
+    def initialize(app, roots)
       @app = app
-      @file_server = ::Rack::File.new(root)
+      @file_handlers = create_file_handlers(roots)
     end
 
     def call(env)
@@ -14,15 +49,10 @@ module ActionDispatch
       method = env['REQUEST_METHOD']
 
       if FILE_METHODS.include?(method)
-        if file_exist?(path)
-          return @file_server.call(env)
-        else
-          cached_path = directory_exist?(path) ? "#{path}/index" : path
-          cached_path += ::ActionController::Base.page_cache_extension
-
-          if file_exist?(cached_path)
-            env['PATH_INFO'] = cached_path
-            return @file_server.call(env)
+        @file_handlers.each do |file_handler|
+          if match = file_handler.match?(path)
+            env["PATH_INFO"] = match
+            return file_handler.call(env)
           end
         end
       end
@@ -31,14 +61,12 @@ module ActionDispatch
     end
 
     private
-      def file_exist?(path)
-        full_path = File.join(@file_server.root, ::Rack::Utils.unescape(path))
-        File.file?(full_path) && File.readable?(full_path)
-      end
+      def create_file_handlers(roots)
+        roots = { '' => roots } unless roots.is_a?(Hash)
 
-      def directory_exist?(path)
-        full_path = File.join(@file_server.root, ::Rack::Utils.unescape(path))
-        File.directory?(full_path) && File.readable?(full_path)
+        roots.map do |at, root|
+          FileHandler.new(at, root) if File.exist?(root)
+        end.compact
       end
   end
 end
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb
index e963b04524..97f7cf0bbe 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb
@@ -14,7 +14,7 @@
 
   def debug_hash(hash)
     hash.sort_by { |k, v| k.to_s }.map { |k, v| "#{k}: #{v.inspect rescue $!.message}" }.join("\n")
-  end
+  end unless self.class.method_defined?(:debug_hash)
 %>
 
 <h2 style="margin-top: 30px">Request</h2>
@@ -28,4 +28,4 @@
 
 
 <h2 style="margin-top: 30px">Response</h2>
-<p><b>Headers</b>: <pre><%=h @response ? @response.headers.inspect.gsub(',', ",\n") : 'None' %></pre></p>
+<p><b>Headers</b>: <pre><%=h defined?(@response) ? @response.headers.inspect.gsub(',', ",\n") : 'None' %></pre></p>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb
index d18b162a93..8771b5fd6d 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb
@@ -12,14 +12,14 @@
 <div id="traces">
   <% names.each do |name| %>
     <%
-      show = "document.getElementById('#{name.gsub /\s/, '-'}').style.display='block';"
-      hide = (names - [name]).collect {|hide_name| "document.getElementById('#{hide_name.gsub /\s/, '-'}').style.display='none';"}
+      show = "document.getElementById('#{name.gsub(/\s/, '-')}').style.display='block';"
+      hide = (names - [name]).collect {|hide_name| "document.getElementById('#{hide_name.gsub(/\s/, '-')}').style.display='none';"}
     %>
     <a href="#" onclick="<%= hide.join %><%= show %>; return false;"><%= name %></a> <%= '|' unless names.last == name %>
   <% end %>
 
   <% traces.each do |name, trace| %>
-    <div id="<%= name.gsub /\s/, '-' %>" style="display: <%= name == "Application Trace" ? 'block' : 'none' %>;">
+    <div id="<%= name.gsub(/\s/, '-') %>" style="display: <%= (name == "Application Trace") ? 'block' : 'none' %>;">
       <pre><code><%=h trace.join "\n" %></code></pre>
     </div>
   <% end %>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
index bd6ffbab5d..50d8ca9484 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
@@ -6,5 +6,5 @@
 </h1>
 <pre><%=h @exception.message %></pre>
 
-<%= render :file => "rescues/_trace.erb" %>
-<%= render :file => "rescues/_request_and_response.erb" %>
+<%= render :template => "rescues/_trace" %>
+<%= render :template => "rescues/_request_and_response" %>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.erb
index 02fa18211d..c658559be9 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.erb
@@ -13,9 +13,5 @@
 
 <p><%=h @exception.sub_template_message %></p>
 
-<% @real_exception = @exception
-   @exception = @exception.original_exception || @exception %>
-<%= render :file => "rescues/_trace.erb" %>
-<% @exception = @real_exception %>
-
-<%= render :file => "rescues/_request_and_response.erb" %>
+<%= render :template => "rescues/_trace" %>
+<%= render :template => "rescues/_request_and_response" %>
diff --git a/actionpack/lib/action_dispatch/railtie.rb b/actionpack/lib/action_dispatch/railtie.rb
index a3af37947a..0a3bd5fe40 100644
--- a/actionpack/lib/action_dispatch/railtie.rb
+++ b/actionpack/lib/action_dispatch/railtie.rb
@@ -8,10 +8,11 @@ module ActionDispatch
     config.action_dispatch.ip_spoofing_check = true
     config.action_dispatch.show_exceptions = true
     config.action_dispatch.best_standards_support = true
+    config.action_dispatch.tld_length = 1
+    config.action_dispatch.rack_cache = {:metastore => "rails:/", :entitystore => "rails:/", :verbose => true}
 
-    # Prepare dispatcher callbacks and run 'prepare' callbacks
-    initializer "action_dispatch.prepare_dispatcher" do |app|
-      ActionDispatch::Callbacks.to_prepare { app.routes_reloader.execute_if_updated }
+    initializer "action_dispatch.configure" do |app|
+      ActionDispatch::Http::URL.tld_length = app.config.action_dispatch.tld_length
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/routing.rb b/actionpack/lib/action_dispatch/routing.rb
index 683dd72555..43fd93adf6 100644
--- a/actionpack/lib/action_dispatch/routing.rb
+++ b/actionpack/lib/action_dispatch/routing.rb
@@ -2,31 +2,11 @@ require 'active_support/core_ext/object/to_param'
 require 'active_support/core_ext/regexp'
 
 module ActionDispatch
-  # = Routing
-  #
   # The routing module provides URL rewriting in native Ruby. It's a way to
   # redirect incoming requests to controllers and actions. This replaces
-  # mod_rewrite rules. Best of all, Rails' Routing works with any web server.
+  # mod_rewrite rules. Best of all, Rails' \Routing works with any web server.
   # Routes are defined in <tt>config/routes.rb</tt>.
   #
-  # Consider the following route, which you will find commented out at the
-  # bottom of your generated <tt>config/routes.rb</tt>:
-  #
-  #   match ':controller(/:action(/:id(.:format)))'
-  #
-  # This route states that it expects requests to consist of a
-  # <tt>:controller</tt> followed optionally by an <tt>:action</tt> that in 
-  # turn is followed optionally by an <tt>:id</tt>, which in turn is followed
-  # optionally by a <tt>:format</tt>
-  #
-  # Suppose you get an incoming request for <tt>/blog/edit/22</tt>, you'll end
-  # up with:
-  #
-  #   params = { :controller => 'blog',
-  #              :action     => 'edit',
-  #              :id         => '22'
-  #           }
-  #
   # Think of creating routes as drawing a map for your requests. The map tells
   # them where to go based on some predefined pattern:
   #
@@ -43,6 +23,51 @@ module ActionDispatch
   #
   # Other names simply map to a parameter as in the case of <tt>:id</tt>.
   #
+  # == Resources
+  #
+  # Resource routing allows you to quickly declare all of the common routes
+  # for a given resourceful controller. Instead of declaring separate routes
+  # for your +index+, +show+, +new+, +edit+, +create+, +update+ and +destroy+
+  # actions, a resourceful route declares them in a single line of code:
+  #
+  #  resources :photos
+  #
+  # Sometimes, you have a resource that clients always look up without
+  # referencing an ID. A common example, /profile always shows the profile of
+  # the currently logged in user. In this case, you can use a singular resource
+  # to map /profile (rather than /profile/:id) to the show action.
+  #
+  #  resource :profile
+  #
+  # It's common to have resources that are logically children of other
+  # resources:
+  #
+  #   resources :magazines do
+  #     resources :ads
+  #   end
+  #
+  # You may wish to organize groups of controllers under a namespace. Most
+  # commonly, you might group a number of administrative controllers under
+  # an +admin+ namespace. You would place these controllers under the
+  # app/controllers/admin directory, and you can group them together in your
+  # router:
+  #
+  #   namespace "admin" do
+  #     resources :posts, :comments
+  #   end
+  #
+  # Alternately, you can add prefixes to your path without using a separate
+  # directory by using +scope+. +scope+ takes additional options which
+  # apply to all enclosed routes.
+  #
+  #   scope :path => "/cpanel", :as => 'admin' do
+  #     resources :posts, :comments
+  #   end
+  #
+  # For more, see <tt>Routing::Mapper::Resources#resources</tt>,
+  # <tt>Routing::Mapper::Scoping#namespace</tt>, and
+  # <tt>Routing::Mapper::Scoping#scope</tt>.
+  #
   # == Named routes
   #
   # Routes can be named by passing an <tt>:as</tt> option,
@@ -131,11 +156,35 @@ module ActionDispatch
   # Encoding regular expression modifiers are silently ignored. The
   # match will always use the default encoding or ASCII.
   #
+  # == Default route
+  #
+  # Consider the following route, which you will find commented out at the
+  # bottom of your generated <tt>config/routes.rb</tt>:
+  #
+  #   match ':controller(/:action(/:id(.:format)))'
+  #
+  # This route states that it expects requests to consist of a
+  # <tt>:controller</tt> followed optionally by an <tt>:action</tt> that in
+  # turn is followed optionally by an <tt>:id</tt>, which in turn is followed
+  # optionally by a <tt>:format</tt>.
+  #
+  # Suppose you get an incoming request for <tt>/blog/edit/22</tt>, you'll end
+  # up with:
+  #
+  #   params = { :controller => 'blog',
+  #              :action     => 'edit',
+  #              :id         => '22'
+  #           }
+  #
+  # By not relying on default routes, you improve the security of your
+  # application since not all controller actions, which includes actions you
+  # might add at a later time, are exposed by default.
+  #
   # == HTTP Methods
   #
   # Using the <tt>:via</tt> option when specifying a route allows you to restrict it to a specific HTTP method.
-  # Possible values are <tt>:post</tt>, <tt>:get</tt>, <tt>:put</tt>, <tt>:delete</tt> and <tt>:any</tt>. 
-  # If your route needs to respond to more than one method you can use an array, e.g. <tt>[ :get, :post ]</tt>. 
+  # Possible values are <tt>:post</tt>, <tt>:get</tt>, <tt>:put</tt>, <tt>:delete</tt> and <tt>:any</tt>.
+  # If your route needs to respond to more than one method you can use an array, e.g. <tt>[ :get, :post ]</tt>.
   # The default value is <tt>:any</tt> which means that the route will respond to any of the HTTP methods.
   #
   # Examples:
@@ -144,7 +193,7 @@ module ActionDispatch
   #   match 'post/:id' => "posts#create_comment', :via => :post
   #
   # Now, if you POST to <tt>/posts/:id</tt>, it will route to the <tt>create_comment</tt> action. A GET on the same
-  # URL will route to the <tt>show</tt> action. 
+  # URL will route to the <tt>show</tt> action.
   #
   # === HTTP helper methods
   #
@@ -160,6 +209,20 @@ module ActionDispatch
   # however if your route needs to respond to more than one HTTP method (or all methods) then using the
   # <tt>:via</tt> option on <tt>match</tt> is preferable.
   #
+  # == External redirects
+  #
+  # You can redirect any path to another path using the redirect helper in your router:
+  #
+  #   match "/stories" => redirect("/posts")
+  #
+  # == Routing to Rack Applications
+  #
+  # Instead of a String, like <tt>posts#index</tt>, which corresponds to the
+  # index action in the PostsController, you can specify any Rack application
+  # as the endpoint for a matcher:
+  #
+  #   match "/application.js" => Sprockets
+  #
   # == Reloading routes
   #
   # You can reload routes if you feel you must:
@@ -208,13 +271,15 @@ module ActionDispatch
   #
   # == View a list of all your routes
   #
-  # Run <tt>rake routes</tt>.
+  #   rake routes
+  #
+  # Target specific controllers by prefixing the command with <tt>CONTROLLER=x</tt>.
   #
   module Routing
-    autoload :DeprecatedMapper, 'action_dispatch/routing/deprecated_mapper'
     autoload :Mapper, 'action_dispatch/routing/mapper'
     autoload :Route, 'action_dispatch/routing/route'
     autoload :RouteSet, 'action_dispatch/routing/route_set'
+    autoload :RoutesProxy, 'action_dispatch/routing/routes_proxy'
     autoload :UrlFor, 'action_dispatch/routing/url_for'
     autoload :PolymorphicRoutes, 'action_dispatch/routing/polymorphic_routes'
 
diff --git a/actionpack/lib/action_dispatch/routing/deprecated_mapper.rb b/actionpack/lib/action_dispatch/routing/deprecated_mapper.rb
deleted file mode 100644
index e04062ce8b..0000000000
--- a/actionpack/lib/action_dispatch/routing/deprecated_mapper.rb
+++ /dev/null
@@ -1,525 +0,0 @@
-require 'active_support/core_ext/object/blank'
-require 'active_support/core_ext/object/with_options'
-require 'active_support/core_ext/object/try'
-
-module ActionDispatch
-  module Routing
-    class RouteSet
-      attr_accessor :controller_namespaces
-
-      CONTROLLER_REGEXP = /[_a-zA-Z0-9]+/
-
-      def controller_constraints
-        @controller_constraints ||= begin
-          namespaces = controller_namespaces + in_memory_controller_namespaces
-          source = namespaces.map { |ns| "#{Regexp.escape(ns)}/#{CONTROLLER_REGEXP.source}" }
-          source << CONTROLLER_REGEXP.source
-          Regexp.compile(source.sort.reverse.join('|'))
-        end
-      end
-
-      def in_memory_controller_namespaces
-        namespaces = Set.new
-        ActionController::Base.descendants.each do |klass|
-          next if klass.anonymous?
-          namespaces << klass.name.underscore.split('/')[0...-1].join('/')
-        end
-        namespaces.delete('')
-        namespaces
-      end
-    end
-
-    class DeprecatedMapper #:nodoc:
-      def initialize(set) #:nodoc:
-        ActiveSupport::Deprecation.warn "You are using the old router DSL which will be removed in Rails 3.1. " <<
-          "Please check how to update your routes file at: http://www.engineyard.com/blog/2010/the-lowdown-on-routes-in-rails-3/"
-        @set = set
-      end
-
-      def connect(path, options = {})
-        options = options.dup
-
-        if conditions = options.delete(:conditions)
-          conditions = conditions.dup
-          method = [conditions.delete(:method)].flatten.compact
-          method.map! { |m|
-            m = m.to_s.upcase
-
-            if m == "HEAD"
-              raise ArgumentError, "HTTP method HEAD is invalid in route conditions. Rails processes HEAD requests the same as GETs, returning just the response headers"
-            end
-
-            unless HTTP_METHODS.include?(m.downcase.to_sym)
-              raise ArgumentError, "Invalid HTTP method specified in route conditions"
-            end
-
-            m
-          }
-
-          if method.length > 1
-            method = Regexp.union(*method)
-          elsif method.length == 1
-            method = method.first
-          else
-            method = nil
-          end
-        end
-
-        path_prefix = options.delete(:path_prefix)
-        name_prefix = options.delete(:name_prefix)
-        namespace  = options.delete(:namespace)
-
-        name = options.delete(:_name)
-        name = "#{name_prefix}#{name}" if name_prefix
-
-        requirements = options.delete(:requirements) || {}
-        defaults = options.delete(:defaults) || {}
-        options.each do |k, v|
-          if v.is_a?(Regexp)
-            if value = options.delete(k)
-              requirements[k.to_sym] = value
-            end
-          else
-            value = options.delete(k)
-            defaults[k.to_sym] = value.is_a?(Symbol) ? value : value.to_param
-          end
-        end
-
-        requirements.each do |_, requirement|
-          if requirement.source =~ %r{\A(\\A|\^)|(\\Z|\\z|\$)\Z}
-            raise ArgumentError, "Regexp anchor characters are not allowed in routing requirements: #{requirement.inspect}"
-          end
-          if requirement.multiline?
-            raise ArgumentError, "Regexp multiline option not allowed in routing requirements: #{requirement.inspect}"
-          end
-        end
-
-        requirements[:controller] ||= @set.controller_constraints
-
-        if defaults[:controller]
-          defaults[:action] ||= 'index'
-          defaults[:controller] = defaults[:controller].to_s
-          defaults[:controller] = "#{namespace}#{defaults[:controller]}" if namespace
-        end
-
-        if defaults[:action]
-          defaults[:action] = defaults[:action].to_s
-        end
-
-        if path.is_a?(String)
-          path = "#{path_prefix}/#{path}" if path_prefix
-          path = path.gsub('.:format', '(.:format)')
-          path = optionalize_trailing_dynamic_segments(path, requirements, defaults)
-          glob = $1.to_sym if path =~ /\/\*(\w+)$/
-          path = ::Rack::Mount::Utils.normalize_path(path)
-
-          if glob && !defaults[glob].blank?
-            raise ActionController::RoutingError, "paths cannot have non-empty default values"
-          end
-        end
-
-        app = Routing::RouteSet::Dispatcher.new(:defaults => defaults, :glob => glob)
-
-        conditions = {}
-        conditions[:request_method] = method if method
-        conditions[:path_info] = path if path
-
-        @set.add_route(app, conditions, requirements, defaults, name)
-      end
-
-      def optionalize_trailing_dynamic_segments(path, requirements, defaults) #:nodoc:
-        path = (path =~ /^\//) ? path.dup : "/#{path}"
-        optional, segments = true, []
-
-        required_segments = requirements.keys
-        required_segments -= defaults.keys.compact
-
-        old_segments = path.split('/')
-        old_segments.shift
-        length = old_segments.length
-
-        old_segments.reverse.each_with_index do |segment, index|
-          required_segments.each do |required|
-            if segment =~ /#{required}/
-              optional = false
-              break
-            end
-          end
-
-          if optional
-            if segment == ":id" && segments.include?(":action")
-              optional = false
-            elsif segment == ":controller" || segment == ":action" || segment == ":id"
-              # Ignore
-            elsif !(segment =~ /^:\w+$/) &&
-                !(segment =~ /^:\w+\(\.:format\)$/)
-              optional = false
-            elsif segment =~ /^:(\w+)$/
-              if defaults.has_key?($1.to_sym)
-                defaults.delete($1.to_sym) if defaults[$1.to_sym].nil?
-              else
-                optional = false
-              end
-            end
-          end
-
-          if optional && index < length - 1
-            segments.unshift('(/', segment)
-            segments.push(')')
-          elsif optional
-            segments.unshift('/(', segment)
-            segments.push(')')
-          else
-            segments.unshift('/', segment)
-          end
-        end
-
-        segments.join
-      end
-      private :optionalize_trailing_dynamic_segments
-
-      # Creates a named route called "root" for matching the root level request.
-      def root(options = {})
-        if options.is_a?(Symbol)
-          if source_route = @set.named_routes.routes[options]
-            options = source_route.defaults.merge({ :conditions => source_route.conditions })
-          end
-        end
-        named_route("root", '', options)
-      end
-
-      def named_route(name, path, options = {}) #:nodoc:
-        options[:_name] = name
-        connect(path, options)
-      end
-
-      def namespace(name, options = {}, &block)
-        if options[:namespace]
-          with_options({:path_prefix => "#{options.delete(:path_prefix)}/#{name}", :name_prefix => "#{options.delete(:name_prefix)}#{name}_", :namespace => "#{options.delete(:namespace)}#{name}/" }.merge(options), &block)
-        else
-          with_options({:path_prefix => name, :name_prefix => "#{name}_", :namespace => "#{name}/" }.merge(options), &block)
-        end
-      end
-
-      def method_missing(route_name, *args, &proc) #:nodoc:
-        super unless args.length >= 1 && proc.nil?
-        named_route(route_name, *args)
-      end
-
-      INHERITABLE_OPTIONS = :namespace, :shallow
-
-      class Resource #:nodoc:
-        DEFAULT_ACTIONS = :index, :create, :new, :edit, :show, :update, :destroy
-
-        attr_reader :collection_methods, :member_methods, :new_methods
-        attr_reader :path_prefix, :name_prefix, :path_segment
-        attr_reader :plural, :singular
-        attr_reader :options, :defaults
-
-        def initialize(entities, options, defaults)
-          @plural   ||= entities
-          @singular ||= options[:singular] || plural.to_s.singularize
-          @path_segment = options.delete(:as) || @plural
-
-          @options = options
-          @defaults = defaults
-
-          arrange_actions
-          add_default_actions
-          set_allowed_actions
-          set_prefixes
-        end
-
-        def controller
-          @controller ||= "#{options[:namespace]}#{(options[:controller] || plural).to_s}"
-        end
-
-        def requirements(with_id = false)
-          @requirements   ||= @options[:requirements] || {}
-          @id_requirement ||= { :id => @requirements.delete(:id) || /[^#{Routing::SEPARATORS.join}]+/ }
-
-          with_id ? @requirements.merge(@id_requirement) : @requirements
-        end
-
-        def conditions
-          @conditions ||= @options[:conditions] || {}
-        end
-
-        def path
-          @path ||= "#{path_prefix}/#{path_segment}"
-        end
-
-        def new_path
-          new_action   = self.options[:path_names][:new] if self.options[:path_names]
-          new_action ||= self.defaults[:path_names][:new]
-          @new_path  ||= "#{path}/#{new_action}"
-        end
-
-        def shallow_path_prefix
-          @shallow_path_prefix ||= @options[:shallow] ? @options[:namespace].try(:sub, /\/$/, '') : path_prefix
-        end
-
-        def member_path
-          @member_path ||= "#{shallow_path_prefix}/#{path_segment}/:id"
-        end
-
-        def nesting_path_prefix
-          @nesting_path_prefix ||= "#{shallow_path_prefix}/#{path_segment}/:#{singular}_id"
-        end
-
-        def shallow_name_prefix
-          @shallow_name_prefix ||= @options[:shallow] ? @options[:namespace].try(:gsub, /\//, '_') : name_prefix
-        end
-
-        def nesting_name_prefix
-          "#{shallow_name_prefix}#{singular}_"
-        end
-
-        def action_separator
-          @action_separator ||= ActionController::Base.resource_action_separator
-        end
-
-        def uncountable?
-          @singular.to_s == @plural.to_s
-        end
-
-        def has_action?(action)
-          !DEFAULT_ACTIONS.include?(action) || action_allowed?(action)
-        end
-
-        protected
-          def arrange_actions
-            @collection_methods = arrange_actions_by_methods(options.delete(:collection))
-            @member_methods     = arrange_actions_by_methods(options.delete(:member))
-            @new_methods        = arrange_actions_by_methods(options.delete(:new))
-          end
-
-          def add_default_actions
-            add_default_action(member_methods, :get, :edit)
-            add_default_action(new_methods, :get, :new)
-          end
-
-          def set_allowed_actions
-            only, except = @options.values_at(:only, :except)
-            @allowed_actions ||= {}
-
-            if only == :all || except == :none
-              only = nil
-              except = []
-            elsif only == :none || except == :all
-              only = []
-              except = nil
-            end
-
-            if only
-              @allowed_actions[:only] = Array(only).map {|a| a.to_sym }
-            elsif except
-              @allowed_actions[:except] = Array(except).map {|a| a.to_sym }
-            end
-          end
-
-          def action_allowed?(action)
-            only, except = @allowed_actions.values_at(:only, :except)
-            (!only || only.include?(action)) && (!except || !except.include?(action))
-          end
-
-          def set_prefixes
-            @path_prefix = options.delete(:path_prefix)
-            @name_prefix = options.delete(:name_prefix)
-          end
-
-          def arrange_actions_by_methods(actions)
-            (actions || {}).inject({}) do |flipped_hash, (key, value)|
-              (flipped_hash[value] ||= []) << key
-              flipped_hash
-            end
-          end
-
-          def add_default_action(collection, method, action)
-            (collection[method] ||= []).unshift(action)
-          end
-      end
-
-      class SingletonResource < Resource #:nodoc:
-        def initialize(entity, options, defaults)
-          @singular = @plural = entity
-          options[:controller] ||= @singular.to_s.pluralize
-          super
-        end
-
-        alias_method :shallow_path_prefix, :path_prefix
-        alias_method :shallow_name_prefix, :name_prefix
-        alias_method :member_path,         :path
-        alias_method :nesting_path_prefix, :path
-      end
-
-      def resources(*entities, &block)
-        options = entities.extract_options!
-        entities.each { |entity| map_resource(entity, options.dup, &block) }
-      end
-
-      def resource(*entities, &block)
-        options = entities.extract_options!
-        entities.each { |entity| map_singleton_resource(entity, options.dup, &block) }
-      end
-
-      private
-        def map_resource(entities, options = {}, &block)
-          resource = Resource.new(entities, options, :path_names => @set.resources_path_names)
-
-          with_options :controller => resource.controller do |map|
-            map_associations(resource, options)
-
-            if block_given?
-              with_options(options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => resource.nesting_path_prefix, :name_prefix => resource.nesting_name_prefix), &block)
-            end
-
-            map_collection_actions(map, resource)
-            map_default_collection_actions(map, resource)
-            map_new_actions(map, resource)
-            map_member_actions(map, resource)
-          end
-        end
-
-        def map_singleton_resource(entities, options = {}, &block)
-          resource = SingletonResource.new(entities, options, :path_names => @set.resources_path_names)
-
-          with_options :controller => resource.controller do |map|
-            map_associations(resource, options)
-
-            if block_given?
-              with_options(options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => resource.nesting_path_prefix, :name_prefix => resource.nesting_name_prefix), &block)
-            end
-
-            map_collection_actions(map, resource)
-            map_new_actions(map, resource)
-            map_member_actions(map, resource)
-            map_default_singleton_actions(map, resource)
-          end
-        end
-
-        def map_associations(resource, options)
-          map_has_many_associations(resource, options.delete(:has_many), options) if options[:has_many]
-
-          path_prefix = "#{options.delete(:path_prefix)}#{resource.nesting_path_prefix}"
-          name_prefix = "#{options.delete(:name_prefix)}#{resource.nesting_name_prefix}"
-
-          Array(options[:has_one]).each do |association|
-            resource(association, options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => path_prefix, :name_prefix => name_prefix))
-          end
-        end
-
-        def map_has_many_associations(resource, associations, options)
-          case associations
-          when Hash
-            associations.each do |association,has_many|
-              map_has_many_associations(resource, association, options.merge(:has_many => has_many))
-            end
-          when Array
-            associations.each do |association|
-              map_has_many_associations(resource, association, options)
-            end
-          when Symbol, String
-            resources(associations, options.slice(*INHERITABLE_OPTIONS).merge(:path_prefix => resource.nesting_path_prefix, :name_prefix => resource.nesting_name_prefix, :has_many => options[:has_many]))
-          else
-          end
-        end
-
-        def map_collection_actions(map, resource)
-          resource.collection_methods.each do |method, actions|
-            actions.each do |action|
-              [method].flatten.each do |m|
-                action_path = resource.options[:path_names][action] if resource.options[:path_names].is_a?(Hash)
-                action_path ||= action
-
-                map_resource_routes(map, resource, action, "#{resource.path}#{resource.action_separator}#{action_path}", "#{action}_#{resource.name_prefix}#{resource.plural}", m)
-              end
-            end
-          end
-        end
-
-        def map_default_collection_actions(map, resource)
-          index_route_name = "#{resource.name_prefix}#{resource.plural}"
-
-          if resource.uncountable?
-            index_route_name << "_index"
-          end
-
-          map_resource_routes(map, resource, :index, resource.path, index_route_name)
-          map_resource_routes(map, resource, :create, resource.path, index_route_name)
-        end
-
-        def map_default_singleton_actions(map, resource)
-          map_resource_routes(map, resource, :create, resource.path, "#{resource.shallow_name_prefix}#{resource.singular}")
-        end
-
-        def map_new_actions(map, resource)
-          resource.new_methods.each do |method, actions|
-            actions.each do |action|
-              route_path = resource.new_path
-              route_name = "new_#{resource.name_prefix}#{resource.singular}"
-
-              unless action == :new
-                route_path = "#{route_path}#{resource.action_separator}#{action}"
-                route_name = "#{action}_#{route_name}"
-              end
-
-              map_resource_routes(map, resource, action, route_path, route_name, method)
-            end
-          end
-        end
-
-        def map_member_actions(map, resource)
-          resource.member_methods.each do |method, actions|
-            actions.each do |action|
-              [method].flatten.each do |m|
-                action_path = resource.options[:path_names][action] if resource.options[:path_names].is_a?(Hash)
-                action_path ||= @set.resources_path_names[action] || action
-
-                map_resource_routes(map, resource, action, "#{resource.member_path}#{resource.action_separator}#{action_path}", "#{action}_#{resource.shallow_name_prefix}#{resource.singular}", m, { :force_id => true })
-              end
-            end
-          end
-
-          route_path = "#{resource.shallow_name_prefix}#{resource.singular}"
-          map_resource_routes(map, resource, :show, resource.member_path, route_path)
-          map_resource_routes(map, resource, :update, resource.member_path, route_path)
-          map_resource_routes(map, resource, :destroy, resource.member_path, route_path)
-        end
-
-        def map_resource_routes(map, resource, action, route_path, route_name = nil, method = nil, resource_options = {} )
-          if resource.has_action?(action)
-            action_options = action_options_for(action, resource, method, resource_options)
-            formatted_route_path = "#{route_path}.:format"
-
-            if route_name && @set.named_routes[route_name.to_sym].nil?
-              map.named_route(route_name, formatted_route_path, action_options)
-            else
-              map.connect(formatted_route_path, action_options)
-            end
-          end
-        end
-
-        def add_conditions_for(conditions, method)
-          {:conditions => conditions.dup}.tap do |options|
-            options[:conditions][:method] = method unless method == :any
-          end
-        end
-
-        def action_options_for(action, resource, method = nil, resource_options = {})
-          default_options = { :action => action.to_s }
-          require_id = !resource.kind_of?(SingletonResource)
-          force_id = resource_options[:force_id] && !resource.kind_of?(SingletonResource)
-
-          case default_options[:action]
-            when "index", "new"; default_options.merge(add_conditions_for(resource.conditions, method || :get)).merge(resource.requirements)
-            when "create";       default_options.merge(add_conditions_for(resource.conditions, method || :post)).merge(resource.requirements)
-            when "show", "edit"; default_options.merge(add_conditions_for(resource.conditions, method || :get)).merge(resource.requirements(require_id))
-            when "update";       default_options.merge(add_conditions_for(resource.conditions, method || :put)).merge(resource.requirements(require_id))
-            when "destroy";      default_options.merge(add_conditions_for(resource.conditions, method || :delete)).merge(resource.requirements(require_id))
-            else                 default_options.merge(add_conditions_for(resource.conditions, method)).merge(resource.requirements(force_id))
-          end
-        end
-    end
-  end
-end
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index c118c72440..14c424f24b 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -1,6 +1,8 @@
 require 'erb'
 require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/object/blank'
+require 'active_support/inflector'
+require 'action_dispatch/routing/redirection'
 
 module ActionDispatch
   module Routing
@@ -20,27 +22,37 @@ module ActionDispatch
           @app, @constraints, @request = app, constraints, request
         end
 
-        def call(env)
+        def matches?(env)
           req = @request.new(env)
 
           @constraints.each { |constraint|
             if constraint.respond_to?(:matches?) && !constraint.matches?(req)
-              return [ 404, {'X-Cascade' => 'pass'}, [] ]
-            elsif constraint.respond_to?(:call) && !constraint.call(req)
-              return [ 404, {'X-Cascade' => 'pass'}, [] ]
+              return false
+            elsif constraint.respond_to?(:call) && !constraint.call(*constraint_args(constraint, req))
+              return false
             end
           }
 
-          @app.call(env)
+          return true
+        end
+
+        def call(env)
+          matches?(env) ? @app.call(env) : [ 404, {'X-Cascade' => 'pass'}, [] ]
         end
+
+        private
+          def constraint_args(constraint, request)
+            constraint.arity == 1 ? [request] : [request.symbolized_path_parameters, request]
+          end
       end
 
       class Mapping #:nodoc:
         IGNORE_OPTIONS = [:to, :as, :via, :on, :constraints, :defaults, :only, :except, :anchor, :shallow, :shallow_path, :shallow_prefix]
 
-        def initialize(set, scope, args)
-          @set, @scope    = set, scope
-          @path, @options = extract_path_and_options(args)
+        def initialize(set, scope, path, options)
+          @set, @scope = set, scope
+          @options = (@scope[:options] || {}).merge(options)
+          @path = normalize_path(path)
           normalize_options!
         end
 
@@ -49,28 +61,6 @@ module ActionDispatch
         end
 
         private
-          def extract_path_and_options(args)
-            options = args.extract_options!
-
-            if using_to_shorthand?(args, options)
-              path, to = options.find { |name, value| name.is_a?(String) }
-              options.merge!(:to => to).delete(path) if path
-            else
-              path = args.first
-            end
-
-            if path.match(':controller')
-              raise ArgumentError, ":controller segment is not allowed within a namespace block" if @scope[:module]
-
-              # Add a default constraint for :controller path segments that matches namespaced
-              # controllers with default routes like :controller/:action/:id(.:format), e.g:
-              # GET /admin/products/show/1
-              # => { :controller => 'admin/products', :action => 'show', :id => '1' }
-              options.reverse_merge!(:controller => /.+?/)
-            end
-
-            [ normalize_path(path), options ]
-          end
 
           def normalize_options!
             path_without_format = @path.sub(/\(\.:format\)$/, '')
@@ -78,15 +68,21 @@ module ActionDispatch
             if using_match_shorthand?(path_without_format, @options)
               to_shorthand    = @options[:to].blank?
               @options[:to] ||= path_without_format[1..-1].sub(%r{/([^/]*)$}, '#\1')
-              @options[:as] ||= path_without_format[1..-1].gsub("/", "_")
             end
 
             @options.merge!(default_controller_and_action(to_shorthand))
-          end
 
-          # match "account" => "account#index"
-          def using_to_shorthand?(args, options)
-            args.empty? && options.present?
+            requirements.each do |name, requirement|
+              # segment_keys.include?(k.to_s) || k == :controller
+              next unless Regexp === requirement && !constraints[name]
+
+              if requirement.source =~ %r{\A(\\A|\^)|(\\Z|\\z|\$)\Z}
+                raise ArgumentError, "Regexp anchor characters are not allowed in routing requirements: #{requirement.inspect}"
+              end
+              if requirement.multiline?
+                raise ArgumentError, "Regexp multiline option not allowed in routing requirements: #{requirement.inspect}"
+              end
+            end
           end
 
           # match "account/overview"
@@ -95,8 +91,27 @@ module ActionDispatch
           end
 
           def normalize_path(path)
-            raise ArgumentError, "path is required" if @scope[:path].blank? && path.blank?
-            Mapper.normalize_path("#{@scope[:path]}/#{path}")
+            raise ArgumentError, "path is required" if path.blank?
+            path = Mapper.normalize_path(path)
+
+            if path.match(':controller')
+              raise ArgumentError, ":controller segment is not allowed within a namespace block" if @scope[:module]
+
+              # Add a default constraint for :controller path segments that matches namespaced
+              # controllers with default routes like :controller/:action/:id(.:format), e.g:
+              # GET /admin/products/show/1
+              # => { :controller => 'admin/products', :action => 'show', :id => '1' }
+              @options.reverse_merge!(:controller => /.+?/)
+            end
+
+            if @options[:format] == false
+              @options.delete(:format)
+              path
+            elsif path.include?(":format") || path.end_with?('/') || path.match(/^\/?\*/)
+              path
+            else
+              "#{path}(.:format)"
+            end
           end
 
           def app
@@ -142,6 +157,10 @@ module ActionDispatch
                 controller = [@scope[:module], controller].compact.join("/").presence
               end
 
+              if controller.is_a?(String) && controller =~ %r{\A/}
+                raise ArgumentError, "controller name should not start with a slash"
+              end
+
               controller = controller.to_s unless controller.is_a?(Regexp)
               action     = action.to_s     unless action.is_a?(Regexp)
 
@@ -153,21 +172,21 @@ module ActionDispatch
                 raise ArgumentError, "missing :action"
               end
 
-              { :controller => controller, :action => action }.tap do |hash|
-                hash.delete(:controller) if hash[:controller].blank?
-                hash.delete(:action)     if hash[:action].blank?
-              end
+              hash = {}
+              hash[:controller] = controller unless controller.blank?
+              hash[:action]     = action unless action.blank?
+              hash
             end
           end
 
           def blocks
+            block = @scope[:blocks] || []
+
             if @options[:constraints].present? && !@options[:constraints].is_a?(Hash)
-              block = @options[:constraints]
-            else
-              block = nil
+              block << @options[:constraints]
             end
 
-            ((@scope[:blocks] || []) + [ block ]).compact
+            block
           end
 
           def constraints
@@ -176,8 +195,8 @@ module ActionDispatch
 
           def request_method_condition
             if via = @options[:via]
-              via = Array(via).map { |m| m.to_s.upcase }
-              { :request_method => Regexp.union(*via) }
+              list = Array(via).map { |m| m.to_s.dasherize.upcase }
+              { :request_method => list }
             else
               { }
             end
@@ -219,21 +238,165 @@ module ActionDispatch
         path
       end
 
-      module Base
-        def initialize(set) #:nodoc:
-          @set = set
-        end
+      def self.normalize_name(name)
+        normalize_path(name)[1..-1].gsub("/", "_")
+      end
 
+      module Base
+        # You can specify what Rails should route "/" to with the root method:
+        #
+        #   root :to => 'pages#main'
+        #
+        # For options, see +match+, as +root+ uses it internally.
+        #
+        # You should put the root route at the top of <tt>config/routes.rb</tt>,
+        # because this means it will be matched first. As this is the most popular route
+        # of most Rails applications, this is beneficial.
         def root(options = {})
           match '/', options.reverse_merge(:as => :root)
         end
 
-        def match(*args)
-          mapping = Mapping.new(@set, @scope, args).to_route
-          @set.add_route(*mapping)
+        # Matches a url pattern to one or more routes. Any symbols in a pattern
+        # are interpreted as url query parameters and thus available as +params+
+        # in an action:
+        #
+        #   # sets :controller, :action and :id in params
+        #   match ':controller/:action/:id'
+        #
+        # Two of these symbols are special, +:controller+ maps to the controller
+        # and +:action+ to the controller's action. A pattern can also map
+        # wildcard segments (globs) to params:
+        #
+        #   match 'songs/*category/:title' => 'songs#show'
+        #
+        #   # 'songs/rock/classic/stairway-to-heaven' sets
+        #   #  params[:category] = 'rock/classic'
+        #   #  params[:title] = 'stairway-to-heaven'
+        #
+        # When a pattern points to an internal route, the route's +:action+ and
+        # +:controller+ should be set in options or hash shorthand. Examples:
+        #
+        #   match 'photos/:id' => 'photos#show'
+        #   match 'photos/:id', :to => 'photos#show'
+        #   match 'photos/:id', :controller => 'photos', :action => 'show'
+        #
+        # A pattern can also point to a +Rack+ endpoint i.e. anything that
+        # responds to +call+:
+        #
+        #   match 'photos/:id' => lambda {|hash| [200, {}, "Coming soon" }
+        #   match 'photos/:id' => PhotoRackApp
+        #   # Yes, controller actions are just rack endpoints
+        #   match 'photos/:id' => PhotosController.action(:show)
+        #
+        # === Options
+        #
+        # Any options not seen here are passed on as params with the url.
+        #
+        # [:controller]
+        #   The route's controller.
+        #
+        # [:action]
+        #   The route's action.
+        #
+        # [:path]
+        #   The path prefix for the routes.
+        #
+        # [:module]
+        #   The namespace for :controller.
+        #
+        #     match 'path' => 'c#a', :module => 'sekret', :controller => 'posts'
+        #     #=> Sekret::PostsController
+        #
+        #   See <tt>Scoping#namespace</tt> for its scope equivalent.
+        #
+        # [:as]
+        #   The name used to generate routing helpers.
+        #
+        # [:via]
+        #   Allowed HTTP verb(s) for route.
+        #
+        #      match 'path' => 'c#a', :via => :get
+        #      match 'path' => 'c#a', :via => [:get, :post]
+        #
+        # [:to]
+        #   Points to a +Rack+ endpoint. Can be an object that responds to
+        #   +call+ or a string representing a controller's action.
+        #
+        #      match 'path', :to => 'controller#action'
+        #      match 'path', :to => lambda { [200, {}, "Success!"] }
+        #      match 'path', :to => RackApp
+        #
+        # [:on]
+        #   Shorthand for wrapping routes in a specific RESTful context. Valid
+        #   values are :member, :collection, and :new.  Only use within
+        #   <tt>resource(s)</tt> block. For example:
+        #
+        #      resource :bar do
+        #        match 'foo' => 'c#a', :on => :member, :via => [:get, :post]
+        #      end
+        #
+        #   Is equivalent to:
+        #
+        #      resource :bar do
+        #        member do
+        #          match 'foo' => 'c#a', :via => [:get, :post]
+        #        end
+        #      end
+        #
+        # [:constraints]
+        #   Constrains parameters with a hash of regular expressions or an
+        #   object that responds to #matches?
+        #
+        #     match 'path/:id', :constraints => { :id => /[A-Z]\d{5}/ }
+        #
+        #     class Blacklist
+        #       def matches?(request) request.remote_ip == '1.2.3.4' end
+        #     end
+        #     match 'path' => 'c#a', :constraints => Blacklist.new
+        #
+        #   See <tt>Scoping#constraints</tt> for more examples with its scope
+        #   equivalent.
+        #
+        # [:defaults]
+        #   Sets defaults for parameters
+        #
+        #     # Sets params[:format] to 'jpg' by default
+        #     match 'path' => 'c#a', :defaults => { :format => 'jpg' }
+        #
+        #   See <tt>Scoping#defaults</tt> for its scope equivalent.
+        #
+        # [:anchor]
+        #   Boolean to anchor a #match pattern. Default is true. When set to
+        #   false, the pattern matches any request prefixed with the given path.
+        #
+        #     # Matches any request starting with 'path'
+        #     match 'path' => 'c#a', :anchor => false
+        def match(path, options=nil)
+          mapping = Mapping.new(@set, @scope, path, options || {})
+          app, conditions, requirements, defaults, as, anchor = mapping.to_route
+          @set.add_route(app, conditions, requirements, defaults, as, anchor)
           self
         end
 
+        # Mount a Rack-based application to be used within the application.
+        #
+        #   mount SomeRackApp, :at => "some_route"
+        #
+        # Alternatively:
+        #
+        #   mount(SomeRackApp => "some_route")
+        #
+        # For options, see +match+, as +mount+ uses it internally.
+        #
+        # All mounted applications come with routing helpers to access them.
+        # These are named after the class specified, so for the above example
+        # the helper is either +some_rack_app_path+ or +some_rack_app_url+.
+        # To customize this helper's name, use the +:as+ option:
+        #
+        #   mount(SomeRackApp => "some_route", :as => "exciting")
+        #
+        # This will generate the +exciting_path+ and +exciting_url+ helpers
+        # which can be used to navigate to this mounted app.
         def mount(app, options = nil)
           if options
             path = options.delete(:at)
@@ -245,7 +408,11 @@ module ActionDispatch
 
           raise "A rack application must be specified" unless path
 
-          match(path, options.merge(:to => app, :anchor => false))
+          options[:as] ||= app_name(app)
+
+          match(path, options.merge(:to => app, :anchor => false, :format => false))
+
+          define_generate_prefix(app, options[:as])
           self
         end
 
@@ -253,55 +420,83 @@ module ActionDispatch
           @set.default_url_options = options
         end
         alias_method :default_url_options, :default_url_options=
+
+        def with_default_scope(scope, &block)
+          scope(scope) do
+            instance_exec(&block)
+          end
+        end
+
+        private
+          def app_name(app)
+            return unless app.respond_to?(:routes)
+
+            if app.respond_to?(:railtie_name)
+              app.railtie_name
+            else
+              class_name = app.class.is_a?(Class) ? app.name : app.class.name
+              ActiveSupport::Inflector.underscore(class_name).gsub("/", "_")
+            end
+          end
+
+          def define_generate_prefix(app, name)
+            return unless app.respond_to?(:routes) && app.routes.respond_to?(:define_mounted_helper)
+
+            _route = @set.named_routes.routes[name.to_sym]
+            _routes = @set
+            app.routes.define_mounted_helper(name)
+            app.routes.class_eval do
+              define_method :_generate_prefix do |options|
+                prefix_options = options.slice(*_route.segment_keys)
+                # we must actually delete prefix segment keys to avoid passing them to next url_for
+                _route.segment_keys.each { |k| options.delete(k) }
+                _routes.url_helpers.send("#{name}_path", prefix_options)
+              end
+            end
+          end
       end
 
       module HttpHelpers
+        # Define a route that only recognizes HTTP GET.
+        # For supported arguments, see <tt>Base#match</tt>.
+        #
+        # Example:
+        #
+        # get 'bacon', :to => 'food#bacon'
         def get(*args, &block)
           map_method(:get, *args, &block)
         end
 
+        # Define a route that only recognizes HTTP POST.
+        # For supported arguments, see <tt>Base#match</tt>.
+        #
+        # Example:
+        #
+        # post 'bacon', :to => 'food#bacon'
         def post(*args, &block)
           map_method(:post, *args, &block)
         end
 
+        # Define a route that only recognizes HTTP PUT.
+        # For supported arguments, see <tt>Base#match</tt>.
+        #
+        # Example:
+        #
+        # put 'bacon', :to => 'food#bacon'
         def put(*args, &block)
           map_method(:put, *args, &block)
         end
 
+        # Define a route that only recognizes HTTP PUT.
+        # For supported arguments, see <tt>Base#match</tt>.
+        #
+        # Example:
+        #
+        # delete 'broccoli', :to => 'food#broccoli'
         def delete(*args, &block)
           map_method(:delete, *args, &block)
         end
 
-        def redirect(*args, &block)
-          options = args.last.is_a?(Hash) ? args.pop : {}
-
-          path      = args.shift || block
-          path_proc = path.is_a?(Proc) ? path : proc { |params| path % params }
-          status    = options[:status] || 301
-
-          lambda do |env|
-            req = Request.new(env)
-
-            params = [req.symbolized_path_parameters]
-            params << req if path_proc.arity > 1
-
-            uri = URI.parse(path_proc.call(*params))
-            uri.scheme ||= req.scheme
-            uri.host   ||= req.host
-            uri.port   ||= req.port unless req.port == 80
-
-            body = %(<html><body>You are being <a href="#{ERB::Util.h(uri.to_s)}">redirected</a>.</body></html>)
-
-            headers = {
-              'Location' => uri.to_s,
-              'Content-Type' => 'text/html',
-              'Content-Length' => body.length.to_s
-            }
-
-            [ status, headers, [body] ]
-          end
-        end
-
         private
           def map_method(method, *args, &block)
             options = args.extract_options!
@@ -312,28 +507,98 @@ module ActionDispatch
           end
       end
 
+      # You may wish to organize groups of controllers under a namespace.
+      # Most commonly, you might group a number of administrative controllers
+      # under an +admin+ namespace. You would place these controllers under
+      # the app/controllers/admin directory, and you can group them together
+      # in your router:
+      #
+      #   namespace "admin" do
+      #     resources :posts, :comments
+      #   end
+      #
+      # This will create a number of routes for each of the posts and comments
+      # controller. For Admin::PostsController, Rails will create:
+      #
+      #   GET	    /admin/posts
+      #   GET	    /admin/posts/new
+      #   POST	  /admin/posts
+      #   GET	    /admin/posts/1
+      #   GET	    /admin/posts/1/edit
+      #   PUT	    /admin/posts/1
+      #   DELETE  /admin/posts/1
+      #
+      # If you want to route /posts (without the prefix /admin) to
+      # Admin::PostsController, you could use
+      #
+      #   scope :module => "admin" do
+      #     resources :posts
+      #   end
+      #
+      # or, for a single case
+      #
+      #   resources :posts, :module => "admin"
+      #
+      # If you want to route /admin/posts to PostsController
+      # (without the Admin:: module prefix), you could use
+      #
+      #   scope "/admin" do
+      #     resources :posts
+      #   end
+      #
+      # or, for a single case
+      #
+      #   resources :posts, :path => "/admin"
+      #
+      # In each of these cases, the named routes remain the same as if you did
+      # not use scope. In the last case, the following paths map to
+      # PostsController:
+      #
+      #   GET	    /admin/posts
+      #   GET	    /admin/posts/new
+      #   POST	  /admin/posts
+      #   GET	    /admin/posts/1
+      #   GET	    /admin/posts/1/edit
+      #   PUT	    /admin/posts/1
+      #   DELETE  /admin/posts/1
       module Scoping
-        def initialize(*args) #:nodoc:
-          @scope = {}
-          super
-        end
-
+        # Scopes a set of routes to the given default options.
+        #
+        # Take the following route definition as an example:
+        #
+        #   scope :path => ":account_id", :as => "account" do
+        #     resources :projects
+        #   end
+        #
+        # This generates helpers such as +account_projects_path+, just like +resources+ does.
+        # The difference here being that the routes generated are like /rails/projects/2,
+        # rather than /accounts/rails/projects/2.
+        #
+        # === Options
+        #
+        # Takes same options as <tt>Base#match</tt> and <tt>Resources#resources</tt>.
+        #
+        # === Examples
+        #
+        #   # route /posts (without the prefix /admin) to Admin::PostsController
+        #   scope :module => "admin" do
+        #     resources :posts
+        #   end
+        #
+        #   # prefix the posts resource's requests with '/admin'
+        #   scope :path => "/admin" do
+        #     resources :posts
+        #   end
+        #
+        #   # prefix the routing helper name: sekret_posts_path instead of posts_path
+        #   scope :as => "sekret" do
+        #     resources :posts
+        #   end
         def scope(*args)
           options = args.extract_options!
           options = options.dup
 
-          if name_prefix = options.delete(:name_prefix)
-            options[:as] ||= name_prefix
-            ActiveSupport::Deprecation.warn ":name_prefix was deprecated in the new router syntax. Use :as instead.", caller
-          end
-
-          case args.first
-          when String
-            options[:path] = args.first
-          when Symbol
-            options[:controller] = args.first
-          end
-
+          options[:path] = args.first if args.first.is_a?(String)
           recover = {}
 
           options[:constraints] ||= {}
@@ -365,10 +630,57 @@ module ActionDispatch
           @scope[:blocks]  = recover[:block]
         end
 
-        def controller(controller)
-          scope(controller.to_sym) { yield }
+        # Scopes routes to a specific controller
+        #
+        # Example:
+        #   controller "food" do
+        #     match "bacon", :action => "bacon"
+        #   end
+        def controller(controller, options={})
+          options[:controller] = controller
+          scope(options) { yield }
         end
 
+        # Scopes routes to a specific namespace. For example:
+        #
+        #   namespace :admin do
+        #     resources :posts
+        #   end
+        #
+        # This generates the following routes:
+        #
+        #       admin_posts GET    /admin/posts(.:format)          {:action=>"index", :controller=>"admin/posts"}
+        #       admin_posts POST   /admin/posts(.:format)          {:action=>"create", :controller=>"admin/posts"}
+        #    new_admin_post GET    /admin/posts/new(.:format)      {:action=>"new", :controller=>"admin/posts"}
+        #   edit_admin_post GET    /admin/posts/:id/edit(.:format) {:action=>"edit", :controller=>"admin/posts"}
+        #        admin_post GET    /admin/posts/:id(.:format)      {:action=>"show", :controller=>"admin/posts"}
+        #        admin_post PUT    /admin/posts/:id(.:format)      {:action=>"update", :controller=>"admin/posts"}
+        #        admin_post DELETE /admin/posts/:id(.:format)      {:action=>"destroy", :controller=>"admin/posts"}
+        #
+        # === Options
+        #
+        # The +:path+, +:as+, +:module+, +:shallow_path+ and +:shallow_prefix+
+        # options all default to the name of the namespace.
+        #
+        # For options, see <tt>Base#match</tt>. For +:shallow_path+ option, see
+        # <tt>Resources#resources</tt>.
+        #
+        # === Examples
+        #
+        #   # accessible through /sekret/posts rather than /admin/posts
+        #   namespace :admin, :path => "sekret" do
+        #     resources :posts
+        #   end
+        #
+        #   # maps to Sekret::PostsController rather than Admin::PostsController
+        #   namespace :admin, :module => "sekret" do
+        #     resources :posts
+        #   end
+        #
+        #   # generates sekret_posts_path rather than admin_posts_path
+        #   namespace :admin, :as => "sekret" do
+        #     resources :posts
+        #   end
         def namespace(path, options = {})
           path = path.to_s
           options = { :path => path, :as => path, :module => path,
@@ -376,95 +688,178 @@ module ActionDispatch
           scope(options) { yield }
         end
 
+        # === Parameter Restriction
+        # Allows you to constrain the nested routes based on a set of rules.
+        # For instance, in order to change the routes to allow for a dot character in the +id+ parameter:
+        #
+        #   constraints(:id => /\d+\.\d+) do
+        #     resources :posts
+        #   end
+        #
+        # Now routes such as +/posts/1+ will no longer be valid, but +/posts/1.1+ will be.
+        # The +id+ parameter must match the constraint passed in for this example.
+        #
+        # You may use this to also restrict other parameters:
+        #
+        #   resources :posts do
+        #     constraints(:post_id => /\d+\.\d+) do
+        #       resources :comments
+        #     end
+        #
+        # === Restricting based on IP
+        #
+        # Routes can also be constrained to an IP or a certain range of IP addresses:
+        #
+        #   constraints(:ip => /192.168.\d+.\d+/) do
+        #     resources :posts
+        #   end
+        #
+        # Any user connecting from the 192.168.* range will be able to see this resource,
+        # where as any user connecting outside of this range will be told there is no such route.
+        #
+        # === Dynamic request matching
+        #
+        # Requests to routes can be constrained based on specific criteria:
+        #
+        #    constraints(lambda { |req| req.env["HTTP_USER_AGENT"] =~ /iPhone/ }) do
+        #      resources :iphones
+        #    end
+        #
+        # You are able to move this logic out into a class if it is too complex for routes.
+        # This class must have a +matches?+ method defined on it which either returns +true+
+        # if the user should be given access to that route, or +false+ if the user should not.
+        #
+        #    class Iphone
+        #      def self.matches(request)
+        #        request.env["HTTP_USER_AGENT"] =~ /iPhone/
+        #      end
+        #    end
+        #
+        # An expected place for this code would be +lib/constraints+.
+        #
+        # This class is then used like this:
+        #
+        #    constraints(Iphone) do
+        #      resources :iphones
+        #    end
         def constraints(constraints = {})
           scope(:constraints => constraints) { yield }
         end
 
+        # Allows you to set default parameters for a route, such as this:
+        #   defaults :id => 'home' do
+        #     match 'scoped_pages/(:id)', :to => 'pages#show'
+        #   end
+        # Using this, the +:id+ parameter here will default to 'home'.
         def defaults(defaults = {})
           scope(:defaults => defaults) { yield }
         end
 
-        def match(*args)
-          options = args.extract_options!
-
-          options = (@scope[:options] || {}).merge(options)
-
-          if @scope[:as] && !options[:as].blank?
-            options[:as] = "#{@scope[:as]}_#{options[:as]}"
-          elsif @scope[:as] && options[:as] == ""
-            options[:as] = @scope[:as].to_s
-          end
-
-          args.push(options)
-          super(*args)
-        end
-
         private
-          def scope_options
+          def scope_options #:nodoc:
             @scope_options ||= private_methods.grep(/^merge_(.+)_scope$/) { $1.to_sym }
           end
 
-          def merge_path_scope(parent, child)
+          def merge_path_scope(parent, child) #:nodoc:
             Mapper.normalize_path("#{parent}/#{child}")
           end
 
-          def merge_shallow_path_scope(parent, child)
+          def merge_shallow_path_scope(parent, child) #:nodoc:
             Mapper.normalize_path("#{parent}/#{child}")
           end
 
-          def merge_as_scope(parent, child)
+          def merge_as_scope(parent, child) #:nodoc:
             parent ? "#{parent}_#{child}" : child
           end
 
-          def merge_shallow_prefix_scope(parent, child)
+          def merge_shallow_prefix_scope(parent, child) #:nodoc:
             parent ? "#{parent}_#{child}" : child
           end
 
-          def merge_module_scope(parent, child)
+          def merge_module_scope(parent, child) #:nodoc:
             parent ? "#{parent}/#{child}" : child
           end
 
-          def merge_controller_scope(parent, child)
+          def merge_controller_scope(parent, child) #:nodoc:
             child
           end
 
-          def merge_path_names_scope(parent, child)
+          def merge_path_names_scope(parent, child) #:nodoc:
             merge_options_scope(parent, child)
           end
 
-          def merge_constraints_scope(parent, child)
+          def merge_constraints_scope(parent, child) #:nodoc:
             merge_options_scope(parent, child)
           end
 
-          def merge_defaults_scope(parent, child)
+          def merge_defaults_scope(parent, child) #:nodoc:
             merge_options_scope(parent, child)
           end
 
-          def merge_blocks_scope(parent, child)
+          def merge_blocks_scope(parent, child) #:nodoc:
             merged = parent ? parent.dup : []
             merged << child if child
             merged
           end
 
-          def merge_options_scope(parent, child)
+          def merge_options_scope(parent, child) #:nodoc:
             (parent || {}).except(*override_keys(child)).merge(child)
           end
 
-          def merge_shallow_scope(parent, child)
+          def merge_shallow_scope(parent, child) #:nodoc:
             child ? true : false
           end
 
-          def override_keys(child)
+          def override_keys(child) #:nodoc:
             child.key?(:only) || child.key?(:except) ? [:only, :except] : []
           end
       end
 
+      # Resource routing allows you to quickly declare all of the common routes
+      # for a given resourceful controller. Instead of declaring separate routes
+      # for your +index+, +show+, +new+, +edit+, +create+, +update+ and +destroy+
+      # actions, a resourceful route declares them in a single line of code:
+      #
+      #  resources :photos
+      #
+      # Sometimes, you have a resource that clients always look up without
+      # referencing an ID. A common example, /profile always shows the profile of
+      # the currently logged in user. In this case, you can use a singular resource
+      # to map /profile (rather than /profile/:id) to the show action.
+      #
+      #  resource :profile
+      #
+      # It's common to have resources that are logically children of other
+      # resources:
+      #
+      #   resources :magazines do
+      #     resources :ads
+      #   end
+      #
+      # You may wish to organize groups of controllers under a namespace. Most
+      # commonly, you might group a number of administrative controllers under
+      # an +admin+ namespace. You would place these controllers under the
+      # app/controllers/admin directory, and you can group them together in your
+      # router:
+      #
+      #   namespace "admin" do
+      #     resources :posts, :comments
+      #   end
+      #
+      # By default the :id parameter doesn't accept dots. If you need to
+      # use dots as part of the :id parameter add a constraint which
+      # overrides this restriction, e.g:
+      #
+      #   resources :articles, :id => /[^\/]+/
+      #
+      # This allows any character other than a slash as part of your :id.
+      #
       module Resources
         # CANONICAL_ACTIONS holds all actions that does not need a prefix or
         # a path appended since they fit properly in their scope level.
-        VALID_ON_OPTIONS = [:new, :collection, :member]
-        CANONICAL_ACTIONS = [:index, :create, :new, :show, :update, :destroy]
-        RESOURCE_OPTIONS = [:as, :controller, :path, :only, :except]
+        VALID_ON_OPTIONS  = [:new, :collection, :member]
+        RESOURCE_OPTIONS  = [:as, :controller, :path, :only, :except]
+        CANONICAL_ACTIONS = %w(index create new show update destroy)
 
         class Resource #:nodoc:
           DEFAULT_ACTIONS = [:index, :create, :new, :show, :update, :destroy, :edit]
@@ -473,7 +868,7 @@ module ActionDispatch
 
           def initialize(entities, options = {})
             @name       = entities.to_s
-            @path       = options.delete(:path) || @name
+            @path       = (options.delete(:path) || @name).to_s
             @controller = (options.delete(:controller) || @name).to_s
             @as         = options.delete(:as)
             @options    = options
@@ -498,18 +893,17 @@ module ActionDispatch
           end
 
           def plural
-            name.to_s.pluralize
+            @plural ||= name.to_s
           end
 
           def singular
-            name.to_s.singularize
+            @singular ||= name.to_s.singularize
           end
 
-          def member_name
-            singular
-          end
+          alias :member_name :singular
 
-          # Checks for uncountable plurals, and appends "_index" if they're.
+          # Checks for uncountable plurals, and appends "_index" if the plural 
+          # and singular form are the same.
           def collection_name
             singular == plural ? "#{plural}_index" : plural
           end
@@ -518,9 +912,7 @@ module ActionDispatch
             { :controller => controller }
           end
 
-          def collection_scope
-            path
-          end
+          alias :collection_scope :path
 
           def member_scope
             "#{path}/:id"
@@ -540,33 +932,54 @@ module ActionDispatch
           DEFAULT_ACTIONS = [:show, :create, :update, :destroy, :new, :edit]
 
           def initialize(entities, options)
+            @as         = nil
             @name       = entities.to_s
-            @path       = options.delete(:path) || @name
+            @path       = (options.delete(:path) || @name).to_s
             @controller = (options.delete(:controller) || plural).to_s
             @as         = options.delete(:as)
             @options    = options
           end
 
-          def member_name
-            name
+          def plural
+            @plural ||= name.to_s.pluralize
           end
-          alias :collection_name :member_name
 
-          def member_scope
-            path
+          def singular
+            @singular ||= name.to_s
           end
-          alias :nested_scope :member_scope
-        end
 
-        def initialize(*args) #:nodoc:
-          super
-          @scope[:path_names] = @set.resources_path_names
+          alias :member_name :singular
+          alias :collection_name :singular
+
+          alias :member_scope :path
+          alias :nested_scope :path
         end
 
         def resources_path_names(options)
           @scope[:path_names].merge!(options)
         end
 
+        # Sometimes, you have a resource that clients always look up without
+        # referencing an ID. A common example, /profile always shows the
+        # profile of the currently logged in user. In this case, you can use
+        # a singular resource to map /profile (rather than /profile/:id) to
+        # the show action:
+        #
+        #   resource :geocoder
+        #
+        # creates six different routes in your application, all mapping to
+        # the GeoCoders controller (note that the controller is named after
+        # the plural):
+        #
+        #   GET     /geocoder/new
+        #   POST    /geocoder
+        #   GET     /geocoder
+        #   GET     /geocoder/edit
+        #   PUT     /geocoder
+        #   DELETE  /geocoder
+        #
+        # === Options
+        # Takes same options as +resources+.
         def resource(*resources, &block)
           options = resources.extract_options!
 
@@ -577,25 +990,121 @@ module ActionDispatch
           resource_scope(SingletonResource.new(resources.pop, options)) do
             yield if block_given?
 
-            collection_scope do
+            collection do
               post :create
             end if parent_resource.actions.include?(:create)
 
-            new_scope do
+            new do
               get :new
             end if parent_resource.actions.include?(:new)
 
-            member_scope  do
+            member do
+              get    :edit if parent_resource.actions.include?(:edit)
               get    :show if parent_resource.actions.include?(:show)
               put    :update if parent_resource.actions.include?(:update)
               delete :destroy if parent_resource.actions.include?(:destroy)
-              get    :edit if parent_resource.actions.include?(:edit)
             end
           end
 
           self
         end
 
+        # In Rails, a resourceful route provides a mapping between HTTP verbs
+        # and URLs and controller actions. By convention, each action also maps
+        # to particular CRUD operations in a database. A single entry in the
+        # routing file, such as
+        #
+        #   resources :photos
+        #
+        # creates seven different routes in your application, all mapping to
+        # the Photos controller:
+        #
+        #   GET     /photos/new
+        #   POST    /photos
+        #   GET     /photos/:id
+        #   GET     /photos/:id/edit
+        #   PUT     /photos/:id
+        #   DELETE  /photos/:id
+        #
+        # Resources can also be nested infinitely by using this block syntax:
+        #
+        #   resources :photos do
+        #     resources :comments
+        #   end
+        #
+        # This generates the following comments routes:
+        #
+        #   GET     /photos/:id/comments/new
+        #   POST    /photos/:id/comments
+        #   GET     /photos/:id/comments/:id
+        #   GET     /photos/:id/comments/:id/edit
+        #   PUT     /photos/:id/comments/:id
+        #   DELETE  /photos/:id/comments/:id
+        #
+        # === Options
+        # Takes same options as <tt>Base#match</tt> as well as:
+        #
+        # [:path_names]
+        #   Allows you to change the paths of the seven default actions.
+        #   Paths not specified are not changed.
+        #
+        #     resources :posts, :path_names => { :new => "brand_new" }
+        #
+        #   The above example will now change /posts/new to /posts/brand_new
+        #
+        # [:only]
+        #   Only generate routes for the given actions.
+        #
+        #     resources :cows, :only => :show
+        #     resources :cows, :only => [:show, :index]
+        #
+        # [:except]
+        #   Generate all routes except for the given actions.
+        #
+        #     resources :cows, :except => :show
+        #     resources :cows, :except => [:show, :index]
+        #
+        # [:shallow]
+        #   Generates shallow routes for nested resource(s). When placed on a parent resource,
+        #   generates shallow routes for all nested resources.
+        #
+        #     resources :posts, :shallow => true do
+        #       resources :comments
+        #     end
+        #
+        #   Is the same as:
+        #
+        #     resources :posts do
+        #       resources :comments
+        #     end
+        #     resources :comments
+        #
+        # [:shallow_path]
+        #   Prefixes nested shallow routes with the specified path.
+        #
+        #   scope :shallow_path => "sekret" do
+        #     resources :posts do
+        #       resources :comments, :shallow => true
+        #     end
+        #   end
+        #
+        #   The +comments+ resource here will have the following routes generated for it:
+        #
+        #     post_comments    GET    /sekret/posts/:post_id/comments(.:format)
+        #     post_comments    POST   /sekret/posts/:post_id/comments(.:format)
+        #     new_post_comment GET    /sekret/posts/:post_id/comments/new(.:format)
+        #     edit_comment     GET    /sekret/comments/:id/edit(.:format)
+        #     comment          GET    /sekret/comments/:id(.:format)
+        #     comment          PUT    /sekret/comments/:id(.:format)
+        #     comment          DELETE /sekret/comments/:id(.:format)
+        #
+        # === Examples
+        #
+        #   # routes call Admin::PostsController
+        #   resources :posts, :module => "admin"
+        #
+        #   # resource actions are at /admin/posts.
+        #   resources :posts, :path => "admin"
         def resources(*resources, &block)
           options = resources.extract_options!
 
@@ -606,43 +1115,70 @@ module ActionDispatch
           resource_scope(Resource.new(resources.pop, options)) do
             yield if block_given?
 
-            collection_scope do
+            collection do
               get  :index if parent_resource.actions.include?(:index)
               post :create if parent_resource.actions.include?(:create)
             end
 
-            new_scope do
+            new do
               get :new
             end if parent_resource.actions.include?(:new)
 
-            member_scope  do
+            member do
+              get    :edit if parent_resource.actions.include?(:edit)
               get    :show if parent_resource.actions.include?(:show)
               put    :update if parent_resource.actions.include?(:update)
               delete :destroy if parent_resource.actions.include?(:destroy)
-              get    :edit if parent_resource.actions.include?(:edit)
             end
           end
 
           self
         end
 
+        # To add a route to the collection:
+        #
+        #   resources :photos do
+        #     collection do
+        #       get 'search'
+        #     end
+        #   end
+        #
+        # This will enable Rails to recognize paths such as <tt>/photos/search</tt>
+        # with GET, and route to the search action of PhotosController. It will also
+        # create the <tt>search_photos_url</tt> and <tt>search_photos_path</tt>
+        # route helpers.
         def collection
-          unless @scope[:scope_level] == :resources
-            raise ArgumentError, "can't use collection outside resources scope"
+          unless resource_scope?
+            raise ArgumentError, "can't use collection outside resource(s) scope"
           end
 
-          collection_scope do
-            yield
+          with_scope_level(:collection) do
+            scope(parent_resource.collection_scope) do
+              yield
+            end
           end
         end
 
+        # To add a member route, add a member block into the resource block:
+        #
+        #   resources :photos do
+        #     member do
+        #       get 'preview'
+        #     end
+        #   end
+        #
+        # This will recognize <tt>/photos/1/preview</tt> with GET, and route to the
+        # preview action of PhotosController. It will also create the
+        # <tt>preview_photo_url</tt> and <tt>preview_photo_path</tt> helpers.
         def member
           unless resource_scope?
             raise ArgumentError, "can't use member outside resource(s) scope"
           end
 
-          member_scope do
-            yield
+          with_scope_level(:member) do
+            scope(parent_resource.member_scope) do
+              yield
+            end
           end
         end
 
@@ -651,8 +1187,10 @@ module ActionDispatch
             raise ArgumentError, "can't use new outside resource(s) scope"
           end
 
-          new_scope do
-            yield
+          with_scope_level(:new) do
+            scope(parent_resource.new_scope(action_path(:new))) do
+              yield
+            end
           end
         end
 
@@ -678,6 +1216,7 @@ module ActionDispatch
           end
         end
 
+        # See ActionDispatch::Routing::Mapper::Scoping#namespace
         def namespace(path, options = {})
           if resource_scope?
             nested { super }
@@ -687,7 +1226,7 @@ module ActionDispatch
         end
 
         def shallow
-          scope(:shallow => true) do
+          scope(:shallow => true, :shallow_path => @scope[:path]) do
             yield
           end
         end
@@ -713,46 +1252,36 @@ module ActionDispatch
             raise ArgumentError, "Unknown scope #{on.inspect} given to :on"
           end
 
-          if @scope[:scope_level] == :resource
+          if @scope[:scope_level] == :resources
+            args.push(options)
+            return nested { match(*args) }
+          elsif @scope[:scope_level] == :resource
             args.push(options)
             return member { match(*args) }
           end
 
-          path = options.delete(:path)
           action = args.first
+          path = path_for_action(action, options.delete(:path))
 
-          if action.is_a?(Symbol)
-            path = path_for_action(action, path)
-            options[:to] ||= action
-            options[:as]   = name_for_action(action, options[:as])
-
-            with_exclusive_scope do
-              return super(path, options)
-            end
-          elsif resource_method_scope?
-            path = path_for_custom_action
-            options[:as] = name_for_action(options[:as]) if options[:as]
-            args.push(options)
-
-            with_exclusive_scope do
-              scope(path) do
-                return super
-              end
-            end
+          if action.to_s =~ /^[\w\/]+$/
+            options[:action] ||= action unless action.to_s.include?("/")
+          else
+            action = nil
           end
 
-          if resource_scope?
-            raise ArgumentError, "can't define route directly in resource(s) scope"
+          if options.key?(:as) && !options[:as]
+            options.delete(:as)
+          else
+            options[:as] = name_for_action(options[:as], action)
           end
 
-          args.push(options)
-          super
+          super(path, options)
         end
 
         def root(options={})
           if @scope[:scope_level] == :resources
-            with_scope_level(:nested) do
-              scope(parent_resource.path, :as => parent_resource.collection_name) do
+            with_scope_level(:root) do
+              scope(parent_resource.path) do
                 super(options)
               end
             end
@@ -767,12 +1296,21 @@ module ActionDispatch
             @scope[:scope_level_resource]
           end
 
-          def apply_common_behavior_for(method, resources, options, &block)
+          def apply_common_behavior_for(method, resources, options, &block) #:nodoc:
             if resources.length > 1
               resources.each { |r| send(method, r, options, &block) }
               return true
             end
 
+            if resource_scope?
+              nested { send(method, resources.pop, options, &block) }
+              return true
+            end
+
+            options.keys.each do |k|
+              (options[:constraints] ||= {})[k] = options.delete(k) if options[k].is_a?(Regexp)
+            end
+
             scope_options = options.slice!(*RESOURCE_OPTIONS)
             unless scope_options.empty?
               scope(scope_options) do
@@ -785,33 +1323,26 @@ module ActionDispatch
               options.merge!(scope_action_options) if scope_action_options?
             end
 
-            if resource_scope?
-              nested do
-                send(method, resources.pop, options, &block)
-              end
-              return true
-            end
-
             false
           end
 
-          def action_options?(options)
+          def action_options?(options) #:nodoc:
             options[:only] || options[:except]
           end
 
-          def scope_action_options?
+          def scope_action_options? #:nodoc:
             @scope[:options].is_a?(Hash) && (@scope[:options][:only] || @scope[:options][:except])
           end
 
-          def scope_action_options
+          def scope_action_options #:nodoc:
             @scope[:options].slice(:only, :except)
           end
 
-          def resource_scope?
+          def resource_scope? #:nodoc:
             [:resource, :resources].include?(@scope[:scope_level])
           end
 
-          def resource_method_scope?
+          def resource_method_scope? #:nodoc:
             [:collection, :member, :new].include?(@scope[:scope_level])
           end
 
@@ -837,7 +1368,7 @@ module ActionDispatch
             @scope[:scope_level_resource] = old_resource
           end
 
-          def resource_scope(resource)
+          def resource_scope(resource) #:nodoc:
             with_scope_level(resource.is_a?(SingletonResource) ? :resource : :resources, resource) do
               scope(parent_resource.resource_scope) do
                 yield
@@ -845,116 +1376,108 @@ module ActionDispatch
             end
           end
 
-          def new_scope
-            with_scope_level(:new) do
-              scope(parent_resource.new_scope(action_path(:new))) do
-                yield
-              end
-            end
-          end
-
-          def collection_scope
-            with_scope_level(:collection) do
-              scope(parent_resource.collection_scope) do
-                yield
-              end
-            end
-          end
-
-          def member_scope
-            with_scope_level(:member) do
-              scope(parent_resource.member_scope) do
-                yield
-              end
-            end
-          end
-
-          def nested_options
+          def nested_options #:nodoc:
             {}.tap do |options|
               options[:as] = parent_resource.member_name
               options[:constraints] = { "#{parent_resource.singular}_id".to_sym => id_constraint } if id_constraint?
             end
           end
 
-          def id_constraint?
-            @scope[:id].is_a?(Regexp) || (@scope[:constraints] && @scope[:constraints][:id].is_a?(Regexp))
+          def id_constraint? #:nodoc:
+            @scope[:constraints] && @scope[:constraints][:id].is_a?(Regexp)
           end
 
-          def id_constraint
-            @scope[:id] || @scope[:constraints][:id]
+          def id_constraint #:nodoc:
+            @scope[:constraints][:id]
           end
 
-          def canonical_action?(action, flag)
-            flag && CANONICAL_ACTIONS.include?(action)
+          def canonical_action?(action, flag) #:nodoc:
+            flag && resource_method_scope? && CANONICAL_ACTIONS.include?(action.to_s)
           end
 
-          def shallow_scoping?
+          def shallow_scoping? #:nodoc:
             shallow? && @scope[:scope_level] == :member
           end
 
-          def path_for_action(action, path)
+          def path_for_action(action, path) #:nodoc:
             prefix = shallow_scoping? ?
               "#{@scope[:shallow_path]}/#{parent_resource.path}/:id" : @scope[:path]
 
-            if canonical_action?(action, path.blank?)
-              "#{prefix}(.:format)"
-            else
-              "#{prefix}/#{action_path(action, path)}(.:format)"
-            end
-          end
-
-          def path_for_custom_action
-            if shallow_scoping?
-              "#{@scope[:shallow_path]}/#{parent_resource.path}/:id"
+            path = if canonical_action?(action, path.blank?)
+              prefix.to_s
             else
-              @scope[:path]
+              "#{prefix}/#{action_path(action, path)}"
             end
           end
 
-          def action_path(name, path = nil)
+          def action_path(name, path = nil) #:nodoc:
             path || @scope[:path_names][name.to_sym] || name.to_s
           end
 
-          def prefix_name_for_action(action, as)
-            if as.present?
-              "#{as}_"
-            elsif as
-              ""
+          def prefix_name_for_action(as, action) #:nodoc:
+            if as
+              as.to_s
             elsif !canonical_action?(action, @scope[:scope_level])
-              "#{action}_"
+              action.to_s
             end
           end
 
-          def name_for_action(action, as=nil)
-            prefix = prefix_name_for_action(action, as)
+          def name_for_action(as, action) #:nodoc:
+            prefix = prefix_name_for_action(as, action)
+            prefix = Mapper.normalize_name(prefix) if prefix
             name_prefix = @scope[:as]
 
             if parent_resource
+              return nil if as.nil? && action.nil?
+
               collection_name = parent_resource.collection_name
               member_name = parent_resource.member_name
-              name_prefix = "#{name_prefix}_" if name_prefix.present?
             end
 
-            case @scope[:scope_level]
+            name = case @scope[:scope_level]
+            when :nested
+              [name_prefix, prefix]
             when :collection
-              "#{prefix}#{name_prefix}#{collection_name}"
+              [prefix, name_prefix, collection_name]
             when :new
-              "#{prefix}new_#{name_prefix}#{member_name}"
+              [prefix, :new, name_prefix, member_name]
+            when :member
+              [prefix, shallow_scoping? ? @scope[:shallow_prefix] : name_prefix, member_name]
+            when :root
+              [name_prefix, collection_name, prefix]
             else
-              if shallow_scoping?
-                shallow_prefix = "#{@scope[:shallow_prefix]}_" if @scope[:shallow_prefix].present?
-                "#{prefix}#{shallow_prefix}#{member_name}"
-              else
-                "#{prefix}#{name_prefix}#{member_name}"
-              end
+              [name_prefix, member_name, prefix]
             end
+
+            candidate = name.select(&:present?).join("_").presence
+            candidate unless as.nil? && @set.routes.find { |r| r.name == candidate }
+          end
+      end
+
+      module Shorthand #:nodoc:
+        def match(*args)
+          if args.size == 1 && args.last.is_a?(Hash)
+            options  = args.pop
+            path, to = options.find { |name, value| name.is_a?(String) }
+            options.merge!(:to => to).delete(path)
+            super(path, options)
+          else
+            super
           end
+        end
+      end
+
+      def initialize(set) #:nodoc:
+        @set = set
+        @scope = { :path_names => @set.resources_path_names }
       end
 
       include Base
       include HttpHelpers
+      include Redirection
       include Scoping
       include Resources
+      include Shorthand
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/routing/polymorphic_routes.rb b/actionpack/lib/action_dispatch/routing/polymorphic_routes.rb
index 31dba835ac..82c4fadb50 100644
--- a/actionpack/lib/action_dispatch/routing/polymorphic_routes.rb
+++ b/actionpack/lib/action_dispatch/routing/polymorphic_routes.rb
@@ -17,7 +17,7 @@ module ActionDispatch
     #
     # == Usage within the framework
     #
-    # Polymorphic URL helpers are used in a number of places throughout the Rails framework:
+    # Polymorphic URL helpers are used in a number of places throughout the \Rails framework:
     #
     # * <tt>url_for</tt>, so you can use it with a record as the argument, e.g.
     #   <tt>url_for(@article)</tt>;
@@ -42,6 +42,18 @@ module ActionDispatch
     #
     #   edit_polymorphic_path(@post)              # => "/posts/1/edit"
     #   polymorphic_path(@post, :format => :pdf)  # => "/posts/1.pdf"
+    #
+    # == Using with mounted engines
+    #
+    # If you use mounted engine, there is a possibility that you will need to use
+    # polymorphic_url pointing at engine's routes. To do that, just pass proxy used
+    # to reach engine's routes as a first argument:
+    #
+    # For example:
+    #
+    # polymorphic_url([blog, @post])  # it will call blog.post_path(@post)
+    # form_for([blog, @post])         # => "/blog/posts/1
+    #
     module PolymorphicRoutes
       # Constructs a call to a named RESTful route for the given record and returns the
       # resulting URL string. For example:
@@ -78,19 +90,20 @@ module ActionDispatch
       def polymorphic_url(record_or_hash_or_array, options = {})
         if record_or_hash_or_array.kind_of?(Array)
           record_or_hash_or_array = record_or_hash_or_array.compact
+          if record_or_hash_or_array.first.is_a?(ActionDispatch::Routing::RoutesProxy)
+            proxy = record_or_hash_or_array.shift
+          end
           record_or_hash_or_array = record_or_hash_or_array[0] if record_or_hash_or_array.size == 1
         end
 
         record = extract_record(record_or_hash_or_array)
         record = record.to_model if record.respond_to?(:to_model)
 
-        args = case record_or_hash_or_array
-          when Hash;  [ record_or_hash_or_array ]
-          when Array; record_or_hash_or_array.dup
-          else        [ record_or_hash_or_array ]
-        end
+        args = Array === record_or_hash_or_array ?
+          record_or_hash_or_array.dup :
+          [ record_or_hash_or_array ]
 
-        inflection = if options[:action].to_s == "new"
+        inflection = if options[:action] && options[:action].to_s == "new"
           args.pop
           :singular
         elsif (record.respond_to?(:persisted?) && !record.persisted?)
@@ -111,7 +124,14 @@ module ActionDispatch
           args.last.kind_of?(Hash) ? args.last.merge!(url_options) : args << url_options
         end
 
-        send(named_route, *args)
+        if proxy
+          proxy.send(named_route, *args)
+        else
+          # we need to use url_for, because polymorphic_url can be used in context of other than
+          # current routes (e.g. engine's routes). As named routes from engine are not included
+          # calling engine's named route directly would fail.
+          url_for _routes.url_helpers.__send__("hash_for_#{named_route}", *args)
+        end
       end
 
       # Returns the path component of a URL for the given record. It uses
@@ -146,31 +166,31 @@ module ActionDispatch
         end
 
         def build_named_route_call(records, inflection, options = {})
-          unless records.is_a?(Array)
-            record = extract_record(records)
-            route  = ''
-          else
+          if records.is_a?(Array)
             record = records.pop
-            route = records.inject("") do |string, parent|
+            route = records.map do |parent|
               if parent.is_a?(Symbol) || parent.is_a?(String)
-                string << "#{parent}_"
+                parent
               else
-                string << ActiveModel::Naming.plural(parent).singularize
-                string << "_"
+                ActiveModel::Naming.route_key(parent).singularize
               end
             end
+          else
+            record = extract_record(records)
+            route  = []
           end
 
           if record.is_a?(Symbol) || record.is_a?(String)
-            route << "#{record}_"
+            route << record
           else
-            route << ActiveModel::Naming.plural(record)
-            route = route.singularize if inflection == :singular
-            route << "_"
-            route << "index_" if ActiveModel::Naming.uncountable?(record) && inflection == :plural
+            route << ActiveModel::Naming.route_key(record)
+            route = [route.join("_").singularize] if inflection == :singular
+            route << "index" if ActiveModel::Naming.uncountable?(record) && inflection == :plural
           end
 
-          action_prefix(options) + route + routing_type(options).to_s
+          route << routing_type(options)
+
+          action_prefix(options) + route.join("_")
         end
 
         def extract_record(record_or_hash_or_array)
diff --git a/actionpack/lib/action_dispatch/routing/redirection.rb b/actionpack/lib/action_dispatch/routing/redirection.rb
new file mode 100644
index 0000000000..804991ad5f
--- /dev/null
+++ b/actionpack/lib/action_dispatch/routing/redirection.rb
@@ -0,0 +1,110 @@
+require 'action_dispatch/http/request'
+
+module ActionDispatch
+  module Routing
+    module Redirection
+
+      # Redirect any path to another path:
+      #
+      #   match "/stories" => redirect("/posts")
+      #
+      # You can also use interpolation in the supplied redirect argument:
+      #
+      #   match 'docs/:article', :to => redirect('/wiki/%{article}')
+      #
+      # Alternatively you can use one of the other syntaxes:
+      #
+      # The block version of redirect allows for the easy encapsulation of any logic associated with
+      # the redirect in question. Either the params and request are supplied as arguments, or just
+      # params, depending of how many arguments your block accepts. A string is required as a
+      # return value.
+      #
+      #   match 'jokes/:number', :to => redirect do |params, request|
+      #     path = (params[:number].to_i.even? ? "/wheres-the-beef" : "/i-love-lamp")
+      #     "http://#{request.host_with_port}/#{path}"
+      #   end
+      #
+      # The options version of redirect allows you to supply only the parts of the url which need
+      # to change, it also supports interpolation of the path similar to the first example.
+      #
+      #   match 'stores/:name',       :to => redirect(:subdomain => 'stores', :path => '/%{name}')
+      #   match 'stores/:name(*all)', :to => redirect(:subdomain => 'stores', :path => '/%{name}%{all}')
+      #
+      # Finally, an object which responds to call can be supplied to redirect, allowing you to reuse
+      # common redirect routes. The call method must accept two arguments, params and request, and return
+      # a string.
+      #
+      #   match 'accounts/:name' => redirect(SubdomainRedirector.new('api'))
+      #
+      def redirect(*args, &block)
+        options = args.last.is_a?(Hash) ? args.pop : {}
+        status  = options.delete(:status) || 301
+
+        path = args.shift
+
+        path_proc = if path.is_a?(String)
+          proc { |params| (params.empty? || !path.match(/%\{\w*\}/)) ? path : (path % params) }
+        elsif options.any?
+          options_proc(options)
+        elsif path.respond_to?(:call)
+          proc { |params, request| path.call(params, request) }
+        elsif block
+          block
+        else
+          raise ArgumentError, "redirection argument not supported"
+        end
+
+        redirection_proc(status, path_proc)
+      end
+
+      private
+
+        def options_proc(options)
+          proc do |params, request|
+            path = if options[:path].nil?
+              request.path
+            elsif params.empty? || !options[:path].match(/%\{\w*\}/)
+              options.delete(:path)
+            else
+              (options.delete(:path) % params)
+            end
+
+            default_options = {
+              :protocol => request.protocol,
+              :host => request.host,
+              :port => request.optional_port,
+              :path => path,
+              :params => request.query_parameters
+            }
+
+            ActionDispatch::Http::URL.url_for(options.reverse_merge(default_options))
+          end
+        end
+
+        def redirection_proc(status, path_proc)
+          lambda do |env|
+            req = Request.new(env)
+
+            params = [req.symbolized_path_parameters]
+            params << req if path_proc.arity > 1
+
+            uri = URI.parse(path_proc.call(*params))
+            uri.scheme ||= req.scheme
+            uri.host   ||= req.host
+            uri.port   ||= req.port unless req.standard_port?
+
+            body = %(<html><body>You are being <a href="#{ERB::Util.h(uri.to_s)}">redirected</a>.</body></html>)
+
+            headers = {
+              'Location' => uri.to_s,
+              'Content-Type' => 'text/html',
+              'Content-Length' => body.length.to_s
+            }
+
+            [ status, headers, [body] ]
+          end
+        end
+
+    end
+  end
+end
\ No newline at end of file
diff --git a/actionpack/lib/action_dispatch/routing/route.rb b/actionpack/lib/action_dispatch/routing/route.rb
index aefebf8f80..a049510182 100644
--- a/actionpack/lib/action_dispatch/routing/route.rb
+++ b/actionpack/lib/action_dispatch/routing/route.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/module/deprecation'
+
 module ActionDispatch
   module Routing
     class Route #:nodoc:
@@ -10,6 +12,8 @@ module ActionDispatch
         @defaults = defaults
         @name = name
 
+        # FIXME: we should not be doing this much work in a constructor.
+
         @requirements = requirements.merge(defaults)
         @requirements.delete(:controller) if @requirements[:controller].is_a?(Regexp)
         @requirements.delete_if { |k, v|
@@ -21,24 +25,22 @@ module ActionDispatch
           conditions[:path_info] = ::Rack::Mount::Strexp.compile(path, requirements, SEPARATORS, anchor)
         end
 
-        @conditions = conditions.inject({}) { |h, (k, v)|
-          h[k] = Rack::Mount::RegexpWithNamedGroups.new(v)
-          h
-        }
+        @verbs = conditions[:request_method] || []
 
+        @conditions = conditions.dup
+
+        # Rack-Mount requires that :request_method be a regular expression.
+        # :request_method represents the HTTP verb that matches this route.
+        #
+        # Here we munge values before they get sent on to rack-mount.
+        @conditions[:request_method] = %r[^#{verb}$] unless @verbs.empty?
+        @conditions[:path_info] = Rack::Mount::RegexpWithNamedGroups.new(@conditions[:path_info]) if @conditions[:path_info]
         @conditions.delete_if{ |k,v| k != :path_info && !valid_condition?(k) }
         @requirements.delete_if{ |k,v| !valid_condition?(k) }
       end
 
       def verb
-        if method = conditions[:request_method]
-          case method
-          when Regexp
-            method.source.upcase
-          else
-            method.to_s.upcase
-          end
-        end
+        @verbs.join '|'
       end
 
       def segment_keys
@@ -48,6 +50,7 @@ module ActionDispatch
       def to_a
         [@app, @conditions, @defaults, @name]
       end
+      deprecate :to_a
 
       def to_s
         @to_s ||= begin
diff --git a/actionpack/lib/action_dispatch/routing/route_set.rb b/actionpack/lib/action_dispatch/routing/route_set.rb
index d23b580d97..b28f6c2297 100644
--- a/actionpack/lib/action_dispatch/routing/route_set.rb
+++ b/actionpack/lib/action_dispatch/routing/route_set.rb
@@ -1,7 +1,8 @@
 require 'rack/mount'
 require 'forwardable'
+require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/object/to_query'
-require 'action_dispatch/routing/deprecated_mapper'
+require 'active_support/core_ext/hash/slice'
 
 module ActionDispatch
   module Routing
@@ -50,12 +51,13 @@ module ActionDispatch
       private
 
         def controller_reference(controller_param)
+          controller_name = "#{controller_param.camelize}Controller"
+
           unless controller = @controllers[controller_param]
-            controller_name = "#{controller_param.camelize}Controller"
             controller = @controllers[controller_param] =
-              ActiveSupport::Dependencies.ref(controller_name)
+              ActiveSupport::Dependencies.reference(controller_name)
           end
-          controller.get
+          controller.get(controller_name)
         end
 
         def dispatch(controller, action, env)
@@ -67,7 +69,7 @@ module ActionDispatch
         end
 
         def split_glob_param!(params)
-          params[@glob_param] = params[@glob_param].split('/').map { |v| URI.unescape(v) }
+          params[@glob_param] = params[@glob_param].split('/').map { |v| URI.parser.unescape(v) }
         end
       end
 
@@ -158,10 +160,18 @@ module ActionDispatch
 
             # We use module_eval to avoid leaks
             @module.module_eval <<-END_EVAL, __FILE__, __LINE__ + 1
-              def #{selector}(options = nil)                                      # def hash_for_users_url(options = nil)
-                options ? #{options.inspect}.merge(options) : #{options.inspect}  #   options ? {:only_path=>false}.merge(options) : {:only_path=>false}
-              end                                                                 # end
-              protected :#{selector}                                              # protected :hash_for_users_url
+              remove_method :#{selector} if method_defined?(:#{selector})
+              def #{selector}(*args)
+                options = args.extract_options!
+
+                if args.any?
+                  options[:_positional_args] = args
+                  options[:_positional_keys] = #{route.segment_keys.inspect}
+                end
+
+                options ? #{options.inspect}.merge(options) : #{options.inspect}
+              end
+              protected :#{selector}
             END_EVAL
             helpers << selector
           end
@@ -184,22 +194,16 @@ module ActionDispatch
             hash_access_method = hash_access_name(name, kind)
 
             @module.module_eval <<-END_EVAL, __FILE__, __LINE__ + 1
+              remove_method :#{selector} if method_defined?(:#{selector})
               def #{selector}(*args)
-                options =  #{hash_access_method}(args.extract_options!)
-
-                if args.any?
-                  options[:_positional_args] = args
-                  options[:_positional_keys] = #{route.segment_keys.inspect}
-                end
-
-                url_for(options)
+                url_for(#{hash_access_method}(*args))
               end
             END_EVAL
             helpers << selector
           end
       end
 
-      attr_accessor :set, :routes, :named_routes
+      attr_accessor :set, :routes, :named_routes, :default_scope
       attr_accessor :disable_clear_and_finalize, :resources_path_names
       attr_accessor :default_url_options, :request_class, :valid_conditions
 
@@ -211,7 +215,6 @@ module ActionDispatch
         self.routes = []
         self.named_routes = NamedRouteCollection.new
         self.resources_path_names = self.class.default_resources_path_names.dup
-        self.controller_namespaces = Set.new
         self.default_url_options = {}
 
         self.request_class = request_class
@@ -219,27 +222,35 @@ module ActionDispatch
         self.valid_conditions.delete(:id)
         self.valid_conditions.push(:controller, :action)
 
+        @append = []
         @disable_clear_and_finalize = false
         clear!
       end
 
       def draw(&block)
         clear! unless @disable_clear_and_finalize
+        eval_block(block)
+        finalize! unless @disable_clear_and_finalize
 
+        nil
+      end
+
+      def append(&block)
+        @append << block
+      end
+
+      def eval_block(block)
         mapper = Mapper.new(self)
-        if block.arity == 1
-          mapper.instance_exec(DeprecatedMapper.new(self), &block)
+        if default_scope
+          mapper.with_default_scope(default_scope, &block)
         else
           mapper.instance_exec(&block)
         end
-
-        finalize! unless @disable_clear_and_finalize
-
-        nil
       end
 
       def finalize!
         return if @finalized
+        @append.each { |blk| eval_block(blk) }
         @finalized = true
         @set.freeze
       end
@@ -261,6 +272,31 @@ module ActionDispatch
         named_routes.install(destinations, regenerate_code)
       end
 
+      module MountedHelpers
+      end
+
+      def mounted_helpers(name = :main_app)
+        define_mounted_helper(name) if name
+        MountedHelpers
+      end
+
+      def define_mounted_helper(name)
+        return if MountedHelpers.method_defined?(name)
+
+        routes = self
+        MountedHelpers.class_eval do
+          define_method "_#{name}" do
+            RoutesProxy.new(routes, self._routes_context)
+          end
+        end
+
+        MountedHelpers.class_eval <<-RUBY
+          def #{name}
+            @#{name} ||= _#{name}
+          end
+        RUBY
+      end
+
       def url_helpers
         @url_helpers ||= begin
           routes = self
@@ -269,9 +305,9 @@ module ActionDispatch
             extend ActiveSupport::Concern
             include UrlFor
 
-            @routes = routes
+            @_routes = routes
             class << self
-              delegate :url_for, :to => '@routes'
+              delegate :url_for, :to => '@_routes'
             end
             extend routes.named_routes.module
 
@@ -280,10 +316,10 @@ module ActionDispatch
             # Yes plz - JP
             included do
               routes.install_helpers(self)
-              singleton_class.send(:define_method, :_routes) { routes }
+              singleton_class.send(:redefine_method, :_routes) { routes }
             end
 
-            define_method(:_routes) { routes }
+            define_method(:_routes) { @_routes || routes }
           end
 
           helpers
@@ -295,18 +331,31 @@ module ActionDispatch
       end
 
       def add_route(app, conditions = {}, requirements = {}, defaults = {}, name = nil, anchor = true)
+        raise ArgumentError, "Invalid route name: '#{name}'" unless name.blank? || name.to_s.match(/^[_a-z]\w*$/i)
         route = Route.new(self, app, conditions, requirements, defaults, name, anchor)
-        @set.add_route(*route)
+        @set.add_route(route.app, route.conditions, route.defaults, route.name)
         named_routes[name] = route if name
         routes << route
         route
       end
 
       class Generator #:nodoc:
-        attr_reader :options, :recall, :set, :script_name, :named_route
+        PARAMETERIZE = {
+          :parameterize => lambda do |name, value|
+            if name == :controller
+              value
+            elsif value.is_a?(Array)
+              value.map { |v| Rack::Mount::Utils.escape_uri(v.to_param) }.join('/')
+            else
+              return nil unless param = value.to_param
+              param.split('/').map { |v| Rack::Mount::Utils.escape_uri(v) }.join("/")
+            end
+          end
+        }
+
+        attr_reader :options, :recall, :set, :named_route
 
         def initialize(options, recall, set, extras = false)
-          @script_name = options.delete(:script_name)
           @named_route = options.delete(:use_route)
           @options     = options.dup
           @recall      = recall.dup
@@ -392,36 +441,19 @@ module ActionDispatch
         end
 
         def generate
-          path, params = @set.set.generate(:path_info, named_route, options, recall, opts)
+          path, params = @set.set.generate(:path_info, named_route, options, recall, PARAMETERIZE)
 
           raise_routing_error unless path
 
-          params.reject! {|k,v| !v }
-
           return [path, params.keys] if @extras
 
-          path << "?#{params.to_query}" if params.any?
-          "#{script_name}#{path}"
+          [path, params]
         rescue Rack::Mount::RoutingError
           raise_routing_error
         end
 
-        def opts
-          parameterize = lambda do |name, value|
-            if name == :controller
-              value
-            elsif value.is_a?(Array)
-              value.map { |v| Rack::Mount::Utils.escape_uri(v.to_param) }.join('/')
-            else
-              return nil unless param = value.to_param
-              param.split('/').map { |v| Rack::Mount::Utils.escape_uri(v) }.join("/")
-            end
-          end
-          {:parameterize => parameterize}
-        end
-
         def raise_routing_error
-          raise ActionController::RoutingError.new("No route matches #{options.inspect}")
+          raise ActionController::RoutingError, "No route matches #{options.inspect}"
         end
 
         def different_controller?
@@ -453,7 +485,12 @@ module ActionDispatch
         Generator.new(options, recall, self, extras).generate
       end
 
-      RESERVED_OPTIONS = [:anchor, :params, :only_path, :host, :protocol, :port, :trailing_slash]
+      RESERVED_OPTIONS = [:host, :protocol, :port, :subdomain, :domain, :tld_length,
+                          :trailing_slash, :anchor, :params, :only_path, :script_name]
+
+      def _generate_prefix(options = {})
+        nil
+      end
 
       def url_for(options)
         finalize!
@@ -461,30 +498,24 @@ module ActionDispatch
 
         handle_positional_args(options)
 
-        rewritten_url = ""
-
-        path_segments = options.delete(:_path_segments)
-
-        unless options[:only_path]
-          rewritten_url << (options[:protocol] || "http")
-          rewritten_url << "://" unless rewritten_url.match("://")
-          rewritten_url << rewrite_authentication(options)
-
-          raise "Missing host to link to! Please provide :host parameter or set default_url_options[:host]" unless options[:host]
+        user, password = extract_authentication(options)
+        path_segments  = options.delete(:_path_segments)
+        script_name    = options.delete(:script_name)
 
-          rewritten_url << options[:host]
-          rewritten_url << ":#{options.delete(:port)}" if options.key?(:port)
-        end
+        path = (script_name.blank? ? _generate_prefix(options) : script_name.chomp('/')).to_s
 
         path_options = options.except(*RESERVED_OPTIONS)
         path_options = yield(path_options) if block_given?
-        path = generate(path_options, path_segments || {})
 
-        # ROUTES TODO: This can be called directly, so script_name should probably be set in the routes
-        rewritten_url << (options[:trailing_slash] ? path.sub(/\?|\z/) { "/" + $& } : path)
-        rewritten_url << "##{Rack::Mount::Utils.escape_uri(options[:anchor].to_param.to_s)}" if options[:anchor]
+        path_addition, params = generate(path_options, path_segments || {})
+        path << path_addition
 
-        rewritten_url
+        ActionDispatch::Http::URL.url_for(options.merge({
+          :path => path,
+          :params => params,
+          :user => user,
+          :password => password
+        }))
       end
 
       def call(env)
@@ -494,7 +525,7 @@ module ActionDispatch
 
       def recognize_path(path, environment = {})
         method = (environment[:method] || "GET").to_s.upcase
-        path = Rack::Mount::Utils.normalize_path(path)
+        path = Rack::Mount::Utils.normalize_path(path) unless path =~ %r{://}
 
         begin
           env = Rack::MockRequest.env_for(path, {:method => method})
@@ -502,17 +533,19 @@ module ActionDispatch
           raise ActionController::RoutingError, e.message
         end
 
-        req = Rack::Request.new(env)
+        req = @request_class.new(env)
         @set.recognize(req) do |route, matches, params|
           params.each do |key, value|
             if value.is_a?(String)
               value = value.dup.force_encoding(Encoding::BINARY) if value.encoding_aware?
-              params[key] = URI.unescape(value)
+              params[key] = URI.parser.unescape(value)
             end
           end
 
           dispatcher = route.app
-          dispatcher = dispatcher.app while dispatcher.is_a?(Mapper::Constraints)
+          while dispatcher.is_a?(Mapper::Constraints) && dispatcher.matches?(env) do
+            dispatcher = dispatcher.app
+          end
 
           if dispatcher.is_a?(Dispatcher) && dispatcher.controller(params, false)
             dispatcher.prepare_params!(params)
@@ -524,28 +557,25 @@ module ActionDispatch
       end
 
       private
+
+        def extract_authentication(options)
+          if options[:user] && options[:password]
+            [options.delete(:user), options.delete(:password)]
+          else
+            nil
+          end
+        end
+
         def handle_positional_args(options)
           return unless args = options.delete(:_positional_args)
 
           keys = options.delete(:_positional_keys)
           keys -= options.keys if args.size < keys.size - 1 # take format into account
 
-          args = args.zip(keys).inject({}) do |h, (v, k)|
-            h[k] = v
-            h
-          end
-
           # Tell url_for to skip default_url_options
-          options.merge!(args)
+          options.merge!(Hash[args.zip(keys).map { |v, k| [k, v] }])
         end
 
-        def rewrite_authentication(options)
-          if options[:user] && options[:password]
-            "#{Rack::Utils.escape(options.delete(:user))}:#{Rack::Utils.escape(options.delete(:password))}@"
-          else
-            ""
-          end
-        end
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/routing/routes_proxy.rb b/actionpack/lib/action_dispatch/routing/routes_proxy.rb
new file mode 100644
index 0000000000..f7d5f6397d
--- /dev/null
+++ b/actionpack/lib/action_dispatch/routing/routes_proxy.rb
@@ -0,0 +1,35 @@
+module ActionDispatch
+  module Routing
+    class RoutesProxy #:nodoc:
+      include ActionDispatch::Routing::UrlFor
+
+      attr_accessor :scope, :routes
+      alias :_routes :routes
+
+      def initialize(routes, scope)
+        @routes, @scope = routes, scope
+      end
+
+      def url_options
+        scope.send(:_with_routes, routes) do
+          scope.url_options
+        end
+      end
+
+      def method_missing(method, *args)
+        if routes.url_helpers.respond_to?(method)
+          self.class.class_eval <<-RUBY, __FILE__, __LINE__ + 1
+            def #{method}(*args)
+              options = args.extract_options!
+              args << url_options.merge((options || {}).symbolize_keys)
+              routes.url_helpers.#{method}(*args)
+            end
+          RUBY
+          send(method, *args)
+        else
+          super
+        end
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/routing/url_for.rb b/actionpack/lib/action_dispatch/routing/url_for.rb
index ba93ff8630..d4db78a25a 100644
--- a/actionpack/lib/action_dispatch/routing/url_for.rb
+++ b/actionpack/lib/action_dispatch/routing/url_for.rb
@@ -1,6 +1,6 @@
 module ActionDispatch
   module Routing
-    # In <b>routes.rb</b> one defines URL-to-controller mappings, but the reverse
+    # In <tt>config/routes.rb</tt> you define URL-to-controller mappings, but the reverse
     # is also possible: an URL can be generated from one of your routing definitions.
     # URL generation functionality is centralized in this module.
     #
@@ -12,15 +12,14 @@ module ActionDispatch
     #
     # == URL generation from parameters
     #
-    # As you may know, some functions - such as ActionController::Base#url_for
+    # As you may know, some functions, such as ActionController::Base#url_for
     # and ActionView::Helpers::UrlHelper#link_to, can generate URLs given a set
     # of parameters. For example, you've probably had the chance to write code
     # like this in one of your views:
     #
     #   <%= link_to('Click here', :controller => 'users',
     #           :action => 'new', :message => 'Welcome!') %>
-    #
-    #   # Generates a link to /users/new?message=Welcome%21
+    #   # => "/users/new?message=Welcome%21"
     #
     # link_to, and all other functions that require URL generation functionality,
     # actually use ActionController::UrlFor under the hood. And in particular,
@@ -61,7 +60,7 @@ module ActionDispatch
     #
     # UrlFor also allows one to access methods that have been auto-generated from
     # named routes. For example, suppose that you have a 'users' resource in your
-    # <b>routes.rb</b>:
+    # <tt>config/routes.rb</tt>:
     #
     #   resources :users
     #
@@ -99,6 +98,11 @@ module ActionDispatch
         end
       end
 
+      def initialize(*)
+        @_routes = nil
+        super
+      end
+
       def url_options
         default_url_options
       end
@@ -111,6 +115,13 @@ module ActionDispatch
       # * <tt>:host</tt> - Specifies the host the link should be targeted at.
       #   If <tt>:only_path</tt> is false, this option must be
       #   provided either explicitly, or via +default_url_options+.
+      # * <tt>:subdomain</tt> - Specifies the subdomain of the link, using the +tld_length+
+      #   to split the domain from the host.
+      # * <tt>:domain</tt> - Specifies the domain of the link, using the +tld_length+
+      #   to split the subdomain from the host.
+      # * <tt>:tld_length</tt> - Number of labels the TLD id composed of, only used if
+      #   <tt>:subdomain</tt> or <tt>:domain</tt> are supplied. Defaults to
+      #   <tt>ActionDispatch::Http::URL.tld_length</tt>, which in turn defaults to 1.
       # * <tt>:port</tt> - Optionally specify the port to connect to.
       # * <tt>:anchor</tt> - An anchor name to be appended to the path.
       # * <tt>:trailing_slash</tt> - If true, adds a trailing slash, as in "/archive/2009/"
@@ -134,6 +145,18 @@ module ActionDispatch
           polymorphic_url(options)
         end
       end
+
+      protected
+        def _with_routes(routes)
+          old_routes, @_routes = @_routes, routes
+          yield
+        ensure
+          @_routes = old_routes
+        end
+
+        def _routes_context
+          self
+        end
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/testing/assertions/dom.rb b/actionpack/lib/action_dispatch/testing/assertions/dom.rb
index 9c215de743..47c84742aa 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/dom.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/dom.rb
@@ -3,7 +3,7 @@ require 'action_controller/vendor/html-scanner'
 module ActionDispatch
   module Assertions
     module DomAssertions
-      # Test two HTML strings for equivalency (e.g., identical up to reordering of attributes)
+      # \Test two HTML strings for equivalency (e.g., identical up to reordering of attributes)
       #
       # ==== Examples
       #
diff --git a/actionpack/lib/action_dispatch/testing/assertions/response.rb b/actionpack/lib/action_dispatch/testing/assertions/response.rb
index ec5e9efe44..77a15f3e97 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/response.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/response.rb
@@ -1,6 +1,6 @@
 module ActionDispatch
   module Assertions
-    # A small suite of assertions that test responses from Rails applications.
+    # A small suite of assertions that test responses from \Rails applications.
     module ResponseAssertions
       extend ActiveSupport::Concern
 
@@ -18,9 +18,9 @@ module ActionDispatch
       # * <tt>:missing</tt>   - Status code was 404
       # * <tt>:error</tt>     - Status code was in the 500-599 range
       #
-      # You can also pass an explicit status number like assert_response(501)
-      # or its symbolic equivalent assert_response(:not_implemented).
-      # See ActionDispatch::StatusCodes for a full list.
+      # You can also pass an explicit status number like <tt>assert_response(501)</tt>
+      # or its symbolic equivalent <tt>assert_response(:not_implemented)</tt>.
+      # See Rack::Utils::SYMBOL_TO_STATUS_CODE for a full list.
       #
       # ==== Examples
       #
@@ -45,8 +45,8 @@ module ActionDispatch
       end
 
       # Assert that the redirection options passed in match those of the redirect called in the latest action.
-      # This match can be partial, such that assert_redirected_to(:controller => "weblog") will also
-      # match the redirection of redirect_to(:controller => "weblog", :action => "show") and so on.
+      # This match can be partial, such that <tt>assert_redirected_to(:controller => "weblog")</tt> will also
+      # match the redirection of <tt>redirect_to(:controller => "weblog", :action => "show")</tt> and so on.
       #
       # ==== Examples
       #
@@ -81,14 +81,10 @@ module ActionDispatch
 
         def normalize_argument_to_redirection(fragment)
           case fragment
-          when %r{^\w[\w\d+.-]*:.*}
+          when %r{^\w[A-Za-z\d+.-]*:.*}
             fragment
           when String
-            if fragment =~ %r{^\w[\w\d+.-]*:.*}
-              fragment
-            else
-              @request.protocol + @request.host_with_port + fragment
-            end
+            @request.protocol + @request.host_with_port + fragment
           when :back
             raise RedirectBackError unless refer = @request.headers["Referer"]
             refer
diff --git a/actionpack/lib/action_dispatch/testing/assertions/routing.rb b/actionpack/lib/action_dispatch/testing/assertions/routing.rb
index 9338fa9e70..11e8c63fa0 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/routing.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/routing.rb
@@ -1,12 +1,13 @@
+require 'uri'
 require 'active_support/core_ext/hash/diff'
 require 'active_support/core_ext/hash/indifferent_access'
 
 module ActionDispatch
   module Assertions
-    # Suite of assertions to test routes generated by Rails and the handling of requests made to them.
+    # Suite of assertions to test routes generated by \Rails and the handling of requests made to them.
     module RoutingAssertions
       # Asserts that the routing of the given +path+ was handled correctly and that the parsed options (given in the +expected_options+ hash)
-      # match +path+.  Basically, it asserts that Rails recognizes the route given by +expected_options+.
+      # match +path+.  Basically, it asserts that \Rails recognizes the route given by +expected_options+.
       #
       # Pass a hash in the second argument (+path+) to specify the request method.  This is useful for routes
       # requiring a specific HTTP method.  The hash should contain a :path with the incoming request path
@@ -36,18 +37,8 @@ module ActionDispatch
       #
       #   # Test a custom route
       #   assert_recognizes({:controller => 'items', :action => 'show', :id => '1'}, 'view/item1')
-      #
-      #   # Check a Simply RESTful generated route
-      #   assert_recognizes list_items_url, 'items/list'
       def assert_recognizes(expected_options, path, extras={}, message=nil)
-        if path.is_a? Hash
-          request_method = path[:method]
-          path           = path[:path]
-        else
-          request_method = nil
-        end
-
-        request = recognized_request_for(path, request_method)
+        request = recognized_request_for(path)
 
         expected_options = expected_options.clone
         extras.each_key { |key| expected_options.delete key } unless extras.nil?
@@ -77,7 +68,16 @@ module ActionDispatch
       #   # Asserts that the generated route gives us our custom route
       #   assert_generates "changesets/12", { :controller => 'scm', :action => 'show_diff', :revision => "12" }
       def assert_generates(expected_path, options, defaults={}, extras = {}, message=nil)
-        expected_path = "/#{expected_path}" unless expected_path[0] == ?/
+        if expected_path =~ %r{://}
+          begin
+            uri = URI.parse(expected_path)
+            expected_path = uri.path.to_s.empty? ? "/" : uri.path
+          rescue URI::InvalidURIError => e
+            raise ActionController::RoutingError, e.message
+          end
+        else
+          expected_path = "/#{expected_path}" unless expected_path.first == '/'
+        end
         # Load routes.rb if it hasn't been loaded.
 
         generated_path, extra_keys = @routes.generate_extras(options, defaults)
@@ -121,7 +121,8 @@ module ActionDispatch
           options[:controller] = "/#{controller}"
         end
 
-        assert_generates(path.is_a?(Hash) ? path[:path] : path, options, defaults, extras, message)
+        generate_options = options.dup.delete_if{ |k,v| defaults.key?(k) }
+        assert_generates(path.is_a?(Hash) ? path[:path] : path, generate_options, defaults, extras, message)
       end
 
       # A helper to make it easier to test different route configurations.
@@ -143,16 +144,16 @@ module ActionDispatch
       #
       def with_routing
         old_routes, @routes = @routes, ActionDispatch::Routing::RouteSet.new
-        old_controller, @controller = @controller, @controller.clone if @controller
-        _routes = @routes
-
-        # Unfortunately, there is currently an abstraction leak between AC::Base
-        # and AV::Base which requires having the URL helpers in both AC and AV.
-        # To do this safely at runtime for tests, we need to bump up the helper serial
-        # to that the old AV subclass isn't cached.
-        #
-        # TODO: Make this unnecessary
-        if @controller
+        if defined?(@controller) && @controller
+          old_controller, @controller = @controller, @controller.clone
+          _routes = @routes
+
+          # Unfortunately, there is currently an abstraction leak between AC::Base
+          # and AV::Base which requires having the URL helpers in both AC and AV.
+          # To do this safely at runtime for tests, we need to bump up the helper serial
+          # to that the old AV subclass isn't cached.
+          #
+          # TODO: Make this unnecessary
           @controller.singleton_class.send(:include, _routes.url_helpers)
           @controller.view_context_class = Class.new(@controller.view_context_class) do
             include _routes.url_helpers
@@ -161,14 +162,14 @@ module ActionDispatch
         yield @routes
       ensure
         @routes = old_routes
-        if @controller
+        if defined?(@controller) && @controller
           @controller = old_controller
         end
       end
 
       # ROUTES TODO: These assertions should really work in an integration context
       def method_missing(selector, *args, &block)
-        if @controller && @routes && @routes.named_routes.helpers.include?(selector)
+        if defined?(@controller) && @controller && @routes && @routes.named_routes.helpers.include?(selector)
           @controller.send(selector, *args, &block)
         else
           super
@@ -177,15 +178,35 @@ module ActionDispatch
 
       private
         # Recognizes the route for a given path.
-        def recognized_request_for(path, request_method = nil)
-          path = "/#{path}" unless path.first == '/'
+        def recognized_request_for(path)
+          if path.is_a?(Hash)
+            method = path[:method]
+            path   = path[:path]
+          else
+            method = :get
+          end
 
           # Assume given controller
           request = ActionController::TestRequest.new
-          request.env["REQUEST_METHOD"] = request_method.to_s.upcase if request_method
-          request.path = path
 
-          params = @routes.recognize_path(path, { :method => request.method })
+          if path =~ %r{://}
+            begin
+              uri = URI.parse(path)
+              request.env["rack.url_scheme"] = uri.scheme || "http"
+              request.host = uri.host if uri.host
+              request.port = uri.port if uri.port
+              request.path = uri.path.to_s.empty? ? "/" : uri.path
+            rescue URI::InvalidURIError => e
+              raise ActionController::RoutingError, e.message
+            end
+          else
+            path = "/#{path}" unless path.first == "/"
+            request.path = path
+          end
+
+          request.request_method = method if method
+
+          params = @routes.recognize_path(path, { :method => method })
           request.path_parameters = params.with_indifferent_access
 
           request
diff --git a/actionpack/lib/action_dispatch/testing/assertions/selector.rb b/actionpack/lib/action_dispatch/testing/assertions/selector.rb
index 2fc9e2b7d6..2b862fb7d6 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/selector.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/selector.rb
@@ -24,10 +24,6 @@ module ActionDispatch
     #
     # Also see HTML::Selector to learn how to use selectors.
     module SelectorAssertions
-      # :call-seq:
-      #   css_select(selector) => array
-      #   css_select(element, selector) => array
-      #
       # Select and return all matching elements.
       #
       # If called with a single argument, uses that argument as a selector
@@ -71,7 +67,7 @@ module ActionDispatch
           arg = args.shift
         elsif arg == nil
           raise ArgumentError, "First argument is either selector or element to select, but nil found. Perhaps you called assert_select with an element that does not exist?"
-        elsif @selected
+        elsif defined?(@selected) && @selected
           matches = []
 
           @selected.each do |selected|
@@ -99,10 +95,6 @@ module ActionDispatch
         selector.select(root)
       end
 
-      # :call-seq:
-      #   assert_select(selector, equality?, message?)
-      #   assert_select(element, selector, equality?, message?)
-      #
       # An assertion that selects elements and makes one or more equality tests.
       #
       # If the first argument is an element, selects all matching elements
@@ -195,6 +187,7 @@ module ActionDispatch
       def assert_select(*args, &block)
         # Start with optional element followed by mandatory selector.
         arg = args.shift
+        @selected ||= nil
 
         if arg.is_a?(HTML::Node)
           # First argument is a node (tag or text, but also HTML root),
@@ -332,11 +325,6 @@ module ActionDispatch
         end
       end
 
-      # :call-seq:
-      #   assert_select_rjs(id?) { |elements| ... }
-      #   assert_select_rjs(statement, id?) { |elements| ... }
-      #   assert_select_rjs(:insert, position, id?) { |elements| ... }
-      #
       # Selects content from the RJS response.
       #
       # === Narrowing down
@@ -455,6 +443,7 @@ module ActionDispatch
           assert_block("") { true } # to count the assertion
           if block_given? && !([:remove, :show, :hide, :toggle].include? rjs_type)
             begin
+              @selected ||= nil
               in_scope, @selected = @selected, matches
               yield matches
             ensure
@@ -474,9 +463,6 @@ module ActionDispatch
         end
       end
 
-      # :call-seq:
-      #   assert_select_encoded(element?) { |elements| ... }
-      #
       # Extracts the content of an element, treats it as encoded HTML and runs
       # nested assertion on it.
       #
@@ -529,8 +515,8 @@ module ActionDispatch
           node.content.gsub(/<!\[CDATA\[(.*)(\]\]>)?/m) { Rack::Utils.escapeHTML($1) }
         end
 
-        selected = elements.map do |element|
-          text = element.children.select{ |c| not c.tag? }.map{ |c| fix_content[c] }.join
+        selected = elements.map do |_element|
+          text = _element.children.select{ |c| not c.tag? }.map{ |c| fix_content[c] }.join
           root = HTML::Document.new(CGI.unescapeHTML("<encoded>#{text}</encoded>")).root
           css_select(root, "encoded:root", &block)[0]
         end
@@ -543,9 +529,6 @@ module ActionDispatch
         end
       end
 
-      # :call-seq:
-      #   assert_select_email { }
-      #
       # Extracts the body of an email and runs nested assertions on it.
       #
       # You must enable deliveries for this assertion to work, use:
diff --git a/actionpack/lib/action_dispatch/testing/integration.rb b/actionpack/lib/action_dispatch/testing/integration.rb
index b52795c575..5c6416a19e 100644
--- a/actionpack/lib/action_dispatch/testing/integration.rb
+++ b/actionpack/lib/action_dispatch/testing/integration.rb
@@ -115,8 +115,8 @@ module ActionDispatch
       end
     end
 
-    # An integration Session instance represents a set of requests and responses
-    # performed sequentially by some virtual user. Because you can instantiate
+    # An instance of this class represents a set of requests and responses
+    # performed sequentially by a test process. Because you can instantiate
     # multiple sessions and run them side-by-side, you can also mimic (to some
     # limited extent) multiple simultaneous users interacting with your system.
     #
@@ -171,6 +171,7 @@ module ActionDispatch
 
       # Create and initialize a new Session instance.
       def initialize(app)
+        super()
         @app = app
 
         # If the app is a Rails app, make url_helpers available on the session
@@ -182,6 +183,7 @@ module ActionDispatch
         reset!
       end
 
+      remove_method :default_url_options
       def default_url_options
         { :host => host, :protocol => https? ? "https" : "http" }
       end
@@ -233,9 +235,7 @@ module ActionDispatch
       # Set the host name to use in the next request.
       #
       #   session.host! "www.example.com"
-      def host!(name)
-        @host = name
-      end
+      alias :host! :host=
 
       private
         def _mock_session
@@ -257,12 +257,14 @@ module ActionDispatch
             end
           end
 
+          hostname, port = host.split(':')
+
           env = {
             :method => method,
             :params => parameters,
 
-            "SERVER_NAME"     => host.split(':')[0],
-            "SERVER_PORT"     => (https? ? "443" : "80"),
+            "SERVER_NAME"     => hostname,
+            "SERVER_PORT"     => port || (https? ? "443" : "80"),
             "HTTPS"           => https? ? "on" : "off",
             "rack.url_scheme" => https? ? "https" : "http",
 
@@ -305,7 +307,7 @@ module ActionDispatch
       include ActionDispatch::Assertions
 
       def app
-        @app
+        @app ||= nil
       end
 
       # Reset the current session. This is useful for testing multiple sessions
@@ -317,10 +319,10 @@ module ActionDispatch
       %w(get post put head delete cookies assigns
          xml_http_request xhr get_via_redirect post_via_redirect).each do |method|
         define_method(method) do |*args|
-          reset! unless @integration_session
+          reset! unless integration_session
           # reset the html_document variable, but only for new get/post calls
           @html_document = nil unless %w(cookies assigns).include?(method)
-          @integration_session.__send__(method, *args).tap do
+          integration_session.__send__(method, *args).tap do
             copy_session_variables!
           end
         end
@@ -345,7 +347,7 @@ module ActionDispatch
       # Copy the instance variables from the current session instance into the
       # test instance.
       def copy_session_variables! #:nodoc:
-        return unless @integration_session
+        return unless integration_session
         %w(controller response request).each do |var|
           instance_variable_set("@#{var}", @integration_session.__send__(var))
         end
@@ -355,35 +357,44 @@ module ActionDispatch
       include ActionDispatch::Routing::UrlFor
 
       def url_options
-        reset! unless @integration_session
-        @integration_session.url_options
+        reset! unless integration_session
+        integration_session.url_options
+      end
+
+      def respond_to?(method, include_private = false)
+        integration_session.respond_to?(method, include_private) || super
       end
 
       # Delegate unhandled messages to the current session instance.
       def method_missing(sym, *args, &block)
-        reset! unless @integration_session
-        if @integration_session.respond_to?(sym)
-          @integration_session.__send__(sym, *args, &block).tap do
+        reset! unless integration_session
+        if integration_session.respond_to?(sym)
+          integration_session.__send__(sym, *args, &block).tap do
             copy_session_variables!
           end
         else
           super
         end
       end
+
+      private
+        def integration_session
+          @integration_session ||= nil
+        end
     end
   end
 
-  # An IntegrationTest is one that spans multiple controllers and actions,
+  # An test that spans multiple controllers and actions,
   # tying them all together to ensure they work together as expected. It tests
   # more completely than either unit or functional tests do, exercising the
   # entire stack, from the dispatcher to the database.
   #
-  # At its simplest, you simply extend IntegrationTest and write your tests
+  # At its simplest, you simply extend <tt>IntegrationTest</tt> and write your tests
   # using the get/post methods:
   #
   #   require "test_helper"
   #
-  #   class ExampleTest < ActionController::IntegrationTest
+  #   class ExampleTest < ActionDispatch::IntegrationTest
   #     fixtures :people
   #
   #     def test_login
@@ -403,11 +414,11 @@ module ActionDispatch
   # However, you can also have multiple session instances open per test, and
   # even extend those instances with assertions and methods to create a very
   # powerful testing DSL that is specific for your application. You can even
-  # reference any named routes you happen to have defined!
+  # reference any named routes you happen to have defined.
   #
   #   require "test_helper"
   #
-  #   class AdvancedTest < ActionController::IntegrationTest
+  #   class AdvancedTest < ActionDispatch::IntegrationTest
   #     fixtures :people, :rooms
   #
   #     def test_login_and_speak
diff --git a/actionpack/lib/action_dispatch/testing/performance_test.rb b/actionpack/lib/action_dispatch/testing/performance_test.rb
index 33a5c68b9d..e7aeb45fb3 100644
--- a/actionpack/lib/action_dispatch/testing/performance_test.rb
+++ b/actionpack/lib/action_dispatch/testing/performance_test.rb
@@ -1,5 +1,4 @@
 require 'active_support/testing/performance'
-require 'active_support/testing/default'
 
 begin
   module ActionDispatch
@@ -11,9 +10,8 @@ begin
     # formats are written, so you'll have two output files per test method.
     class PerformanceTest < ActionDispatch::IntegrationTest
       include ActiveSupport::Testing::Performance
-      include ActiveSupport::Testing::Default
     end
   end
 rescue NameError
   $stderr.puts "Specify ruby-prof as application's dependency in Gemfile to run benchmarks."
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_dispatch/testing/test_process.rb b/actionpack/lib/action_dispatch/testing/test_process.rb
index c56ebc6438..d430691429 100644
--- a/actionpack/lib/action_dispatch/testing/test_process.rb
+++ b/actionpack/lib/action_dispatch/testing/test_process.rb
@@ -22,7 +22,7 @@ module ActionDispatch
     end
 
     def cookies
-      @request.cookies.merge(@response.cookies)
+      @request.cookies.merge(@response.cookies).with_indifferent_access
     end
 
     def redirect_to_url
diff --git a/actionpack/lib/action_dispatch/testing/test_request.rb b/actionpack/lib/action_dispatch/testing/test_request.rb
index b3e67f6e36..822adb6a47 100644
--- a/actionpack/lib/action_dispatch/testing/test_request.rb
+++ b/actionpack/lib/action_dispatch/testing/test_request.rb
@@ -1,5 +1,6 @@
 require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/hash/reverse_merge'
+require 'rack/utils'
 
 module ActionDispatch
   class TestRequest < Request
@@ -10,9 +11,10 @@ module ActionDispatch
     end
 
     def initialize(env = {})
-      env = Rails.application.env_defaults.merge(env) if defined?(Rails.application)
+      env = Rails.application.env_config.merge(env) if defined?(Rails.application)
       super(DEFAULT_ENV.merge(env))
 
+      @cookies = nil
       self.host        = 'test.host'
       self.remote_addr = '0.0.0.0'
       self.user_agent  = 'Rails Testing'
@@ -66,7 +68,7 @@ module ActionDispatch
 
     def accept=(mime_types)
       @env.delete('action_dispatch.request.accepts')
-      @env['HTTP_ACCEPT'] = Array(mime_types).collect { |mime_types| mime_types.to_s }.join(",")
+      @env['HTTP_ACCEPT'] = Array(mime_types).collect { |mime_type| mime_type.to_s }.join(",")
     end
 
     def cookies
@@ -76,10 +78,14 @@ module ActionDispatch
     private
       def write_cookies!
         unless @cookies.blank?
-          @env['HTTP_COOKIE'] = @cookies.map { |name, value| "#{name}=#{value};" }.join(' ')
+          @env['HTTP_COOKIE'] = @cookies.map { |name, value| escape_cookie(name, value) }.join('; ')
         end
       end
 
+      def escape_cookie(name, value)
+        "#{Rack::Utils.escape(name)}=#{Rack::Utils.escape(value)}"
+      end
+
       def delete_nil_values!
         @env.delete_if { |k, v| v.nil? }
       end
diff --git a/actionpack/lib/action_dispatch/testing/test_response.rb b/actionpack/lib/action_dispatch/testing/test_response.rb
index 44fb1bde99..82039e72e7 100644
--- a/actionpack/lib/action_dispatch/testing/test_response.rb
+++ b/actionpack/lib/action_dispatch/testing/test_response.rb
@@ -14,123 +14,16 @@ module ActionDispatch
       end
     end
 
-    module DeprecatedHelpers
-      def template
-        ActiveSupport::Deprecation.warn("response.template has been deprecated. Use controller.template instead", caller)
-        @template
-      end
-      attr_writer :template
-
-      def session
-        ActiveSupport::Deprecation.warn("response.session has been deprecated. Use request.session instead", caller)
-        @request.session
-      end
-
-      def assigns
-        ActiveSupport::Deprecation.warn("response.assigns has been deprecated. Use controller.assigns instead", caller)
-        @template.controller.assigns
-      end
-
-      def layout
-        ActiveSupport::Deprecation.warn("response.layout has been deprecated. Use template.layout instead", caller)
-        @template.layout
-      end
-
-      def redirected_to
-        ::ActiveSupport::Deprecation.warn("response.redirected_to is deprecated. Use response.redirect_url instead", caller)
-        redirect_url
-      end
-
-      def redirect_url_match?(pattern)
-        ::ActiveSupport::Deprecation.warn("response.redirect_url_match? is deprecated. Use assert_match(/foo/, response.redirect_url) instead", caller)
-        return false if redirect_url.nil?
-        p = Regexp.new(pattern) if pattern.class == String
-        p = pattern if pattern.class == Regexp
-        return false if p.nil?
-        p.match(redirect_url) != nil
-      end
-
-      # Returns the template of the file which was used to
-      # render this response (or nil)
-      def rendered
-        ActiveSupport::Deprecation.warn("response.rendered has been deprecated. Use template.rendered instead", caller)
-        @template.instance_variable_get(:@_rendered)
-      end
-
-      # A shortcut to the flash. Returns an empty hash if no session flash exists.
-      def flash
-        ActiveSupport::Deprecation.warn("response.flash has been deprecated. Use request.flash instead", caller)
-        request.session['flash'] || {}
-      end
-
-      # Do we have a flash?
-      def has_flash?
-        ActiveSupport::Deprecation.warn("response.has_flash? has been deprecated. Use flash.any? instead", caller)
-        !flash.empty?
-      end
-
-      # Do we have a flash that has contents?
-      def has_flash_with_contents?
-        ActiveSupport::Deprecation.warn("response.has_flash_with_contents? has been deprecated. Use flash.any? instead", caller)
-        !flash.empty?
-      end
-
-      # Does the specified flash object exist?
-      def has_flash_object?(name=nil)
-        ActiveSupport::Deprecation.warn("response.has_flash_object? has been deprecated. Use flash[name] instead", caller)
-        !flash[name].nil?
-      end
-
-      # Does the specified object exist in the session?
-      def has_session_object?(name=nil)
-        ActiveSupport::Deprecation.warn("response.has_session_object? has been deprecated. Use session[name] instead", caller)
-        !session[name].nil?
-      end
-
-      # A shortcut to the template.assigns
-      def template_objects
-        ActiveSupport::Deprecation.warn("response.template_objects has been deprecated. Use template.assigns instead", caller)
-        @template.assigns || {}
-      end
-
-      # Does the specified template object exist?
-      def has_template_object?(name=nil)
-        ActiveSupport::Deprecation.warn("response.has_template_object? has been deprecated. Use tempate.assigns[name].nil? instead", caller)
-        !template_objects[name].nil?
-      end
-
-      # Returns binary content (downloadable file), converted to a String
-      def binary_content
-        ActiveSupport::Deprecation.warn("response.binary_content has been deprecated. Use response.body instead", caller)
-        body
-      end
-    end
-    include DeprecatedHelpers
-
     # Was the response successful?
-    def success?
-      (200..299).include?(response_code)
-    end
+    alias_method :success?, :successful?
 
     # Was the URL not found?
-    def missing?
-      response_code == 404
-    end
+    alias_method :missing?, :not_found?
 
     # Were we redirected?
-    def redirect?
-      (300..399).include?(response_code)
-    end
+    alias_method :redirect?, :redirection?
 
     # Was there a server-side error?
-    def error?
-      (500..599).include?(response_code)
-    end
-    alias_method :server_error?, :error?
-
-    # Was there a client client?
-    def client_error?
-      (400..499).include?(response_code)
-    end
+    alias_method :error?, :server_error?
   end
 end
diff --git a/actionpack/lib/action_pack.rb b/actionpack/lib/action_pack.rb
index 1a1497385a..914b13dbfb 100644
--- a/actionpack/lib/action_pack.rb
+++ b/actionpack/lib/action_pack.rb
@@ -1,5 +1,5 @@
 #--
-# Copyright (c) 2004-2010 David Heinemeier Hansson
+# Copyright (c) 2004-2011 David Heinemeier Hansson
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
diff --git a/actionpack/lib/action_pack/version.rb b/actionpack/lib/action_pack/version.rb
index 7eaf7d0534..170ceb299a 100644
--- a/actionpack/lib/action_pack/version.rb
+++ b/actionpack/lib/action_pack/version.rb
@@ -1,10 +1,10 @@
 module ActionPack
   module VERSION #:nodoc:
     MAJOR = 3
-    MINOR = 0
+    MINOR = 1
     TINY  = 0
-    BUILD = "rc"
+    PRE   = "beta"
 
-    STRING = [MAJOR, MINOR, TINY, BUILD].join('.')
+    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
   end
 end
diff --git a/actionpack/lib/action_view.rb b/actionpack/lib/action_view.rb
index c0d7423682..60665387b6 100644
--- a/actionpack/lib/action_view.rb
+++ b/actionpack/lib/action_view.rb
@@ -1,5 +1,5 @@
 #--
-# Copyright (c) 2004-2010 David Heinemeier Hansson
+# Copyright (c) 2004-2011 David Heinemeier Hansson
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
@@ -21,9 +21,6 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #++
 
-activesupport_path = File.expand_path('../../../activesupport/lib', __FILE__)
-$:.unshift(activesupport_path) if File.directory?(activesupport_path) && !$:.include?(activesupport_path)
-
 require 'active_support/ruby/shim'
 require 'active_support/core_ext/class/attribute_accessors'
 
@@ -33,35 +30,43 @@ module ActionView
   extend ActiveSupport::Autoload
 
   eager_autoload do
+    autoload :Base
     autoload :Context
-    autoload :Template
     autoload :Helpers
+    autoload :LookupContext
+    autoload :Partials
+    autoload :PathSet
+    autoload :Rendering
+    autoload :Template
+    autoload :TestCase
 
-    autoload_under "render" do
-      autoload :Layouts
-      autoload :Partials
-      autoload :Rendering
+    autoload_under "renderer" do
+      autoload :AbstractRenderer
+      autoload :PartialRenderer
+      autoload :TemplateRenderer
     end
 
-    autoload :Base
-    autoload :LookupContext
-    autoload :Resolver,           'action_view/template/resolver'
-    autoload :PathResolver,       'action_view/template/resolver'
-    autoload :FileSystemResolver, 'action_view/template/resolver'
-    autoload :PathSet,            'action_view/paths'
+    autoload_at "action_view/template/resolver" do
+      autoload :Resolver
+      autoload :PathResolver
+      autoload :FileSystemResolver
+      autoload :FallbackFileSystemResolver
+    end
 
-    autoload :MissingTemplate,    'action_view/template/error'
-    autoload :ActionViewError,    'action_view/template/error'
-    autoload :EncodingError,      'action_view/template/error'
-    autoload :TemplateError,      'action_view/template/error'
-    autoload :WrongEncodingError, 'action_view/template/error'
+    autoload_at "action_view/template/error" do
+      autoload :MissingTemplate
+      autoload :ActionViewError
+      autoload :EncodingError
+      autoload :TemplateError
+      autoload :WrongEncodingError
+    end
 
-    autoload :TemplateHandler,   'action_view/template'
-    autoload :TemplateHandlers,  'action_view/template'
+    autoload_at "action_view/template" do
+      autoload :TemplateHandler
+      autoload :TemplateHandlers
+    end
   end
 
-  autoload :TestCase, 'action_view/test_case'
-
   ENCODING_FLAG = '#.*coding[:=]\s*(\S+)[ \t]*'
 end
 
diff --git a/actionpack/lib/action_view/base.rb b/actionpack/lib/action_view/base.rb
index 20a2e7c1f0..ab8c6259c5 100644
--- a/actionpack/lib/action_view/base.rb
+++ b/actionpack/lib/action_view/base.rb
@@ -6,9 +6,6 @@ require 'active_support/ordered_options'
 require 'action_view/log_subscriber'
 
 module ActionView #:nodoc:
-  class NonConcattingString < ActiveSupport::SafeBuffer
-  end
-
   # = Action View Base
   #
   # Action View templates can be written in three ways. If the template file has a <tt>.erb</tt> (or <tt>.rhtml</tt>) extension then it uses a mixture of ERb
@@ -21,7 +18,7 @@ module ActionView #:nodoc:
   # following loop for names:
   #
   #   <b>Names of all the people</b>
-  #   <% for person in @people %>
+  #   <% @people.each do |person| %>
   #     Name: <%= person.name %><br/>
   #   <% end %>
   #
@@ -79,8 +76,8 @@ module ActionView #:nodoc:
   #
   # === Template caching
   #
-  # By default, Rails will compile each template to a method in order to render it. When you alter a template, Rails will
-  # check the file's modification time and recompile it.
+  # By default, Rails will compile each template to a method in order to render it. When you alter a template,
+  # Rails will check the file's modification time and recompile it in development mode.
   #
   # == Builder
   #
@@ -156,12 +153,9 @@ module ActionView #:nodoc:
   #
   # This refreshes the sidebar, removes a person element and highlights the user list.
   #
-  # See the ActionView::Helpers::PrototypeHelper::GeneratorMethods documentation for more details.
+  # See the ActionView::Helpers::PrototypeHelper::JavaScriptGenerator::GeneratorMethods documentation for more details.
   class Base
-    module Subclasses
-    end
-
-    include Helpers, Rendering, Partials, Layouts, ::ERB::Util, Context
+    include Helpers, Rendering, Partials, ::ERB::Util, Context
 
     # Specify whether RJS responses should be wrapped in a try/catch block
     # that alert()s the caught exception (and then re-raises it).
@@ -178,24 +172,26 @@ module ActionView #:nodoc:
     class << self
       delegate :erb_trim_mode=, :to => 'ActionView::Template::Handlers::ERB'
       delegate :logger, :to => 'ActionController::Base', :allow_nil => true
+
+      def cache_template_loading
+        ActionView::Resolver.caching?
+      end
+
+      def cache_template_loading=(value)
+        ActionView::Resolver.caching = value
+      end
     end
 
-    attr_accessor :base_path, :assigns, :template_extension, :lookup_context
-    attr_internal :captures, :request, :controller, :template, :config
+    attr_accessor :_template
+    attr_internal :request, :controller, :config, :assigns, :lookup_context
 
-    delegate :find_template, :template_exists?, :formats, :formats=, :locale, :locale=,
-             :view_paths, :view_paths=, :with_fallbacks, :update_details, :with_layout_format, :to => :lookup_context
+    delegate :formats, :formats=, :locale, :locale=, :view_paths, :view_paths=, :to => :lookup_context
 
-    delegate :request_forgery_protection_token, :template, :params, :session, :cookies, :response, :headers,
+    delegate :request_forgery_protection_token, :params, :session, :cookies, :response, :headers,
              :flash, :action_name, :controller_name, :to => :controller
 
     delegate :logger, :to => :controller, :allow_nil => true
 
-    # TODO: HACK FOR RJS
-    def view_context
-      self
-    end
-
     def self.xss_safe? #:nodoc:
       true
     end
@@ -206,33 +202,40 @@ module ActionView #:nodoc:
     end
 
     def assign(new_assigns) # :nodoc:
-      self.assigns = new_assigns.each { |key, value| instance_variable_set("@#{key}", value) }
+      @_assigns = new_assigns.each { |key, value| instance_variable_set("@#{key}", value) }
     end
 
     def initialize(lookup_context = nil, assigns_for_first_render = {}, controller = nil, formats = nil) #:nodoc:
       assign(assigns_for_first_render)
-      self.helpers = self.class.helpers || Module.new
-
-      if @_controller = controller
-        @_request = controller.request if controller.respond_to?(:request)
-      end
-
-      config = controller && controller.respond_to?(:config) ? controller.config : {}
-      @_config = ActiveSupport::InheritableOptions.new(config)
+      self.helpers = Module.new unless self.class.helpers
 
+      @_config = {}
       @_content_for  = Hash.new { |h,k| h[k] = ActiveSupport::SafeBuffer.new }
       @_virtual_path = nil
       @output_buffer = nil
 
-      @lookup_context = lookup_context.is_a?(ActionView::LookupContext) ?
+      if @_controller = controller
+        @_request = controller.request if controller.respond_to?(:request)
+        @_config  = controller.config.inheritable_copy if controller.respond_to?(:config)
+      end
+
+      @_lookup_context = lookup_context.is_a?(ActionView::LookupContext) ?
         lookup_context : ActionView::LookupContext.new(lookup_context)
-      @lookup_context.formats = formats if formats
+      @_lookup_context.formats = formats if formats
+    end
+
+    def store_content_for(key, value)
+      @_content_for[key] = value
     end
 
     def controller_path
       @controller_path ||= controller && controller.controller_path
     end
 
+    def controller_prefixes
+      @controller_prefixes ||= controller && controller._prefixes
+    end
+
     ActiveSupport.run_load_hooks(:action_view, self)
   end
 end
diff --git a/actionpack/lib/action_view/helpers.rb b/actionpack/lib/action_view/helpers.rb
index b7ffa345cc..d338ce616a 100644
--- a/actionpack/lib/action_view/helpers.rb
+++ b/actionpack/lib/action_view/helpers.rb
@@ -12,14 +12,13 @@ module ActionView #:nodoc:
     autoload :CsrfHelper
     autoload :DateHelper
     autoload :DebugHelper
-    autoload :DeprecatedBlockHelpers
     autoload :FormHelper
     autoload :FormOptionsHelper
     autoload :FormTagHelper
     autoload :JavaScriptHelper, "action_view/helpers/javascript_helper"
     autoload :NumberHelper
     autoload :PrototypeHelper
-    autoload :RawOutputHelper
+    autoload :OutputSafetyHelper
     autoload :RecordTagHelper
     autoload :SanitizeHelper
     autoload :ScriptaculousHelper
@@ -49,7 +48,7 @@ module ActionView #:nodoc:
     include JavaScriptHelper
     include NumberHelper
     include PrototypeHelper
-    include RawOutputHelper
+    include OutputSafetyHelper
     include RecordTagHelper
     include SanitizeHelper
     include ScriptaculousHelper
diff --git a/actionpack/lib/action_view/helpers/active_model_helper.rb b/actionpack/lib/action_view/helpers/active_model_helper.rb
index 6bb0875bc3..96c3eec337 100644
--- a/actionpack/lib/action_view/helpers/active_model_helper.rb
+++ b/actionpack/lib/action_view/helpers/active_model_helper.rb
@@ -7,25 +7,6 @@ module ActionView
   # = Active Model Helpers
   module Helpers
     module ActiveModelHelper
-      %w(input form error_messages_for error_message_on).each do |method|
-        class_eval <<-RUBY, __FILE__, __LINE__ + 1
-          def #{method}(*args)
-            ActiveSupport::Deprecation.warn "#{method} was removed from Rails and is now available as a plugin. " <<
-              "Please install it with `rails plugin install git://github.com/rails/dynamic_form.git`.", caller
-          end
-        RUBY
-      end
-    end
-
-    module ActiveModelFormBuilder
-      %w(error_messages error_message_on).each do |method|
-        class_eval <<-RUBY, __FILE__, __LINE__ + 1
-          def #{method}(*args)
-            ActiveSupport::Deprecation.warn "f.#{method} was removed from Rails and is now available as a plugin. " <<
-              "Please install it with `rails plugin install git://github.com/rails/dynamic_form.git`.", caller
-          end
-        RUBY
-      end
     end
 
     module ActiveModelInstanceTag
@@ -67,10 +48,6 @@ module ActionView
       end
     end
 
-    class FormBuilder
-      include ActiveModelFormBuilder
-    end
-
     class InstanceTag
       include ActiveModelInstanceTag
     end
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helper.rb b/actionpack/lib/action_view/helpers/asset_tag_helper.rb
index a3c43d3e93..f6b2d4f3f4 100644
--- a/actionpack/lib/action_view/helpers/asset_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/asset_tag_helper.rb
@@ -1,9 +1,6 @@
-require 'thread'
-require 'cgi'
-require 'action_view/helpers/url_helper'
-require 'action_view/helpers/tag_helper'
-require 'active_support/core_ext/file'
-require 'active_support/core_ext/object/blank'
+require 'action_view/helpers/asset_tag_helpers/javascript_tag_helpers'
+require 'action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers'
+require 'action_view/helpers/asset_tag_helpers/asset_paths'
 
 module ActionView
   # = Action View Asset Tag Helpers
@@ -152,7 +149,7 @@ module ActionView
     #
     #   # Normally you'd calculate RELEASE_NUMBER at startup.
     #   RELEASE_NUMBER = 12345
-    #   config.action_controller.asset_path_template = proc { |asset_path|
+    #   config.action_controller.asset_path = proc { |asset_path|
     #     "/release-#{RELEASE_NUMBER}#{asset_path}"
     #   }
     #
@@ -194,20 +191,8 @@ module ActionView
     #   RewriteEngine On
     #   RewriteRule ^/release-\d+/(images|javascripts|stylesheets)/(.*)$ /$1/$2 [L]
     module AssetTagHelper
-      mattr_reader :javascript_expansions
-      @@javascript_expansions = { }
-
-      mattr_reader :stylesheet_expansions
-      @@stylesheet_expansions = {}
-
-      # You can enable or disable the asset tag timestamps cache.
-      # With the cache enabled, the asset tag helper methods will make fewer
-      # expensive file system calls. However this prevents you from modifying
-      # any asset files while the server is running.
-      #
-      #   ActionView::Helpers::AssetTagHelper.cache_asset_timestamps = false
-      mattr_accessor :cache_asset_timestamps
-
+      include JavascriptTagHelpers
+      include StylesheetTagHelpers
       # Returns a link tag that browsers and news readers can use to auto-detect
       # an RSS or ATOM feed. The +type+ can either be <tt>:rss</tt> (default) or
       # <tt>:atom</tt>. Control the link options in url_for format using the
@@ -241,263 +226,6 @@ module ActionView
         )
       end
 
-      # Computes the path to a javascript asset in the public javascripts directory.
-      # If the +source+ filename has no extension, .js will be appended (except for explicit URIs)
-      # Full paths from the document root will be passed through.
-      # Used internally by javascript_include_tag to build the script path.
-      #
-      # ==== Examples
-      #   javascript_path "xmlhr" # => /javascripts/xmlhr.js
-      #   javascript_path "dir/xmlhr.js" # => /javascripts/dir/xmlhr.js
-      #   javascript_path "/dir/xmlhr" # => /dir/xmlhr.js
-      #   javascript_path "http://www.railsapplication.com/js/xmlhr" # => http://www.railsapplication.com/js/xmlhr
-      #   javascript_path "http://www.railsapplication.com/js/xmlhr.js" # => http://www.railsapplication.com/js/xmlhr.js
-      def javascript_path(source)
-        compute_public_path(source, 'javascripts', 'js')
-      end
-      alias_method :path_to_javascript, :javascript_path # aliased to avoid conflicts with a javascript_path named route
-
-      # Returns an html script tag for each of the +sources+ provided. You
-      # can pass in the filename (.js extension is optional) of javascript files
-      # that exist in your public/javascripts directory for inclusion into the
-      # current page or you can pass the full path relative to your document
-      # root. To include the Prototype and Scriptaculous javascript libraries in
-      # your application, pass <tt>:defaults</tt> as the source. When using
-      # <tt>:defaults</tt>, if an application.js file exists in your public
-      # javascripts directory, it will be included as well. You can modify the
-      # html attributes of the script tag by passing a hash as the last argument.
-      #
-      # ==== Examples
-      #   javascript_include_tag "xmlhr" # =>
-      #     <script type="text/javascript" src="/javascripts/xmlhr.js"></script>
-      #
-      #   javascript_include_tag "xmlhr.js" # =>
-      #     <script type="text/javascript" src="/javascripts/xmlhr.js"></script>
-      #
-      #   javascript_include_tag "common.javascript", "/elsewhere/cools" # =>
-      #     <script type="text/javascript" src="/javascripts/common.javascript"></script>
-      #     <script type="text/javascript" src="/elsewhere/cools.js"></script>
-      #
-      #   javascript_include_tag "http://www.railsapplication.com/xmlhr" # =>
-      #     <script type="text/javascript" src="http://www.railsapplication.com/xmlhr.js"></script>
-      #
-      #   javascript_include_tag "http://www.railsapplication.com/xmlhr.js" # =>
-      #     <script type="text/javascript" src="http://www.railsapplication.com/xmlhr.js"></script>
-      #
-      #   javascript_include_tag :defaults # =>
-      #     <script type="text/javascript" src="/javascripts/prototype.js"></script>
-      #     <script type="text/javascript" src="/javascripts/effects.js"></script>
-      #     ...
-      #     <script type="text/javascript" src="/javascripts/application.js"></script>
-      #
-      # * = The application.js file is only referenced if it exists
-      #
-      # Though it's not really recommended practice, if you need to extend the default JavaScript set for any reason
-      # (e.g., you're going to be using a certain .js file in every action), then take a look at the register_javascript_include_default method.
-      #
-      # You can also include all javascripts in the javascripts directory using <tt>:all</tt> as the source:
-      #
-      #   javascript_include_tag :all # =>
-      #     <script type="text/javascript" src="/javascripts/prototype.js"></script>
-      #     <script type="text/javascript" src="/javascripts/effects.js"></script>
-      #     ...
-      #     <script type="text/javascript" src="/javascripts/application.js"></script>
-      #     <script type="text/javascript" src="/javascripts/shop.js"></script>
-      #     <script type="text/javascript" src="/javascripts/checkout.js"></script>
-      #
-      # Note that the default javascript files will be included first. So Prototype and Scriptaculous are available to
-      # all subsequently included files.
-      #
-      # If you want Rails to search in all the subdirectories under javascripts, you should explicitly set <tt>:recursive</tt>:
-      #
-      #   javascript_include_tag :all, :recursive => true
-      #
-      # == Caching multiple javascripts into one
-      #
-      # You can also cache multiple javascripts into one file, which requires less HTTP connections to download and can better be
-      # compressed by gzip (leading to faster transfers). Caching will only happen if config.perform_caching
-      # is set to <tt>true</tt> (which is the case by default for the Rails production environment, but not for the development
-      # environment).
-      #
-      # ==== Examples
-      #   javascript_include_tag :all, :cache => true # when config.perform_caching is false =>
-      #     <script type="text/javascript" src="/javascripts/prototype.js"></script>
-      #     <script type="text/javascript" src="/javascripts/effects.js"></script>
-      #     ...
-      #     <script type="text/javascript" src="/javascripts/application.js"></script>
-      #     <script type="text/javascript" src="/javascripts/shop.js"></script>
-      #     <script type="text/javascript" src="/javascripts/checkout.js"></script>
-      #
-      #   javascript_include_tag :all, :cache => true # when config.perform_caching is true =>
-      #     <script type="text/javascript" src="/javascripts/all.js"></script>
-      #
-      #   javascript_include_tag "prototype", "cart", "checkout", :cache => "shop" # when config.perform_caching is false =>
-      #     <script type="text/javascript" src="/javascripts/prototype.js"></script>
-      #     <script type="text/javascript" src="/javascripts/cart.js"></script>
-      #     <script type="text/javascript" src="/javascripts/checkout.js"></script>
-      #
-      #   javascript_include_tag "prototype", "cart", "checkout", :cache => "shop" # when config.perform_caching is true =>
-      #     <script type="text/javascript" src="/javascripts/shop.js"></script>
-      #
-      # The <tt>:recursive</tt> option is also available for caching:
-      #
-      #   javascript_include_tag :all, :cache => true, :recursive => true
-      def javascript_include_tag(*sources)
-        options = sources.extract_options!.stringify_keys
-        concat  = options.delete("concat")
-        cache   = concat || options.delete("cache")
-        recursive = options.delete("recursive")
-
-        if concat || (config.perform_caching && cache)
-          joined_javascript_name = (cache == true ? "all" : cache) + ".js"
-          joined_javascript_path = File.join(joined_javascript_name[/^#{File::SEPARATOR}/] ? config.assets_dir : config.javascripts_dir, joined_javascript_name)
-
-          unless config.perform_caching && File.exists?(joined_javascript_path)
-            write_asset_file_contents(joined_javascript_path, compute_javascript_paths(sources, recursive))
-          end
-          javascript_src_tag(joined_javascript_name, options)
-        else
-          sources = expand_javascript_sources(sources, recursive)
-          ensure_javascript_sources!(sources) if cache
-          sources.collect { |source| javascript_src_tag(source, options) }.join("\n").html_safe
-        end
-      end
-
-      # Register one or more javascript files to be included when <tt>symbol</tt>
-      # is passed to <tt>javascript_include_tag</tt>. This method is typically intended
-      # to be called from plugin initialization to register javascript files
-      # that the plugin installed in <tt>public/javascripts</tt>.
-      #
-      #   ActionView::Helpers::AssetTagHelper.register_javascript_expansion :monkey => ["head", "body", "tail"]
-      #
-      #   javascript_include_tag :monkey # =>
-      #     <script type="text/javascript" src="/javascripts/head.js"></script>
-      #     <script type="text/javascript" src="/javascripts/body.js"></script>
-      #     <script type="text/javascript" src="/javascripts/tail.js"></script>
-      def self.register_javascript_expansion(expansions)
-        @@javascript_expansions.merge!(expansions)
-      end
-
-      # Register one or more stylesheet files to be included when <tt>symbol</tt>
-      # is passed to <tt>stylesheet_link_tag</tt>. This method is typically intended
-      # to be called from plugin initialization to register stylesheet files
-      # that the plugin installed in <tt>public/stylesheets</tt>.
-      #
-      #   ActionView::Helpers::AssetTagHelper.register_stylesheet_expansion :monkey => ["head", "body", "tail"]
-      #
-      #   stylesheet_link_tag :monkey # =>
-      #     <link href="/stylesheets/head.css"  media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/stylesheets/body.css"  media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/stylesheets/tail.css"  media="screen" rel="stylesheet" type="text/css" />
-      def self.register_stylesheet_expansion(expansions)
-        @@stylesheet_expansions.merge!(expansions)
-      end
-
-      # Computes the path to a stylesheet asset in the public stylesheets directory.
-      # If the +source+ filename has no extension, <tt>.css</tt> will be appended (except for explicit URIs).
-      # Full paths from the document root will be passed through.
-      # Used internally by +stylesheet_link_tag+ to build the stylesheet path.
-      #
-      # ==== Examples
-      #   stylesheet_path "style" # => /stylesheets/style.css
-      #   stylesheet_path "dir/style.css" # => /stylesheets/dir/style.css
-      #   stylesheet_path "/dir/style.css" # => /dir/style.css
-      #   stylesheet_path "http://www.railsapplication.com/css/style" # => http://www.railsapplication.com/css/style
-      #   stylesheet_path "http://www.railsapplication.com/css/style.css" # => http://www.railsapplication.com/css/style.css
-      def stylesheet_path(source)
-        compute_public_path(source, 'stylesheets', 'css')
-      end
-      alias_method :path_to_stylesheet, :stylesheet_path # aliased to avoid conflicts with a stylesheet_path named route
-
-      # Returns a stylesheet link tag for the sources specified as arguments. If
-      # you don't specify an extension, <tt>.css</tt> will be appended automatically.
-      # You can modify the link attributes by passing a hash as the last argument.
-      #
-      # ==== Examples
-      #   stylesheet_link_tag "style" # =>
-      #     <link href="/stylesheets/style.css" media="screen" rel="stylesheet" type="text/css" />
-      #
-      #   stylesheet_link_tag "style.css" # =>
-      #     <link href="/stylesheets/style.css" media="screen" rel="stylesheet" type="text/css" />
-      #
-      #   stylesheet_link_tag "http://www.railsapplication.com/style.css" # =>
-      #     <link href="http://www.railsapplication.com/style.css" media="screen" rel="stylesheet" type="text/css" />
-      #
-      #   stylesheet_link_tag "style", :media => "all" # =>
-      #     <link href="/stylesheets/style.css" media="all" rel="stylesheet" type="text/css" />
-      #
-      #   stylesheet_link_tag "style", :media => "print" # =>
-      #     <link href="/stylesheets/style.css" media="print" rel="stylesheet" type="text/css" />
-      #
-      #   stylesheet_link_tag "random.styles", "/css/stylish" # =>
-      #     <link href="/stylesheets/random.styles" media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/css/stylish.css" media="screen" rel="stylesheet" type="text/css" />
-      #
-      # You can also include all styles in the stylesheets directory using <tt>:all</tt> as the source:
-      #
-      #   stylesheet_link_tag :all # =>
-      #     <link href="/stylesheets/style1.css"  media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/stylesheets/styleB.css"  media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/stylesheets/styleX2.css" media="screen" rel="stylesheet" type="text/css" />
-      #
-      # If you want Rails to search in all the subdirectories under stylesheets, you should explicitly set <tt>:recursive</tt>:
-      #
-      #   stylesheet_link_tag :all, :recursive => true
-      #
-      # == Caching multiple stylesheets into one
-      #
-      # You can also cache multiple stylesheets into one file, which requires less HTTP connections and can better be
-      # compressed by gzip (leading to faster transfers). Caching will only happen if config.perform_caching
-      # is set to true (which is the case by default for the Rails production environment, but not for the development
-      # environment). Examples:
-      #
-      # ==== Examples
-      #   stylesheet_link_tag :all, :cache => true # when config.perform_caching is false =>
-      #     <link href="/stylesheets/style1.css"  media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/stylesheets/styleB.css"  media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/stylesheets/styleX2.css" media="screen" rel="stylesheet" type="text/css" />
-      #
-      #   stylesheet_link_tag :all, :cache => true # when config.perform_caching is true =>
-      #     <link href="/stylesheets/all.css"  media="screen" rel="stylesheet" type="text/css" />
-      #
-      #   stylesheet_link_tag "shop", "cart", "checkout", :cache => "payment" # when config.perform_caching is false =>
-      #     <link href="/stylesheets/shop.css"  media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/stylesheets/cart.css"  media="screen" rel="stylesheet" type="text/css" />
-      #     <link href="/stylesheets/checkout.css" media="screen" rel="stylesheet" type="text/css" />
-      #
-      #   stylesheet_link_tag "shop", "cart", "checkout", :cache => "payment" # when config.perform_caching is true =>
-      #     <link href="/stylesheets/payment.css"  media="screen" rel="stylesheet" type="text/css" />
-      #
-      # The <tt>:recursive</tt> option is also available for caching:
-      #
-      #   stylesheet_link_tag :all, :cache => true, :recursive => true
-      #
-      # To force concatenation (even in development mode) set <tt>:concat</tt> to true. This is useful if
-      # you have too many stylesheets for IE to load.
-      #
-      #   stylesheet_link_tag :all, :concat => true
-      #
-      def stylesheet_link_tag(*sources)
-        options = sources.extract_options!.stringify_keys
-        concat  = options.delete("concat")
-        cache   = concat || options.delete("cache")
-        recursive = options.delete("recursive")
-
-        if concat || (config.perform_caching && cache)
-          joined_stylesheet_name = (cache == true ? "all" : cache) + ".css"
-          joined_stylesheet_path = File.join(joined_stylesheet_name[/^#{File::SEPARATOR}/] ? config.assets_dir : config.stylesheets_dir, joined_stylesheet_name)
-
-          unless config.perform_caching && File.exists?(joined_stylesheet_path)
-            write_asset_file_contents(joined_stylesheet_path, compute_stylesheet_paths(sources, recursive))
-          end
-          stylesheet_tag(joined_stylesheet_name, options)
-        else
-          sources = expand_stylesheet_sources(sources, recursive)
-          ensure_stylesheet_sources!(sources) if cache
-          sources.collect { |source| stylesheet_tag(source, options) }.join("\n").html_safe
-        end
-      end
-
       # Web browsers cache favicons. If you just throw a <tt>favicon.ico</tt> into the document
       # root of your application and it changes later, clients that have it in their cache
       # won't see the update. Using this helper prevents that because it appends an asset ID:
@@ -546,7 +274,7 @@ module ActionView
       # The alias +path_to_image+ is provided to avoid that. Rails uses the alias internally, and
       # plugin authors are encouraged to do so.
       def image_path(source)
-        compute_public_path(source, 'images')
+        asset_paths.compute_public_path(source, 'images')
       end
       alias_method :path_to_image, :image_path # aliased to avoid conflicts with an image_path named route
 
@@ -561,7 +289,7 @@ module ActionView
       #   video_path("/trailers/hd.avi")                              # => /trailers/hd.avi
       #   video_path("http://www.railsapplication.com/vid/hd.avi") # => http://www.railsapplication.com/vid/hd.avi
       def video_path(source)
-        compute_public_path(source, 'videos')
+        asset_paths.compute_public_path(source, 'videos')
       end
       alias_method :path_to_video, :video_path # aliased to avoid conflicts with a video_path named route
 
@@ -571,12 +299,12 @@ module ActionView
       #
       # ==== Examples
       #   audio_path("horse")                                            # => /audios/horse
-      #   audio_path("horse.wav")                                        # => /audios/horse.avi
-      #   audio_path("sounds/horse.wav")                                 # => /audios/sounds/horse.avi
-      #   audio_path("/sounds/horse.wav")                                # => /sounds/horse.avi
+      #   audio_path("horse.wav")                                        # => /audios/horse.wav
+      #   audio_path("sounds/horse.wav")                                 # => /audios/sounds/horse.wav
+      #   audio_path("/sounds/horse.wav")                                # => /sounds/horse.wav
       #   audio_path("http://www.railsapplication.com/sounds/horse.wav") # => http://www.railsapplication.com/sounds/horse.wav
       def audio_path(source)
-        compute_public_path(source, 'audios')
+        asset_paths.compute_public_path(source, 'audios')
       end
       alias_method :path_to_audio, :audio_path # aliased to avoid conflicts with an audio_path named route
 
@@ -705,202 +433,8 @@ module ActionView
 
       private
 
-        def rewrite_extension?(source, dir, ext)
-          source_ext = File.extname(source)[1..-1]
-          ext && (source_ext.blank? || (ext != source_ext && File.exist?(File.join(config.assets_dir, dir, "#{source}.#{ext}"))))
-        end
-
-        def rewrite_host_and_protocol(source, has_request)
-          host = compute_asset_host(source)
-          if has_request && host.present? && !is_uri?(host)
-            host = "#{controller.request.protocol}#{host}"
-          end
-          "#{host}#{source}"
-        end
-
-        # Add the the extension +ext+ if not present. Return full URLs otherwise untouched.
-        # Prefix with <tt>/dir/</tt> if lacking a leading +/+. Account for relative URL
-        # roots. Rewrite the asset path for cache-busting asset ids. Include
-        # asset host, if configured, with the correct request protocol.
-        def compute_public_path(source, dir, ext = nil, include_host = true)
-          return source if is_uri?(source)
-
-          source += ".#{ext}" if rewrite_extension?(source, dir, ext)
-          source  = "/#{dir}/#{source}" unless source[0] == ?/
-          source = rewrite_asset_path(source, config.asset_path)
-
-          has_request = controller.respond_to?(:request)
-          if has_request && include_host && source !~ %r{^#{controller.config.relative_url_root}/}
-            source = "#{controller.config.relative_url_root}#{source}"
-          end
-          source = rewrite_host_and_protocol(source, has_request) if include_host
-
-          source
-        end
-
-        def is_uri?(path)
-          path =~ %r{^[-a-z]+://|^cid:}
-        end
-
-        # Pick an asset host for this source. Returns +nil+ if no host is set,
-        # the host if no wildcard is set, the host interpolated with the
-        # numbers 0-3 if it contains <tt>%d</tt> (the number is the source hash mod 4),
-        # or the value returned from invoking the proc if it's a proc or the value from
-        # invoking call if it's an object responding to call.
-        def compute_asset_host(source)
-          if host = config.asset_host
-            if host.is_a?(Proc) || host.respond_to?(:call)
-              case host.is_a?(Proc) ? host.arity : host.method(:call).arity
-              when 2
-                request = controller.respond_to?(:request) && controller.request
-                host.call(source, request)
-              else
-                host.call(source)
-              end
-            else
-              (host =~ /%d/) ? host % (source.hash % 4) : host
-            end
-          end
-        end
-
-        @@asset_timestamps_cache = {}
-        @@asset_timestamps_cache_guard = Mutex.new
-
-        # Use the RAILS_ASSET_ID environment variable or the source's
-        # modification time as its cache-busting asset id.
-        def rails_asset_id(source)
-          if asset_id = ENV["RAILS_ASSET_ID"]
-            asset_id
-          else
-            if @@cache_asset_timestamps && (asset_id = @@asset_timestamps_cache[source])
-              asset_id
-            else
-              path = File.join(config.assets_dir, source)
-              asset_id = File.exist?(path) ? File.mtime(path).to_i.to_s : ''
-
-              if @@cache_asset_timestamps
-                @@asset_timestamps_cache_guard.synchronize do
-                  @@asset_timestamps_cache[source] = asset_id
-                end
-              end
-
-              asset_id
-            end
-          end
-        end
-
-        # Break out the asset path rewrite in case plugins wish to put the asset id
-        # someplace other than the query string.
-        def rewrite_asset_path(source, path = nil)
-          if path && path.respond_to?(:call)
-            return path.call(source)
-          elsif path && path.is_a?(String)
-            return path % [source]
-          end
-
-          asset_id = rails_asset_id(source)
-          if asset_id.blank?
-            source
-          else
-            source + "?#{asset_id}"
-          end
-        end
-
-        def javascript_src_tag(source, options)
-          content_tag("script", "", { "type" => Mime::JS, "src" => path_to_javascript(source) }.merge(options))
-        end
-
-        def stylesheet_tag(source, options)
-          tag("link", { "rel" => "stylesheet", "type" => Mime::CSS, "media" => "screen", "href" => html_escape(path_to_stylesheet(source)) }.merge(options), false, false)
-        end
-
-        def compute_javascript_paths(*args)
-          expand_javascript_sources(*args).collect { |source| compute_public_path(source, 'javascripts', 'js', false) }
-        end
-
-        def compute_stylesheet_paths(*args)
-          expand_stylesheet_sources(*args).collect { |source| compute_public_path(source, 'stylesheets', 'css', false) }
-        end
-
-        def expand_javascript_sources(sources, recursive = false)
-          if sources.include?(:all)
-            all_javascript_files = collect_asset_files(config.javascripts_dir, ('**' if recursive), '*.js')
-            ((determine_source(:defaults, @@javascript_expansions).dup & all_javascript_files) + all_javascript_files).uniq
-          else
-            expanded_sources = sources.collect do |source|
-              determine_source(source, @@javascript_expansions)
-            end.flatten
-            expanded_sources << "application" if sources.include?(:defaults) && File.exist?(File.join(config.javascripts_dir, "application.js"))
-            expanded_sources
-          end
-        end
-
-        def expand_stylesheet_sources(sources, recursive)
-          if sources.first == :all
-            collect_asset_files(config.stylesheets_dir, ('**' if recursive), '*.css')
-          else
-            sources.collect do |source|
-              determine_source(source, @@stylesheet_expansions)
-            end.flatten
-          end
-        end
-
-        def determine_source(source, collection)
-          case source
-          when Symbol
-            collection[source] || raise(ArgumentError, "No expansion found for #{source.inspect}")
-          else
-            source
-          end
-        end
-
-        def ensure_stylesheet_sources!(sources)
-          sources.each do |source|
-            asset_file_path!(path_to_stylesheet(source))
-          end
-          return sources
-        end
-
-        def ensure_javascript_sources!(sources)
-          sources.each do |source|
-            asset_file_path!(path_to_javascript(source))
-          end
-          return sources
-        end
-
-        def join_asset_file_contents(paths)
-          paths.collect { |path| File.read(asset_file_path!(path)) }.join("\n\n")
-        end
-
-        def write_asset_file_contents(joined_asset_path, asset_paths)
-
-          FileUtils.mkdir_p(File.dirname(joined_asset_path))
-          File.atomic_write(joined_asset_path) { |cache| cache.write(join_asset_file_contents(asset_paths)) }
-
-          # Set mtime to the latest of the combined files to allow for
-          # consistent ETag without a shared filesystem.
-          mt = asset_paths.map { |p| File.mtime(asset_file_path(p)) }.max
-          File.utime(mt, mt, joined_asset_path)
-        end
-
-        def asset_file_path(path)
-          File.join(config.assets_dir, path.split('?').first)
-        end
-
-        def asset_file_path!(path)
-          unless is_uri?(path)
-            absolute_path = asset_file_path(path)
-            raise(Errno::ENOENT, "Asset file not found at '#{absolute_path}'" ) unless File.exist?(absolute_path)
-            return absolute_path
-          end
-        end
-
-        def collect_asset_files(*path)
-          dir = path.first
-
-          Dir[File.join(*path.compact)].collect do |file|
-            file[-(file.size - dir.size - 1)..-1].sub(/\.\w+$/, '')
-          end.sort
+        def asset_paths
+          @asset_paths ||= AssetPaths.new(config, controller)
         end
     end
   end
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
new file mode 100644
index 0000000000..52eb43a1cd
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb
@@ -0,0 +1,146 @@
+require 'active_support/core_ext/class/attribute'
+require 'active_support/core_ext/string/inflections'
+require 'active_support/core_ext/file'
+require 'action_view/helpers/tag_helper'
+
+module ActionView
+  module Helpers
+    module AssetTagHelper
+
+      class AssetIncludeTag
+        attr_reader :config, :asset_paths
+
+        class_attribute :expansions
+        def self.inherited(base)
+          base.expansions = { }
+        end
+
+        def initialize(config, asset_paths)
+          @config = config
+          @asset_paths = asset_paths
+        end
+
+        def asset_name
+          raise NotImplementedError
+        end
+
+        def extension
+          raise NotImplementedError
+        end
+
+        def custom_dir
+          raise NotImplementedError
+        end
+
+        def asset_tag(source, options)
+          raise NotImplementedError
+        end
+
+        def include_tag(*sources)
+          options = sources.extract_options!.stringify_keys
+          concat  = options.delete("concat")
+          cache   = concat || options.delete("cache")
+          recursive = options.delete("recursive")
+
+          if concat || (config.perform_caching && cache)
+            joined_name = (cache == true ? "all" : cache) + ".#{extension}"
+            joined_path = File.join((joined_name[/^#{File::SEPARATOR}/] ? config.assets_dir : custom_dir), joined_name)
+            unless config.perform_caching && File.exists?(joined_path)
+              write_asset_file_contents(joined_path, compute_paths(sources, recursive))
+            end
+            asset_tag(joined_name, options)
+          else
+            sources = expand_sources(sources, recursive)
+            ensure_sources!(sources) if cache
+            sources.collect { |source| asset_tag(source, options) }.join("\n").html_safe
+          end
+        end
+
+
+        private
+
+          def path_to_asset(source, include_host = true)
+            asset_paths.compute_public_path(source, asset_name.to_s.pluralize, extension, include_host)
+          end
+
+          def compute_paths(*args)
+            expand_sources(*args).collect { |source| asset_paths.compute_public_path(source, asset_name.pluralize, extension, false) }
+          end
+
+          def expand_sources(sources, recursive)
+            if sources.first == :all
+              collect_asset_files(custom_dir, ('**' if recursive), "*.#{extension}")
+            else
+              sources.inject([]) do |list, source|
+                determined_source = determine_source(source, expansions)
+                update_source_list(list, determined_source)
+              end
+            end
+          end
+
+          def update_source_list(list, source)
+            case source
+            when String
+              list.delete(source)
+              list << source
+            when Array
+              updated_sources = source - list
+              list.concat(updated_sources)
+            end
+          end
+
+          def ensure_sources!(sources)
+            sources.each do |source|
+              asset_file_path!(path_to_asset(source, false))
+            end
+          end
+
+          def collect_asset_files(*path)
+            dir = path.first
+
+            Dir[File.join(*path.compact)].collect do |file|
+              file[-(file.size - dir.size - 1)..-1].sub(/\.\w+$/, '')
+            end.sort
+          end
+
+          def determine_source(source, collection)
+            case source
+            when Symbol
+              collection[source] || raise(ArgumentError, "No expansion found for #{source.inspect}")
+            else
+              source
+            end
+          end
+
+          def join_asset_file_contents(paths)
+            paths.collect { |path| File.read(asset_file_path!(path, true)) }.join("\n\n")
+          end
+
+          def write_asset_file_contents(joined_asset_path, asset_paths)
+            FileUtils.mkdir_p(File.dirname(joined_asset_path))
+            File.atomic_write(joined_asset_path) { |cache| cache.write(join_asset_file_contents(asset_paths)) }
+
+            # Set mtime to the latest of the combined files to allow for
+            # consistent ETag without a shared filesystem.
+            mt = asset_paths.map { |p| File.mtime(asset_file_path(p)) }.max
+            File.utime(mt, mt, joined_asset_path)
+          end
+
+          def asset_file_path(path)
+            File.join(config.assets_dir, path.split('?').first)
+          end
+
+          def asset_file_path!(path, error_if_file_is_uri = false)
+            if asset_paths.is_uri?(path)
+              raise(Errno::ENOENT, "Asset file #{path} is uri and cannot be merged into single file") if error_if_file_is_uri
+            else
+              absolute_path = asset_file_path(path)
+              raise(Errno::ENOENT, "Asset file not found at '#{absolute_path}'" ) unless File.exist?(absolute_path)
+              return absolute_path
+            end
+          end
+      end
+
+    end
+  end
+end
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb
new file mode 100644
index 0000000000..014a03c54d
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/asset_paths.rb
@@ -0,0 +1,153 @@
+require 'active_support/core_ext/file'
+
+module ActionView
+  module Helpers
+    module AssetTagHelper
+
+      class AssetPaths
+        # You can enable or disable the asset tag ids cache.
+        # With the cache enabled, the asset tag helper methods will make fewer
+        # expensive file system calls (the default implementation checks the file
+        # system timestamp). However this prevents you from modifying any asset
+        # files while the server is running.
+        #
+        #   ActionView::Helpers::AssetTagHelper::AssetPaths.cache_asset_ids = false
+        mattr_accessor :cache_asset_ids
+
+        attr_reader :config, :controller
+
+        def initialize(config, controller)
+          @config = config
+          @controller = controller
+        end
+
+        # Add the extension +ext+ if not present. Return full URLs otherwise untouched.
+        # Prefix with <tt>/dir/</tt> if lacking a leading +/+. Account for relative URL
+        # roots. Rewrite the asset path for cache-busting asset ids. Include
+        # asset host, if configured, with the correct request protocol.
+        def compute_public_path(source, dir, ext = nil, include_host = true)
+          return source if is_uri?(source)
+
+          source = rewrite_extension(source, dir, ext) if ext
+          source = "/#{dir}/#{source}" unless source[0] == ?/
+          if controller.respond_to?(:env) && controller.env["action_dispatch.asset_path"]
+            source = rewrite_asset_path(source, controller.env["action_dispatch.asset_path"])
+          end
+          source = rewrite_asset_path(source, config.asset_path)
+
+          has_request = controller.respond_to?(:request)
+          source = rewrite_relative_url_root(source, controller.config.relative_url_root) if has_request && include_host
+          source = rewrite_host_and_protocol(source, has_request) if include_host
+
+          source
+        end
+
+        # Add or change an asset id in the asset id cache. This can be used
+        # for SASS on Heroku.
+        # :api: public
+        def add_to_asset_ids_cache(source, asset_id)
+          self.asset_ids_cache_guard.synchronize do
+            self.asset_ids_cache[source] = asset_id
+          end
+        end
+
+        def is_uri?(path)
+          path =~ %r{^[-a-z]+://|^cid:}
+        end
+
+        private
+
+          def rewrite_extension(source, dir, ext)
+            source_ext = File.extname(source)
+
+            source_with_ext = if source_ext.empty?
+              "#{source}.#{ext}"
+            elsif ext != source_ext[1..-1]
+              with_ext = "#{source}.#{ext}"
+              with_ext if File.exist?(File.join(config.assets_dir, dir, with_ext))
+            end
+
+            source_with_ext || source
+          end
+
+          # Break out the asset path rewrite in case plugins wish to put the asset id
+          # someplace other than the query string.
+          def rewrite_asset_path(source, path = nil)
+            if path && path.respond_to?(:call)
+              return path.call(source)
+            elsif path && path.is_a?(String)
+              return path % [source]
+            end
+
+            asset_id = rails_asset_id(source)
+            if asset_id.empty?
+              source
+            else
+              "#{source}?#{asset_id}"
+            end
+          end
+
+          mattr_accessor :asset_ids_cache
+          self.asset_ids_cache = {}
+
+          mattr_accessor :asset_ids_cache_guard
+          self.asset_ids_cache_guard = Mutex.new
+
+          # Use the RAILS_ASSET_ID environment variable or the source's
+          # modification time as its cache-busting asset id.
+          def rails_asset_id(source)
+            if asset_id = ENV["RAILS_ASSET_ID"]
+              asset_id
+            else
+              if self.cache_asset_ids && (asset_id = self.asset_ids_cache[source])
+                asset_id
+              else
+                path = File.join(config.assets_dir, source)
+                asset_id = File.exist?(path) ? File.mtime(path).to_i.to_s : ''
+
+                if self.cache_asset_ids
+                  add_to_asset_ids_cache(source, asset_id)
+                end
+
+                asset_id
+              end
+            end
+          end
+
+          def rewrite_relative_url_root(source, relative_url_root)
+            relative_url_root && !source.starts_with?("#{relative_url_root}/") ? "#{relative_url_root}#{source}" : source
+          end
+
+          def rewrite_host_and_protocol(source, has_request)
+            host = compute_asset_host(source)
+            if has_request && host && !is_uri?(host)
+              host = "#{controller.request.protocol}#{host}"
+            end
+            "#{host}#{source}"
+          end
+
+          # Pick an asset host for this source. Returns +nil+ if no host is set,
+          # the host if no wildcard is set, the host interpolated with the
+          # numbers 0-3 if it contains <tt>%d</tt> (the number is the source hash mod 4),
+          # or the value returned from invoking the proc if it's a proc or the value from
+          # invoking call if it's an object responding to call.
+          def compute_asset_host(source)
+            if host = config.asset_host
+              if host.is_a?(Proc) || host.respond_to?(:call)
+                case host.is_a?(Proc) ? host.arity : host.method(:call).arity
+                when 2
+                  request = controller.respond_to?(:request) && controller.request
+                  host.call(source, request)
+                else
+                  host.call(source)
+                end
+              else
+                (host =~ /%d/) ? host % (source.hash % 4) : host
+              end
+            end
+          end
+      end
+
+    end
+  end
+end
\ No newline at end of file
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/javascript_tag_helpers.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/javascript_tag_helpers.rb
new file mode 100644
index 0000000000..82bbfcc7d2
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/javascript_tag_helpers.rb
@@ -0,0 +1,184 @@
+require 'active_support/concern'
+require 'active_support/core_ext/file'
+require 'action_view/helpers/tag_helper'
+require 'action_view/helpers/asset_tag_helpers/asset_include_tag'
+
+module ActionView
+  module Helpers
+    module AssetTagHelper
+
+      class JavascriptIncludeTag < AssetIncludeTag
+        include TagHelper
+
+        def asset_name
+          'javascript'
+        end
+
+        def extension
+          'js'
+        end
+
+        def asset_tag(source, options)
+          content_tag("script", "", { "type" => Mime::JS, "src" => path_to_asset(source) }.merge(options))
+        end
+
+        def custom_dir
+          config.javascripts_dir
+        end
+
+        private
+
+          def expand_sources(sources, recursive = false)
+            if sources.include?(:all)
+              all_asset_files = (collect_asset_files(custom_dir, ('**' if recursive), "*.#{extension}") - ['application']) << 'application'
+              ((determine_source(:defaults, expansions).dup & all_asset_files) + all_asset_files).uniq
+            else
+              expanded_sources = sources.inject([]) do |list, source|
+                determined_source = determine_source(source, expansions)
+                update_source_list(list, determined_source)
+              end
+              add_application_js(expanded_sources, sources)
+              expanded_sources
+            end
+          end
+
+          def add_application_js(expanded_sources, sources)
+            if sources.include?(:defaults) && File.exist?(File.join(custom_dir, "application.#{extension}"))
+              expanded_sources.delete('application')
+              expanded_sources << "application"
+            end
+          end
+      end
+
+
+      module JavascriptTagHelpers
+        extend ActiveSupport::Concern
+
+        module ClassMethods
+          # Register one or more javascript files to be included when <tt>symbol</tt>
+          # is passed to <tt>javascript_include_tag</tt>. This method is typically intended
+          # to be called from plugin initialization to register javascript files
+          # that the plugin installed in <tt>public/javascripts</tt>.
+          #
+          #   ActionView::Helpers::AssetTagHelper.register_javascript_expansion :monkey => ["head", "body", "tail"]
+          #
+          #   javascript_include_tag :monkey # =>
+          #     <script type="text/javascript" src="/javascripts/head.js"></script>
+          #     <script type="text/javascript" src="/javascripts/body.js"></script>
+          #     <script type="text/javascript" src="/javascripts/tail.js"></script>
+          def register_javascript_expansion(expansions)
+            js_expansions = JavascriptIncludeTag.expansions
+            expansions.each do |key, values|
+              js_expansions[key] = (js_expansions[key] || []) | Array(values)
+            end
+          end
+        end
+
+        # Computes the path to a javascript asset in the public javascripts directory.
+        # If the +source+ filename has no extension, .js will be appended (except for explicit URIs)
+        # Full paths from the document root will be passed through.
+        # Used internally by javascript_include_tag to build the script path.
+        #
+        # ==== Examples
+        #   javascript_path "xmlhr" # => /javascripts/xmlhr.js
+        #   javascript_path "dir/xmlhr.js" # => /javascripts/dir/xmlhr.js
+        #   javascript_path "/dir/xmlhr" # => /dir/xmlhr.js
+        #   javascript_path "http://www.railsapplication.com/js/xmlhr" # => http://www.railsapplication.com/js/xmlhr
+        #   javascript_path "http://www.railsapplication.com/js/xmlhr.js" # => http://www.railsapplication.com/js/xmlhr.js
+        def javascript_path(source)
+          asset_paths.compute_public_path(source, 'javascripts', 'js')
+        end
+        alias_method :path_to_javascript, :javascript_path # aliased to avoid conflicts with a javascript_path named route
+
+        # Returns an HTML script tag for each of the +sources+ provided. You
+        # can pass in the filename (.js extension is optional) of JavaScript files
+        # that exist in your <tt>public/javascripts</tt> directory for inclusion into the
+        # current page or you can pass the full path relative to your document
+        # root. To include the Prototype and Scriptaculous JavaScript libraries in
+        # your application, pass <tt>:defaults</tt> as the source. When using
+        # <tt>:defaults</tt>, if an <tt>application.js</tt> file exists in
+        # <tt>public/javascripts</tt> it will be included as well. You can modify the
+        # HTML attributes of the script tag by passing a hash as the last argument.
+        #
+        # ==== Examples
+        #   javascript_include_tag "xmlhr" # =>
+        #     <script type="text/javascript" src="/javascripts/xmlhr.js?1284139606"></script>
+        #
+        #   javascript_include_tag "xmlhr.js" # =>
+        #     <script type="text/javascript" src="/javascripts/xmlhr.js?1284139606"></script>
+        #
+        #   javascript_include_tag "common.javascript", "/elsewhere/cools" # =>
+        #     <script type="text/javascript" src="/javascripts/common.javascript?1284139606"></script>
+        #     <script type="text/javascript" src="/elsewhere/cools.js?1423139606"></script>
+        #
+        #   javascript_include_tag "http://www.railsapplication.com/xmlhr" # =>
+        #     <script type="text/javascript" src="http://www.railsapplication.com/xmlhr.js?1284139606"></script>
+        #
+        #   javascript_include_tag "http://www.railsapplication.com/xmlhr.js" # =>
+        #     <script type="text/javascript" src="http://www.railsapplication.com/xmlhr.js?1284139606"></script>
+        #
+        #   javascript_include_tag :defaults # =>
+        #     <script type="text/javascript" src="/javascripts/prototype.js?1284139606"></script>
+        #     <script type="text/javascript" src="/javascripts/effects.js?1284139606"></script>
+        #     ...
+        #     <script type="text/javascript" src="/javascripts/application.js?1284139606"></script>
+        #
+        # * = The application.js file is only referenced if it exists
+        #
+        # You can also include all javascripts in the +javascripts+ directory using <tt>:all</tt> as the source:
+        #
+        #   javascript_include_tag :all # =>
+        #     <script type="text/javascript" src="/javascripts/prototype.js?1284139606"></script>
+        #     <script type="text/javascript" src="/javascripts/effects.js?1284139606"></script>
+        #     ...
+        #     <script type="text/javascript" src="/javascripts/application.js?1284139606"></script>
+        #     <script type="text/javascript" src="/javascripts/shop.js?1284139606"></script>
+        #     <script type="text/javascript" src="/javascripts/checkout.js?1284139606"></script>
+        #
+        # Note that the default javascript files will be included first. So Prototype and Scriptaculous are available to
+        # all subsequently included files.
+        #
+        # If you want Rails to search in all the subdirectories under javascripts, you should explicitly set <tt>:recursive</tt>:
+        #
+        #   javascript_include_tag :all, :recursive => true
+        #
+        # == Caching multiple javascripts into one
+        #
+        # You can also cache multiple javascripts into one file, which requires less HTTP connections to download and can better be
+        # compressed by gzip (leading to faster transfers). Caching will only happen if config.perform_caching
+        # is set to <tt>true</tt> (which is the case by default for the Rails production environment, but not for the development
+        # environment).
+        #
+        # ==== Examples
+        #   javascript_include_tag :all, :cache => true # when config.perform_caching is false =>
+        #     <script type="text/javascript" src="/javascripts/prototype.js?1284139606"></script>
+        #     <script type="text/javascript" src="/javascripts/effects.js?1284139606"></script>
+        #     ...
+        #     <script type="text/javascript" src="/javascripts/application.js?1284139606"></script>
+        #     <script type="text/javascript" src="/javascripts/shop.js?1284139606"></script>
+        #     <script type="text/javascript" src="/javascripts/checkout.js?1284139606"></script>
+        #
+        #   javascript_include_tag :all, :cache => true # when config.perform_caching is true =>
+        #     <script type="text/javascript" src="/javascripts/all.js?1344139789"></script>
+        #
+        #   javascript_include_tag "prototype", "cart", "checkout", :cache => "shop" # when config.perform_caching is false =>
+        #     <script type="text/javascript" src="/javascripts/prototype.js?1284139606"></script>
+        #     <script type="text/javascript" src="/javascripts/cart.js?1289139157"></script>
+        #     <script type="text/javascript" src="/javascripts/checkout.js?1299139816"></script>
+        #
+        #   javascript_include_tag "prototype", "cart", "checkout", :cache => "shop" # when config.perform_caching is true =>
+        #     <script type="text/javascript" src="/javascripts/shop.js?1299139816"></script>
+        #
+        # The <tt>:recursive</tt> option is also available for caching:
+        #
+        #   javascript_include_tag :all, :cache => true, :recursive => true
+        def javascript_include_tag(*sources)
+          @javascript_include ||= JavascriptIncludeTag.new(config, asset_paths)
+          @javascript_include.include_tag(*sources)
+        end
+
+      end
+
+    end
+  end
+end
diff --git a/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb b/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
new file mode 100644
index 0000000000..a48c87b49a
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb
@@ -0,0 +1,147 @@
+require 'active_support/concern'
+require 'active_support/core_ext/file'
+require 'action_view/helpers/tag_helper'
+require 'action_view/helpers/asset_tag_helpers/asset_include_tag'
+
+module ActionView
+  module Helpers
+    module AssetTagHelper
+
+      class StylesheetIncludeTag < AssetIncludeTag
+        include TagHelper
+
+        def asset_name
+          'stylesheet'
+        end
+
+        def extension
+          'css'
+        end
+
+        def asset_tag(source, options)
+          tag("link", { "rel" => "stylesheet", "type" => Mime::CSS, "media" => "screen", "href" => ERB::Util.html_escape(path_to_asset(source)) }.merge(options), false, false)
+        end
+
+        def custom_dir
+          config.stylesheets_dir
+        end
+      end
+
+
+      module StylesheetTagHelpers
+        extend ActiveSupport::Concern
+
+        module ClassMethods
+          # Register one or more stylesheet files to be included when <tt>symbol</tt>
+          # is passed to <tt>stylesheet_link_tag</tt>. This method is typically intended
+          # to be called from plugin initialization to register stylesheet files
+          # that the plugin installed in <tt>public/stylesheets</tt>.
+          #
+          #   ActionView::Helpers::AssetTagHelper.register_stylesheet_expansion :monkey => ["head", "body", "tail"]
+          #
+          #   stylesheet_link_tag :monkey # =>
+          #     <link href="/stylesheets/head.css"  media="screen" rel="stylesheet" type="text/css" />
+          #     <link href="/stylesheets/body.css"  media="screen" rel="stylesheet" type="text/css" />
+          #     <link href="/stylesheets/tail.css"  media="screen" rel="stylesheet" type="text/css" />
+          def register_stylesheet_expansion(expansions)
+            style_expansions = StylesheetIncludeTag.expansions
+            expansions.each do |key, values|
+              style_expansions[key] = (style_expansions[key] || []) | Array(values)
+            end
+          end
+        end
+
+        # Computes the path to a stylesheet asset in the public stylesheets directory.
+        # If the +source+ filename has no extension, <tt>.css</tt> will be appended (except for explicit URIs).
+        # Full paths from the document root will be passed through.
+        # Used internally by +stylesheet_link_tag+ to build the stylesheet path.
+        #
+        # ==== Examples
+        #   stylesheet_path "style" # => /stylesheets/style.css
+        #   stylesheet_path "dir/style.css" # => /stylesheets/dir/style.css
+        #   stylesheet_path "/dir/style.css" # => /dir/style.css
+        #   stylesheet_path "http://www.railsapplication.com/css/style" # => http://www.railsapplication.com/css/style
+        #   stylesheet_path "http://www.railsapplication.com/css/style.css" # => http://www.railsapplication.com/css/style.css
+        def stylesheet_path(source)
+          asset_paths.compute_public_path(source, 'stylesheets', 'css')
+        end
+        alias_method :path_to_stylesheet, :stylesheet_path # aliased to avoid conflicts with a stylesheet_path named route
+
+        # Returns a stylesheet link tag for the sources specified as arguments. If
+        # you don't specify an extension, <tt>.css</tt> will be appended automatically.
+        # You can modify the link attributes by passing a hash as the last argument.
+        #
+        # ==== Examples
+        #   stylesheet_link_tag "style" # =>
+        #     <link href="/stylesheets/style.css" media="screen" rel="stylesheet" type="text/css" />
+        #
+        #   stylesheet_link_tag "style.css" # =>
+        #     <link href="/stylesheets/style.css" media="screen" rel="stylesheet" type="text/css" />
+        #
+        #   stylesheet_link_tag "http://www.railsapplication.com/style.css" # =>
+        #     <link href="http://www.railsapplication.com/style.css" media="screen" rel="stylesheet" type="text/css" />
+        #
+        #   stylesheet_link_tag "style", :media => "all" # =>
+        #     <link href="/stylesheets/style.css" media="all" rel="stylesheet" type="text/css" />
+        #
+        #   stylesheet_link_tag "style", :media => "print" # =>
+        #     <link href="/stylesheets/style.css" media="print" rel="stylesheet" type="text/css" />
+        #
+        #   stylesheet_link_tag "random.styles", "/css/stylish" # =>
+        #     <link href="/stylesheets/random.styles" media="screen" rel="stylesheet" type="text/css" />
+        #     <link href="/css/stylish.css" media="screen" rel="stylesheet" type="text/css" />
+        #
+        # You can also include all styles in the stylesheets directory using <tt>:all</tt> as the source:
+        #
+        #   stylesheet_link_tag :all # =>
+        #     <link href="/stylesheets/style1.css"  media="screen" rel="stylesheet" type="text/css" />
+        #     <link href="/stylesheets/styleB.css"  media="screen" rel="stylesheet" type="text/css" />
+        #     <link href="/stylesheets/styleX2.css" media="screen" rel="stylesheet" type="text/css" />
+        #
+        # If you want Rails to search in all the subdirectories under stylesheets, you should explicitly set <tt>:recursive</tt>:
+        #
+        #   stylesheet_link_tag :all, :recursive => true
+        #
+        # == Caching multiple stylesheets into one
+        #
+        # You can also cache multiple stylesheets into one file, which requires less HTTP connections and can better be
+        # compressed by gzip (leading to faster transfers). Caching will only happen if config.perform_caching
+        # is set to true (which is the case by default for the Rails production environment, but not for the development
+        # environment). Examples:
+        #
+        # ==== Examples
+        #   stylesheet_link_tag :all, :cache => true # when config.perform_caching is false =>
+        #     <link href="/stylesheets/style1.css"  media="screen" rel="stylesheet" type="text/css" />
+        #     <link href="/stylesheets/styleB.css"  media="screen" rel="stylesheet" type="text/css" />
+        #     <link href="/stylesheets/styleX2.css" media="screen" rel="stylesheet" type="text/css" />
+        #
+        #   stylesheet_link_tag :all, :cache => true # when config.perform_caching is true =>
+        #     <link href="/stylesheets/all.css"  media="screen" rel="stylesheet" type="text/css" />
+        #
+        #   stylesheet_link_tag "shop", "cart", "checkout", :cache => "payment" # when config.perform_caching is false =>
+        #     <link href="/stylesheets/shop.css"  media="screen" rel="stylesheet" type="text/css" />
+        #     <link href="/stylesheets/cart.css"  media="screen" rel="stylesheet" type="text/css" />
+        #     <link href="/stylesheets/checkout.css" media="screen" rel="stylesheet" type="text/css" />
+        #
+        #   stylesheet_link_tag "shop", "cart", "checkout", :cache => "payment" # when config.perform_caching is true =>
+        #     <link href="/stylesheets/payment.css"  media="screen" rel="stylesheet" type="text/css" />
+        #
+        # The <tt>:recursive</tt> option is also available for caching:
+        #
+        #   stylesheet_link_tag :all, :cache => true, :recursive => true
+        #
+        # To force concatenation (even in development mode) set <tt>:concat</tt> to true. This is useful if
+        # you have too many stylesheets for IE to load.
+        #
+        #   stylesheet_link_tag :all, :concat => true
+        #
+        def stylesheet_link_tag(*sources)
+          @stylesheet_include ||= StylesheetIncludeTag.new(config, asset_paths)
+          @stylesheet_include.include_tag(*sources)
+        end
+
+      end
+
+    end
+  end
+end
diff --git a/actionpack/lib/action_view/helpers/atom_feed_helper.rb b/actionpack/lib/action_view/helpers/atom_feed_helper.rb
index 8e7cf2e701..db9d7a08ff 100644
--- a/actionpack/lib/action_view/helpers/atom_feed_helper.rb
+++ b/actionpack/lib/action_view/helpers/atom_feed_helper.rb
@@ -51,7 +51,7 @@ module ActionView
       # * <tt>:language</tt>: Defaults to "en-US".
       # * <tt>:root_url</tt>: The HTML alternative that this feed is doubling for. Defaults to / on the current host.
       # * <tt>:url</tt>: The URL for this feed. Defaults to the current URL.
-      # * <tt>:id</tt>: The id for this feed. Defaults to "tag:#{request.host},#{options[:schema_date]}:#{request.request_uri.split(".")[0]}"
+      # * <tt>:id</tt>: The id for this feed. Defaults to "tag:#{request.host},#{options[:schema_date]}:#{request.fullpath.split(".")[0]}"
       # * <tt>:schema_date</tt>: The date at which the tag scheme for the feed was first used. A good default is the year you
       #   created the feed. See http://feedvalidator.org/docs/error/InvalidTAG.html for more information. If not specified,
       #   2005 is used (as an "I don't care" value).
diff --git a/actionpack/lib/action_view/helpers/cache_helper.rb b/actionpack/lib/action_view/helpers/cache_helper.rb
index f544a9d147..385378ea29 100644
--- a/actionpack/lib/action_view/helpers/cache_helper.rb
+++ b/actionpack/lib/action_view/helpers/cache_helper.rb
@@ -2,31 +2,29 @@ module ActionView
   # = Action View Cache Helper
   module Helpers
     module CacheHelper
-      # This helper to exposes a method for caching of view fragments.
-      # See ActionController::Caching::Fragments for usage instructions.
+      # This helper exposes a method for caching fragments of a view 
+      # rather than an entire action or page.  This technique is useful
+      # caching pieces like menus, lists of newstopics, static HTML
+      # fragments, and so on. This method takes a block that contains
+      # the content you wish to cache. 
       #
-      # A method for caching fragments of a view rather than an entire
-      # action or page.  This technique is useful caching pieces like
-      # menus, lists of news topics, static HTML fragments, and so on.
-      # This method takes a block that contains the content you wish
-      # to cache.  See ActionController::Caching::Fragments for more
-      # information.
+      # See ActionController::Caching::Fragments for usage instructions.
       #
       # ==== Examples
-      # If you wanted to cache a navigation menu, you could do the
-      # following.
+      # If you want to cache a navigation menu, you can do following:
       #
       #   <% cache do %>
       #     <%= render :partial => "menu" %>
       #   <% end %>
       #
-      # You can also cache static content...
+      # You can also cache static content:
       #
       #   <% cache do %>
       #      <p>Hello users!  Welcome to our website!</p>
       #   <% end %>
       #
-      # ...and static content mixed with RHTML content.
+      # Static content with embedded ruby content can be cached as 
+      # well:
       #
       #    <% cache do %>
       #      Topics:
@@ -46,8 +44,8 @@ module ActionView
     private
       # TODO: Create an object that has caching read/write on it
       def fragment_for(name = {}, options = nil, &block) #:nodoc:
-        if controller.fragment_exist?(name, options)
-          controller.read_fragment(name, options)
+        if fragment = controller.read_fragment(name, options)
+          fragment
         else
           # VIEW TODO: Make #capture usable outside of ERB
           # This dance is needed because Builder can't use capture
diff --git a/actionpack/lib/action_view/helpers/capture_helper.rb b/actionpack/lib/action_view/helpers/capture_helper.rb
index 89e95e8694..c88bd1efd5 100644
--- a/actionpack/lib/action_view/helpers/capture_helper.rb
+++ b/actionpack/lib/action_view/helpers/capture_helper.rb
@@ -1,4 +1,5 @@
 require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/string/output_safety'
 
 module ActionView
   # = Action View Capture Helper
@@ -38,7 +39,7 @@ module ActionView
         value = nil
         buffer = with_output_buffer { value = yield(*args) }
         if string = buffer.presence || value and string.is_a?(String)
-          NonConcattingString.new(string)
+          ERB::Util.html_escape string
         end
       end
 
@@ -106,7 +107,7 @@ module ActionView
       #     <%= javascript_include_tag :defaults %>
       #   <% end %>
       #
-      # That will place <script> tags for Prototype, Scriptaculous, and application.js (if it exists)
+      # That will place <tt>script</tt> tags for Prototype, Scriptaculous, and application.js (if it exists)
       # on the page; this technique is useful if you'll only be using these scripts in a few views.
       #
       # Note that content_for concatenates the blocks it is given for a particular
diff --git a/actionpack/lib/action_view/helpers/csrf_helper.rb b/actionpack/lib/action_view/helpers/csrf_helper.rb
index 3d03f6aac6..65c8debc76 100644
--- a/actionpack/lib/action_view/helpers/csrf_helper.rb
+++ b/actionpack/lib/action_view/helpers/csrf_helper.rb
@@ -1,14 +1,30 @@
+require 'active_support/core_ext/string/strip'
+
 module ActionView
   # = Action View CSRF Helper
   module Helpers
     module CsrfHelper
-      # Returns a meta tag with the cross-site request forgery protection token
-      # for forms to use. Place this in your head.
-      def csrf_meta_tag
-        if protect_against_forgery?
-          %(<meta name="csrf-param" content="#{Rack::Utils.escape_html(request_forgery_protection_token)}"/>\n<meta name="csrf-token" content="#{Rack::Utils.escape_html(form_authenticity_token)}"/>).html_safe
-        end
+      # Returns meta tags "csrf-param" and "csrf-token" with the name of the cross-site
+      # request forgery protection parameter and token, respectively.
+      #
+      #   <head>
+      #     <%= csrf_meta_tags %>
+      #   </head>
+      #
+      # These are used to generate the dynamic forms that implement non-remote links with
+      # <tt>:method</tt>.
+      #
+      # Note that regular forms generate hidden fields, and that Ajax calls are whitelisted,
+      # so they do not use these tags.
+      def csrf_meta_tags
+        <<-METAS.strip_heredoc.chomp.html_safe if protect_against_forgery?
+          <meta name="csrf-param" content="#{Rack::Utils.escape_html(request_forgery_protection_token)}"/>
+          <meta name="csrf-token" content="#{Rack::Utils.escape_html(form_authenticity_token)}"/>
+        METAS
       end
+
+      # For backwards compatibility.
+      alias csrf_meta_tag csrf_meta_tags
     end
   end
 end
diff --git a/actionpack/lib/action_view/helpers/date_helper.rb b/actionpack/lib/action_view/helpers/date_helper.rb
index 8050669adb..6cd1565031 100644
--- a/actionpack/lib/action_view/helpers/date_helper.rb
+++ b/actionpack/lib/action_view/helpers/date_helper.rb
@@ -1,6 +1,8 @@
-require "date"
+require 'date'
 require 'action_view/helpers/tag_helper'
+require 'active_support/core_ext/date/conversions'
 require 'active_support/core_ext/hash/slice'
+require 'active_support/core_ext/object/with_options'
 
 module ActionView
   module Helpers
@@ -214,21 +216,10 @@ module ActionView
       #   # Creates a time select tag that, when POSTed, will be stored in the post variable in the sunrise attribute
       #   time_select("post", "sunrise")
       #
-      #   # Creates a time select tag that, when POSTed, will be stored in the order variable in the submitted
-      #   # attribute
-      #   time_select("order", "submitted")
-      #
-      #   # Creates a time select tag that, when POSTed, will be stored in the mail variable in the sent_at attribute
-      #   time_select("mail", "sent_at")
-      #
       #   # Creates a time select tag with a seconds field that, when POSTed, will be stored in the post variables in
       #   # the sunrise attribute.
       #   time_select("post", "start_time", :include_seconds => true)
       #
-      #   # Creates a time select tag with a seconds field that, when POSTed, will be stored in the entry variables in
-      #   # the submission_time attribute.
-      #   time_select("entry", "submission_time", :include_seconds => true)
-      #
       #   # You can set the :minute_step to 15 which will give you: 00, 15, 30 and 45.
       #   time_select 'game', 'game_time', {:minute_step => 15}
       #
@@ -576,6 +567,27 @@ module ActionView
       def select_year(date, options = {}, html_options = {})
         DateTimeSelector.new(date, options, html_options).select_year
       end
+
+      # Returns an html time tag for the given date or time.
+      #
+      # ==== Examples
+      #   time_tag Date.today  # =>
+      #     <time datetime="2010-11-04">November 04, 2010</time>
+      #   time_tag Time.now  # =>
+      #     <time datetime="2010-11-04T17:55:45+01:00">November 04, 2010 17:55</time>
+      #   time_tag Date.yesterday, 'Yesterday'  # =>
+      #     <time datetime="2010-11-03">Yesterday</time>
+      #   time_tag Date.today, :pubdate => true  # =>
+      #     <time datetime="2010-11-04" pubdate="pubdate">November 04, 2010</time>
+      #
+      def time_tag(date_or_time, *args)
+        options  = args.extract_options!
+        format   = options.delete(:format) || :long
+        content  = args.first || I18n.l(date_or_time, :format => format)
+        datetime = date_or_time.acts_like?(:time) ? date_or_time.xmlschema : date_or_time.rfc3339
+
+        content_tag(:time, content, options.reverse_merge(:datetime => datetime))
+      end
     end
 
     class DateTimeSelector #:nodoc:
@@ -605,7 +617,7 @@ module ActionView
         @options[:discard_second] ||= true unless @options[:include_seconds] && !@options[:discard_minute]
 
         # If the day is hidden and the month is visible, the day should be set to the 1st so all month choices are
-        # valid (otherwise it could be 31 and february wouldn't be a valid date)
+        # valid (otherwise it could be 31 and February wouldn't be a valid date)
         if @datetime && @options[:discard_day] && !@options[:discard_month]
           @datetime = @datetime.change(:day => 1)
         end
@@ -632,7 +644,7 @@ module ActionView
         @options[:discard_day]    ||= true if @options[:discard_month] || !order.include?(:day)
 
         # If the day is hidden and the month is visible, the day should be set to the 1st so all month choices are
-        # valid (otherwise it could be 31 and february wouldn't be a valid date)
+        # valid (otherwise it could be 31 and February wouldn't be a valid date)
         if @datetime && @options[:discard_day] && !@options[:discard_month]
           @datetime = @datetime.change(:day => 1)
         end
@@ -751,10 +763,8 @@ module ActionView
         #  => [nil, "Jan", "Feb", "Mar", "Apr", "May", "Jun",
         #           "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
         def translated_month_names
-          begin
-            key = @options[:use_short_month] ? :'date.abbr_month_names' : :'date.month_names'
-            I18n.translate(key, :locale => @options[:locale])
-          end
+          key = @options[:use_short_month] ? :'date.abbr_month_names' : :'date.month_names'
+          I18n.translate(key, :locale => @options[:locale])
         end
 
         # Lookup month name for number
@@ -781,9 +791,7 @@ module ActionView
         memoize :date_order
 
         def translated_date_order
-          begin
-            I18n.translate(:'date.order', :locale => @options[:locale]) || []
-          end
+          I18n.translate(:'date.order', :locale => @options[:locale]) || []
         end
 
         # Build full select tag from date type and options
@@ -837,15 +845,14 @@ module ActionView
         #  prompt_option_tag(:month, :prompt => 'Select month')
         #  => "<option value="">Select month</option>"
         def prompt_option_tag(type, options)
-          default_options = {:year => false, :month => false, :day => false, :hour => false, :minute => false, :second => false}
-
-          case options
-          when Hash
-            prompt = default_options.merge(options)[type.to_sym]
-          when String
-            prompt = options
-          else
-            prompt = I18n.translate(('datetime.prompts.' + type.to_s).to_sym, :locale => @options[:locale])
+          prompt = case options
+            when Hash
+              default_options = {:year => false, :month => false, :day => false, :hour => false, :minute => false, :second => false}
+              default_options.merge!(options)[type.to_sym]
+            when String
+              options
+            else
+              I18n.translate(:"datetime.prompts.#{type}", :locale => @options[:locale])
           end
 
           prompt ? content_tag(:option, prompt, :value => '') : ''
@@ -897,6 +904,8 @@ module ActionView
         # Returns the separator for a given datetime component
         def separator(type)
           case type
+            when :year
+              @options[:discard_year] ? "" : @options[:date_separator]
             when :month
               @options[:discard_month] ? "" : @options[:date_separator]
             when :day
@@ -927,6 +936,7 @@ module ActionView
       private
         def datetime_selector(options, html_options)
           datetime = value(object) || default_datetime(options)
+          @auto_index ||= nil
 
           options = options.dup
           options[:field_name]           = @method_name
diff --git a/actionpack/lib/action_view/helpers/debug_helper.rb b/actionpack/lib/action_view/helpers/debug_helper.rb
index 1491cb073f..cd67851642 100644
--- a/actionpack/lib/action_view/helpers/debug_helper.rb
+++ b/actionpack/lib/action_view/helpers/debug_helper.rb
@@ -1,6 +1,6 @@
 module ActionView
   # = Action View Debug Helper
-  # 
+  #
   # Provides a set of methods for making it easier to debug Rails objects.
   module Helpers
     module DebugHelper
diff --git a/actionpack/lib/action_view/helpers/form_helper.rb b/actionpack/lib/action_view/helpers/form_helper.rb
index ebe055bebd..48abf119f1 100644
--- a/actionpack/lib/action_view/helpers/form_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_helper.rb
@@ -2,9 +2,11 @@ require 'cgi'
 require 'action_view/helpers/date_helper'
 require 'action_view/helpers/tag_helper'
 require 'action_view/helpers/form_tag_helper'
-require 'active_support/core_ext/class/inheritable_attributes'
+require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/hash/slice'
 require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/string/output_safety'
+require 'active_support/core_ext/array/extract_options'
 
 module ActionView
   # = Action View Form Helpers
@@ -111,6 +113,7 @@ module ActionView
       #     <%= f.text_field :version %><br />
       #     <%= f.label :author, 'Author' %>:
       #     <%= f.text_field :author %><br />
+      #     <%= f.submit %>
       #   <% end %>
       #
       # There, +form_for+ is able to generate the rest of RESTful form
@@ -128,6 +131,7 @@ module ActionView
       #     Last name : <%= f.text_field :last_name %><br />
       #     Biography : <%= f.text_area :biography %><br />
       #     Admin?    : <%= f.check_box :admin %><br />
+      #     <%= f.submit %>
       #   <% end %>
       #
       # There, the argument is a symbol or string with the name of the
@@ -159,6 +163,7 @@ module ActionView
       #     Last name : <%= f.text_field :last_name %>
       #     Biography : <%= text_area :person, :biography %>
       #     Admin?    : <%= check_box_tag "person[admin]", @person.company.admin? %>
+      #     <%= f.submit %>
       #   <% end %>
       #
       # This also works for the methods in FormOptionHelper and DateHelper that
@@ -202,10 +207,16 @@ module ActionView
       #     ...
       #   <% end %>
       #
+      # You can also set the answer format, like this:
+      #
+      #   <%= form_for(@post, :format => :json) do |f| %>
+      #     ...
+      #   <% end %>
+      #
       # If you have an object that needs to be represented as a different
       # parameter, like a Client that acts as a Person:
       #
-      #   <%= form_for(@post, :as => :client do |f| %>
+      #   <%= form_for(@post, :as => :client) do |f| %>
       #     ...
       #   <% end %>
       #
@@ -222,8 +233,8 @@ module ActionView
       #    ...
       #   <% end %>
       #
-      # Where +@document = Document.find(params[:id])+ and
-      # +@comment = Comment.new+.
+      # Where <tt>@document = Document.find(params[:id])</tt> and
+      # <tt>@comment = Comment.new</tt>.
       #
       # === Unobtrusive JavaScript
       #
@@ -252,6 +263,24 @@ module ActionView
       #     ...
       #   </form>
       #
+      # === Removing hidden model id's
+      #
+      # The form_for method automatically includes the model id as a hidden field in the form.
+      # This is used to maintain the correlation between the form data and its associated model.
+      # Some ORM systems do not use IDs on nested models so in this case you want to be able
+      # to disable the hidden id.
+      #
+      # In the following example the Post model has many Comments stored within it in a NoSQL database,
+      # thus there is no primary key for comments.
+      #
+      # Example:
+      #
+      #   <%= form(@post) do |f| %>
+      #     <% f.fields_for(:comments, :include_id => false) do |cf| %>
+      #       ...
+      #     <% end %>
+      #   <% end %>
+      #
       # === Customized form builders
       #
       # You can also build forms using a customized FormBuilder class. Subclass
@@ -262,8 +291,9 @@ module ActionView
       #   <%= form_for @person, :url => { :action => "create" }, :builder => LabellingFormBuilder do |f| %>
       #     <%= f.text_field :first_name %>
       #     <%= f.text_field :last_name %>
-      #     <%= text_area :person, :biography %>
-      #     <%= check_box_tag "person[admin]", @person.company.admin? %>
+      #     <%= f.text_area :biography %>
+      #     <%= f.check_box :admin %>
+      #     <%= f.submit %>
       #   <% end %>
       #
       # In this case, if you use this:
@@ -287,31 +317,46 @@ module ActionView
       #
       # If you don't need to attach a form to a model instance, then check out
       # FormTagHelper#form_tag.
-      def form_for(record_or_name_or_array, *args, &proc)
+      #
+      # === Form to external resources
+      #
+      # When you build forms to external resources sometimes you need to set an authenticity token or just render a form
+      # without it, for example when you submit data to a payment gateway number and types of fields could be limited.
+      #
+      # To set an authenticity token you need to pass an <tt>:authenticity_token</tt> parameter
+      #
+      #   <%= form_for @invoice, :url => external_url, :authenticity_token => 'external_token' do |f|
+      #     ...
+      #   <% end %>
+      #
+      # If you don't want to an authenticity token field be rendered at all just pass <tt>false</tt>:
+      #
+      #   <%= form_for @invoice, :url => external_url, :authenticity_token => false do |f|
+      #     ...
+      #   <% end %>
+      def form_for(record, options = {}, &proc)
         raise ArgumentError, "Missing block" unless block_given?
 
-        options = args.extract_options!
+        options[:html] ||= {}
 
-        case record_or_name_or_array
+        case record
         when String, Symbol
-          ActiveSupport::Deprecation.warn("Using form_for(:name, @resource) is deprecated. Please use form_for(@resource, :as => :name) instead.", caller) unless args.empty?
-          object_name = record_or_name_or_array
-        when Array
-          object = record_or_name_or_array.last
-          object_name = options[:as] || ActiveModel::Naming.singular(object)
-          apply_form_for_options!(record_or_name_or_array, options)
-          args.unshift object
+          object_name = record
+          object      = nil
         else
-          object = record_or_name_or_array
-          object_name = options[:as] || ActiveModel::Naming.singular(object)
-          apply_form_for_options!([object], options)
-          args.unshift object
+          object      = record.is_a?(Array) ? record.last : record
+          object_name = options[:as] || ActiveModel::Naming.param_key(object)
+          apply_form_for_options!(record, options)
         end
 
-        (options[:html] ||= {})[:remote] = true if options.delete(:remote)
+        options[:html][:remote] = options.delete(:remote)
+        options[:html][:authenticity_token] = options.delete(:authenticity_token)
 
-        output = form_tag(options.delete(:url) || {}, options.delete(:html) || {})
-        output << fields_for(object_name, *(args << options), &proc)
+        builder = options[:parent_builder] = instantiate_builder(object_name, object, options, &proc)
+        fields_for = fields_for(object_name, object, options, &proc)
+        default_options = builder.multipart? ? { :multipart => true } : {}
+        output = form_tag(options.delete(:url) || {}, default_options.merge!(options.delete(:html)))
+        output << fields_for
         output.safe_concat('</form>')
       end
 
@@ -319,21 +364,17 @@ module ActionView
         object = object_or_array.is_a?(Array) ? object_or_array.last : object_or_array
         object = convert_to_model(object)
 
-        html_options =
-          if object.respond_to?(:persisted?) && object.persisted?
-            { :class  => options[:as] ? "#{options[:as]}_edit" : dom_class(object, :edit),
-              :id => options[:as] ? "#{options[:as]}_edit" : dom_id(object, :edit),
-              :method => :put }
-          else
-            { :class  => options[:as] ? "#{options[:as]}_new" : dom_class(object, :new),
-              :id => options[:as] ? "#{options[:as]}_new" : dom_id(object),
-              :method => :post }
-          end
+        as = options[:as]
+        action, method = object.respond_to?(:persisted?) && object.persisted? ? [:edit, :put] : [:new, :post]
+        options[:html].reverse_merge!(
+          :class  => as ? "#{as}_#{action}" : dom_class(object, action),
+          :id     => as ? "#{as}_#{action}" : dom_id(object, action),
+          :method => method
+        )
 
-        options[:html] ||= {}
-        options[:html].reverse_merge!(html_options)
-        options[:url] ||= polymorphic_path(object_or_array)
+        options[:url] ||= polymorphic_path(object_or_array, :format => options.delete(:format))
       end
+      private :apply_form_for_options!
 
       # Creates a scope around a specific model object like form_for, but
       # doesn't create the form tags themselves. This makes fields_for suitable
@@ -348,6 +389,8 @@ module ActionView
       #     <%= fields_for @person.permission do |permission_fields| %>
       #       Admin?  : <%= permission_fields.check_box :admin %>
       #     <% end %>
+      #
+      #     <%= f.submit %>
       #   <% end %>
       #
       # ...or if you have an object that needs to be represented as a different
@@ -409,6 +452,7 @@ module ActionView
       #       Street  : <%= address_fields.text_field :street %>
       #       Zip code: <%= address_fields.text_field :zip_code %>
       #     <% end %>
+      #     ...
       #   <% end %>
       #
       # When address is already an association on a Person you can use
@@ -438,6 +482,7 @@ module ActionView
       #       ...
       #       Delete: <%= address_fields.check_box :_destroy %>
       #     <% end %>
+      #     ...
       #   <% end %>
       #
       # ==== One-to-many
@@ -467,6 +512,7 @@ module ActionView
       #         Name: <%= project_fields.text_field :name %>
       #       <% end %>
       #     <% end %>
+      #     ...
       #   <% end %>
       #
       # It's also possible to specify the instance to be used:
@@ -480,6 +526,7 @@ module ActionView
       #         <% end %>
       #       <% end %>
       #     <% end %>
+      #     ...
       #   <% end %>
       #
       # Or a collection to be used:
@@ -489,6 +536,7 @@ module ActionView
       #     <%= person_form.fields_for :projects, @active_projects do |project_fields| %>
       #       Name: <%= project_fields.text_field :name %>
       #     <% end %>
+      #     ...
       #   <% end %>
       #
       # When projects is already an association on Person you can use
@@ -518,22 +566,13 @@ module ActionView
       #     <%= person_form.fields_for :projects do |project_fields| %>
       #       Delete: <%= project_fields.check_box :_destroy %>
       #     <% end %>
+      #     ...
       #   <% end %>
-      def fields_for(record_or_name_or_array, *args, &block)
-        raise ArgumentError, "Missing block" unless block_given?
-        options = args.extract_options!
-
-        case record_or_name_or_array
-        when String, Symbol
-          object_name = record_or_name_or_array
-          object = args.first
-        else
-          object = record_or_name_or_array
-          object_name = ActiveModel::Naming.singular(object)
-        end
-
-        builder = options[:builder] || ActionView::Base.default_form_builder
-        capture(builder.new(object_name, object, self, options, block), &block)
+      def fields_for(record, record_object = nil, options = {}, &block)
+        builder = instantiate_builder(record, record_object, options, &block)
+        output = capture(builder, &block)
+        output.concat builder.hidden_field(:id) if output && options[:hidden_field_id] && !builder.emitted_hidden_id?
+        output
       end
 
       # Returns a label tag tailored for labelling an input field for a specified attribute (identified by +method+) on an object
@@ -624,19 +663,19 @@ module ActionView
       #
       # ==== Examples
       #   password_field(:login, :pass, :size => 20)
-      #   # => <input type="text" id="login_pass" name="login[pass]" size="20" value="#{@login.pass}" />
+      #   # => <input type="password" id="login_pass" name="login[pass]" size="20" />
       #
-      #   password_field(:account, :secret, :class => "form_input")
-      #   # => <input type="text" id="account_secret" name="account[secret]" value="#{@account.secret}" class="form_input" />
+      #   password_field(:account, :secret, :class => "form_input", :value => @account.secret)
+      #   # => <input type="password" id="account_secret" name="account[secret]" value="#{@account.secret}" class="form_input" />
       #
       #   password_field(:user, :password, :onchange => "if $('user[password]').length > 30 { alert('Your password needs to be shorter!'); }")
-      #   # => <input type="text" id="user_password" name="user[password]" value="#{@user.password}" onchange = "if $('user[password]').length > 30 { alert('Your password needs to be shorter!'); }"/>
+      #   # => <input type="password" id="user_password" name="user[password]" onchange = "if $('user[password]').length > 30 { alert('Your password needs to be shorter!'); }"/>
       #
       #   password_field(:account, :pin, :size => 20, :class => 'form_input')
-      #   # => <input type="text" id="account_pin" name="account[pin]" size="20" value="#{@account.pin}" class="form_input" />
+      #   # => <input type="password" id="account_pin" name="account[pin]" size="20" class="form_input" />
       #
       def password_field(object_name, method, options = {})
-        InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("password", options)
+        InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("password", { :value => nil }.merge!(options))
       end
 
       # Returns a hidden input tag tailored for accessing a specified attribute (identified by +method+) on an object
@@ -657,11 +696,13 @@ module ActionView
         InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("hidden", options)
       end
 
-      # Returns an file upload input tag tailored for accessing a specified attribute (identified by +method+) on an object
+      # Returns a file upload input tag tailored for accessing a specified attribute (identified by +method+) on an object
       # assigned to the template (identified by +object+). Additional options on the input tag can be passed as a
       # hash with +options+. These options will be tagged onto the HTML as an HTML element attribute as in the example
       # shown.
       #
+      # Using this method inside a +form_for+ block will set the enclosing form's encoding to <tt>multipart/form-data</tt>.
+      #
       # ==== Examples
       #   file_field(:user, :avatar)
       #   # => <input type="file" id="user_avatar" name="user[avatar]" />
@@ -803,7 +844,7 @@ module ActionView
           options["incremental"] = true unless options.has_key?("incremental")
         end
 
-        InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("search", options)
+        InstanceTag.new(object_name, method, self, options.delete("object")).to_input_field_tag("search", options)
       end
 
       # Returns a text_field of type "tel".
@@ -837,29 +878,42 @@ module ActionView
       def range_field(object_name, method, options = {})
         InstanceTag.new(object_name, method, self, options.delete(:object)).to_number_field_tag("range", options)
       end
+
+      private
+
+        def instantiate_builder(record, *args, &block)
+          options = args.extract_options!
+          record_object = args.shift
+
+          case record
+          when String, Symbol
+            object = record_object
+            object_name = record
+          else
+            object = record
+            object_name = ActiveModel::Naming.param_key(object)
+          end
+
+          builder = options[:builder] || ActionView::Base.default_form_builder
+          builder.new(object_name, object, self, options, block)
+        end
     end
 
-    module InstanceTagMethods #:nodoc:
-      extend ActiveSupport::Concern
+    class InstanceTag
       include Helpers::CaptureHelper, Context, Helpers::TagHelper, Helpers::FormTagHelper
 
-      attr_reader :method_name, :object_name
+      attr_reader :object, :method_name, :object_name
 
-      DEFAULT_FIELD_OPTIONS     = { "size" => 30 }.freeze
-      DEFAULT_RADIO_OPTIONS     = { }.freeze
-      DEFAULT_TEXT_AREA_OPTIONS = { "cols" => 40, "rows" => 20 }.freeze
+      DEFAULT_FIELD_OPTIONS     = { "size" => 30 }
+      DEFAULT_RADIO_OPTIONS     = { }
+      DEFAULT_TEXT_AREA_OPTIONS = { "cols" => 40, "rows" => 20 }
 
       def initialize(object_name, method_name, template_object, object = nil)
         @object_name, @method_name = object_name.to_s.dup, method_name.to_s.dup
         @template_object = template_object
-        @object = object
-        if @object_name.sub!(/\[\]$/,"") || @object_name.sub!(/\[\]\]$/,"]")
-          if (object ||= @template_object.instance_variable_get("@#{Regexp.last_match.pre_match}")) && object.respond_to?(:to_param)
-            @auto_index = object.to_param
-          else
-            raise ArgumentError, "object[] naming but object param and @object var don't exist or don't respond to to_param: #{object.inspect}"
-          end
-        end
+        @object_name.sub!(/\[\]$/,"") || @object_name.sub!(/\[\]\]$/,"]")
+        @object = retrieve_object(object)
+        @auto_index = retrieve_autoindex(Regexp.last_match.pre_match) if Regexp.last_match
       end
 
       def to_label_tag(text = nil, options = {}, &block)
@@ -905,7 +959,7 @@ module ActionView
         end
         options["type"]  ||= field_type
         options["value"] = options.fetch("value"){ value_before_type_cast(object) } unless field_type == "file"
-        options["value"] &&= html_escape(options["value"])
+        options["value"] &&= ERB::Util.html_escape(options["value"])
         add_default_name_and_id(options)
         tag("input", options)
       end
@@ -941,7 +995,7 @@ module ActionView
           options["cols"], options["rows"] = size.split("x") if size.respond_to?(:split)
         end
 
-        content_tag("textarea", html_escape(options.delete('value') || value_before_type_cast(object)), options)
+        content_tag("textarea", ERB::Util.html_escape(options.delete('value') || value_before_type_cast(object)), options)
       end
 
       def to_check_box_tag(options = {}, checked_value = "1", unchecked_value = "0")
@@ -983,14 +1037,26 @@ module ActionView
         content_tag(tag_name, value(object), options)
       end
 
-      def object
-        @object || @template_object.instance_variable_get("@#{@object_name}")
+      def retrieve_object(object)
+        if object
+          object
+        elsif @template_object.instance_variable_defined?("@#{@object_name}")
+          @template_object.instance_variable_get("@#{@object_name}")
+        end
       rescue NameError
-        # As @object_name may contain the nested syntax (item[subobject]) we
-        # need to fallback to nil.
+        # As @object_name may contain the nested syntax (item[subobject]) we need to fallback to nil.
         nil
       end
 
+      def retrieve_autoindex(pre_match)
+        object = self.object || @template_object.instance_variable_get("@#{pre_match}")
+        if object && object.respond_to?(:to_param)
+          object.to_param
+        else
+          raise ArgumentError, "object[] naming but object param and @object var don't exist or don't respond to to_param: #{object.inspect}"
+        end
+      end
+
       def value(object)
         self.class.value(object, @method_name)
       end
@@ -999,16 +1065,16 @@ module ActionView
         self.class.value_before_type_cast(object, @method_name)
       end
 
-      module ClassMethods
+      class << self
         def value(object, method_name)
-          object.send method_name unless object.nil?
+          object.send method_name if object
         end
 
         def value_before_type_cast(object, method_name)
           unless object.nil?
-            object.respond_to?(method_name) ?
-            object.send(method_name) :
-            object.send(method_name + "_before_type_cast")
+            object.respond_to?(method_name + "_before_type_cast") ?
+            object.send(method_name + "_before_type_cast") :
+            object.send(method_name)
           end
         end
 
@@ -1085,17 +1151,21 @@ module ActionView
         end
     end
 
-    class InstanceTag
-      include InstanceTagMethods
-    end
-
-    class FormBuilder #:nodoc:
+    class FormBuilder
       # The methods which wrap a form helper call.
-      class_inheritable_accessor :field_helpers
+      class_attribute :field_helpers
       self.field_helpers = (FormHelper.instance_method_names - ['form_for'])
 
       attr_accessor :object_name, :object, :options
 
+      attr_reader :multipart, :parent_builder
+      alias :multipart? :multipart
+
+      def multipart=(multipart)
+        @multipart = multipart
+        parent_builder.multipart = multipart if parent_builder
+      end
+
       def self.model_name
         @model_name ||= Struct.new(:partial_path).new(name.demodulize.underscore.sub!(/_builder$/, ''))
       end
@@ -1107,6 +1177,7 @@ module ActionView
       def initialize(object_name, object, template, options, proc)
         @nested_child_index = {}
         @object_name, @object, @template, @options, @proc = object_name, object, template, options, proc
+        @parent_builder = options[:parent_builder]
         @default_options = @options ? @options.slice(:index) : {}
         if @object_name.to_s.match(/\[\]$/)
           if object ||= @template.instance_variable_get("@#{Regexp.last_match.pre_match}") and object.respond_to?(:to_param)
@@ -1115,9 +1186,10 @@ module ActionView
             raise ArgumentError, "object[] naming but object param and @object var don't exist or don't respond to to_param: #{object.inspect}"
           end
         end
+        @multipart = nil
       end
 
-      (field_helpers - %w(label check_box radio_button fields_for hidden_field)).each do |selector|
+      (field_helpers - %w(label check_box radio_button fields_for hidden_field file_field)).each do |selector|
         class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
           def #{selector}(method, options = {})  # def text_field(method, options = {})
             @template.send(                      #   @template.send(
@@ -1139,27 +1211,23 @@ module ActionView
           index = ""
         end
 
-        if options[:builder]
-          args << {} unless args.last.is_a?(Hash)
-          args.last[:builder] ||= options[:builder]
-        end
+        args << {} unless args.last.is_a?(Hash)
+        args.last[:builder] ||= options[:builder]
+        args.last[:parent_builder] = self
 
         case record_or_name_or_array
         when String, Symbol
           if nested_attributes_association?(record_or_name_or_array)
             return fields_for_with_nested_attributes(record_or_name_or_array, args, block)
           else
-            name = "#{object_name}#{index}[#{record_or_name_or_array}]"
+            name = record_or_name_or_array
           end
-        when Array
-          object = record_or_name_or_array.last
-          name = "#{object_name}#{index}[#{ActiveModel::Naming.singular(object)}]"
-          args.unshift(object)
         else
-          object = record_or_name_or_array
-          name = "#{object_name}#{index}[#{ActiveModel::Naming.singular(object)}]"
+          object = record_or_name_or_array.is_a?(Array) ? record_or_name_or_array.last : record_or_name_or_array
+          name   = ActiveModel::Naming.param_key(object)
           args.unshift(object)
         end
+        name = "#{object_name}#{index}[#{name}]"
 
         @template.fields_for(name, *args, &block)
       end
@@ -1181,6 +1249,11 @@ module ActionView
         @template.hidden_field(@object_name, method, objectify_options(options))
       end
 
+      def file_field(method, options = {})
+        self.multipart = true
+        @template.file_field(@object_name, method, objectify_options(options))
+      end
+
       # Add the submit button for the given form. When no value is given, it checks
       # if the object is a new resource or not to create the proper label:
       #
@@ -1211,11 +1284,11 @@ module ActionView
       def submit(value=nil, options={})
         value, options = nil, value if value.is_a?(Hash)
         value ||= submit_default_value
-        @template.submit_tag(value, options.reverse_merge(:id => "#{object_name}_submit"))
+        @template.submit_tag(value, options)
       end
 
       def emitted_hidden_id?
-        @emitted_hidden_id
+        @emitted_hidden_id ||= nil
       end
 
       private
@@ -1224,7 +1297,7 @@ module ActionView
         end
 
         def submit_default_value
-          object = @object.respond_to?(:to_model) ? @object.to_model : @object
+          object = convert_to_model(@object)
           key    = object ? (object.persisted? ? :update : :create) : :submit
 
           model = if object.class.respond_to?(:model_name)
@@ -1249,15 +1322,15 @@ module ActionView
           name = "#{object_name}[#{association_name}_attributes]"
           options = args.extract_options!
           association = args.shift
-          association = association.to_model if association.respond_to?(:to_model)
+          association = convert_to_model(association)
 
           if association.respond_to?(:persisted?)
             association = [association] if @object.send(association_name).is_a?(Array)
-          elsif !association.is_a?(Array)
+          elsif !association.respond_to?(:to_ary)
             association = @object.send(association_name)
           end
 
-          if association.is_a?(Array)
+          if association.respond_to?(:to_ary)
             explicit_child_index = options[:child_index]
             output = ActiveSupport::SafeBuffer.new
             association.each do |child|
@@ -1270,22 +1343,22 @@ module ActionView
         end
 
         def fields_for_nested_model(name, object, options, block)
-          object = object.to_model if object.respond_to?(:to_model)
+          object = convert_to_model(object)
 
-          if object.persisted?
-            @template.fields_for(name, object, options) do |builder|
-              block.call(builder)
-              @template.concat builder.hidden_field(:id) unless builder.emitted_hidden_id?
-            end
-          else
-            @template.fields_for(name, object, options, &block)
-          end
+          parent_include_id = self.options.fetch(:include_id, true)
+          include_id = options.fetch(:include_id, parent_include_id)
+          options[:hidden_field_id] = object.persisted? && include_id
+          @template.fields_for(name, object, options, &block)
         end
 
         def nested_child_index(name)
           @nested_child_index[name] ||= -1
           @nested_child_index[name] += 1
         end
+
+        def convert_to_model(object)
+          object.respond_to?(:to_model) ? object.to_model : object
+        end
     end
   end
 
diff --git a/actionpack/lib/action_view/helpers/form_options_helper.rb b/actionpack/lib/action_view/helpers/form_options_helper.rb
index ee34452769..7698602022 100644
--- a/actionpack/lib/action_view/helpers/form_options_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_options_helper.rb
@@ -2,6 +2,7 @@ require 'cgi'
 require 'erb'
 require 'action_view/helpers/form_helper'
 require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/string/output_safety'
 
 module ActionView
   # = Action View Form Option Helpers
@@ -53,16 +54,16 @@ module ActionView
     #     <option value="2">Sam</option>
     #     <option value="3">Tobias</option>
     #   </select>
-    # 
-    # Like the other form helpers, +select+ can accept an <tt>:index</tt> option to manually set the ID used in the resulting output. Unlike other helpers, +select+ expects this 
+    #
+    # Like the other form helpers, +select+ can accept an <tt>:index</tt> option to manually set the ID used in the resulting output. Unlike other helpers, +select+ expects this
     # option to be in the +html_options+ parameter.
-    # 
-    # Example: 
-    # 
+    #
+    # Example:
+    #
     #   select("album[]", "genre", %w[rap rock country], {}, { :index => nil })
-    # 
+    #
     # becomes:
-    # 
+    #
     #   <select name="album[][genre]" id="album__genre">
     #     <option value="rap">rap</option>
     #     <option value="rock">rock</option>
@@ -100,7 +101,6 @@ module ActionView
     #
     module FormOptionsHelper
       # ERB::Util can mask some helpers like textilize. Make sure to include them.
-      include ERB::Util
       include TextHelper
 
       # Create a select tag and a series of contained option tags for the provided object and method.
@@ -140,7 +140,7 @@ module ActionView
       # The <tt>:value_method</tt> and <tt>:text_method</tt> parameters are methods to be called on each member
       # of +collection+. The return values are used as the +value+ attribute and contents of each
       # <tt><option></tt> tag, respectively.
-      # 
+      #
       # Example object structure for use with this method:
       #   class Post < ActiveRecord::Base
       #     belongs_to :author
@@ -247,7 +247,7 @@ module ActionView
       #
       #   time_zone_select( "user", 'time_zone', /Australia/)
       #
-      #   time_zone_select( "user", "time_zone", ActiveSupport::Timezone.all.sort, :model => ActiveSupport::Timezone)
+      #   time_zone_select( "user", "time_zone", ActiveSupport::TimeZone.all.sort, :model => ActiveSupport::TimeZone)
       def time_zone_select(object, method, priority_zones = nil, options = {}, html_options = {})
         InstanceTag.new(object, method, self,  options.delete(:object)).to_time_zone_select_tag(priority_zones, options, html_options)
       end
@@ -297,18 +297,18 @@ module ActionView
       def options_for_select(container, selected = nil)
         return container if String === container
 
-        container = container.to_a if Hash === container
-        selected, disabled = extract_selected_and_disabled(selected)
+        selected, disabled = extract_selected_and_disabled(selected).map do | r |
+           Array.wrap(r).map(&:to_s)
+        end
 
-        options_for_select = container.inject([]) do |options, element|
+        container.map do |element|
           html_attributes = option_html_attributes(element)
-          text, value = option_text_and_value(element)
+          text, value = option_text_and_value(element).map(&:to_s)
           selected_attribute = ' selected="selected"' if option_value_selected?(value, selected)
           disabled_attribute = ' disabled="disabled"' if disabled && option_value_selected?(value, disabled)
-          options << %(<option value="#{html_escape(value.to_s)}"#{selected_attribute}#{disabled_attribute}#{html_attributes}>#{html_escape(text.to_s)}</option>)
-        end
+          %(<option value="#{ERB::Util.html_escape(value)}"#{selected_attribute}#{disabled_attribute}#{html_attributes}>#{ERB::Util.html_escape(text)}</option>)
+        end.join("\n").html_safe
 
-        options_for_select.join("\n").html_safe
       end
 
       # Returns a string of option tags that have been compiled by iterating over the +collection+ and assigning the
@@ -394,12 +394,12 @@ module ActionView
       # <b>Note:</b> Only the <tt><optgroup></tt> and <tt><option></tt> tags are returned, so you still have to
       # wrap the output in an appropriate <tt><select></tt> tag.
       def option_groups_from_collection_for_select(collection, group_method, group_label_method, option_key_method, option_value_method, selected_key = nil)
-        collection.inject("") do |options_for_select, group|
+        collection.map do |group|
           group_label_string = eval("group.#{group_label_method}")
-          options_for_select += "<optgroup label=\"#{html_escape(group_label_string)}\">"
-          options_for_select += options_from_collection_for_select(eval("group.#{group_method}"), option_key_method, option_value_method, selected_key)
-          options_for_select += '</optgroup>'
-        end.html_safe
+          "<optgroup label=\"#{ERB::Util.html_escape(group_label_string)}\">" +
+            options_from_collection_for_select(eval("group.#{group_method}"), option_key_method, option_value_method, selected_key) +
+            '</optgroup>'
+        end.join.html_safe
       end
 
       # Returns a string of <tt><option></tt> tags, like <tt>options_for_select</tt>, but
@@ -493,7 +493,7 @@ module ActionView
         end
 
         zone_options += options_for_select(convert_zones[zones], selected)
-        zone_options
+        zone_options.html_safe
       end
 
       private
@@ -501,7 +501,7 @@ module ActionView
           return "" unless Array === element
           html_attributes = []
           element.select { |e| Hash === e }.reduce({}, :merge).each do |k, v|
-            html_attributes << " #{k}=\"#{html_escape(v.to_s)}\""
+            html_attributes << " #{k}=\"#{ERB::Util.html_escape(v.to_s)}\""
           end
           html_attributes.join
         end
@@ -528,10 +528,12 @@ module ActionView
         end
 
         def extract_selected_and_disabled(selected)
-          if selected.is_a?(Hash)
-            [selected[:selected], selected[:disabled]]
+          if selected.is_a?(Proc)
+            [ selected, nil ]
           else
-            [selected, nil]
+            selected = Array.wrap(selected)
+            options = selected.extract_options!.symbolize_keys
+            [ options.include?(:selected) ? options[:selected] : selected, options[:disabled] ]
           end
         end
 
@@ -593,11 +595,11 @@ module ActionView
       private
         def add_options(option_tags, options, value = nil)
           if options[:include_blank]
-            option_tags = "<option value=\"\">#{html_escape(options[:include_blank]) if options[:include_blank].kind_of?(String)}</option>\n" + option_tags
+            option_tags = "<option value=\"\">#{ERB::Util.html_escape(options[:include_blank]) if options[:include_blank].kind_of?(String)}</option>\n" + option_tags
           end
           if value.blank? && options[:prompt]
             prompt = options[:prompt].kind_of?(String) ? options[:prompt] : I18n.translate('helpers.select.prompt', :default => 'Please select')
-            option_tags = "<option value=\"\">#{html_escape(prompt)}</option>\n" + option_tags
+            option_tags = "<option value=\"\">#{ERB::Util.html_escape(prompt)}</option>\n" + option_tags
           end
           option_tags.html_safe
         end
diff --git a/actionpack/lib/action_view/helpers/form_tag_helper.rb b/actionpack/lib/action_view/helpers/form_tag_helper.rb
index 1ea870426a..49aa434020 100644
--- a/actionpack/lib/action_view/helpers/form_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_tag_helper.rb
@@ -1,6 +1,7 @@
 require 'cgi'
 require 'action_view/helpers/tag_helper'
 require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/string/output_safety'
 
 module ActionView
   # = Action View Form Tag Helpers
@@ -24,8 +25,11 @@ module ActionView
       # * <tt>:method</tt> - The method to use when submitting the form, usually either "get" or "post".
       #   If "put", "delete", or another verb is used, a hidden input with name <tt>_method</tt>
       #   is added to simulate the verb over post.
+      # * <tt>:authenticity_token</tt> - Authenticity token to use in the form. Use only if you need to
+      #   pass custom authenticity token string, or to not add authenticity_token field at all
+      #   (by passing <tt>false</tt>).
       # * A list of parameters to feed to the URL the form will be posted to.
-      # * <tt>:remote</tt> - If set to true, will allow the Unobtrusive JavaScript drivers to control the 
+      # * <tt>:remote</tt> - If set to true, will allow the Unobtrusive JavaScript drivers to control the
       #   submit behaviour. By default this behaviour is an ajax submit.
       #
       # ==== Examples
@@ -38,14 +42,20 @@ module ActionView
       #   form_tag('/upload', :multipart => true)
       #   # => <form action="/upload" method="post" enctype="multipart/form-data">
       #
-      #   <%= form_tag('/posts')do -%>
+      #   <%= form_tag('/posts') do -%>
       #     <div><%= submit_tag 'Save' %></div>
       #   <% end -%>
       #   # => <form action="/posts" method="post"><div><input type="submit" name="submit" value="Save" /></div></form>
-      # 
+      #
       #  <%= form_tag('/posts', :remote => true) %>
       #   # => <form action="/posts" method="post" data-remote="true">
-      #   
+      #
+      #   form_tag('http://far.away.com/form', :authenticity_token => false)
+      #   # form without authenticity token
+      #
+      #   form_tag('http://far.away.com/form', :authenticity_token => "cf50faa3fe97702ca1ae")
+      #   # form with custom authenticity token
+      #
       def form_tag(url_for_options = {}, options = {}, *parameters_for_url, &block)
         html_options = html_options_for_form(url_for_options, options, *parameters_for_url)
         if block_given?
@@ -67,7 +77,7 @@ module ActionView
       # * Any other key creates standard HTML attributes for the tag.
       #
       # ==== Examples
-      #   select_tag "people", options_from_collection_for_select(@people, "name", "id")
+      #   select_tag "people", options_from_collection_for_select(@people, "id", "name")
       #   # <select id="people" name="people"><option value="1">David</option></select>
       #
       #   select_tag "people", "<option>David</option>"
@@ -93,10 +103,6 @@ module ActionView
       #   # => <select disabled="disabled" id="destination" name="destination"><option>NYC</option>
       #   #    <option>Paris</option><option>Rome</option></select>
       def select_tag(name, option_tags = nil, options = {})
-        if Array === option_tags
-          ActiveSupport::Deprecation.warn 'Passing an array of option_tags to select_tag implicitly joins them without marking them as HTML-safe. Pass option_tags.join.html_safe instead.', caller
-        end
-
         html_name = (options[:multiple] == true && !name.to_s.ends_with?("[]")) ? "#{name}[]" : name
         if blank = options.delete(:include_blank)
           if blank.kind_of?(String)
@@ -115,6 +121,7 @@ module ActionView
       # * <tt>:disabled</tt> - If set to true, the user will not be able to use this input.
       # * <tt>:size</tt> - The number of visible characters that will fit in the input.
       # * <tt>:maxlength</tt> - The maximum number of characters that the browser will allow the user to enter.
+      # * <tt>:placeholder</tt> - The text contained in the field by default which is removed when the field receives focus.
       # * Any other key creates standard HTML attributes for the tag.
       #
       # ==== Examples
@@ -124,6 +131,9 @@ module ActionView
       #   text_field_tag 'query', 'Enter your search query here'
       #   # => <input id="query" name="query" type="text" value="Enter your search query here" />
       #
+      #   text_field_tag 'search', nil, :placeholder => 'Enter search term...'
+      #   # => <input id="search" name="search" placeholder="Enter search term..." type="text" />
+      #
       #   text_field_tag 'request', nil, :class => 'special_input'
       #   # => <input class="special_input" id="request" name="request" type="text" />
       #
@@ -291,7 +301,7 @@ module ActionView
         end
 
         escape = options.key?("escape") ? options.delete("escape") : true
-        content = html_escape(content) if escape
+        content = ERB::Util.html_escape(content) if escape
 
         content_tag :textarea, content.to_s.html_safe, { "name" => name, "id" => sanitize_to_id(name) }.update(options)
       end
@@ -351,12 +361,12 @@ module ActionView
       # Creates a submit button with the text <tt>value</tt> as the caption.
       #
       # ==== Options
-      # * <tt>:confirm => 'question?'</tt> - If present the unobtrusive JavaScript 
-      #   drivers will provide a prompt with the question specified. If the user accepts, 
+      # * <tt>:confirm => 'question?'</tt> - If present the unobtrusive JavaScript
+      #   drivers will provide a prompt with the question specified. If the user accepts,
       #   the form is processed normally, otherwise no action is taken.
       # * <tt>:disabled</tt> - If true, the user will not be able to use this input.
-      # * <tt>:disable_with</tt> - Value of this parameter will be used as the value for a 
-      #   disabled version of the submit button when the form is submitted. This feature is 
+      # * <tt>:disable_with</tt> - Value of this parameter will be used as the value for a
+      #   disabled version of the submit button when the form is submitted. This feature is
       #   provided by the unobtrusive JavaScript driver.
       # * Any other key creates standard HTML options for the tag.
       #
@@ -383,7 +393,7 @@ module ActionView
       #   #    name="commit" type="submit" value="Edit" />
       #
       #   submit_tag "Save", :confirm => "Are you sure?"
-      #   # => <input name='commit' type='submit' value='Save' 
+      #   # => <input name='commit' type='submit' value='Save'
       #         data-confirm="Are you sure?" />
       #
       def submit_tag(value = "Save changes", options = {})
@@ -394,12 +404,65 @@ module ActionView
         end
 
         if confirm = options.delete("confirm")
-          add_confirm_to_attributes!(options, confirm)
+          options["data-confirm"] = confirm
         end
 
         tag :input, { "type" => "submit", "name" => "commit", "value" => value }.update(options.stringify_keys)
       end
 
+      # Creates a button element that defines a <tt>submit</tt> button,
+      # <tt>reset</tt>button or a generic button which can be used in
+      # JavaScript, for example. You can use the button tag as a regular
+      # submit tag but it isn't supported in legacy browsers. However,
+      # the button tag allows richer labels such as images and emphasis,
+      # so this helper will also accept a block.
+      #
+      # ==== Options
+      # * <tt>:confirm => 'question?'</tt> - If present, the
+      #   unobtrusive JavaScript drivers will provide a prompt with
+      #   the question specified. If the user accepts, the form is
+      #   processed normally, otherwise no action is taken.
+      # * <tt>:disabled</tt> - If true, the user will not be able to
+      #   use this input.
+      # * <tt>:disable_with</tt> - Value of this parameter will be
+      #   used as the value for a disabled version of the submit
+      #   button when the form is submitted. This feature is provided
+      #   by the unobtrusive JavaScript driver.
+      # * Any other key creates standard HTML options for the tag.
+      #
+      # ==== Examples
+      #   button_tag
+      #   # => <button name="button" type="submit">Button</button>
+      #
+      #   button_tag(:type => 'button') do
+      #     content_tag(:strong, 'Ask me!')
+      #   end
+      #   # => <button name="button" type="button">
+      #          <strong>Ask me!</strong>
+      #        </button>
+      #
+      #   button_tag "Checkout", :disable_with => "Please wait..."
+      #   # => <button data-disable-with="Please wait..." name="button"
+      #                type="submit">Checkout</button>
+      #
+      def button_tag(content_or_options = nil, options = nil, &block)
+        options = content_or_options if block_given? && content_or_options.is_a?(Hash)
+        options ||= {}
+        options.stringify_keys!
+
+        if disable_with = options.delete("disable_with")
+          options["data-disable-with"] = disable_with
+        end
+
+        if confirm = options.delete("confirm")
+          options["data-confirm"] = confirm
+        end
+
+        options.reverse_merge! 'name' => 'button', 'type' => 'submit'
+
+        content_tag :button, content_or_options || 'Button', options, &block
+      end
+
       # Displays an image which when clicked will submit the form.
       #
       # <tt>source</tt> is passed to AssetTagHelper#path_to_image
@@ -427,7 +490,7 @@ module ActionView
         options.stringify_keys!
 
         if confirm = options.delete("confirm")
-          add_confirm_to_attributes!(options, confirm)
+          options["data-confirm"] = confirm
         end
 
         tag :input, { "type" => "image", "src" => path_to_image(source) }.update(options.stringify_keys)
@@ -529,17 +592,19 @@ module ActionView
           options.stringify_keys.tap do |html_options|
             html_options["enctype"] = "multipart/form-data" if html_options.delete("multipart")
             # The following URL is unescaped, this is just a hash of options, and it is the
-            # responsability of the caller to escape all the values.
+            # responsibility of the caller to escape all the values.
             html_options["action"]  = url_for(url_for_options, *parameters_for_url)
             html_options["accept-charset"] = "UTF-8"
             html_options["data-remote"] = true if html_options.delete("remote")
+            html_options["authenticity_token"] = html_options.delete("authenticity_token") if html_options.has_key?("authenticity_token")
           end
         end
 
         def extra_tags_for_form(html_options)
           snowman_tag = tag(:input, :type => "hidden",
-                            :name => "_e", :value => "&#9731;".html_safe)
+                            :name => "utf8", :value => "&#x2713;".html_safe)
 
+          authenticity_token = html_options.delete("authenticity_token")
           method = html_options.delete("method").to_s
 
           method_tag = case method
@@ -548,10 +613,10 @@ module ActionView
               ''
             when /^post$/i, "", nil
               html_options["method"] = "post"
-              token_tag
+              token_tag(authenticity_token)
             else
               html_options["method"] = "post"
-              tag(:input, :type => "hidden", :name => "_method", :value => method) + token_tag
+              tag(:input, :type => "hidden", :name => "_method", :value => method) + token_tag(authenticity_token)
           end
 
           tags = snowman_tag << method_tag
@@ -571,11 +636,12 @@ module ActionView
           output.safe_concat("</form>")
         end
 
-        def token_tag
-          unless protect_against_forgery?
+        def token_tag(token)
+          if token == false || !protect_against_forgery?
             ''
           else
-            tag(:input, :type => "hidden", :name => request_forgery_protection_token.to_s, :value => form_authenticity_token)
+            token = form_authenticity_token if token.nil?
+            tag(:input, :type => "hidden", :name => request_forgery_protection_token.to_s, :value => token)
           end
         end
 
diff --git a/actionpack/lib/action_view/helpers/javascript_helper.rb b/actionpack/lib/action_view/helpers/javascript_helper.rb
index 84f53b842c..cd3a3eac80 100644
--- a/actionpack/lib/action_view/helpers/javascript_helper.rb
+++ b/actionpack/lib/action_view/helpers/javascript_helper.rb
@@ -65,7 +65,8 @@ module ActionView
       #   //]]>
       #   </script>
       #
-      # +html_options+ may be a hash of attributes for the <script> tag. Example:
+      # +html_options+ may be a hash of attributes for the <tt>\<script></tt>
+      # tag. Example:
       #   javascript_tag "alert('All is good')", :defer => 'defer'
       #   # => <script defer="defer" type="text/javascript">alert('All is good')</script>
       #
diff --git a/actionpack/lib/action_view/helpers/number_helper.rb b/actionpack/lib/action_view/helpers/number_helper.rb
index f11027bc93..05a9c5b4f1 100644
--- a/actionpack/lib/action_view/helpers/number_helper.rb
+++ b/actionpack/lib/action_view/helpers/number_helper.rb
@@ -1,6 +1,7 @@
 require 'active_support/core_ext/big_decimal/conversions'
 require 'active_support/core_ext/float/rounding'
 require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/string/output_safety'
 
 module ActionView
   # = Action View Number Helpers
@@ -14,7 +15,7 @@ module ActionView
     # unchanged if can't be converted into a valid number.
     module NumberHelper
 
-      DEFAULT_CURRENCY_VALUES = { :format => "%u%n", :unit => "$", :separator => ".", :delimiter => ",",
+      DEFAULT_CURRENCY_VALUES = { :format => "%u%n", :negative_format => "-%u%n", :unit => "$", :separator => ".", :delimiter => ",",
                                   :precision => 2, :significant => false, :strip_insignificant_zeros => false }
 
       # Raised when argument +number+ param given to the helpers is invalid and
@@ -47,51 +48,51 @@ module ActionView
       #  number_to_phone(1235551234, :country_code => 1, :extension => 1343, :delimiter => ".")
       #  => +1.123.555.1234 x 1343
       def number_to_phone(number, options = {})
-        return nil if number.nil?
+        return unless number
 
         begin
           Float(number)
-          is_number_html_safe = true
         rescue ArgumentError, TypeError
-          if options[:raise]
-            raise InvalidNumberError, number
-          else
-            is_number_html_safe = number.to_s.html_safe?
-          end
-        end
+          raise InvalidNumberError, number
+        end if options[:raise]
 
         number       = number.to_s.strip
         options      = options.symbolize_keys
-        area_code    = options[:area_code] || nil
+        area_code    = options[:area_code]
         delimiter    = options[:delimiter] || "-"
-        extension    = options[:extension].to_s.strip || nil
-        country_code = options[:country_code] || nil
+        extension    = options[:extension]
+        country_code = options[:country_code]
 
-        str = ""
-        str << "+#{country_code}#{delimiter}" unless country_code.blank?
-        str << if area_code
-          number.gsub!(/([0-9]{1,3})([0-9]{3})([0-9]{4}$)/,"(\\1) \\2#{delimiter}\\3")
+        if area_code
+          number.gsub!(/(\d{1,3})(\d{3})(\d{4}$)/,"(\\1) \\2#{delimiter}\\3")
         else
-          number.gsub!(/([0-9]{0,3})([0-9]{3})([0-9]{4})$/,"\\1#{delimiter}\\2#{delimiter}\\3")
-          number.starts_with?('-') ? number.slice!(1..-1) : number
+          number.gsub!(/(\d{0,3})(\d{3})(\d{4})$/,"\\1#{delimiter}\\2#{delimiter}\\3")
+          number.slice!(0, 1) if number.starts_with?('-')
         end
+
+        str = []
+        str << "+#{country_code}#{delimiter}" unless country_code.blank?
+        str << number
         str << " x #{extension}" unless extension.blank?
-        is_number_html_safe ? str.html_safe : str
+        ERB::Util.html_escape(str.join)
       end
 
       # Formats a +number+ into a currency string (e.g., $13.65). You can customize the format
       # in the +options+ hash.
       #
       # ==== Options
-      # * <tt>:locale</tt>     -  Sets the locale to be used for formatting (defaults to current locale).
-      # * <tt>:precision</tt>  -  Sets the level of precision (defaults to 2).
-      # * <tt>:unit</tt>       - Sets the denomination of the currency (defaults to "$").
-      # * <tt>:separator</tt>  - Sets the separator between the units (defaults to ".").
-      # * <tt>:delimiter</tt>  - Sets the thousands delimiter (defaults to ",").
-      # * <tt>:format</tt>     - Sets the format of the output string (defaults to "%u%n"). The field types are:
-      #
-      #     %u  The currency unit
-      #     %n  The number
+      # * <tt>:locale</tt>           - Sets the locale to be used for formatting (defaults to current locale).
+      # * <tt>:precision</tt>        - Sets the level of precision (defaults to 2).
+      # * <tt>:unit</tt>             - Sets the denomination of the currency (defaults to "$").
+      # * <tt>:separator</tt>        - Sets the separator between the units (defaults to ".").
+      # * <tt>:delimiter</tt>        - Sets the thousands delimiter (defaults to ",").
+      # * <tt>:format</tt>           - Sets the format for non-negative numbers (defaults to "%u%n").
+      #                                Fields are <tt>%u</tt> for the currency, and <tt>%n</tt>
+      #                                for the number.
+      # * <tt>:negative_format</tt>  - Sets the format for negative numbers (defaults to prepending
+      #                                an hyphen to the formatted number given by <tt>:format</tt>).
+      #                                Accepts the same fields than <tt>:format</tt>, except
+      #                                <tt>%n</tt> is here the absolute value of the number.
       #
       # ==== Examples
       #  number_to_currency(1234567890.50)                    # => $1,234,567,890.50
@@ -99,12 +100,14 @@ module ActionView
       #  number_to_currency(1234567890.506, :precision => 3)  # => $1,234,567,890.506
       #  number_to_currency(1234567890.506, :locale => :fr)   # => 1 234 567 890,506 €
       #
+      #  number_to_currency(1234567890.50, :negative_format => "(%u%n)")
+      #  # => ($1,234,567,890.51)
       #  number_to_currency(1234567890.50, :unit => "&pound;", :separator => ",", :delimiter => "")
       #  # => &pound;1234567890,50
       #  number_to_currency(1234567890.50, :unit => "&pound;", :separator => ",", :delimiter => "", :format => "%n %u")
       #  # => 1234567890,50 &pound;
       def number_to_currency(number, options = {})
-        return nil if number.nil?
+        return unless number
 
         options.symbolize_keys!
 
@@ -112,11 +115,17 @@ module ActionView
         currency  = I18n.translate(:'number.currency.format', :locale => options[:locale], :default => {})
 
         defaults  = DEFAULT_CURRENCY_VALUES.merge(defaults).merge!(currency)
+        defaults[:negative_format] = "-" + options[:format] if options[:format]
         options   = defaults.merge!(options)
 
         unit      = options.delete(:unit)
         format    = options.delete(:format)
 
+        if number.to_f < 0
+          format = options.delete(:negative_format)
+          number = number.respond_to?("abs") ? number.abs : number.sub(/^-/, '')
+        end
+
         begin
           value = number_with_precision(number, options.merge(:raise => true))
           format.gsub(/%n/, value).gsub(/%u/, unit).html_safe
@@ -149,7 +158,7 @@ module ActionView
       #  number_to_percentage(302.24398923423, :precision => 5)           # => 302.24399%
       #  number_to_percentage(1000, :locale => :fr)                       # => 1 000,000%
       def number_to_percentage(number, options = {})
-        return nil if number.nil?
+        return unless number
 
         options.symbolize_keys!
 
@@ -260,13 +269,14 @@ module ActionView
           if number == 0
             digits, rounded_number = 1, 0
           else
-            digits = (Math.log10(number) + 1).floor
-            rounded_number = BigDecimal.new((number / 10 ** (digits - precision)).to_s).round.to_f * 10 ** (digits - precision)
+            digits = (Math.log10(number.abs) + 1).floor
+            rounded_number = (BigDecimal.new(number.to_s) / BigDecimal.new((10 ** (digits - precision)).to_f.to_s)).round.to_f * 10 ** (digits - precision)
+            digits = (Math.log10(rounded_number.abs) + 1).floor # After rounding, the number of digits may have changed
           end
-          precision = precision - digits
+          precision -= digits
           precision = precision > 0 ? precision : 0  #don't let it be negative
         else
-          rounded_number = BigDecimal.new((number * (10 ** precision)).to_s).round.to_f / 10 ** precision
+          rounded_number = BigDecimal.new(number.to_s).round(precision).to_f
         end
         formatted_number = number_with_delimiter("%01.#{precision}f" % rounded_number, options)
         if strip_insignificant_zeros
@@ -325,7 +335,7 @@ module ActionView
         defaults = I18n.translate(:'number.format', :locale => options[:locale], :default => {})
         human    = I18n.translate(:'number.human.format', :locale => options[:locale], :default => {})
         defaults = defaults.merge(human)
-        
+
         options = options.reverse_merge(defaults)
         #for backwards compatibility with those that didn't add strip_insignificant_zeros to their locale files
         options[:strip_insignificant_zeros] = true if not options.key?(:strip_insignificant_zeros)
@@ -359,7 +369,7 @@ module ActionView
       # See <tt>number_to_human_size</tt> if you want to print a file size.
       #
       # You can also define you own unit-quantifier names if you want to use other decimal units
-      # (eg.: 1500 becomes "1.5 kilometers", 0.150 becomes "150 mililiters", etc). You may define
+      # (eg.: 1500 becomes "1.5 kilometers", 0.150 becomes "150 milliliters", etc). You may define
       # a wide range of unit quantifiers, even fractional ones (centi, deci, mili, etc).
       #
       # ==== Options
@@ -415,13 +425,13 @@ module ActionView
       #     thousand:
       #       one: "kilometer"
       #       other: "kilometers"
-      #     billion: "gazilion-distance"
+      #     billion: "gazillion-distance"
       #
       # Then you could do:
       #
       #  number_to_human(543934, :units => :distance)                              # => "544 kilometers"
       #  number_to_human(54393498, :units => :distance)                            # => "54400 kilometers"
-      #  number_to_human(54393498000, :units => :distance)                         # => "54.4 gazilion-distance"
+      #  number_to_human(54393498000, :units => :distance)                         # => "54.4 gazillion-distance"
       #  number_to_human(343, :units => :distance, :precision => 1)                # => "300 meters"
       #  number_to_human(1, :units => :distance)                                   # => "1 meter"
       #  number_to_human(0.34, :units => :distance)                                # => "34 centimeters"
@@ -447,6 +457,8 @@ module ActionView
         #for backwards compatibility with those that didn't add strip_insignificant_zeros to their locale files
         options[:strip_insignificant_zeros] = true if not options.key?(:strip_insignificant_zeros)
 
+        inverted_du = DECIMAL_UNITS.invert
+
         units = options.delete :units
         unit_exponents = case units
         when Hash
@@ -457,10 +469,10 @@ module ActionView
           I18n.translate(:"number.human.decimal_units.units", :locale => options[:locale], :raise => true)
         else
           raise ArgumentError, ":units must be a Hash or String translation scope."
-        end.keys.map{|e_name| DECIMAL_UNITS.invert[e_name] }.sort_by{|e| -e}
+        end.keys.map{|e_name| inverted_du[e_name] }.sort_by{|e| -e}
 
-        number_exponent = Math.log10(number).floor
-        display_exponent = unit_exponents.find{|e| number_exponent >= e }
+        number_exponent = number != 0 ? Math.log10(number.abs).floor : 0
+        display_exponent = unit_exponents.find{ |e| number_exponent >= e } || 0
         number  /= 10 ** display_exponent
 
         unit = case units
diff --git a/actionpack/lib/action_view/helpers/output_safety_helper.rb b/actionpack/lib/action_view/helpers/output_safety_helper.rb
new file mode 100644
index 0000000000..a035dd70ad
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/output_safety_helper.rb
@@ -0,0 +1,38 @@
+require 'active_support/core_ext/string/output_safety'
+
+module ActionView #:nodoc:
+  # = Action View Raw Output Helper
+  module Helpers #:nodoc:
+    module OutputSafetyHelper
+      # This method outputs without escaping a string. Since escaping tags is
+      # now default, this can be used when you don't want Rails to automatically
+      # escape tags. This is not recommended if the data is coming from the user's
+      # input.
+      #
+      # For example:
+      #
+      # <%=raw @user.name %>
+      def raw(stringish)
+        stringish.to_s.html_safe
+      end
+
+      # This method returns a html safe string similar to what <tt>Array#join</tt>
+      # would return. All items in the array, including the supplied separator, are
+      # html escaped unless they are html safe, and the returned string is marked
+      # as html safe.
+      #
+      #   safe_join(["<p>foo</p>".html_safe, "<p>bar</p>"], "<br />")
+      #   # => "<p>foo</p>&lt;br /&gt;&lt;p&gt;bar&lt;/p&gt;"
+      #
+      #   safe_join(["<p>foo</p>".html_safe, "<p>bar</p>".html_safe], "<br />".html_safe)
+      #   # => "<p>foo</p><br /><p>bar</p>"
+      #
+      def safe_join(array, sep=$,)
+        sep ||= "".html_safe
+        sep = ERB::Util.html_escape(sep)
+
+        array.map { |i| ERB::Util.html_escape(i) }.join(sep).html_safe
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/actionpack/lib/action_view/helpers/prototype_helper.rb b/actionpack/lib/action_view/helpers/prototype_helper.rb
index 99f9363a9a..18e303778c 100644
--- a/actionpack/lib/action_view/helpers/prototype_helper.rb
+++ b/actionpack/lib/action_view/helpers/prototype_helper.rb
@@ -1,6 +1,7 @@
 require 'set'
 require 'active_support/json'
 require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/string/output_safety'
 
 module ActionView
   # = Action View Prototype Helpers
@@ -102,7 +103,7 @@ module ActionView
                        :form, :with, :update, :script, :type ]).merge(CALLBACKS)
 
       # Returns the JavaScript needed for a remote function.
-      # See the link_to_remote documentation at http://github.com/rails/prototype_legacy_helper as it takes the same arguments.
+      # See the link_to_remote documentation at https://github.com/rails/prototype_legacy_helper as it takes the same arguments.
       #
       # Example:
       #   # Generates: <select id="options" onchange="new Ajax.Updater('options',
@@ -130,8 +131,7 @@ module ActionView
           "new Ajax.Updater(#{update}, "
 
         url_options = options[:url]
-        url_options = url_options.merge(:escape => false) if url_options.is_a?(Hash)
-        function << "'#{html_escape(escape_javascript(url_for(url_options)))}'"
+        function << "'#{ERB::Util.html_escape(escape_javascript(url_for(url_options)))}'"
         function << ", #{javascript_options})"
 
         function = "#{options[:before]}; #{function}" if options[:before]
@@ -161,8 +161,8 @@ module ActionView
 
         # JavaScriptGenerator generates blocks of JavaScript code that allow you
         # to change the content and presentation of multiple DOM elements.  Use
-        # this in your Ajax response bodies, either in a <script> tag or as plain
-        # JavaScript sent with a Content-type of "text/javascript".
+        # this in your Ajax response bodies, either in a <tt>\<script></tt> tag
+        # or as plain JavaScript sent with a Content-type of "text/javascript".
         #
         # Create new instances with PrototypeHelper#update_page or with
         # ActionController::Base#render, then call +insert_html+, +replace_html+,
@@ -224,7 +224,7 @@ module ActionView
         #
         # You can also use PrototypeHelper#update_page_tag instead of
         # PrototypeHelper#update_page to wrap the generated JavaScript in a
-        # <script> tag.
+        # <tt>\<script></tt> tag.
         module GeneratorMethods
           def to_s #:nodoc:
             (@lines * $/).tap do |javascript|
@@ -546,7 +546,7 @@ module ActionView
             end
 
             def with_formats(*args)
-              @context ? @context.update_details(:formats => args) { yield } : yield
+              @context ? @context.lookup_context.update_details(:formats => args) { yield } : yield
             end
 
             def javascript_object_for(object)
@@ -579,15 +579,15 @@ module ActionView
       #     page.hide 'spinner'
       #   end
       def update_page(&block)
-        JavaScriptGenerator.new(view_context, &block).to_s.html_safe
+        JavaScriptGenerator.new(self, &block).to_s.html_safe
       end
 
-      # Works like update_page but wraps the generated JavaScript in a <script>
-      # tag. Use this to include generated JavaScript in an ERb template.
-      # See JavaScriptGenerator for more information.
+      # Works like update_page but wraps the generated JavaScript in a
+      # <tt>\<script></tt> tag. Use this to include generated JavaScript in an
+      # ERb template. See JavaScriptGenerator for more information.
       #
-      # +html_options+ may be a hash of <script> attributes to be passed
-      # to ActionView::Helpers::JavaScriptHelper#javascript_tag.
+      # +html_options+ may be a hash of <tt>\<script></tt> attributes to be
+      # passed to ActionView::Helpers::JavaScriptHelper#javascript_tag.
       def update_page_tag(html_options = {}, &block)
         javascript_tag update_page(&block), html_options
       end
diff --git a/actionpack/lib/action_view/helpers/raw_output_helper.rb b/actionpack/lib/action_view/helpers/raw_output_helper.rb
deleted file mode 100644
index da7599fa8f..0000000000
--- a/actionpack/lib/action_view/helpers/raw_output_helper.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-module ActionView #:nodoc:
-  # = Action View Raw Output Helper
-  module Helpers #:nodoc:
-    module RawOutputHelper
-      # This method outputs without escaping a string. Since escaping tags is 
-      # now default, this can be used when you don't want Rails to automatically
-      # escape tags. This is not recommended if the data is coming from the user's
-      # input.
-      #
-      # For example:
-      #
-      # <%=raw @user.name %>
-      def raw(stringish)
-        stringish.to_s.html_safe
-      end
-    end
-  end
-end
\ No newline at end of file
diff --git a/actionpack/lib/action_view/helpers/record_tag_helper.rb b/actionpack/lib/action_view/helpers/record_tag_helper.rb
index e4a9210cde..4d300a1469 100644
--- a/actionpack/lib/action_view/helpers/record_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/record_tag_helper.rb
@@ -52,9 +52,9 @@ module ActionView
       #
       #    <li id="person_123" class="person bar">...
       #
-      def content_tag_for(tag_name, record, *args, &block)
-        prefix  = args.first.is_a?(Hash) ? nil : args.shift
-        options = args.extract_options!
+      def content_tag_for(tag_name, record, prefix = nil, options = nil, &block)
+        options, prefix = prefix, nil if prefix.is_a?(Hash)
+        options ||= {}
         options.merge!({ :class => "#{dom_class(record, prefix)} #{options[:class]}".strip, :id => dom_id(record, prefix) })
         content_tag(tag_name, options, &block)
       end
diff --git a/actionpack/lib/action_view/helpers/sanitize_helper.rb b/actionpack/lib/action_view/helpers/sanitize_helper.rb
index d82005fa24..0fee34f8a4 100644
--- a/actionpack/lib/action_view/helpers/sanitize_helper.rb
+++ b/actionpack/lib/action_view/helpers/sanitize_helper.rb
@@ -9,7 +9,7 @@ module ActionView
     # These helper methods extend Action View making them callable within your template files.
     module SanitizeHelper
       extend ActiveSupport::Concern
-      # This +sanitize+ helper will html encode all tags and strip all attributes that 
+      # This +sanitize+ helper will html encode all tags and strip all attributes that
       # aren't specifically allowed.
       #
       # It also strips href/src tags with invalid protocols, like javascript: especially.
@@ -21,7 +21,7 @@ module ActionView
       #
       # You can add or remove tags/attributes if you want to customize it a bit.
       # See ActionView::Base for full docs on the available options.  You can add
-      # tags/attributes for single uses of +sanitize+ by passing either the 
+      # tags/attributes for single uses of +sanitize+ by passing either the
       # <tt>:attributes</tt> or <tt>:tags</tt> options:
       #
       # Normal Use
diff --git a/actionpack/lib/action_view/helpers/tag_helper.rb b/actionpack/lib/action_view/helpers/tag_helper.rb
index 5d032b32a7..786af5ca58 100644
--- a/actionpack/lib/action_view/helpers/tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/tag_helper.rb
@@ -1,4 +1,5 @@
 require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/string/output_safety'
 require 'set'
 
 module ActionView
@@ -7,16 +8,14 @@ module ActionView
     # Provides methods to generate HTML tags programmatically when you can't use
     # a Builder. By default, they output XHTML compliant tags.
     module TagHelper
-      include ERB::Util
-
       extend ActiveSupport::Concern
       include CaptureHelper
 
       BOOLEAN_ATTRIBUTES = %w(disabled readonly multiple checked autobuffer
                            autoplay controls loop selected hidden scoped async
                            defer reversed ismap seemless muted required
-                           autofocus novalidate formnovalidate open).to_set
-      BOOLEAN_ATTRIBUTES.merge(BOOLEAN_ATTRIBUTES.map {|attr| attr.to_sym })
+                           autofocus novalidate formnovalidate open pubdate).to_set
+      BOOLEAN_ATTRIBUTES.merge(BOOLEAN_ATTRIBUTES.map {|attribute| attribute.to_sym })
 
       # Returns an empty HTML tag of type +name+ which by default is XHTML
       # compliant. Set +open+ to true to create an open tag compatible
@@ -25,9 +24,21 @@ module ActionView
       # escaping.
       #
       # ==== Options
-      # The +options+ hash is used with attributes with no value like (<tt>disabled</tt> and
-      # <tt>readonly</tt>), which you can give a value of true in the +options+ hash. You can use
-      # symbols or strings for the attribute names.
+      # You can use symbols or strings for the attribute names.
+      #
+      # Use +true+ with boolean attributes that can render with no value, like
+      # +disabled+ and +readonly+.
+      #
+      # HTML5 <tt>data-*</tt> attributes can be set with a single +data+ key
+      # pointing to a hash of sub-attributes.
+      #
+      # To play nicely with JavaScript conventions sub-attributes are dasherized.
+      # For example, a key +user_id+ would render as <tt>data-user-id</tt> and
+      # thus accessed as <tt>dataset.userId</tt>.
+      #
+      # Values are encoded to JSON, with the exception of strings and symbols.
+      # This may come in handy when using jQuery's HTML5-aware <tt>.data()<tt>
+      # from 1.4.3.
       #
       # ==== Examples
       #   tag("br")
@@ -36,14 +47,17 @@ module ActionView
       #   tag("br", nil, true)
       #   # => <br>
       #
-      #   tag("input", { :type => 'text', :disabled => true })
+      #   tag("input", :type => 'text', :disabled => true)
       #   # => <input type="text" disabled="disabled" />
       #
-      #   tag("img", { :src => "open & shut.png" })
+      #   tag("img", :src => "open & shut.png")
       #   # => <img src="open &amp; shut.png" />
       #
-      #   tag("img", { :src => "open &amp; shut.png" }, false, false)
+      #   tag("img", {:src => "open &amp; shut.png"}, false, false)
       #   # => <img src="open &amp; shut.png" />
+      #
+      #   tag("div", :data => {:name => 'Stephen', :city_state => %w(Chicago IL)})
+      #   # => <div data-name="Stephen" data-city-state="[&quot;Chicago&quot;,&quot;IL&quot;]" />
       def tag(name, options = nil, open = false, escape = true)
         "<#{name}#{tag_options(options, escape) if options}#{open ? ">" : " />"}".html_safe
       end
@@ -118,11 +132,19 @@ module ActionView
           unless options.blank?
             attrs = []
             options.each_pair do |key, value|
-              if BOOLEAN_ATTRIBUTES.include?(key)
+              if key.to_s == 'data' && value.is_a?(Hash)
+                value.each do |k, v|
+                  if !v.is_a?(String) && !v.is_a?(Symbol)
+                    v = v.to_json
+                  end
+                  v = ERB::Util.html_escape(v) if escape
+                  attrs << %(data-#{k.to_s.dasherize}="#{v}")
+                end
+              elsif BOOLEAN_ATTRIBUTES.include?(key)
                 attrs << %(#{key}="#{key}") if value
               elsif !value.nil?
                 final_value = value.is_a?(Array) ? value.join(" ") : value
-                final_value = html_escape(final_value) if escape
+                final_value = ERB::Util.html_escape(final_value) if escape
                 attrs << %(#{key}="#{final_value}")
               end
             end
diff --git a/actionpack/lib/action_view/helpers/text_helper.rb b/actionpack/lib/action_view/helpers/text_helper.rb
index c1de5c8cb3..2d3c5fe7e7 100644
--- a/actionpack/lib/action_view/helpers/text_helper.rb
+++ b/actionpack/lib/action_view/helpers/text_helper.rb
@@ -9,6 +9,24 @@ module ActionView
     # and transforming strings, which can reduce the amount of inline Ruby code in
     # your views. These helper methods extend Action View making them callable
     # within your template files.
+    #
+    # ==== Sanitization
+    #
+    # Most text helpers by default sanitize the given content, but do not escape it.
+    # This means HTML tags will appear in the page but all malicious code will be removed.
+    # Let's look at some examples using the +simple_format+ method:
+    #
+    #   simple_format('<a href="http://example.com/">Example</a>')
+    #   # => "<p><a href=\"http://example.com/\">Example</a></p>"
+    #
+    #   simple_format('<a href="javascript:alert('no!')">Example</a>')
+    #   # => "<p><a>Example</a></p>"
+    #
+    # If you want to escape all content, you should invoke the +h+ method before
+    # calling the text helper.
+    #
+    #   simple_format h('<a href="http://example.com/">Example</a>')
+    #   # => "<p>&lt;a href=\"http://example.com/\"&gt;Example&lt;/a&gt;</p>"
     module TextHelper
       extend ActiveSupport::Concern
 
@@ -134,6 +152,8 @@ module ActionView
       #   excerpt('This is an example', 'an', 5)                   # => ...s is an exam...
       #   excerpt('This is also an example', 'an', 8, '<chop> ')   # => <chop> is also an example
       def excerpt(text, phrase, *args)
+        return unless text && phrase
+
         options = args.extract_options!
         unless args.empty?
           options[:radius] = args[0] || 100
@@ -141,21 +161,16 @@ module ActionView
         end
         options.reverse_merge!(:radius => 100, :omission => "...")
 
-        if text && phrase
-          phrase = Regexp.escape(phrase)
+        phrase = Regexp.escape(phrase)
+        return unless found_pos = text.mb_chars =~ /(#{phrase})/i
 
-          if found_pos = text.mb_chars =~ /(#{phrase})/i
-            start_pos = [ found_pos - options[:radius], 0 ].max
-            end_pos   = [ [ found_pos + phrase.mb_chars.length + options[:radius] - 1, 0].max, text.mb_chars.length ].min
+        start_pos = [ found_pos - options[:radius], 0 ].max
+        end_pos   = [ [ found_pos + phrase.mb_chars.length + options[:radius] - 1, 0].max, text.mb_chars.length ].min
 
-            prefix  = start_pos > 0 ? options[:omission] : ""
-            postfix = end_pos < text.mb_chars.length - 1 ? options[:omission] : ""
+        prefix  = start_pos > 0 ? options[:omission] : ""
+        postfix = end_pos < text.mb_chars.length - 1 ? options[:omission] : ""
 
-            prefix + text.mb_chars[start_pos..end_pos].strip + postfix
-          else
-            nil
-          end
-        end
+        prefix + text.mb_chars[start_pos..end_pos].strip + postfix
       end
 
       # Attempts to pluralize the +singular+ word unless +count+ is 1. If
@@ -219,6 +234,10 @@ module ActionView
       #
       # You can pass any HTML attributes into <tt>html_options</tt>.  These
       # will be added to all created paragraphs.
+      #
+      # ==== Options
+      # * <tt>:sanitize</tt> - If +false+, does not sanitize +text+.
+      #
       # ==== Examples
       #   my_text = "Here is some basic text...\n...with a line break."
       #
@@ -232,6 +251,9 @@ module ActionView
       #
       #   simple_format("Look ma! A class!", :class => 'description')
       #   # => "<p class='description'>Look ma! A class!</p>"
+      #
+      #   simple_format("<span>I'm allowed!</span> It's true.", {}, :sanitize => false)
+      #   # => "<p><span>I'm allowed!</span> It's true.</p>"
       def simple_format(text, html_options={}, options={})
         text = ''.html_safe if text.nil?
         start_tag = tag('p', html_options, true)
@@ -263,7 +285,7 @@ module ActionView
       #
       #   post_body = "Welcome to my new blog at http://www.myblog.com/.  Please e-mail me at me@email.com."
       #   auto_link(post_body, :html => { :target => '_blank' }) do |text|
-      #     truncate(text, 15)
+      #     truncate(text, :length => 15)
       #   end
       #   # => "Welcome to my new blog at <a href=\"http://www.myblog.com/\" target=\"_blank\">http://www.m...</a>.
       #         Please e-mail me at <a href=\"mailto:me@email.com\">me@email.com</a>."
@@ -345,10 +367,10 @@ module ActionView
         values.unshift(first_value)
 
         cycle = get_cycle(name)
-        if (cycle.nil? || cycle.values != values)
+        unless cycle && cycle.values == values
           cycle = set_cycle(name, Cycle.new(*values))
         end
-        return cycle.to_s
+        cycle.to_s
       end
 
       # Returns the current cycle string after a cycle has been started. Useful
@@ -365,7 +387,7 @@ module ActionView
       #   <% end %>
       def current_cycle(name = "default")
         cycle = get_cycle(name)
-        cycle.current_value unless cycle.nil?
+        cycle.current_value if cycle
       end
 
       # Resets a cycle so that it starts from the first element the next time
@@ -389,7 +411,7 @@ module ActionView
       #   </table>
       def reset_cycle(name = "default")
         cycle = get_cycle(name)
-        cycle.reset unless cycle.nil?
+        cycle.reset if cycle
       end
 
       class Cycle #:nodoc:
@@ -444,7 +466,7 @@ module ActionView
         end
 
         AUTO_LINK_RE = %r{
-            (?: ([\w+.:-]+:)// | www\. )
+            (?: ([0-9A-Za-z+.:-]+:)// | www\. )
             [^\s<]+
           }x
 
@@ -462,7 +484,7 @@ module ActionView
           text.gsub(AUTO_LINK_RE) do
             scheme, href = $1, $&
             punctuation = []
-            
+
             if auto_linked?($`, $')
               # do not change string; URL is already linked
               href
@@ -507,7 +529,7 @@ module ActionView
             end
           end
         end
-        
+
         # Detects already linked context or position in the middle of a tag
         def auto_linked?(left, right)
           (left =~ AUTO_LINK_CRE[0] and right =~ AUTO_LINK_CRE[1]) or
diff --git a/actionpack/lib/action_view/helpers/translation_helper.rb b/actionpack/lib/action_view/helpers/translation_helper.rb
index dac9c28ab7..59e6ce878f 100644
--- a/actionpack/lib/action_view/helpers/translation_helper.rb
+++ b/actionpack/lib/action_view/helpers/translation_helper.rb
@@ -1,38 +1,56 @@
 require 'action_view/helpers/tag_helper'
+require 'i18n/exceptions'
+
+module I18n
+  class ExceptionHandler
+    include Module.new {
+      def call(exception, locale, key, options)
+        exception.is_a?(MissingTranslationData) ? super.html_safe : super
+      end
+    }
+  end
+end
 
 module ActionView
   # = Action View Translation Helpers
   module Helpers
     module TranslationHelper
       # Delegates to I18n#translate but also performs three additional functions.
-      # First, it'll catch MissingTranslationData exceptions and turn them into 
-      # inline spans that contains the missing key, such that you can see in a 
-      # view what is missing where.
       #
-      # Second, it'll scope the key by the current partial if the key starts 
-      # with a period. So if you call <tt>translate(".foo")</tt> from the 
-      # <tt>people/index.html.erb</tt> template, you'll actually be calling 
+      # First, it'll pass the :rescue_format => :html option to I18n so that any caught
+      # MissingTranslationData exceptions will be turned into inline spans that
+      #
+      #   * have a "translation-missing" class set,
+      #   * contain the missing key as a title attribute and
+      #   * a titleized version of the last key segment as a text.
+      #
+      # E.g. the value returned for a missing translation key :"blog.post.title" will be
+      # <span class="translation_missing" title="translation missing: blog.post.title">Title</span>.
+      # This way your views will display rather reasonable strings but it will still
+      # be easy to spot missing translations.
+      #
+      # Second, it'll scope the key by the current partial if the key starts
+      # with a period. So if you call <tt>translate(".foo")</tt> from the
+      # <tt>people/index.html.erb</tt> template, you'll actually be calling
       # <tt>I18n.translate("people.index.foo")</tt>. This makes it less repetitive
       # to translate many keys within the same partials and gives you a simple framework
-      # for scoping them consistently. If you don't prepend the key with a period, 
+      # for scoping them consistently. If you don't prepend the key with a period,
       # nothing is converted.
       #
-      # Third, it'll mark the translation as safe HTML if the key has the suffix 
-      # "_html" or the last element of the key is the word "html". For example, 
-      # calling translate("footer_html") or translate("footer.html") will return 
+      # Third, it'll mark the translation as safe HTML if the key has the suffix
+      # "_html" or the last element of the key is the word "html". For example,
+      # calling translate("footer_html") or translate("footer.html") will return
       # a safe HTML string that won't be escaped by other HTML helper methods. This
       # naming convention helps to identify translations that include HTML tags so that
       # you know what kind of output to expect when you call translate in a template.
       def translate(key, options = {})
-        translation = I18n.translate(scope_key_by_partial(key), options.merge!(:raise => true))
+        options.merge!(:rescue_format => :html) unless options.key?(:rescue_format)
+        translation = I18n.translate(scope_key_by_partial(key), options)
         if html_safe_translation_key?(key) && translation.respond_to?(:html_safe)
           translation.html_safe
         else
           translation
         end
-      rescue I18n::MissingTranslationData => e
-        keys = I18n.normalize_keys(e.locale, e.key, e.options[:scope])
-        content_tag('span', keys.join(', '), :class => 'translation_missing')
       end
       alias :t :translate
 
@@ -45,8 +63,8 @@ module ActionView
       private
         def scope_key_by_partial(key)
           if key.to_s.first == "."
-            if @_virtual_path
-              @_virtual_path.gsub(%r{/_?}, ".") + key.to_s
+            if (path = @_template && @_template.virtual_path)
+              path.gsub(%r{/_?}, ".") + key.to_s
             else
               raise "Cannot use t(#{key.inspect}) shortcut because path is not available"
             end
diff --git a/actionpack/lib/action_view/helpers/url_helper.rb b/actionpack/lib/action_view/helpers/url_helper.rb
index a5c6718c58..2cd2dca711 100644
--- a/actionpack/lib/action_view/helpers/url_helper.rb
+++ b/actionpack/lib/action_view/helpers/url_helper.rb
@@ -1,6 +1,7 @@
 require 'action_view/helpers/javascript_helper'
 require 'active_support/core_ext/array/access'
 require 'active_support/core_ext/hash/keys'
+require 'active_support/core_ext/string/output_safety'
 require 'action_dispatch'
 
 module ActionView
@@ -13,7 +14,7 @@ module ActionView
     module UrlHelper
       # This helper may be included in any class that includes the
       # URL helpers of a routes (routes.url_helpers). Some methods
-      # provided here will only work in the4 context of a request
+      # provided here will only work in the context of a request
       # (link_to_unless_current, for instance), which must be provided
       # as a method called #request on the context.
 
@@ -22,6 +23,10 @@ module ActionView
       include ActionDispatch::Routing::UrlFor
       include TagHelper
 
+      def _routes_context
+        controller
+      end
+
       # Need to map default url options to controller one.
       # def default_url_options(*args) #:nodoc:
       #   controller.send(:default_url_options, *args)
@@ -91,7 +96,7 @@ module ActionView
       #   # => javascript:history.back()
       def url_for(options = {})
         options ||= {}
-        url = case options
+        case options
         when String
           options
         when Hash
@@ -102,8 +107,6 @@ module ActionView
         else
           polymorphic_path(options)
         end
-
-        url
       end
 
       # Creates a link tag of the given +name+ using a URL created by the set
@@ -235,16 +238,11 @@ module ActionView
           html_options = convert_options_to_data_attributes(options, html_options)
           url = url_for(options)
 
-          if html_options
-            html_options = html_options.stringify_keys
-            href = html_options['href']
-            tag_options = tag_options(html_options)
-          else
-            tag_options = nil
-          end
+          href = html_options['href']
+          tag_options = tag_options(html_options)
 
-          href_attr = "href=\"#{html_escape(url)}\"" unless href
-          "<a #{href_attr}#{tag_options}>#{html_escape(name || url)}</a>".html_safe
+          href_attr = "href=\"#{ERB::Util.html_escape(url)}\"" unless href
+          "<a #{href_attr}#{tag_options}>#{ERB::Util.html_escape(name || url)}</a>".html_safe
         end
       end
 
@@ -255,8 +253,9 @@ module ActionView
       # using the +link_to+ method with the <tt>:method</tt> modifier as described in
       # the +link_to+ documentation.
       #
-      # The generated form element has a class name of <tt>button_to</tt>
-      # to allow styling of the form itself and its children. You can control
+      # By default, the generated form element has a class name of <tt>button_to</tt>
+      # to allow styling of the form itself and its children. This can be changed
+      # using the <tt>:form_class</tt> modifier within +html_options+. You can control
       # the form submission and input element behavior using +html_options+.
       # This method accepts the <tt>:method</tt> and <tt>:confirm</tt> modifiers
       # described in the +link_to+ documentation. If no <tt>:method</tt> modifier
@@ -269,13 +268,16 @@ module ActionView
       # The +options+ hash accepts the same options as url_for.
       #
       # There are a few special +html_options+:
-      # * <tt>:method</tt> - Specifies the anchor name to be appended to the path.
-      # * <tt>:disabled</tt> - Specifies the anchor name to be appended to the path.
+      # * <tt>:method</tt> - Symbol of HTTP verb. Supported verbs are <tt>:post</tt>, <tt>:get</tt>,
+      #   <tt>:delete</tt> and <tt>:put</tt>. By default it will be <tt>:post</tt>.
+      # * <tt>:disabled</tt> - If set to true, it will generate a disabled button.
       # * <tt>:confirm</tt> - This will use the unobtrusive JavaScript driver to
       #   prompt with the question specified. If the user accepts, the link is
       #   processed normally, otherwise no action is taken.
       # * <tt>:remote</tt> -  If set to true, will allow the Unobtrusive JavaScript drivers to control the
       #   submit behaviour. By default this behaviour is an ajax submit.
+      # * <tt>:form_class</tt> - This controls the class of the form within which the submit button will
+      #   be placed
       #
       # ==== Examples
       #   <%= button_to "New", :action => "new" %>
@@ -284,6 +286,12 @@ module ActionView
       #   #    </form>"
       #
       #
+      #   <%= button_to "New", :action => "new", :form_class => "new-thing" %>
+      #   # => "<form method="post" action="/controller/new" class="new-thing">
+      #   #      <div><input value="New" type="submit" /></div>
+      #   #    </form>"
+      #
+      #
       #   <%= button_to "Delete Image", { :action => "delete", :id => @image.id },
       #             :confirm => "Are you sure?", :method => :delete %>
       #   # => "<form method="post" action="/images/delete/1" class="button_to">
@@ -313,6 +321,7 @@ module ActionView
         end
 
         form_method = method.to_s == 'get' ? 'get' : 'post'
+        form_class = html_options.delete('form_class') || 'button_to'
 
         remote = html_options.delete('remote')
 
@@ -328,7 +337,7 @@ module ActionView
 
         html_options.merge!("type" => "submit", "value" => name)
 
-        ("<form method=\"#{form_method}\" action=\"#{html_escape(url)}\" #{"data-remote=\"true\"" if remote} class=\"button_to\"><div>" +
+        ("<form method=\"#{form_method}\" action=\"#{ERB::Util.html_escape(url)}\" #{"data-remote=\"true\"" if remote} class=\"#{ERB::Util.html_escape(form_class)}\"><div>" +
           method_tag + tag("input", html_options) + request_token_tag + "</div></form>").html_safe
       end
 
@@ -367,8 +376,8 @@ module ActionView
       # "Go Back" link instead of a link to the comments page, we could do something like this...
       #
       #    <%=
-      #        link_to_unless_current("Comment", { :controller => 'comments', :action => 'new}) do
-      #           link_to("Go back", { :controller => 'posts', :action => 'index' })
+      #        link_to_unless_current("Comment", { :controller => "comments", :action => "new" }) do
+      #           link_to("Go back", { :controller => "posts", :action => "index" })
       #        end
       #     %>
       def link_to_unless_current(name, options = {}, html_options = {}, &block)
@@ -474,43 +483,41 @@ module ActionView
       #            :subject => "This is an example email"
       #   # => <a href="mailto:me@domain.com?cc=ccaddress@domain.com&subject=This%20is%20an%20example%20email">My email</a>
       def mail_to(email_address, name = nil, html_options = {})
-        email_address = html_escape(email_address)
+        email_address = ERB::Util.html_escape(email_address)
 
         html_options = html_options.stringify_keys
         encode = html_options.delete("encode").to_s
-        cc, bcc, subject, body = html_options.delete("cc"), html_options.delete("bcc"), html_options.delete("subject"), html_options.delete("body")
 
-        extras = []
-        extras << "cc=#{Rack::Utils.escape(cc).gsub("+", "%20")}" unless cc.nil?
-        extras << "bcc=#{Rack::Utils.escape(bcc).gsub("+", "%20")}" unless bcc.nil?
-        extras << "body=#{Rack::Utils.escape(body).gsub("+", "%20")}" unless body.nil?
-        extras << "subject=#{Rack::Utils.escape(subject).gsub("+", "%20")}" unless subject.nil?
-        extras = extras.empty? ? '' : '?' + html_escape(extras.join('&'))
+        extras = %w{ cc bcc body subject }.map { |item|
+          option = html_options.delete(item) || next
+          "#{item}=#{Rack::Utils.escape(option).gsub("+", "%20")}"
+        }.compact
+        extras = extras.empty? ? '' : '?' + ERB::Util.html_escape(extras.join('&'))
 
         email_address_obfuscated = email_address.dup
-        email_address_obfuscated.gsub!(/@/, html_options.delete("replace_at")) if html_options.has_key?("replace_at")
-        email_address_obfuscated.gsub!(/\./, html_options.delete("replace_dot")) if html_options.has_key?("replace_dot")
-
-        string = ''
-
-        if encode == "javascript"
-          "document.write('#{content_tag("a", name || email_address_obfuscated.html_safe, html_options.merge("href" => "mailto:#{email_address}#{extras}".html_safe))}');".each_byte do |c|
+        email_address_obfuscated.gsub!(/@/, html_options.delete("replace_at")) if html_options.key?("replace_at")
+        email_address_obfuscated.gsub!(/\./, html_options.delete("replace_dot")) if html_options.key?("replace_dot")
+        case encode
+        when "javascript"
+          string = ''
+          html   = content_tag("a", name || email_address_obfuscated.html_safe, html_options.merge("href" => "mailto:#{email_address}#{extras}".html_safe))
+          html   = escape_javascript(html)
+          "document.write('#{html}');".each_byte do |c|
             string << sprintf("%%%x", c)
           end
           "<script type=\"#{Mime::JS}\">eval(decodeURIComponent('#{string}'))</script>".html_safe
-        elsif encode == "hex"
-          email_address_encoded = ''
-          email_address_obfuscated.each_byte do |c|
-            email_address_encoded << sprintf("&#%d;", c)
-          end
-
-          protocol = 'mailto:'
-          protocol.each_byte { |c| string << sprintf("&#%d;", c) }
-
-          email_address.each_byte do |c|
+        when "hex"
+          email_address_encoded = email_address_obfuscated.unpack('C*').map {|c|
+            sprintf("&#%d;", c)
+          }.join
+
+          string = 'mailto:'.unpack('C*').map { |c|
+            sprintf("&#%d;", c)
+          }.join + email_address.unpack('C*').map { |c|
             char = c.chr
-            string << (char =~ /\w/ ? sprintf("%%%x", c) : char)
-          end
+            char =~ /\w/ ? sprintf("%%%x", c) : char
+          }.join
+
           content_tag "a", name || email_address_encoded.html_safe, html_options.merge("href" => "#{string}#{extras}".html_safe)
         else
           content_tag "a", name || email_address_obfuscated.html_safe, html_options.merge("href" => "mailto:#{email_address}#{extras}".html_safe)
@@ -586,34 +593,31 @@ module ActionView
 
       private
         def convert_options_to_data_attributes(options, html_options)
-          html_options = {} if html_options.nil?
-          html_options = html_options.stringify_keys
+          if html_options.nil?
+            link_to_remote_options?(options) ? {'data-remote' => 'true'} : {}
+          else
+            html_options = html_options.stringify_keys
+            html_options['data-remote'] = 'true' if link_to_remote_options?(options) || link_to_remote_options?(html_options)
 
-          if (options.is_a?(Hash) && options.key?('remote') && options.delete('remote')) || (html_options.is_a?(Hash) && html_options.key?('remote') && html_options.delete('remote'))
-            html_options['data-remote'] = 'true'
-          end
+            disable_with = html_options.delete("disable_with")
+            confirm = html_options.delete('confirm')
+            method  = html_options.delete('method')
 
-          confirm = html_options.delete("confirm")
+            html_options["data-disable-with"] = disable_with if disable_with
+            html_options["data-confirm"] = confirm if confirm
+            add_method_to_attributes!(html_options, method)   if method
 
-          if html_options.key?("popup")
-            ActiveSupport::Deprecation.warn(":popup has been deprecated", caller)
+            html_options
           end
-
-          method, href = html_options.delete("method"), html_options['href']
-
-          add_confirm_to_attributes!(html_options, confirm) if confirm
-          add_method_to_attributes!(html_options, method)   if method
-
-          html_options
         end
 
-        def add_confirm_to_attributes!(html_options, confirm)
-          html_options["data-confirm"] = confirm if confirm
+        def link_to_remote_options?(options)
+          options.is_a?(Hash) && options.key?('remote') && options.delete('remote')
         end
 
         def add_method_to_attributes!(html_options, method)
-          html_options["rel"] = "nofollow" if method && method.to_s.downcase != "get"
-          html_options["data-method"] = method if method
+          html_options["rel"] = "nofollow" if method.to_s.downcase != "get"
+          html_options["data-method"] = method
         end
 
         def options_for_javascript(options)
diff --git a/actionpack/lib/action_view/locale/en.yml b/actionpack/lib/action_view/locale/en.yml
index 9004e52c5b..eb816b9446 100644
--- a/actionpack/lib/action_view/locale/en.yml
+++ b/actionpack/lib/action_view/locale/en.yml
@@ -5,7 +5,7 @@
     format:
       # Sets the separator between the units, for more precision (e.g. 1.0 / 2.0 == 0.5)
       separator: "."
-      # Delimets thousands (e.g. 1,000,000 is a million) (always in groups of three)
+      # Delimits thousands (e.g. 1,000,000 is a million) (always in groups of three)
       delimiter: ","
       # Number of decimals, behind the separator (the number 1 with a precision of 2 gives: 1.00)
       precision: 3
diff --git a/actionpack/lib/action_view/log_subscriber.rb b/actionpack/lib/action_view/log_subscriber.rb
index 443a0eafd1..29ffbd6fdd 100644
--- a/actionpack/lib/action_view/log_subscriber.rb
+++ b/actionpack/lib/action_view/log_subscriber.rb
@@ -7,7 +7,7 @@ module ActionView
       message = "Rendered #{from_rails_root(event.payload[:identifier])}"
       message << " within #{from_rails_root(event.payload[:layout])}" if event.payload[:layout]
       message << (" (%.1fms)" % event.duration)
-      info(message)        
+      info(message)
     end
     alias :render_partial :render_template
     alias :render_collection :render_template
diff --git a/actionpack/lib/action_view/lookup_context.rb b/actionpack/lib/action_view/lookup_context.rb
index 3ea8b86af1..06c607931d 100644
--- a/actionpack/lib/action_view/lookup_context.rb
+++ b/actionpack/lib/action_view/lookup_context.rb
@@ -10,7 +10,7 @@ module ActionView
   # this key is generated just once during the request, it speeds up all cache accesses.
   class LookupContext #:nodoc:
     mattr_accessor :fallbacks
-    @@fallbacks = [FileSystemResolver.new(""), FileSystemResolver.new("/")]
+    @@fallbacks = FallbackFileSystemResolver.instances
 
     mattr_accessor :registered_details
     self.registered_details = []
@@ -61,6 +61,7 @@ module ActionView
     def initialize(view_paths, details = {})
       @details, @details_key = { :handlers => default_handlers }, nil
       @frozen_formats, @skip_default_locale = false, false
+      @cache = true
 
       self.view_paths = view_paths
       self.registered_detail_setters.each do |key, setter|
@@ -77,17 +78,17 @@ module ActionView
         @view_paths = ActionView::Base.process_view_paths(paths)
       end
 
-      def find(name, prefix = nil, partial = false)
-        @view_paths.find(*args_for_lookup(name, prefix, partial))
+      def find(name, prefixes = [], partial = false, keys = [])
+        @view_paths.find(*args_for_lookup(name, prefixes, partial, keys))
       end
       alias :find_template :find
 
-      def find_all(name, prefix = nil, partial = false)
-        @view_paths.find_all(*args_for_lookup(name, prefix, partial))
+      def find_all(name, prefixes = [], partial = false, keys = [])
+        @view_paths.find_all(*args_for_lookup(name, prefixes, partial, keys))
       end
 
-      def exists?(name, prefix = nil, partial = false)
-        @view_paths.exists?(*args_for_lookup(name, prefix, partial))
+      def exists?(name, prefixes = [], partial = false, keys = [])
+        @view_paths.exists?(*args_for_lookup(name, prefixes, partial, keys))
       end
       alias :template_exists? :exists?
 
@@ -106,18 +107,26 @@ module ActionView
 
     protected
 
-      def args_for_lookup(name, prefix, partial) #:nodoc:
-        name, prefix = normalize_name(name, prefix)
-        [name, prefix, partial || false, @details, details_key]
+      def args_for_lookup(name, prefixes, partial, keys) #:nodoc:
+        name, prefixes = normalize_name(name, prefixes)
+        [name, prefixes, partial || false, @details, details_key, keys]
       end
 
       # Support legacy foo.erb names even though we now ignore .erb
       # as well as incorrectly putting part of the path in the template
       # name instead of the prefix.
-      def normalize_name(name, prefix) #:nodoc:
+      def normalize_name(name, prefixes) #:nodoc:
         name  = name.to_s.gsub(handlers_regexp, '')
         parts = name.split('/')
-        return parts.pop, [prefix, *parts].compact.join("/")
+        name  = parts.pop
+
+        prefixes = if prefixes.blank?
+          [parts.join('/')]
+        else
+          prefixes.map { |prefix| [prefix, *parts].compact.join('/') }
+        end
+
+        return name, prefixes
       end
 
       def default_handlers #:nodoc:
@@ -130,10 +139,20 @@ module ActionView
     end
 
     module Details
+      attr_accessor :cache
+
       # Calculate the details key. Remove the handlers from calculation to improve performance
       # since the user cannot modify it explicitly.
       def details_key #:nodoc:
-        @details_key ||= DetailsKey.get(@details)
+        @details_key ||= DetailsKey.get(@details) if @cache
+      end
+
+      # Temporary skip passing the details_key forward.
+      def disable_cache
+        old_value, @cache = @cache, false
+        yield
+      ensure
+        @cache = old_value
       end
 
       # Freeze the current formats in the lookup context. By freezing them, you are guaranteeing
@@ -145,11 +164,11 @@ module ActionView
         @frozen_formats = true
       end
 
-      # Overload formats= to reject [:"*/*"] values.
+      # Overload formats= to reject ["*/*"] values.
       def formats=(values)
         if values && values.size == 1
           value = values.first
-          values = nil    if value == :"*/*"
+          values = nil    if value == "*/*"
           values << :html if value == :js
         end
         super(values)
@@ -167,11 +186,11 @@ module ActionView
       end
 
       # Overload locale= to also set the I18n.locale. If the current I18n.config object responds
-      # to i18n_config, it means that it's has a copy of the original I18n configuration and it's
+      # to original_config, it means that it's has a copy of the original I18n configuration and it's
       # acting as proxy, which we need to skip.
       def locale=(value)
         if value
-          config = I18n.config.respond_to?(:i18n_config) ? I18n.config.i18n_config : I18n.config
+          config = I18n.config.respond_to?(:original_config) ? I18n.config.original_config : I18n.config
           config.locale = value
         end
 
@@ -226,4 +245,4 @@ module ActionView
     include Details
     include ViewPaths
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_view/render/partials.rb b/actionpack/lib/action_view/partials.rb
index 459aae94a2..c181689e62 100644
--- a/actionpack/lib/action_view/render/partials.rb
+++ b/actionpack/lib/action_view/partials.rb
@@ -12,19 +12,48 @@ module ActionView
   #
   #  <%= render :partial => "account" %>
   #
-  # This would render "advertiser/_account.erb" and pass the instance variable @account in as a local variable
+  # This would render "advertiser/_account.html.erb" and pass the instance variable @account in as a local variable
   # +account+ to the template for display.
   #
   # In another template for Advertiser#buy, we could have:
   #
   #   <%= render :partial => "account", :locals => { :account => @buyer } %>
   #
-  #   <% for ad in @advertisements %>
+  #   <% @advertisements.each do |ad| %>
   #     <%= render :partial => "ad", :locals => { :ad => ad } %>
   #   <% end %>
   #
-  # This would first render "advertiser/_account.erb" with @buyer passed in as the local variable +account+, then
-  # render "advertiser/_ad.erb" and pass the local variable +ad+ to the template for display.
+  # This would first render "advertiser/_account.html.erb" with @buyer passed in as the local variable +account+, then
+  # render "advertiser/_ad.html.erb" and pass the local variable +ad+ to the template for display.
+  #
+  # == The :as and :object options
+  #
+  # By default <tt>ActionView::Partials::PartialRenderer</tt> has its object in a local variable with the same
+  # name as the template. So, given
+  #
+  #   <%= render :partial => "contract" %>
+  #
+  # within contract we'll get <tt>@contract</tt> in the local variable +contract+, as if we had written
+  #
+  #   <%= render :partial => "contract", :locals => { :contract  => @contract } %>
+  #
+  # With the <tt>:as</tt> option we can specify a different name for said local variable. For example, if we
+  # wanted it to be +agreement+ instead of +contract+ we'd do:
+  #
+  #   <%= render :partial => "contract", :as => 'agreement' %>
+  #
+  # The <tt>:object</tt> option can be used to directly specify which object is rendered into the partial;
+  # useful when the template's object is elsewhere, in a different ivar or in a local variable for instance.
+  #
+  # Revisiting a previous example we could have written this code:
+  #
+  #   <%= render :partial => "account", :object => @buyer %>
+  #
+  #   <% @advertisements.each do |ad| %>
+  #     <%= render :partial => "ad", :object => ad %>
+  #   <% end %>
+  #
+  # The <tt>:object</tt> and <tt>:as</tt> options can be used together.
   #
   # == Rendering a collection of partials
   #
@@ -35,10 +64,22 @@ module ActionView
   #
   #   <%= render :partial => "ad", :collection => @advertisements %>
   #
-  # This will render "advertiser/_ad.erb" and pass the local variable +ad+ to the template for display. An
+  # This will render "advertiser/_ad.html.erb" and pass the local variable +ad+ to the template for display. An
   # iteration counter will automatically be made available to the template with a name of the form
   # +partial_name_counter+. In the case of the example above, the template would be fed +ad_counter+.
   #
+  # The <tt>:as</tt> option may be used when rendering partials.
+  #
+  # You can specify a partial to be rendered between elements via the <tt>:spacer_template</tt> option.
+  # The following example will render <tt>advertiser/_ad_divider.html.erb</tt> between each ad partial:
+  #
+  #   <%= render :partial => "ad", :collection => @advertisements, :spacer_template => "ad_divider" %>
+  #
+  # If the given <tt>:collection</tt> is nil or empty, <tt>render</tt> will return nil. This will allow you
+  # to specify a text which will displayed instead by using this form:
+  #
+  #   <%= render(:partial => "ad", :collection => @advertisements) || "There's no ad to be displayed" %>
+  #
   # NOTE: Due to backwards compatibility concerns, the collection can't be one of hashes. Normally you'd also
   # just keep domain objects, like Active Records, in there.
   #
@@ -48,7 +89,7 @@ module ActionView
   #
   #   <%= render :partial => "advertisement/ad", :locals => { :ad => @advertisement } %>
   #
-  # This will render the partial "advertisement/_ad.erb" regardless of which controller this is being called from.
+  # This will render the partial "advertisement/_ad.html.erb" regardless of which controller this is being called from.
   #
   # == Rendering objects with the RecordIdentifier
   #
@@ -56,7 +97,7 @@ module ActionView
   # you're following its conventions for RecordIdentifier#partial_path. Examples:
   #
   #  # @account is an Account instance, so it uses the RecordIdentifier to replace
-  #  # <%= render :partial => "accounts/account", :locals => { :account => @buyer } %>
+  #  # <%= render :partial => "accounts/account", :locals => { :account => @account} %>
   #  <%= render :partial => @account %>
   #
   #  # @posts is an array of Post instances, so it uses the RecordIdentifier to replace
@@ -174,165 +215,12 @@ module ActionView
   #     <%- end -%>
   #   <% end %>
   module Partials
-    extend ActiveSupport::Concern
-
-    class PartialRenderer
-      PARTIAL_NAMES = Hash.new {|h,k| h[k] = {} }
-
-      def initialize(view_context, options, block)
-        @view           = view_context
-        @partial_names  = PARTIAL_NAMES[@view.controller.class.name]
-
-        setup(options, block)
-      end
-
-      def setup(options, block)
-        partial = options[:partial]
-
-        @options = options
-        @locals  = options[:locals] || {}
-        @block   = block
-
-        if String === partial
-          @object     = options[:object]
-          @path       = partial
-          @collection = collection
-        else
-          @object = partial
-
-          if @collection = collection
-            paths = @collection_paths = @collection.map { |o| partial_path(o) }
-            @path = paths.uniq.size == 1 ? paths.first : nil
-          else
-            @path = partial_path
-          end
-        end
-      end
-
-      def render
-        identifier = ((@template = find_template) ? @template.identifier : @path)
-
-        if @collection
-          ActiveSupport::Notifications.instrument("render_collection.action_view",
-            :identifier => identifier || "collection", :count => @collection.size) do
-            render_collection
-          end
-        else
-          content = ActiveSupport::Notifications.instrument("render_partial.action_view",
-            :identifier => identifier) do
-            render_partial
-          end
-
-          if !@block && (layout = @options[:layout])
-            content = @view._render_layout(find_template(layout), @locals){ content }
-          end
-
-          content
-        end
-      end
-
-      def render_collection
-        return nil if @collection.blank?
-
-        if @options.key?(:spacer_template)
-          spacer = find_template(@options[:spacer_template]).render(@view, @locals)
-        end
-
-        result = @template ? collection_with_template : collection_without_template
-        result.join(spacer).html_safe
-      end
-
-      def collection_with_template(template = @template)
-        segments, locals, template = [], @locals, @template
-
-        if @options[:as]
-          as = @options[:as]
-          counter = "#{as}_counter".to_sym
-        else
-          as = template.variable_name
-          counter = template.counter_name
-        end
-
-        locals[counter] = -1
-
-        @collection.each do |object|
-          locals[counter] += 1
-          locals[as] = object
-          segments << template.render(@view, locals)
-        end
-
-        segments
-      end
-
-      def collection_without_template(collection_paths = @collection_paths)
-        segments, locals = [], @locals
-        index, template  = -1, nil
-
-        if @options[:as]
-          as = @options[:as]
-          counter = "#{as}_counter"
-        end
-
-        @collection.each_with_index do |object, i|
-          template = find_template(collection_paths[i])
-          locals[as || template.variable_name] = object
-          locals[counter || template.counter_name] = (index += 1)
-
-          segments << template.render(@view, locals)
-        end
-
-        @template = template
-        segments
-      end
-
-      def render_partial(object = @object)
-        locals, view, template = @locals, @view, @template
-
-        object ||= locals[template.variable_name]
-        locals[@options[:as] || template.variable_name] = object
-
-        template.render(view, locals) do |*name|
-          view._layout_for(*name, &@block)
-        end
-      end
-
-    private
-
-      def collection
-        if @object.respond_to?(:to_ary)
-          @object
-        elsif @options.key?(:collection)
-          @options[:collection] || []
-        end
-      end
-
-      def find_template(path=@path)
-        return path unless path.is_a?(String)
-        prefix = @view.controller_path unless path.include?(?/)
-        @view.find_template(path, prefix, true)
-      end
-
-      def partial_path(object = @object)
-        @partial_names[object.class.name] ||= begin
-          object = object.to_model if object.respond_to?(:to_model)
-
-          object.class.model_name.partial_path.dup.tap do |partial|
-            path = @view.controller_path
-            partial.insert(0, "#{File.dirname(path)}/") if partial.include?(?/) && path.include?(?/)
-          end
-        end
-      end
-    end
-
     def _render_partial(options, &block) #:nodoc:
-      if defined?(@renderer)
-        @renderer.setup(options, block)
-      else
-        @renderer = PartialRenderer.new(self, options, block)
-      end
-
-      @renderer.render
+      _partial_renderer.setup(options, block).render
     end
 
+    def _partial_renderer #:nodoc:
+      @_partial_renderer ||= PartialRenderer.new(self)
+    end
   end
 end
diff --git a/actionpack/lib/action_view/paths.rb b/actionpack/lib/action_view/path_set.rb
index 9857d688d2..e3de3e1eac 100644
--- a/actionpack/lib/action_view/paths.rb
+++ b/actionpack/lib/action_view/path_set.rb
@@ -10,16 +10,16 @@ module ActionView #:nodoc:
       METHOD
     end
 
-    def find(path, prefix = nil, partial = false, details = {}, key = nil)
-      template = find_all(path, prefix, partial, details, key).first
-      raise MissingTemplate.new(self, "#{prefix}/#{path}", details, partial) unless template
-      template
+    def find(*args)
+      find_all(*args).first || raise(MissingTemplate.new(self, *args))
     end
 
-    def find_all(*args)
-      each do |resolver|
-        templates = resolver.find_all(*args)
-        return templates unless templates.empty?
+    def find_all(path, prefixes = [], *args)
+      prefixes.each do |prefix|
+        each do |resolver|
+          templates = resolver.find_all(path, prefix, *args)
+          return templates unless templates.empty?
+        end
       end
       []
     end
diff --git a/actionpack/lib/action_view/railtie.rb b/actionpack/lib/action_view/railtie.rb
index 33dfcbb803..501ec07b09 100644
--- a/actionpack/lib/action_view/railtie.rb
+++ b/actionpack/lib/action_view/railtie.rb
@@ -8,10 +8,10 @@ module ActionView
     config.action_view.stylesheet_expansions = {}
     config.action_view.javascript_expansions = { :defaults => ['prototype', 'effects', 'dragdrop', 'controls', 'rails'] }
 
-    initializer "action_view.cache_asset_timestamps" do |app|
+    initializer "action_view.cache_asset_ids" do |app|
       unless app.config.cache_classes
         ActiveSupport.on_load(:action_view) do
-          ActionView::Helpers::AssetTagHelper.cache_asset_timestamps = false
+          ActionView::Helpers::AssetTagHelper::AssetPaths.cache_asset_ids = false
         end
       end
     end
@@ -35,5 +35,13 @@ module ActionView
         end
       end
     end
+
+    initializer "action_view.caching" do |app|
+      ActiveSupport.on_load(:action_view) do
+        if app.config.action_view.cache_template_loading.nil?
+          ActionView::Resolver.caching = app.config.cache_classes
+        end
+      end
+    end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_view/render/layouts.rb b/actionpack/lib/action_view/render/layouts.rb
deleted file mode 100644
index a474783a20..0000000000
--- a/actionpack/lib/action_view/render/layouts.rb
+++ /dev/null
@@ -1,79 +0,0 @@
-module ActionView
-  # = Action View Layouts
-  module Layouts
-    # Returns the contents that are yielded to a layout, given a name or a block.
-    #
-    # You can think of a layout as a method that is called with a block. If the user calls
-    # <tt>yield :some_name</tt>, the block, by default, returns <tt>content_for(:some_name)</tt>.
-    # If the user calls simply +yield+, the default block returns <tt>content_for(:layout)</tt>.
-    #
-    # The user can override this default by passing a block to the layout:
-    #
-    #   # The template
-    #   <%= render :layout => "my_layout" do %>
-    #     Content
-    #   <% end %>
-    #
-    #   # The layout
-    #   <html>
-    #     <%= yield %>
-    #   </html>
-    #
-    # In this case, instead of the default block, which would return <tt>content_for(:layout)</tt>,
-    # this method returns the block that was passed in to <tt>render :layout</tt>, and the response
-    # would be
-    #
-    #   <html>
-    #     Content
-    #   </html>
-    #
-    # Finally, the block can take block arguments, which can be passed in by +yield+:
-    #
-    #   # The template
-    #   <%= render :layout => "my_layout" do |customer| %>
-    #     Hello <%= customer.name %>
-    #   <% end %>
-    #
-    #   # The layout
-    #   <html>
-    #     <%= yield Struct.new(:name).new("David") %>
-    #   </html>
-    #
-    # In this case, the layout would receive the block passed into <tt>render :layout</tt>,
-    # and the struct specified would be passed into the block as an argument. The result
-    # would be
-    #
-    #   <html>
-    #     Hello David
-    #   </html>
-    #
-    def _layout_for(name = nil, &block) #:nodoc:
-      if !block || name
-        @_content_for[name || :layout].html_safe
-      else
-        capture(&block)
-      end
-    end
-
-    # This is the method which actually finds the layout using details in the lookup
-    # context object. If no layout is found, it checks if at least a layout with
-    # the given name exists across all details before raising the error.
-    def find_layout(layout)
-      begin
-        with_layout_format do
-          layout =~ /^\// ?
-            with_fallbacks { find_template(layout) } : find_template(layout)
-        end
-      rescue ActionView::MissingTemplate => e
-        update_details(:formats => nil) do
-          raise unless template_exists?(layout)
-        end
-      end
-    end
-
-    # Contains the logic that actually renders the layout.
-    def _render_layout(layout, locals, &block) #:nodoc:
-      layout.render(self, locals){ |*name| _layout_for(*name, &block) }
-    end
-  end
-end
diff --git a/actionpack/lib/action_view/render/rendering.rb b/actionpack/lib/action_view/render/rendering.rb
deleted file mode 100644
index 5320245173..0000000000
--- a/actionpack/lib/action_view/render/rendering.rb
+++ /dev/null
@@ -1,67 +0,0 @@
-require 'active_support/core_ext/object/try'
-
-module ActionView
-  # = Action View Rendering
-  module Rendering
-    # Returns the result of a render that's dictated by the options hash. The primary options are:
-    #
-    # * <tt>:partial</tt> - See ActionView::Partials.
-    # * <tt>:update</tt> - Calls update_page with the block given.
-    # * <tt>:file</tt> - Renders an explicit template file (this used to be the old default), add :locals to pass in those.
-    # * <tt>:inline</tt> - Renders an inline template similar to how it's done in the controller.
-    # * <tt>:text</tt> - Renders the text passed in out.
-    #
-    # If no options hash is passed or :update specified, the default is to render a partial and use the second parameter
-    # as the locals hash.
-    def render(options = {}, locals = {}, &block)
-      case options
-      when Hash
-        if block_given?
-          _render_partial(options.merge(:partial => options[:layout]), &block)
-        elsif options.key?(:partial)
-          _render_partial(options)
-        else
-          template = _determine_template(options)
-          lookup_context.freeze_formats(template.formats, true)
-          _render_template(template, options[:layout], options)
-        end
-      when :update
-        update_page(&block)
-      else
-        _render_partial(:partial => options, :locals => locals)
-      end
-    end
-
-    # Determine the template to be rendered using the given options.
-    def _determine_template(options) #:nodoc:
-      if options.key?(:inline)
-        handler = Template.handler_class_for_extension(options[:type] || "erb")
-        Template.new(options[:inline], "inline template", handler, {})
-      elsif options.key?(:text)
-        Template::Text.new(options[:text], formats.try(:first))
-      elsif options.key?(:file)
-        with_fallbacks { find_template(options[:file], options[:prefix]) }
-      elsif options.key?(:template)
-        options[:template].respond_to?(:render) ?
-          options[:template] : find_template(options[:template], options[:prefix])
-      end
-    end
-
-    # Renders the given template. An string representing the layout can be
-    # supplied as well.
-    def _render_template(template, layout = nil, options = {}) #:nodoc:
-      locals = options[:locals] || {}
-      layout = find_layout(layout) if layout
-
-      ActiveSupport::Notifications.instrument("render_template.action_view",
-        :identifier => template.identifier, :layout => layout.try(:virtual_path)) do
-
-        content = template.render(self, locals) { |*name| _layout_for(*name) }
-        @_content_for[:layout] = content if layout
-
-        content = _render_layout(layout, locals) if layout
-        content
-      end
-    end
-  end
-end
diff --git a/actionpack/lib/action_view/renderer/abstract_renderer.rb b/actionpack/lib/action_view/renderer/abstract_renderer.rb
new file mode 100644
index 0000000000..4a52b3172e
--- /dev/null
+++ b/actionpack/lib/action_view/renderer/abstract_renderer.rb
@@ -0,0 +1,37 @@
+module ActionView
+  class AbstractRenderer #:nodoc:
+    delegate :find_template, :template_exists?, :with_fallbacks, :update_details,
+      :with_layout_format, :formats, :freeze_formats, :to => :@lookup_context
+
+    def initialize(view)
+      @view = view
+      @lookup_context = view.lookup_context
+    end
+
+    def render
+      raise NotImplementedError
+    end
+
+    # Checks if the given path contains a format and if so, change
+    # the lookup context to take this new format into account.
+    def wrap_formats(value)
+      return yield unless value.is_a?(String)
+
+      if value.sub!(formats_regexp, "")
+        update_details(:formats => [$1.to_sym]){ yield }
+      else
+        yield
+      end
+    end
+
+    def formats_regexp
+      @@formats_regexp ||= /\.(#{Mime::SET.symbols.join('|')})$/
+    end
+
+    protected
+
+    def instrument(name, options={})
+      ActiveSupport::Notifications.instrument("render_#{name}.action_view", options){ yield }
+    end
+  end
+end
diff --git a/actionpack/lib/action_view/renderer/partial_renderer.rb b/actionpack/lib/action_view/renderer/partial_renderer.rb
new file mode 100644
index 0000000000..94c0a8a8fb
--- /dev/null
+++ b/actionpack/lib/action_view/renderer/partial_renderer.rb
@@ -0,0 +1,167 @@
+require 'action_view/renderer/abstract_renderer'
+
+module ActionView
+  class PartialRenderer < AbstractRenderer #:nodoc:
+    PARTIAL_NAMES = Hash.new {|h,k| h[k] = {} }
+
+    def initialize(view)
+      super
+      @partial_names = PARTIAL_NAMES[@view.controller.class.name]
+    end
+
+    def setup(options, block)
+      partial = options[:partial]
+
+      @options = options
+      @locals  = options[:locals] || {}
+      @block   = block
+
+      if String === partial
+        @object     = options[:object]
+        @path       = partial
+        @collection = collection
+      else
+        @object = partial
+
+        if @collection = collection_from_object || collection
+          paths = @collection_data = @collection.map { |o| partial_path(o) }
+          @path = paths.uniq.size == 1 ? paths.first : nil
+        else
+          @path = partial_path
+        end
+      end
+
+      if @path
+        @variable, @variable_counter = retrieve_variable(@path)
+      else
+        paths.map! { |path| retrieve_variable(path).unshift(path) }
+      end
+
+      self
+    end
+
+    def render
+      wrap_formats(@path) do
+        identifier = ((@template = find_partial) ? @template.identifier : @path)
+
+        if @collection
+          instrument(:collection, :identifier => identifier || "collection", :count => @collection.size) do
+            render_collection
+          end
+        else
+          instrument(:partial, :identifier => identifier) do
+            render_partial
+          end
+        end
+      end
+    end
+
+    def render_collection
+      return nil if @collection.blank?
+
+      if @options.key?(:spacer_template)
+        spacer = find_template(@options[:spacer_template]).render(@view, @locals)
+      end
+
+      result = @template ? collection_with_template : collection_without_template
+      result.join(spacer).html_safe
+    end
+
+    def render_partial
+      locals, view, block = @locals, @view, @block
+      object, as = @object, @variable
+
+      if !block && (layout = @options[:layout])
+        layout = find_template(layout)
+      end
+
+      object ||= locals[as]
+      locals[as] = object
+
+      content = @template.render(view, locals) do |*name|
+        view._layout_for(*name, &block)
+      end
+
+      content = layout.render(view, locals){ content } if layout
+      content
+    end
+
+    private
+
+    def collection
+      if @options.key?(:collection)
+        collection = @options[:collection]
+        collection.respond_to?(:to_ary) ? collection.to_ary : []
+      end
+    end
+
+    def collection_from_object
+      if @object.respond_to?(:to_ary)
+        @object.to_ary
+      end
+    end
+
+    def find_partial
+      if path = @path
+        locals = @locals.keys
+        locals << @variable
+        locals << @variable_counter if @collection
+        find_template(path, locals)
+      end
+    end
+
+    def find_template(path=@path, locals=@locals.keys)
+      prefixes = path.include?(?/) ? [] : @view.controller_prefixes
+      @lookup_context.find_template(path, prefixes, true, locals)
+    end
+
+    def collection_with_template
+      segments, locals, template = [], @locals, @template
+      as, counter = @variable, @variable_counter
+
+      locals[counter] = -1
+
+      @collection.each do |object|
+        locals[counter] += 1
+        locals[as] = object
+        segments << template.render(@view, locals)
+      end
+
+      segments
+    end
+
+    def collection_without_template
+      segments, locals, collection_data = [], @locals, @collection_data
+      index, template, cache = -1, nil, {}
+      keys = @locals.keys
+
+      @collection.each_with_index do |object, i|
+        path, *data = collection_data[i]
+        template = (cache[path] ||= find_template(path, keys + data))
+        locals[data[0]] = object
+        locals[data[1]] = (index += 1)
+        segments << template.render(@view, locals)
+      end
+
+      @template = template
+      segments
+    end
+
+    def partial_path(object = @object)
+      @partial_names[object.class.name] ||= begin
+        object = object.to_model if object.respond_to?(:to_model)
+
+        object.class.model_name.partial_path.dup.tap do |partial|
+          path = @view.controller_prefixes.first
+          partial.insert(0, "#{File.dirname(path)}/") if partial.include?(?/) && path.include?(?/)
+        end
+      end
+    end
+
+    def retrieve_variable(path)
+      variable = @options[:as].try(:to_sym) || path[%r'_?(\w+)(\.\w+)*$', 1].to_sym
+      variable_counter = :"#{variable}_counter" if @collection
+      [variable, variable_counter]
+    end
+  end
+end
diff --git a/actionpack/lib/action_view/renderer/template_renderer.rb b/actionpack/lib/action_view/renderer/template_renderer.rb
new file mode 100644
index 0000000000..9ae1636131
--- /dev/null
+++ b/actionpack/lib/action_view/renderer/template_renderer.rb
@@ -0,0 +1,98 @@
+require 'set'
+require 'active_support/core_ext/object/try'
+require 'active_support/core_ext/array/wrap'
+require 'action_view/renderer/abstract_renderer'
+
+module ActionView
+  class TemplateRenderer < AbstractRenderer #:nodoc:
+    attr_reader :rendered
+
+    def initialize(view)
+      super
+      @rendered = Set.new
+    end
+
+    def render(options)
+      wrap_formats(options[:template] || options[:file]) do
+        template = determine_template(options)
+        render_template(template, options[:layout], options[:locals])
+      end
+    end
+
+    def render_once(options)
+      paths, locals = options[:once], options[:locals] || {}
+      layout, keys  = options[:layout], locals.keys
+      prefixes = options.fetch(:prefixes, @view.controller_prefixes)
+
+      raise "render :once expects a String or an Array to be given" unless paths
+
+      render_with_layout(layout, locals) do
+        contents = []
+        Array.wrap(paths).each do |path|
+          template = find_template(path, prefixes, false, keys)
+          contents << render_template(template, nil, locals) if @rendered.add?(template)
+        end
+        contents.join("\n")
+      end
+    end
+
+    # Determine the template to be rendered using the given options.
+    def determine_template(options) #:nodoc:
+      keys = options[:locals].try(:keys) || []
+
+      if options.key?(:text)
+        Template::Text.new(options[:text], formats.try(:first))
+      elsif options.key?(:file)
+        with_fallbacks { find_template(options[:file], options[:prefixes], false, keys) }
+      elsif options.key?(:inline)
+        handler = Template.handler_for_extension(options[:type] || "erb")
+        Template.new(options[:inline], "inline template", handler, :locals => keys)
+      elsif options.key?(:template)
+        options[:template].respond_to?(:render) ?
+          options[:template] : find_template(options[:template], options[:prefixes], false, keys)
+      end
+    end
+
+    # Renders the given template. An string representing the layout can be
+    # supplied as well.
+    def render_template(template, layout_name = nil, locals = {}) #:nodoc:
+      freeze_formats(template.formats, true)
+      view, locals = @view, locals || {}
+
+      render_with_layout(layout_name, locals) do |layout|
+        instrument(:template, :identifier => template.identifier, :layout => layout.try(:virtual_path)) do
+          template.render(view, locals) { |*name| view._layout_for(*name) }
+        end
+      end
+    end
+
+    def render_with_layout(path, locals) #:nodoc:
+      layout  = path && find_layout(path, locals.keys)
+      content = yield(layout)
+
+      if layout
+        view = @view
+        view.store_content_for(:layout, content)
+        layout.render(view, locals){ |*name| view._layout_for(*name) }
+      else
+        content
+      end
+    end
+
+    # This is the method which actually finds the layout using details in the lookup
+    # context object. If no layout is found, it checks if at least a layout with
+    # the given name exists across all details before raising the error.
+    def find_layout(layout, keys)
+      begin
+        with_layout_format do
+          layout =~ /^\// ?
+            with_fallbacks { find_template(layout, nil, false, keys) } : find_template(layout, nil, false, keys)
+        end
+      rescue ActionView::MissingTemplate => e
+        update_details(:formats => nil) do
+          raise unless template_exists?(layout)
+        end
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/action_view/rendering.rb b/actionpack/lib/action_view/rendering.rb
new file mode 100644
index 0000000000..baa5d2c3fd
--- /dev/null
+++ b/actionpack/lib/action_view/rendering.rb
@@ -0,0 +1,106 @@
+require 'active_support/core_ext/object/try'
+
+module ActionView
+  # = Action View Rendering
+  module Rendering
+    # Returns the result of a render that's dictated by the options hash. The primary options are:
+    #
+    # * <tt>:partial</tt> - See ActionView::Partials.
+    # * <tt>:update</tt> - Calls update_page with the block given.
+    # * <tt>:file</tt> - Renders an explicit template file (this used to be the old default), add :locals to pass in those.
+    # * <tt>:inline</tt> - Renders an inline template similar to how it's done in the controller.
+    # * <tt>:text</tt> - Renders the text passed in out.
+    # * <tt>:once</tt> - Accepts a string or an array of strings and Rails will ensure they each of them are rendered just once.
+    #
+    # If no options hash is passed or :update specified, the default is to render a partial and use the second parameter
+    # as the locals hash.
+    def render(options = {}, locals = {}, &block)
+      case options
+      when Hash
+        if block_given?
+          _render_partial(options.merge(:partial => options[:layout]), &block)
+        elsif options.key?(:partial)
+          _render_partial(options)
+        elsif options.key?(:once)
+          _render_once(options)
+        else
+          _render_template(options)
+        end
+      when :update
+        update_page(&block)
+      else
+        _render_partial(:partial => options, :locals => locals)
+      end
+    end
+
+    # Returns the contents that are yielded to a layout, given a name or a block.
+    #
+    # You can think of a layout as a method that is called with a block. If the user calls
+    # <tt>yield :some_name</tt>, the block, by default, returns <tt>content_for(:some_name)</tt>.
+    # If the user calls simply +yield+, the default block returns <tt>content_for(:layout)</tt>.
+    #
+    # The user can override this default by passing a block to the layout:
+    #
+    #   # The template
+    #   <%= render :layout => "my_layout" do %>
+    #     Content
+    #   <% end %>
+    #
+    #   # The layout
+    #   <html>
+    #     <%= yield %>
+    #   </html>
+    #
+    # In this case, instead of the default block, which would return <tt>content_for(:layout)</tt>,
+    # this method returns the block that was passed in to <tt>render :layout</tt>, and the response
+    # would be
+    #
+    #   <html>
+    #     Content
+    #   </html>
+    #
+    # Finally, the block can take block arguments, which can be passed in by +yield+:
+    #
+    #   # The template
+    #   <%= render :layout => "my_layout" do |customer| %>
+    #     Hello <%= customer.name %>
+    #   <% end %>
+    #
+    #   # The layout
+    #   <html>
+    #     <%= yield Struct.new(:name).new("David") %>
+    #   </html>
+    #
+    # In this case, the layout would receive the block passed into <tt>render :layout</tt>,
+    # and the struct specified would be passed into the block as an argument. The result
+    # would be
+    #
+    #   <html>
+    #     Hello David
+    #   </html>
+    #
+    def _layout_for(*args, &block)
+      name = args.first
+
+      if name.is_a?(Symbol)
+        @_content_for[name].html_safe
+      elsif block
+        capture(*args, &block)
+      else
+        @_content_for[:layout].html_safe
+      end
+    end
+
+    def _render_once(options) #:nodoc:
+      _template_renderer.render_once(options)
+    end
+
+    def _render_template(options) #:nodoc:
+      _template_renderer.render(options)
+    end
+
+    def _template_renderer #:nodoc:
+      @_template_renderer ||= TemplateRenderer.new(self)
+    end
+  end
+end
diff --git a/actionpack/lib/action_view/template.rb b/actionpack/lib/action_view/template.rb
index 40ff1f2182..96d506fac5 100644
--- a/actionpack/lib/action_view/template.rb
+++ b/actionpack/lib/action_view/template.rb
@@ -1,5 +1,6 @@
 require 'active_support/core_ext/array/wrap'
 require 'active_support/core_ext/object/blank'
+require 'active_support/core_ext/object/try'
 require 'active_support/core_ext/kernel/singleton_class'
 
 module ActionView
@@ -97,9 +98,12 @@ module ActionView
 
     extend Template::Handlers
 
-    attr_reader :source, :identifier, :handler, :virtual_path, :formats,
-                :original_encoding
+    attr_accessor :locals, :formats, :virtual_path
 
+    attr_reader :source, :identifier, :handler, :original_encoding, :updated_at
+
+    # This finalizer is needed (and exactly with a proc inside another proc)
+    # otherwise templates leak in development.
     Finalizer = proc do |method_name, mod|
       proc do
         mod.module_eval do
@@ -109,50 +113,80 @@ module ActionView
     end
 
     def initialize(source, identifier, handler, details)
-      @source             = source
-      @identifier         = identifier
-      @handler            = handler
-      @original_encoding  = nil
-
-      @virtual_path = details[:virtual_path]
-      @method_names = {}
+      format = details[:format] || (handler.default_format if handler.respond_to?(:default_format))
 
-      format   = details[:format] || :html
-      @formats = Array.wrap(format).map(&:to_sym)
+      @source            = source
+      @identifier        = identifier
+      @handler           = handler
+      @compiled          = false
+      @original_encoding = nil
+      @locals            = details[:locals] || []
+      @virtual_path      = details[:virtual_path]
+      @updated_at        = details[:updated_at] || Time.now
+      @formats = Array.wrap(format).map { |f| f.is_a?(Mime::Type) ? f.ref : f }
     end
 
+    # Render a template. If the template was not compiled yet, it is done
+    # exactly before rendering.
+    #
+    # This method is instrumented as "!render_template.action_view". Notice that
+    # we use a bang in this instrumentation because you don't want to
+    # consume this in production. This is only slow if it's being listened to.
     def render(view, locals, &block)
-      # Notice that we use a bang in this instrumentation because you don't want to
-      # consume this in production. This is only slow if it's being listened to.
+      old_template, view._template = view._template, self
       ActiveSupport::Notifications.instrument("!render_template.action_view", :virtual_path => @virtual_path) do
-        if view.is_a?(ActionView::CompiledTemplates)
-          mod = ActionView::CompiledTemplates
-        else
-          mod = view.singleton_class
-        end
-
-        method_name = compile(locals, view, mod)
+        compile!(view)
         view.send(method_name, locals, &block)
       end
     rescue Exception => e
-      if e.is_a?(Template::Error)
-        e.sub_template_of(self)
-        raise e
-      else
-        raise Template::Error.new(self, view.respond_to?(:assigns) ? view.assigns : {}, e)
-      end
+      handle_render_error(view, e)
+    ensure
+      view._template = old_template
     end
 
     def mime_type
       @mime_type ||= Mime::Type.lookup_by_extension(@formats.first.to_s) if @formats.first
     end
 
-    def variable_name
-      @variable_name ||= @virtual_path[%r'_?(\w+)(\.\w+)*$', 1].to_sym
+    # Receives a view object and return a template similar to self by using @virtual_path.
+    #
+    # This method is useful if you have a template object but it does not contain its source
+    # anymore since it was already compiled. In such cases, all you need to do is to call
+    # refresh passing in the view object.
+    #
+    # Notice this method raises an error if the template to be refreshed does not have a
+    # virtual path set (true just for inline templates).
+    def refresh(view)
+      raise "A template needs to have a virtual path in order to be refreshed" unless @virtual_path
+      lookup  = view.lookup_context
+      pieces  = @virtual_path.split("/")
+      name    = pieces.pop
+      partial = !!name.sub!(/^_/, "")
+      lookup.disable_cache do
+        lookup.find_template(name, [ pieces.join('/') ], partial, @locals)
+      end
+    end
+
+    # Expires this template by setting his updated_at date to Jan 1st, 1970.
+    def expire!
+      @updated_at = Time.utc(1970)
+    end
+
+    # Receives a view context and renders a template exactly like self by using
+    # the @virtual_path. It raises an error if no @virtual_path was given.
+    def rerender(view)
+      raise "A template needs to have a virtual path in order to be rerendered" unless @virtual_path
+      name = @virtual_path.dup
+      if name.sub!(/(^|\/)_([^\/]*)$/, '\1\2')
+        view.render :partial => name
+      else
+        view.render :template => @virtual_path
+      end
     end
 
-    def counter_name
-      @counter_name ||= "#{variable_name}_counter".to_sym
+    # Used to store template data by template handlers.
+    def data
+      @data ||= {}
     end
 
     def inspect
@@ -164,7 +198,27 @@ module ActionView
         end
     end
 
-    private
+    protected
+
+      # Compile a template. This method ensures a template is compiled
+      # just once and removes the source after it is compiled.
+      def compile!(view) #:nodoc:
+        return if @compiled
+
+        if view.is_a?(ActionView::CompiledTemplates)
+          mod = ActionView::CompiledTemplates
+        else
+          mod = view.singleton_class
+        end
+
+        compile(view, mod)
+
+        # Just discard the source if we have a virtual path. This
+        # means we can get the template back.
+        @source = nil if @virtual_path
+        @compiled = true
+      end
+
       # Among other things, this method is responsible for properly setting
       # the encoding of the source. Until this point, we assume that the
       # source is BINARY data. If no additional information is supplied,
@@ -185,11 +239,8 @@ module ActionView
       # encode the source into Encoding.default_internal. In general,
       # this means that templates will be UTF-8 inside of Rails,
       # regardless of the original source encoding.
-      def compile(locals, view, mod)
-        method_name = build_method_name(locals)
-        return method_name if view.respond_to?(method_name)
-
-        locals_code = locals.keys.map! { |key| "#{key} = local_assigns[:#{key}];" }.join
+      def compile(view, mod) #:nodoc:
+        method_name = self.method_name
 
         if source.encoding_aware?
           # Look for # encoding: *. If we find one, we'll encode the
@@ -223,15 +274,16 @@ module ActionView
           end
         end
 
-        code = @handler.call(self)
+        arity = @handler.respond_to?(:arity) ? @handler.arity : @handler.method(:call).arity
+        code  = arity.abs == 1 ? @handler.call(self) : @handler.call(self, view)
 
         # Make sure that the resulting String to be evalled is in the
         # encoding of the code
         source = <<-end_src
           def #{method_name}(local_assigns)
-            _old_virtual_path, @_virtual_path = @_virtual_path, #{@virtual_path.inspect};_old_output_buffer = @output_buffer;#{locals_code};#{code}
+            _old_output_buffer = @output_buffer;#{locals_code};#{code}
           ensure
-            @_virtual_path, @output_buffer = _old_virtual_path, _old_output_buffer
+            @output_buffer = _old_output_buffer
           end
         end_src
 
@@ -254,8 +306,6 @@ module ActionView
         begin
           mod.module_eval(source, identifier, 0)
           ObjectSpace.define_finalizer(self, Finalizer[method_name, mod])
-
-          method_name
         rescue Exception => e # errors from template code
           if logger = (view && view.logger)
             logger.debug "ERROR: compiling #{method_name} RAISED #{e}"
@@ -267,12 +317,27 @@ module ActionView
         end
       end
 
-      def build_method_name(locals)
-        @method_names[locals.keys.hash] ||= "_#{identifier_method_name}__#{@identifier.hash}_#{__id__}_#{locals.keys.hash}".gsub('-', "_")
+      def handle_render_error(view, e) #:nodoc:
+        if e.is_a?(Template::Error)
+          e.sub_template_of(self)
+          raise e
+        else
+          assigns  = view.respond_to?(:assigns) ? view.assigns : {}
+          template = @virtual_path ? refresh(view) : self
+          raise Template::Error.new(template, assigns, e)
+        end
+      end
+
+      def locals_code #:nodoc:
+        @locals.map { |key| "#{key} = local_assigns[:#{key}];" }.join
+      end
+
+      def method_name #:nodoc:
+        @method_name ||= "_#{identifier_method_name}__#{@identifier.hash}_#{__id__}".gsub('-', "_")
       end
 
-      def identifier_method_name
-        @identifier_method_name ||= inspect.gsub(/[^a-z_]/, '_')
+      def identifier_method_name #:nodoc:
+        inspect.gsub(/[^a-z_]/, '_')
       end
   end
 end
diff --git a/actionpack/lib/action_view/template/error.rb b/actionpack/lib/action_view/template/error.rb
index b1839b65e5..e246646963 100644
--- a/actionpack/lib/action_view/template/error.rb
+++ b/actionpack/lib/action_view/template/error.rb
@@ -27,7 +27,7 @@ module ActionView
   class MissingTemplate < ActionViewError #:nodoc:
     attr_reader :path
 
-    def initialize(paths, path, details, partial)
+    def initialize(paths, path, prefixes, partial, details, *)
       @path = path
       display_paths = paths.compact.map{ |p| p.to_s.inspect }.join(", ")
       template_type = if partial
@@ -38,20 +38,27 @@ module ActionView
         'template'
       end
 
-      super("Missing #{template_type} #{path} with #{details.inspect} in view paths #{display_paths}")
+      searched_paths = prefixes.map { |prefix| [prefix, path].join("/") }
+
+      out  = "Missing #{template_type} #{searched_paths.join(", ")} with #{details.inspect}. Searched in:\n"
+      out += paths.compact.map { |p| "  * #{p.to_s.inspect}\n" }.join
+      super out
     end
   end
 
   class Template
-    # The Template::Error exception is raised when the compilation of the template fails. This exception then gathers a
-    # bunch of intimate details and uses it to report a very precise exception message.
+    # The Template::Error exception is raised when the compilation or rendering of the template
+    # fails. This exception then gathers a bunch of intimate details and uses it to report a
+    # precise exception message.
     class Error < ActionViewError #:nodoc:
       SOURCE_CODE_RADIUS = 3
 
       attr_reader :original_exception, :backtrace
 
       def initialize(template, assigns, original_exception)
+        super(original_exception.message)
         @template, @assigns, @original_exception = template, assigns.dup, original_exception
+        @sub_templates = nil
         @backtrace = original_exception.backtrace
       end
 
@@ -59,10 +66,6 @@ module ActionView
         @template.identifier
       end
 
-      def message
-        ActiveSupport::Deprecation.silence { original_exception.message }
-      end
-
       def sub_template_message
         if @sub_templates
           "Trace of template inclusion: " +
diff --git a/actionpack/lib/action_view/template/handler.rb b/actionpack/lib/action_view/template/handler.rb
index 8ecc911519..636f3ebbad 100644
--- a/actionpack/lib/action_view/template/handler.rb
+++ b/actionpack/lib/action_view/template/handler.rb
@@ -1,4 +1,4 @@
-require "action_dispatch/http/mime_type"
+require 'action_dispatch/http/mime_type'
 require 'active_support/core_ext/class/attribute'
 
 # Legacy TemplateHandler stub
@@ -7,6 +7,8 @@ module ActionView
     module Handlers #:nodoc:
       module Compilable
         def self.included(base)
+          ActiveSupport::Deprecation.warn "Including Compilable in your template handler is deprecated. " <<
+            "Since Rails 3, all the API your template handler needs to implement is to respond to #call."
           base.extend(ClassMethods)
         end
 
@@ -26,6 +28,12 @@ module ActionView
       class_attribute :default_format
       self.default_format = Mime::HTML
 
+      def self.inherited(base)
+        ActiveSupport::Deprecation.warn "Inheriting from ActionView::Template::Handler is deprecated. " <<
+          "Since Rails 3, all the API your template handler needs to implement is to respond to #call."
+        super
+      end
+
       def self.call(template)
         raise "Need to implement #{self.class.name}#call(template)"
       end
@@ -35,7 +43,7 @@ module ActionView
       end
     end
   end
-  
+
   TemplateHandlers = Template::Handlers
   TemplateHandler = Template::Handler
 end
diff --git a/actionpack/lib/action_view/template/handlers.rb b/actionpack/lib/action_view/template/handlers.rb
index 84d6474dd1..4438199497 100644
--- a/actionpack/lib/action_view/template/handlers.rb
+++ b/actionpack/lib/action_view/template/handlers.rb
@@ -7,18 +7,14 @@ module ActionView #:nodoc:
       autoload :Builder, 'action_view/template/handlers/builder'
 
       def self.extended(base)
-        base.register_default_template_handler :erb, ERB
-        base.register_template_handler :rjs, RJS
-        base.register_template_handler :builder, Builder
-
-        # TODO: Depreciate old template extensions
-        base.register_template_handler :rhtml, ERB
-        base.register_template_handler :rxml, Builder
+        base.register_default_template_handler :erb, ERB.new
+        base.register_template_handler :rjs, RJS.new
+        base.register_template_handler :builder, Builder.new
       end
 
       @@template_handlers = {}
       @@default_template_handlers = nil
-    
+
       def self.extensions
         @@template_extensions ||= @@template_handlers.keys
       end
@@ -48,7 +44,13 @@ module ActionView #:nodoc:
       end
 
       def handler_class_for_extension(extension)
-        (extension && registered_template_handler(extension.to_sym)) || @@default_template_handlers
+        ActiveSupport::Deprecation.warn "handler_class_for_extension is deprecated. " <<
+          "Please use handler_for_extension instead", caller
+        handler_for_extension(extension)
+      end
+
+      def handler_for_extension(extension)
+        registered_template_handler(extension) || @@default_template_handlers
       end
     end
   end
diff --git a/actionpack/lib/action_view/template/handlers/builder.rb b/actionpack/lib/action_view/template/handlers/builder.rb
index a93cfca8aa..2c52cfd90e 100644
--- a/actionpack/lib/action_view/template/handlers/builder.rb
+++ b/actionpack/lib/action_view/template/handlers/builder.rb
@@ -1,11 +1,11 @@
 module ActionView
   module Template::Handlers
-    class Builder < Template::Handler
-      include Compilable
-
+    class Builder
+      # Default format used by Builder.
+      class_attribute :default_format
       self.default_format = Mime::XML
 
-      def compile(template)
+      def call(template)
         require 'builder'
         "xml = ::Builder::XmlMarkup.new(:indent => 2);" +
           "self.output_buffer = xml.target!;" +
diff --git a/actionpack/lib/action_view/template/handlers/erb.rb b/actionpack/lib/action_view/template/handlers/erb.rb
index ce609e01af..a36837afc8 100644
--- a/actionpack/lib/action_view/template/handlers/erb.rb
+++ b/actionpack/lib/action_view/template/handlers/erb.rb
@@ -1,6 +1,7 @@
 require 'active_support/core_ext/class/attribute_accessors'
 require 'active_support/core_ext/string/output_safety'
-require "action_view/template"
+require 'action_view/template'
+require 'action_view/template/handler'
 require 'erubis'
 
 module ActionView
@@ -14,13 +15,7 @@ module ActionView
       super(value.to_s)
     end
     alias :append= :<<
-
-    def append_if_string=(value)
-      if value.is_a?(String) && !value.is_a?(NonConcattingString)
-        ActiveSupport::Deprecation.warn("<% %> style block helpers are deprecated. Please use <%= %>", caller)
-        self << value
-      end
-    end
+    alias :safe_append= :safe_concat
   end
 
   class Template
@@ -45,45 +40,44 @@ module ActionView
           end
         end
 
-        def add_stmt(src, code)
+        def add_expr_escaped(src, code)
           if code =~ BLOCK_EXPR
-            src << '@output_buffer.append_if_string= ' << code
+            src << "@output_buffer.safe_append= " << code
           else
-            super
+            src << "@output_buffer.safe_concat((" << code << ").to_s);"
           end
         end
 
-        def add_expr_escaped(src, code)
-          src << '@output_buffer.append= ' << escaped_expr(code) << ';'
-        end
-
         def add_postamble(src)
           src << '@output_buffer.to_s'
         end
       end
 
-      class ERB < Handler
-        include Compilable
-
-        ##
-        # :singleton-method:
+      class ERB
         # Specify trim mode for the ERB compiler. Defaults to '-'.
         # See ERb documentation for suitable values.
-        cattr_accessor :erb_trim_mode
+        class_attribute :erb_trim_mode
         self.erb_trim_mode = '-'
 
+        # Default format used by ERB.
+        class_attribute :default_format
         self.default_format = Mime::HTML
 
-        cattr_accessor :erb_implementation
+        # Default implementation used.
+        class_attribute :erb_implementation
         self.erb_implementation = Erubis
 
         ENCODING_TAG = Regexp.new("\\A(<%#{ENCODING_FLAG}-?%>)[ \\t]*")
 
-        def self.handles_encoding?
+        def self.call(template)
+          new.call(template)
+        end
+
+        def handles_encoding?
           true
         end
 
-        def compile(template)
+        def call(template)
           if template.source.encoding_aware?
             # First, convert to BINARY, so in case the encoding is
             # wrong, we can still find an encoding tag
@@ -109,6 +103,7 @@ module ActionView
         end
 
       private
+
         def valid_encoding(string, encoding)
           # If a magic encoding comment was found, tag the
           # String with this encoding. This is for a case
diff --git a/actionpack/lib/action_view/template/handlers/rjs.rb b/actionpack/lib/action_view/template/handlers/rjs.rb
index 128be5077c..9d71059134 100644
--- a/actionpack/lib/action_view/template/handlers/rjs.rb
+++ b/actionpack/lib/action_view/template/handlers/rjs.rb
@@ -1,17 +1,13 @@
 module ActionView
   module Template::Handlers
-    class RJS < Template::Handler
-      include Compilable
-
+    class RJS
+      # Default format used by RJS.
+      class_attribute :default_format
       self.default_format = Mime::JS
 
-      def compile(template)
+      def call(template)
         "update_page do |page|;#{template.source}\nend"
       end
-
-      def default_format
-        Mime::JS
-      end
     end
   end
 end
diff --git a/actionpack/lib/action_view/template/resolver.rb b/actionpack/lib/action_view/template/resolver.rb
index c9e20ca14e..6c1063592f 100644
--- a/actionpack/lib/action_view/template/resolver.rb
+++ b/actionpack/lib/action_view/template/resolver.rb
@@ -5,9 +5,35 @@ require "action_view/template"
 module ActionView
   # = Action View Resolver
   class Resolver
+    # Keeps all information about view path and builds virtual path.
+    class Path < String
+      attr_reader :name, :prefix, :partial, :virtual
+      alias_method :partial?, :partial
+
+      def initialize(name, prefix, partial)
+        @name, @prefix, @partial = name, prefix, partial
+        rebuild(@name, @prefix, @partial)
+      end
+
+      def rebuild(name, prefix, partial)
+        @virtual = ""
+        @virtual << "#{prefix}/" unless prefix.empty?
+        @virtual << (partial ? "_#{name}" : name)
+
+        self.replace(@virtual)
+      end
+    end
+
+    cattr_accessor :caching
+    self.caching = true
+
+    class << self
+      alias :caching? :caching
+    end
+
     def initialize
-      @cached = Hash.new { |h1,k1| h1[k1] =
-        Hash.new { |h2,k2| h2[k2] = Hash.new { |h3, k3| h3[k3] = {} } } }
+      @cached = Hash.new { |h1,k1| h1[k1] = Hash.new { |h2,k2|
+        h2[k2] = Hash.new { |h3,k3| h3[k3] = Hash.new { |h4,k4| h4[k4] = {} } } } }
     end
 
     def clear_cache
@@ -15,68 +41,131 @@ module ActionView
     end
 
     # Normalizes the arguments and passes it on to find_template.
-    def find_all(name, prefix=nil, partial=false, details={}, key=nil)
-      cached(key, prefix, name, partial) do
+    def find_all(name, prefix=nil, partial=false, details={}, key=nil, locals=[])
+      cached(key, [name, prefix, partial], details, locals) do
         find_templates(name, prefix, partial, details)
       end
     end
 
   private
 
-    def caching?
-      @caching ||= !defined?(Rails.application) || Rails.application.config.cache_classes
-    end
+    delegate :caching?, :to => "self.class"
 
     # This is what child classes implement. No defaults are needed
     # because Resolver guarantees that the arguments are present and
     # normalized.
     def find_templates(name, prefix, partial, details)
-      raise NotImplementedError
+      raise NotImplementedError, "Subclasses must implement a find_templates(name, prefix, partial, details) method"
     end
 
-    def cached(key, prefix, name, partial)
-      return yield unless key && caching?
-      @cached[key][prefix][name][partial] ||= yield
+    # Helpers that builds a path. Useful for building virtual paths.
+    def build_path(name, prefix, partial)
+      Path.new(name, prefix, partial)
+    end
+
+    # Handles templates caching. If a key is given and caching is on
+    # always check the cache before hitting the resolver. Otherwise,
+    # it always hits the resolver but check if the resolver is fresher
+    # before returning it.
+    def cached(key, path_info, details, locals) #:nodoc:
+      name, prefix, partial = path_info
+      locals = sort_locals(locals)
+
+      if key && caching?
+        @cached[key][name][prefix][partial][locals] ||= decorate(yield, path_info, details, locals)
+      else
+        fresh = decorate(yield, path_info, details, locals)
+        return fresh unless key
+
+        scope = @cached[key][name][prefix][partial]
+        cache = scope[locals]
+        mtime = cache && cache.map(&:updated_at).max
+
+        if !mtime || fresh.empty?  || fresh.any? { |t| t.updated_at > mtime }
+          scope[locals] = fresh
+        else
+          cache
+        end
+      end
+    end
+
+    # Ensures all the resolver information is set in the template.
+    def decorate(templates, path_info, details, locals) #:nodoc:
+      cached = nil
+      templates.each do |t|
+        t.locals         = locals
+        t.formats        = details[:formats] || [:html] if t.formats.empty?
+        t.virtual_path ||= (cached ||= build_path(*path_info))
+      end
+    end
+
+    if :symbol.respond_to?("<=>")
+      def sort_locals(locals) #:nodoc:
+        locals.sort.freeze
+      end
+    else
+      def sort_locals(locals) #:nodoc:
+        locals = locals.map{ |l| l.to_s }
+        locals.sort!
+        locals.freeze
+      end
     end
   end
 
   class PathResolver < Resolver
-    EXTENSION_ORDER = [:locale, :formats, :handlers]
+    EXTENSIONS = [:locale, :formats, :handlers]
+    DEFAULT_PATTERN = ":prefix/:action{.:locale,}{.:formats,}{.:handlers,}"
 
-    def to_s
-      @path.to_s
+    def initialize(pattern=nil)
+      @pattern = pattern || DEFAULT_PATTERN
+      super()
     end
-    alias :to_path :to_s
 
-  private
+    private
 
     def find_templates(name, prefix, partial, details)
-      path = build_path(name, prefix, partial, details)
-      query(path, EXTENSION_ORDER.map { |ext| details[ext] }, details[:formats])
-    end
-
-    def build_path(name, prefix, partial, details)
-      path = ""
-      path << "#{prefix}/" unless prefix.empty?
-      path << (partial ? "_#{name}" : name)
-      path
+      path = build_path(name, prefix, partial)
+      extensions = Hash[EXTENSIONS.map { |ext| [ext, details[ext]] }.flatten(0)]
+      query(path, extensions, details[:formats])
     end
 
     def query(path, exts, formats)
-      query = File.join(@path, path)
+      query = build_query(path, exts)
+      templates = []
+      sanitizer = Hash.new { |h,k| h[k] = Dir["#{File.dirname(k)}/*"] }
 
-      exts.each do |ext|
-        query << '{' << ext.map {|e| e && ".#{e}" }.join(',') << ',}'
-      end
+      Dir[query].each do |p|
+        next if File.directory?(p) || !sanitizer[p].include?(p)
 
-      Dir[query].reject { |p| File.directory?(p) }.map do |p|
         handler, format = extract_handler_and_format(p, formats)
-
         contents = File.open(p, "rb") {|io| io.read }
 
-        Template.new(contents, File.expand_path(p), handler,
-          :virtual_path => path, :format => format)
+        templates << Template.new(contents, File.expand_path(p), handler,
+          :virtual_path => path.virtual, :format => format, :updated_at => mtime(p))
       end
+
+      templates
+    end
+
+    # Helper for building query glob string based on resolver's pattern. 
+    def build_query(path, exts)
+      query = @pattern.dup
+      query.gsub!(/\:prefix(\/)?/, path.prefix.empty? ? "" : "#{path.prefix}\\1") # prefix can be empty...
+      query.gsub!(/\:action/, path.partial? ? "_#{path.name}" : path.name)
+
+      exts.each { |ext, variants|
+        query.gsub!(/\:#{ext}/, "{#{variants.compact.uniq.join(',')}}")
+      }
+
+      query.gsub!(/\.{html,/, ".{html,text.html,")
+      query.gsub!(/\.{text,/, ".{text,text.plain,")
+
+      File.expand_path(query, @path)
+    end
+
+    # Returns the file mtime from the filesystem.
+    def mtime(p)
+      File.stat(p).mtime
     end
 
     # Extract handler and formats from path. If a format cannot be a found neither
@@ -85,26 +174,76 @@ module ActionView
     def extract_handler_and_format(path, default_formats)
       pieces = File.basename(path).split(".")
       pieces.shift
-
-      handler  = Template.handler_class_for_extension(pieces.pop)
-      format   = pieces.last && Mime[pieces.last] && pieces.pop.to_sym
-      format ||= handler.default_format if handler.respond_to?(:default_format)
-      format ||= default_formats
-
+      handler = Template.handler_for_extension(pieces.pop)
+      format  = pieces.last && Mime[pieces.last]
       [handler, format]
     end
   end
 
+  # A resolver that loads files from the filesystem. It allows to set your own
+  # resolving pattern. Such pattern can be a glob string supported by some variables.
+  #
+  # ==== Examples
+  #
+  # Default pattern, loads views the same way as previous versions of rails, eg. when you're
+  # looking for `users/new` it will produce query glob: `users/new{.{en},}{.{html,js},}{.{erb,haml,rjs},}`
+  #
+  #   FileSystemResolver.new("/path/to/views", ":prefix/:action{.:locale,}{.:formats,}{.:handlers,}")
+  #
+  # This one allows you to keep files with different formats in seperated subdirectories,
+  # eg. `users/new.html` will be loaded from `users/html/new.erb` or `users/new.html.erb`,
+  # `users/new.js` from `users/js/new.erb` or `users/new.js.erb`, etc.
+  #
+  #   FileSystemResolver.new("/path/to/views", ":prefix/{:formats/,}:action{.:locale,}{.:formats,}{.:handlers,}")
+  #
+  # If you don't specify pattern then the default will be used.
+  #
+  # In order to use any of the customized resolvers above in a Rails application, you just need
+  # to configure ActionController::Base.view_paths in an initializer, for example:
+  #
+  #   ActionController::Base.view_paths = FileSystemResolver.new(
+  #     Rails.root.join("app/views"),
+  #     ":prefix{/:locale}/:action{.:formats,}{.:handlers,}"
+  #   )
+  #
+  # ==== Pattern format and variables
+  #
+  # Pattern have to be a valid glob string, and it allows you to use the
+  # following variables:
+  #
+  # * <tt>:prefix</tt> - usualy the controller path
+  # * <tt>:action</tt> - name of the action
+  # * <tt>:locale</tt> - possible locale versions
+  # * <tt>:formats</tt> - possible request formats (for example html, json, xml...)
+  # * <tt>:handlers</tt> - possible handlers (for example erb, haml, builder...)
+  #
   class FileSystemResolver < PathResolver
-    def initialize(path)
+    def initialize(path, pattern=nil)
       raise ArgumentError, "path already is a Resolver class" if path.is_a?(Resolver)
-      super()
+      super(pattern)
       @path = File.expand_path(path)
     end
 
+    def to_s
+      @path.to_s
+    end
+    alias :to_path :to_s
+
     def eql?(resolver)
       self.class.equal?(resolver.class) && to_path == resolver.to_path
     end
     alias :== :eql?
   end
+
+  # The same as FileSystemResolver but does not allow templates to store
+  # a virtual path since it is invalid for such resolvers.
+  class FallbackFileSystemResolver < FileSystemResolver
+    def self.instances
+      [new(""), new("/")]
+    end
+
+    def decorate(*)
+      super.each { |t| t.virtual_path = nil }
+    end
+  end
 end
diff --git a/actionpack/lib/action_view/template/text.rb b/actionpack/lib/action_view/template/text.rb
index 51be831dfb..4261c3b5e2 100644
--- a/actionpack/lib/action_view/template/text.rb
+++ b/actionpack/lib/action_view/template/text.rb
@@ -25,10 +25,6 @@ module ActionView #:nodoc:
       def formats
         [@mime_type.to_sym]
       end
-
-      def partial?
-        false
-      end
     end
   end
 end
diff --git a/actionpack/lib/action_view/test_case.rb b/actionpack/lib/action_view/test_case.rb
index 137281e5e9..3e2ddffa16 100644
--- a/actionpack/lib/action_view/test_case.rb
+++ b/actionpack/lib/action_view/test_case.rb
@@ -20,12 +20,12 @@ module ActionView
       end
 
       def initialize
+        super
         self.class.controller_path = ""
         @request = ActionController::TestRequest.new
         @response = ActionController::TestResponse.new
 
         @request.env.delete('PATH_INFO')
-
         @params = {}
       end
     end
@@ -44,7 +44,7 @@ module ActionView
       include ActionView::Helpers
 
       attr_accessor :controller, :output_buffer, :rendered
-      
+
       module ClassMethods
         def tests(helper_class)
           self.helper_class = helper_class
@@ -74,6 +74,11 @@ module ActionView
           @helper_class ||= determine_default_helper_class(name)
         end
 
+        def new(*)
+          include_helper_modules!
+          super
+        end
+
       private
 
         def include_helper_modules!
@@ -89,7 +94,6 @@ module ActionView
         @output_buffer = ActiveSupport::SafeBuffer.new
         @rendered = ''
 
-        self.class.send(:include_helper_modules!)
         make_test_case_available_to_view!
         say_no_to_protect_against_forgery!
       end
@@ -99,7 +103,7 @@ module ActionView
       end
 
       def render(options = {}, local_assigns = {}, &block)
-        view.assign(_assigns)
+        view.assign(view_assigns)
         @rendered << output = view.render(options, local_assigns, &block)
         output
       end
@@ -123,6 +127,7 @@ module ActionView
 
       def say_no_to_protect_against_forgery!
         _helpers.module_eval do
+          remove_method :protect_against_forgery? if method_defined?(:protect_against_forgery?)
           def protect_against_forgery?
             false
           end
@@ -132,8 +137,10 @@ module ActionView
       def make_test_case_available_to_view!
         test_case_instance = self
         _helpers.module_eval do
-          define_method(:_test_case) { test_case_instance }
-          private :_test_case
+          unless private_method_defined?(:_test_case)
+            define_method(:_test_case) { test_case_instance }
+            private :_test_case
+          end
         end
       end
 
@@ -149,47 +156,59 @@ module ActionView
       # The instance of ActionView::Base that is used by +render+.
       def view
         @view ||= begin
-                     view = ActionView::Base.new(ActionController::Base.view_paths, {}, @controller)
-                     view.singleton_class.send :include, _helpers
-                     view.singleton_class.send :include, @controller._routes.url_helpers
-                     view.singleton_class.send :delegate, :alert, :notice, :to => "request.flash"
-                     view.extend(Locals)
-                     view.locals = self.locals
-                     view.output_buffer = self.output_buffer
-                     view
-                   end
+          view = @controller.view_context
+          view.singleton_class.send :include, _helpers
+          view.extend(Locals)
+          view.locals = self.locals
+          view.output_buffer = self.output_buffer
+          view
+        end
       end
 
       alias_method :_view, :view
 
-      EXCLUDE_IVARS = %w{
+      INTERNAL_IVARS = %w{
+        @__name__
+        @__io__
         @_assertion_wrapped
+        @_assertions
         @_result
+        @_routes
         @controller
         @layouts
         @locals
         @method_name
         @output_buffer
         @partials
+        @passed
         @rendered
         @request
         @routes
         @templates
+        @options
         @test_passed
         @view
         @view_context_class
       }
 
-      def _instance_variables
-        instance_variables.map(&:to_s) - EXCLUDE_IVARS
+      def _user_defined_ivars
+        instance_variables.map(&:to_s) - INTERNAL_IVARS
+      end
+
+      # Returns a Hash of instance variables and their values, as defined by
+      # the user in the test case, which are then assigned to the view being
+      # rendered. This is generally intended for internal use and extension
+      # frameworks.
+      def view_assigns
+        Hash[_user_defined_ivars.map do |var|
+          [var[1, var.length].to_sym, instance_variable_get(var)]
+        end]
       end
 
       def _assigns
-        _instance_variables.inject({}) do |hash, var|
-          name = var[1..-1].to_sym
-          hash[name] = instance_variable_get(var)
-          hash
-        end
+        ActiveSupport::Deprecation.warn "ActionView::TestCase#_assigns is deprecated and will be removed in future versions. " <<
+          "Please use view_assigns instead."
+        view_assigns
       end
 
       def _routes
@@ -198,7 +217,7 @@ module ActionView
 
       def method_missing(selector, *args)
         if @controller.respond_to?(:_routes) &&
-        @controller._routes.named_routes.helpers.include?(selector)
+          @controller._routes.named_routes.helpers.include?(selector)
           @controller.__send__(selector, *args)
         else
           super
diff --git a/actionpack/lib/action_view/testing/resolvers.rb b/actionpack/lib/action_view/testing/resolvers.rb
index 578c56c6c4..773dfcbb1d 100644
--- a/actionpack/lib/action_view/testing/resolvers.rb
+++ b/actionpack/lib/action_view/testing/resolvers.rb
@@ -8,36 +8,43 @@ module ActionView #:nodoc:
   class FixtureResolver < PathResolver
     attr_reader :hash
 
-    def initialize(hash = {})
-      super()
+    def initialize(hash = {}, pattern=nil)
+      super(pattern)
       @hash = hash
     end
 
+    def to_s
+      @hash.keys.join(', ')
+    end
+
   private
 
     def query(path, exts, formats)
-      query = Regexp.escape(path)
-      exts.each do |ext|
-        query << '(' << ext.map {|e| e && Regexp.escape(".#{e}") }.join('|') << '|)'
+      query = ""
+      EXTENSIONS.each do |ext|
+        query << '(' << exts[ext].map {|e| e && Regexp.escape(".#{e}") }.join('|') << '|)'
       end
+      query = /^(#{Regexp.escape(path)})#{query}$/
 
       templates = []
-      @hash.select { |k,v| k =~ /^#{query}$/ }.each do |path, source|
-        handler, format = extract_handler_and_format(path, formats)
-        templates << Template.new(source, path, handler,
-          :virtual_path => path, :format => format)
+      @hash.each do |_path, array|
+        source, updated_at = array
+        next unless _path =~ query
+        handler, format = extract_handler_and_format(_path, formats)
+        templates << Template.new(source, _path, handler,
+          :virtual_path => path.virtual, :format => format, :updated_at => updated_at)
       end
-
+      
       templates.sort_by {|t| -t.identifier.match(/^#{query}$/).captures.reject(&:blank?).size }
     end
   end
 
-  class NullResolver < ActionView::PathResolver
+  class NullResolver < PathResolver
     def query(path, exts, formats)
       handler, format = extract_handler_and_format(path, formats)
       [ActionView::Template.new("Template generated by Null Resolver", path, handler, :virtual_path => path, :format => format)]
     end
   end
-  
+
 end
 
diff --git a/actionpack/test/abstract/abstract_controller_test.rb b/actionpack/test/abstract/abstract_controller_test.rb
index 19855490b4..981c023d38 100644
--- a/actionpack/test/abstract/abstract_controller_test.rb
+++ b/actionpack/test/abstract/abstract_controller_test.rb
@@ -30,14 +30,14 @@ module AbstractController
     class RenderingController < AbstractController::Base
       include ::AbstractController::Rendering
 
-      def _prefix() end
+      def _prefixes
+        []
+      end
 
       def render(options = {})
         if options.is_a?(String)
           options = {:_template_name => options}
         end
-
-        options[:_prefix] = _prefix
         super
       end
 
@@ -116,8 +116,8 @@ module AbstractController
         name.underscore
       end
 
-      def _prefix
-        self.class.prefix
+      def _prefixes
+        [self.class.prefix]
       end
     end
 
@@ -157,10 +157,10 @@ module AbstractController
       private
       def self.layout(formats)
         begin
-          find_template(name.underscore, {:formats => formats}, :_prefix => "layouts")
+          find_template(name.underscore, {:formats => formats}, :_prefixes => ["layouts"])
         rescue ActionView::MissingTemplate
           begin
-            find_template("application", {:formats => formats}, :_prefix => "layouts")
+            find_template("application", {:formats => formats}, :_prefixes => ["layouts"])
           rescue ActionView::MissingTemplate
           end
         end
diff --git a/actionpack/test/abstract/callbacks_test.rb b/actionpack/test/abstract/callbacks_test.rb
index 232a1679e0..3bdde86291 100644
--- a/actionpack/test/abstract/callbacks_test.rb
+++ b/actionpack/test/abstract/callbacks_test.rb
@@ -2,27 +2,27 @@ require 'abstract_unit'
 
 module AbstractController
   module Testing
-  
+
     class ControllerWithCallbacks < AbstractController::Base
       include AbstractController::Callbacks
     end
-    
+
     class Callback1 < ControllerWithCallbacks
       set_callback :process_action, :before, :first
-      
+
       def first
         @text = "Hello world"
       end
-      
+
       def index
         self.response_body = @text
       end
     end
-    
+
     class TestCallbacks1 < ActiveSupport::TestCase
       test "basic callbacks work" do
         controller = Callback1.new
-        result = controller.process(:index)
+        controller.process(:index)
         assert_equal "Hello world", controller.response_body
       end
     end
@@ -31,22 +31,23 @@ module AbstractController
       before_filter :first
       after_filter :second
       around_filter :aroundz
-      
+
       def first
         @text = "Hello world"
       end
-      
+
       def second
         @second = "Goodbye"
       end
-      
+
       def aroundz
         @aroundz = "FIRST"
         yield
         @aroundz << "SECOND"
       end
-      
+
       def index
+        @text ||= nil
         self.response_body = @text.to_s
       end
     end
@@ -54,22 +55,22 @@ module AbstractController
     class Callback2Overwrite < Callback2
       before_filter :first, :except => :index
     end
-    
+
     class TestCallbacks2 < ActiveSupport::TestCase
       def setup
         @controller = Callback2.new
       end
 
       test "before_filter works" do
-        result = @controller.process(:index)
+        @controller.process(:index)
         assert_equal "Hello world", @controller.response_body
       end
-      
+
       test "after_filter works" do
         @controller.process(:index)
         assert_equal "Goodbye", @controller.instance_variable_get("@second")
       end
-      
+
       test "around_filter works" do
         @controller.process(:index)
         assert_equal "FIRSTSECOND", @controller.instance_variable_get("@aroundz")
@@ -77,20 +78,20 @@ module AbstractController
 
       test "before_filter with overwritten condition" do
         @controller = Callback2Overwrite.new
-        result = @controller.process(:index)
+        @controller.process(:index)
         assert_equal "", @controller.response_body
       end
     end
-    
+
     class Callback3 < ControllerWithCallbacks
       before_filter do |c|
         c.instance_variable_set("@text", "Hello world")
       end
-      
+
       after_filter do |c|
         c.instance_variable_set("@second", "Goodbye")
       end
-            
+
       def index
         self.response_body = @text
       end
@@ -100,41 +101,41 @@ module AbstractController
       def setup
         @controller = Callback3.new
       end
-      
+
       test "before_filter works with procs" do
-        result = @controller.process(:index)
+        @controller.process(:index)
         assert_equal "Hello world", @controller.response_body
       end
-      
+
       test "after_filter works with procs" do
-        result = @controller.process(:index)
+        @controller.process(:index)
         assert_equal "Goodbye", @controller.instance_variable_get("@second")
-      end      
+      end
     end
-    
+
     class CallbacksWithConditions < ControllerWithCallbacks
       before_filter :list, :only => :index
       before_filter :authenticate, :except => :index
-      
+
       def index
         self.response_body = @list.join(", ")
       end
-      
+
       def sekrit_data
         self.response_body = (@list + [@authenticated]).join(", ")
       end
-      
+
       private
       def list
         @list = ["Hello", "World"]
       end
-      
+
       def authenticate
         @list = []
         @authenticated = "true"
       end
     end
-    
+
     class TestCallbacksWithConditions < ActiveSupport::TestCase
       def setup
         @controller = CallbacksWithConditions.new
@@ -144,98 +145,99 @@ module AbstractController
         @controller.process(:index)
         assert_equal "Hello, World", @controller.response_body
       end
-      
+
       test "when :only is specified, a before filter is not triggered on other actions" do
         @controller.process(:sekrit_data)
         assert_equal "true", @controller.response_body
       end
-      
+
       test "when :except is specified, an after filter is not triggered on that action" do
-        result = @controller.process(:index)
-        assert_nil @controller.instance_variable_get("@authenticated")
+        @controller.process(:index)
+        assert !@controller.instance_variable_defined?("@authenticated")
       end
     end
-    
+
     class CallbacksWithArrayConditions < ControllerWithCallbacks
       before_filter :list, :only => [:index, :listy]
       before_filter :authenticate, :except => [:index, :listy]
-      
+
       def index
         self.response_body = @list.join(", ")
       end
-      
+
       def sekrit_data
         self.response_body = (@list + [@authenticated]).join(", ")
       end
-      
+
       private
       def list
         @list = ["Hello", "World"]
       end
-      
+
       def authenticate
         @list = []
         @authenticated = "true"
-      end      
+      end
     end
-    
+
     class TestCallbacksWithArrayConditions < ActiveSupport::TestCase
       def setup
         @controller = CallbacksWithArrayConditions.new
       end
 
       test "when :only is specified with an array, a before filter is triggered on that action" do
-        result = @controller.process(:index)
+        @controller.process(:index)
         assert_equal "Hello, World", @controller.response_body
       end
-      
+
       test "when :only is specified with an array, a before filter is not triggered on other actions" do
-        result = @controller.process(:sekrit_data)
+        @controller.process(:sekrit_data)
         assert_equal "true", @controller.response_body
       end
-      
+
       test "when :except is specified with an array, an after filter is not triggered on that action" do
-        result = @controller.process(:index)
-        assert_nil @controller.instance_variable_get("@authenticated")
+        @controller.process(:index)
+        assert !@controller.instance_variable_defined?("@authenticated")
       end
-    end    
-    
+    end
+
     class ChangedConditions < Callback2
       before_filter :first, :only => :index
-      
+
       def not_index
+        @text ||= nil
         self.response_body = @text.to_s
       end
     end
-    
+
     class TestCallbacksWithChangedConditions < ActiveSupport::TestCase
       def setup
         @controller = ChangedConditions.new
       end
-      
+
       test "when a callback is modified in a child with :only, it works for the :only action" do
-        result = @controller.process(:index)
+        @controller.process(:index)
         assert_equal "Hello world", @controller.response_body
       end
-      
+
       test "when a callback is modified in a child with :only, it does not work for other actions" do
-        result = @controller.process(:not_index)
+        @controller.process(:not_index)
         assert_equal "", @controller.response_body
       end
     end
-    
+
     class SetsResponseBody < ControllerWithCallbacks
       before_filter :set_body
-      
+
       def index
         self.response_body = "Fail"
       end
-      
+
       def set_body
         self.response_body = "Success"
       end
     end
-    
+
     class TestHalting < ActiveSupport::TestCase
       test "when a callback sets the response body, the action should not be invoked" do
         controller = SetsResponseBody.new
@@ -243,6 +245,27 @@ module AbstractController
         assert_equal "Success", controller.response_body
       end
     end
-    
+
+    class CallbacksWithArgs < ControllerWithCallbacks
+      set_callback :process_action, :before, :first
+
+      def first
+        @text = "Hello world"
+      end
+
+      def index(text)
+        self.response_body = @text + text
+      end
+    end
+
+    class TestCallbacksWithArgs < ActiveSupport::TestCase
+      test "callbacks still work when invoking process with multiple args" do
+        controller = CallbacksWithArgs.new
+        controller.process(:index, " Howdy!")
+        assert_equal "Hello world Howdy!", controller.response_body
+      end
+    end
+
+
   end
 end
diff --git a/actionpack/test/abstract/helper_test.rb b/actionpack/test/abstract/helper_test.rb
index 15c27501f2..b28a5b5afb 100644
--- a/actionpack/test/abstract/helper_test.rb
+++ b/actionpack/test/abstract/helper_test.rb
@@ -4,7 +4,7 @@ ActionController::Base.helpers_path = File.expand_path('../../fixtures/helpers',
 
 module AbstractController
   module Testing
-  
+
     class ControllerWithHelpers < AbstractController::Base
       include AbstractController::Rendering
       include Helpers
@@ -13,13 +13,13 @@ module AbstractController
         render :inline => "Module <%= included_method %>"
       end
     end
-   
+
     module HelperyTest
       def included_method
         "Included"
       end
     end
-   
+
     class AbstractHelpers < ControllerWithHelpers
       helper(HelperyTest) do
         def helpery_test
@@ -38,6 +38,10 @@ module AbstractController
       end
     end
 
+    class ::HelperyTestController < AbstractHelpers
+      clear_helpers
+    end
+
     class AbstractHelpersBlock < ControllerWithHelpers
       helper do
         include ::AbstractController::Testing::HelperyTest
@@ -45,7 +49,6 @@ module AbstractController
     end
 
     class TestHelpers < ActiveSupport::TestCase
-
       def setup
         @controller = AbstractHelpers.new
       end
@@ -74,8 +77,22 @@ module AbstractController
         @controller.process(:with_module)
         assert_equal "Module Included", @controller.response_body
       end
+    end
 
+    class ClearHelpersTest < ActiveSupport::TestCase
+      def setup
+        @controller = HelperyTestController.new
+      end
+
+      def test_clears_up_previous_helpers
+        @controller.process(:with_symbol)
+        assert_equal "I respond to bare_a: false", @controller.response_body
+      end
+
+      def test_includes_controller_default_helper
+        @controller.process(:with_block)
+        assert_equal "Hello Default", @controller.response_body
+      end
     end
-    
   end
 end
diff --git a/actionpack/test/abstract/layouts_test.rb b/actionpack/test/abstract/layouts_test.rb
index f580ad40f7..5ed6aa68b5 100644
--- a/actionpack/test/abstract/layouts_test.rb
+++ b/actionpack/test/abstract/layouts_test.rb
@@ -225,7 +225,7 @@ module AbstractControllerTests
       end
 
       test "when the layout is specified as a symbol and the method doesn't exist, raise an exception" do
-        assert_raises(NoMethodError) { WithSymbolAndNoMethod.new.process(:index) }
+        assert_raises(NameError) { WithSymbolAndNoMethod.new.process(:index) }
       end
 
       test "when the layout is specified as a symbol and the method returns something besides a string/false/nil, raise an exception" do
diff --git a/actionpack/test/abstract/render_test.rb b/actionpack/test/abstract/render_test.rb
index 25dc8bd804..b9293d1241 100644
--- a/actionpack/test/abstract/render_test.rb
+++ b/actionpack/test/abstract/render_test.rb
@@ -6,8 +6,8 @@ module AbstractController
     class ControllerRenderer < AbstractController::Base
       include AbstractController::Rendering
 
-      def _prefix
-        "renderer"
+      def _prefixes
+        %w[renderer]
       end
 
       self.view_paths = [ActionView::FixtureResolver.new(
diff --git a/actionpack/test/abstract/translation_test.rb b/actionpack/test/abstract/translation_test.rb
index 09ebfab85e..8ec50fd57a 100644
--- a/actionpack/test/abstract/translation_test.rb
+++ b/actionpack/test/abstract/translation_test.rb
@@ -7,19 +7,19 @@ class TranslationControllerTest < Test::Unit::TestCase
   def setup
     @controller = ActionController::Base.new
   end
-  
+
   def test_action_controller_base_responds_to_translate
     assert_respond_to @controller, :translate
   end
-  
+
   def test_action_controller_base_responds_to_t
     assert_respond_to @controller, :t
   end
-  
+
   def test_action_controller_base_responds_to_localize
     assert_respond_to @controller, :localize
   end
-  
+
   def test_action_controller_base_responds_to_l
     assert_respond_to @controller, :l
   end
diff --git a/actionpack/test/abstract_unit.rb b/actionpack/test/abstract_unit.rb
index 5be47f7c96..60534a9746 100644
--- a/actionpack/test/abstract_unit.rb
+++ b/actionpack/test/abstract_unit.rb
@@ -12,8 +12,16 @@ $:.unshift(File.dirname(__FILE__) + '/fixtures/alternate_helpers')
 
 ENV['TMPDIR'] = File.join(File.dirname(__FILE__), 'tmp')
 
-if defined?(Encoding.default_internal)
-  Encoding.default_internal = "UTF-8"
+require 'active_support/core_ext/kernel/reporting'
+
+require 'active_support/core_ext/string/encoding'
+if "ruby".encoding_aware?
+  # These are the normal settings that will be set up by Railties
+  # TODO: Have these tests support other combinations of these values
+  silence_warnings do
+    Encoding.default_internal = "UTF-8"
+    Encoding.default_external = "UTF-8"
+  end
 end
 
 require 'test/unit'
@@ -28,25 +36,14 @@ require 'active_record'
 require 'action_controller/caching'
 require 'action_controller/caching/sweeping'
 
-begin
-  require 'ruby-debug'
-  Debugger.settings[:autoeval] = true
-  Debugger.start
-rescue LoadError
-  # Debugging disabled. `gem install ruby-debug` to enable.
-end
-
 require 'pp' # require 'pp' early to prevent hidden_methods from not picking up the pretty-print methods until too late
 
 module Rails
-end
-
-# Monkey patch the old routes initialization to be silenced.
-class ActionDispatch::Routing::DeprecatedMapper
-  def initialize_with_silencer(*args)
-    ActiveSupport::Deprecation.silence { initialize_without_silencer(*args) }
+  class << self
+    def env
+      @_env ||= ActiveSupport::StringInquirer.new(ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "test")
+    end
   end
-  alias_method_chain :initialize, :silencer
 end
 
 ActiveSupport::Dependencies.hook!
@@ -120,14 +117,12 @@ module ActiveSupport
     # Hold off drawing routes until all the possible controller classes
     # have been loaded.
     setup_once do
-      SharedTestRoutes.draw do |map|
-        # FIXME: match ':controller(/:action(/:id))'
-        map.connect ':controller/:action/:id'
+      SharedTestRoutes.draw do
+        match ':controller(/:action)'
       end
 
-      ActionController::IntegrationTest.app.routes.draw do |map|
-        # FIXME: match ':controller(/:action(/:id))'
-        map.connect ':controller/:action/:id'
+      ActionDispatch::IntegrationTest.app.routes.draw do
+        match ':controller(/:action)'
       end
     end
   end
@@ -165,9 +160,7 @@ class ActionDispatch::IntegrationTest < ActiveSupport::TestCase
   setup do
     @routes = SharedTestRoutes
   end
-end
 
-class ActionController::IntegrationTest < ActiveSupport::TestCase
   def self.build_app(routes = nil)
     RoutedRackApp.new(routes || ActionDispatch::Routing::RouteSet.new) do |middleware|
       middleware.use "ActionDispatch::ShowExceptions"
@@ -218,7 +211,7 @@ class ActionController::IntegrationTest < ActiveSupport::TestCase
   end
 
   def with_autoload_path(path)
-    path = File.join(File.dirname(__FILE__), "fixtures", path)  
+    path = File.join(File.dirname(__FILE__), "fixtures", path)
     if ActiveSupport::Dependencies.autoload_paths.include?(path)
       yield
     else
@@ -234,7 +227,7 @@ class ActionController::IntegrationTest < ActiveSupport::TestCase
 end
 
 # Temporary base class
-class Rack::TestCase < ActionController::IntegrationTest
+class Rack::TestCase < ActionDispatch::IntegrationTest
   def self.testing(klass = nil)
     if klass
       @testing = "/#{klass.name.underscore}".sub!(/_controller$/, '')
@@ -276,11 +269,27 @@ class Rack::TestCase < ActionController::IntegrationTest
   end
 end
 
-class ActionController::Base
-  def self.test_routes(&block)
-    routes = ActionDispatch::Routing::RouteSet.new
-    routes.draw(&block)
-    include routes.url_helpers
+module ActionController
+  class Base
+    include ActionController::Testing
+    # This stub emulates the Railtie including the URL helpers from a Rails application
+    include SharedTestRoutes.url_helpers
+
+    self.view_paths = FIXTURE_LOAD_PATH
+
+    def self.test_routes(&block)
+      routes = ActionDispatch::Routing::RouteSet.new
+      routes.draw(&block)
+      include routes.url_helpers
+    end
+  end
+
+  class TestCase
+    include ActionDispatch::TestProcess
+
+    setup do
+      @routes = SharedTestRoutes
+    end
   end
 end
 
@@ -297,25 +306,37 @@ module ActionView
   end
 end
 
-module ActionController
-  class Base
-    include ActionController::Testing
-  end
+class Workshop
+  extend ActiveModel::Naming
+  include ActiveModel::Conversion
+  attr_accessor :id
 
-  Base.view_paths = FIXTURE_LOAD_PATH
+  def initialize(id)
+    @id = id
+  end
 
-  class TestCase
-    include ActionDispatch::TestProcess
+  def persisted?
+    id.present?
+  end
 
-    setup do
-      @routes = SharedTestRoutes
-    end
+  def to_s
+    id.to_s
   end
 end
 
-# This stub emulates the Railtie including the URL helpers from a Rails application
-module ActionController
-  class Base
-    include SharedTestRoutes.url_helpers
+module ActionDispatch
+  class ShowExceptions
+    private
+      remove_method :public_path
+      def public_path
+        "#{FIXTURE_LOAD_PATH}/public"
+      end
+
+      remove_method :logger
+      # Silence logger
+      def logger
+        nil
+      end
   end
 end
+
diff --git a/actionpack/test/action_dispatch/routing/mapper_test.rb b/actionpack/test/action_dispatch/routing/mapper_test.rb
new file mode 100644
index 0000000000..e21b271907
--- /dev/null
+++ b/actionpack/test/action_dispatch/routing/mapper_test.rb
@@ -0,0 +1,58 @@
+require 'abstract_unit'
+
+module ActionDispatch
+  module Routing
+    class MapperTest < ActiveSupport::TestCase
+      class FakeSet
+        attr_reader :routes
+
+        def initialize
+          @routes = []
+        end
+
+        def resources_path_names
+          {}
+        end
+
+        def request_class
+          ActionDispatch::Request
+        end
+
+        def add_route(*args)
+          routes << args
+        end
+
+        def conditions
+          routes.map { |x| x[1] }
+        end
+      end
+
+      def test_initialize
+        Mapper.new FakeSet.new
+      end
+
+      def test_map_slash
+        fakeset = FakeSet.new
+        mapper = Mapper.new fakeset
+        mapper.match '/', :to => 'posts#index', :as => :main
+        assert_equal '/', fakeset.conditions.first[:path_info]
+      end
+
+      def test_map_more_slashes
+        fakeset = FakeSet.new
+        mapper = Mapper.new fakeset
+
+        # FIXME: is this a desired behavior?
+        mapper.match '/one/two/', :to => 'posts#index', :as => :main
+        assert_equal '/one/two(.:format)', fakeset.conditions.first[:path_info]
+      end
+
+      def test_map_wildcard
+        fakeset = FakeSet.new
+        mapper = Mapper.new fakeset
+        mapper.match '/*path', :to => 'pages#show', :as => :page
+        assert_equal '/*path', fakeset.conditions.first[:path_info]
+      end
+    end
+  end
+end
diff --git a/actionpack/test/activerecord/active_record_store_test.rb b/actionpack/test/activerecord/active_record_store_test.rb
index bdd1a0a15c..f0fb113860 100644
--- a/actionpack/test/activerecord/active_record_store_test.rb
+++ b/actionpack/test/activerecord/active_record_store_test.rb
@@ -1,6 +1,6 @@
 require 'active_record_unit'
 
-class ActiveRecordStoreTest < ActionController::IntegrationTest
+class ActiveRecordStoreTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     def no_session_access
       head :ok
@@ -23,6 +23,13 @@ class ActiveRecordStoreTest < ActionController::IntegrationTest
     def call_reset_session
       session[:foo]
       reset_session
+      reset_session if params[:twice]
+      session[:foo] = "baz"
+      head :ok
+    end
+
+    def renew
+      env["rack.session.options"][:renew] = true
       session[:foo] = "baz"
       head :ok
     end
@@ -64,6 +71,20 @@ class ActiveRecordStoreTest < ActionController::IntegrationTest
         end
       end
     end
+
+    define_method("test_renewing_with_#{class_name}_store") do
+      with_store class_name do
+        with_test_route_set do
+          get '/set_session_value'
+          assert_response :success
+          assert cookies['_session_id']
+
+          get '/renew'
+          assert_response :success
+          assert_not_equal [], headers['Set-Cookie']
+        end
+      end
+    end
   end
 
   def test_getting_nil_session_value
@@ -74,6 +95,17 @@ class ActiveRecordStoreTest < ActionController::IntegrationTest
     end
   end
 
+  def test_calling_reset_session_twice_does_not_raise_errors
+    with_test_route_set do
+      get '/call_reset_session', :twice => "true"
+      assert_response :success
+
+      get '/get_session_value'
+      assert_response :success
+      assert_equal 'foo: "baz"', response.body
+    end
+  end
+
   def test_setting_session_value_after_session_reset
     with_test_route_set do
       get '/set_session_value'
@@ -198,7 +230,7 @@ class ActiveRecordStoreTest < ActionController::IntegrationTest
 
     def with_test_route_set(options = {})
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => 'active_record_store_test/test'
         end
 
diff --git a/actionpack/test/activerecord/controller_runtime_test.rb b/actionpack/test/activerecord/controller_runtime_test.rb
index cfd86d704d..7931da3741 100644
--- a/actionpack/test/activerecord/controller_runtime_test.rb
+++ b/actionpack/test/activerecord/controller_runtime_test.rb
@@ -37,6 +37,6 @@ class ControllerRuntimeLogSubscriberTest < ActionController::TestCase
     wait
 
     assert_equal 2, @logger.logged(:info).size
-    assert_match /\(Views: [\d\.]+ms | ActiveRecord: [\d\.]+ms\)/, @logger.logged(:info)[1]
+    assert_match(/\(Views: [\d.]+ms | ActiveRecord: [\d.]+ms\)/, @logger.logged(:info)[1])
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/test/activerecord/polymorphic_routes_test.rb b/actionpack/test/activerecord/polymorphic_routes_test.rb
index 90a1ef982c..f9e47d5118 100644
--- a/actionpack/test/activerecord/polymorphic_routes_test.rb
+++ b/actionpack/test/activerecord/polymorphic_routes_test.rb
@@ -25,6 +25,22 @@ class Series < ActiveRecord::Base
   set_table_name 'projects'
 end
 
+module Blog
+  class Post < ActiveRecord::Base
+    set_table_name 'projects'
+  end
+
+  class Blog < ActiveRecord::Base
+    set_table_name 'projects'
+  end
+
+  def self._railtie
+    o = Object.new
+    def o.railtie_name; "blog" end
+    o
+  end
+end
+
 class PolymorphicRoutesTest < ActionController::TestCase
   include SharedTestRoutes.url_helpers
   self.default_url_options[:host] = 'example.com'
@@ -37,6 +53,38 @@ class PolymorphicRoutesTest < ActionController::TestCase
     @tax = Tax.new
     @fax = Fax.new
     @series = Series.new
+    @blog_post = Blog::Post.new
+    @blog_blog = Blog::Blog.new
+  end
+
+  def test_passing_routes_proxy
+    with_namespaced_routes(:blog) do
+      proxy = ActionDispatch::Routing::RoutesProxy.new(_routes, self)
+      @blog_post.save
+      assert_equal "http://example.com/posts/#{@blog_post.id}", polymorphic_url([proxy, @blog_post])
+    end
+  end
+
+  def test_namespaced_model
+    with_namespaced_routes(:blog) do
+      @blog_post.save
+      assert_equal "http://example.com/posts/#{@blog_post.id}", polymorphic_url(@blog_post)
+    end
+  end
+
+  def test_namespaced_model_with_name_the_same_as_namespace
+    with_namespaced_routes(:blog) do
+      @blog_blog.save
+      assert_equal "http://example.com/blogs/#{@blog_blog.id}", polymorphic_url(@blog_blog)
+    end
+  end
+
+  def test_namespaced_model_with_nested_resources
+    with_namespaced_routes(:blog) do
+      @blog_post.save
+      @blog_blog.save
+      assert_equal "http://example.com/blogs/#{@blog_blog.id}/posts/#{@blog_post.id}", polymorphic_url([@blog_blog, @blog_post])
+    end
   end
 
   def test_with_record
@@ -385,20 +433,36 @@ class PolymorphicRoutesTest < ActionController::TestCase
     end
   end
 
+  def with_namespaced_routes(name)
+    with_routing do |set|
+      set.draw do
+        scope(:module => name) do
+          resources :blogs do
+            resources :posts
+          end
+          resources :posts
+        end
+      end
+
+      self.class.send(:include, @routes.url_helpers)
+      yield
+    end
+  end
+
   def with_test_routes(options = {})
     with_routing do |set|
-      set.draw do |map|
-        map.resources :projects do |projects|
-          projects.resources :tasks
-          projects.resource :bid do |bid|
-            bid.resources :tasks
+      set.draw do
+        resources :projects do
+          resources :tasks
+          resource :bid do
+            resources :tasks
           end
         end
-        map.resources :taxes do |taxes|
-          taxes.resources :faxes
-          taxes.resource :bid
+        resources :taxes do
+          resources :faxes
+          resource :bid
         end
-        map.resources :series
+        resources :series
       end
 
       self.class.send(:include, @routes.url_helpers)
diff --git a/actionpack/test/activerecord/render_partial_with_record_identification_test.rb b/actionpack/test/activerecord/render_partial_with_record_identification_test.rb
index df50c3dc6f..99f09286ff 100644
--- a/actionpack/test/activerecord/render_partial_with_record_identification_test.rb
+++ b/actionpack/test/activerecord/render_partial_with_record_identification_test.rb
@@ -11,7 +11,7 @@ class RenderPartialWithRecordIdentificationController < ActionController::Base
     render :partial => @topic.replies
   end
 
-  def render_with_named_scope
+  def render_with_scope
     render :partial => Reply.base
   end
 
@@ -62,8 +62,8 @@ class RenderPartialWithRecordIdentificationTest < ActiveRecordTestCase
     assert_equal 'Birdman is better!', @response.body
   end
 
-  def test_rendering_partial_with_named_scope
-    get :render_with_named_scope
+  def test_rendering_partial_with_scope
+    get :render_with_scope
     assert_template 'replies/_reply'
     assert_equal 'Birdman is better!Nuh uh!', @response.body
   end
@@ -93,38 +93,6 @@ class RenderPartialWithRecordIdentificationTest < ActiveRecordTestCase
   end
 end
 
-class RenderPartialWithRecordIdentificationController < ActionController::Base
-  def render_with_has_many_and_belongs_to_association
-    @developer = Developer.find(1)
-    render :partial => @developer.projects
-  end
-
-  def render_with_has_many_association
-    @topic = Topic.find(1)
-    render :partial => @topic.replies
-  end
-
-  def render_with_has_many_through_association
-    @developer = Developer.find(:first)
-    render :partial => @developer.topics
-  end
-
-  def render_with_belongs_to_association
-    @reply = Reply.find(1)
-    render :partial => @reply.topic
-  end
-
-  def render_with_record
-    @developer = Developer.find(:first)
-    render :partial => @developer
-  end
-
-  def render_with_record_collection
-    @developers = Developer.find(:all)
-    render :partial => @developers
-  end
-end
-
 class Game < Struct.new(:name, :id)
   extend ActiveModel::Naming
   include ActiveModel::Conversion
diff --git a/actionpack/test/controller/action_pack_assertions_test.rb b/actionpack/test/controller/action_pack_assertions_test.rb
index 53cdd358b4..7f3d943bba 100644
--- a/actionpack/test/controller/action_pack_assertions_test.rb
+++ b/actionpack/test/controller/action_pack_assertions_test.rb
@@ -2,34 +2,26 @@ require 'abstract_unit'
 require 'action_controller/vendor/html-scanner'
 require 'controller/fake_controllers'
 
-# a controller class to facilitate the tests
 class ActionPackAssertionsController < ActionController::Base
 
-  # this does absolutely nothing
   def nothing() head :ok end
 
-  # a standard template
   def hello_world() render :template => "test/hello_world"; end
 
-  # a standard template
   def hello_xml_world() render :template => "test/hello_xml_world"; end
 
-  # a standard template rendering PDF
   def hello_xml_world_pdf
     self.content_type = "application/pdf"
     render :template => "test/hello_xml_world"
   end
 
-  # a standard template rendering PDF
   def hello_xml_world_pdf_header
     response.headers["Content-Type"] = "application/pdf; charset=utf-8"
     render :template => "test/hello_xml_world"
   end
 
-  # a standard partial
   def partial() render :partial => 'test/partial'; end
 
-  # a redirect to an internal location
   def redirect_internal() redirect_to "/nothing"; end
 
   def redirect_to_action() redirect_to :action => "flash_me", :id => 1, :params => { "panda" => "fun" }; end
@@ -40,33 +32,28 @@ class ActionPackAssertionsController < ActionController::Base
 
   def redirect_to_path() redirect_to '/some/path' end
 
+  def redirect_invalid_external_route() redirect_to 'ht_tp://www.rubyonrails.org' end
+
   def redirect_to_named_route() redirect_to route_one_url end
 
-  # a redirect to an external location
   def redirect_external() redirect_to "http://www.rubyonrails.org"; end
 
-  # a 404
   def response404() head '404 AWOL' end
 
-  # a 500
   def response500() head '500 Sorry' end
 
-  # a fictional 599
   def response599() head '599 Whoah!' end
 
-  # putting stuff in the flash
   def flash_me
     flash['hello'] = 'my name is inigo montoya...'
     render :text => "Inconceivable!"
   end
 
-  # we have a flash, but nothing is in it
   def flash_me_naked
     flash.clear
     render :text => "wow!"
   end
 
-  # assign some template instance variables
   def assign_this
     @howdy = "ho"
     render :inline => "Mr. Henke"
@@ -84,61 +71,20 @@ class ActionPackAssertionsController < ActionController::Base
     render :text => "Hello!", :content_type => Mime::RSS
   end
 
-  # puts something in the session
   def session_stuffing
     session['xmas'] = 'turkey'
     render :text => "ho ho ho"
   end
 
-  # raises exception on get requests
-  def raise_on_get
+  def raise_exception_on_get
     raise "get" if request.get?
     render :text => "request method: #{request.env['REQUEST_METHOD']}"
   end
 
-  # raises exception on post requests
-  def raise_on_post
+  def raise_exception_on_post
     raise "post" if request.post?
     render :text => "request method: #{request.env['REQUEST_METHOD']}"
   end
-
-  def get_valid_record
-    @record = Class.new do
-      def valid?
-        true
-      end
-
-      def errors
-        Class.new do
-           def full_messages; []; end
-        end.new
-      end
-
-    end.new
-
-    render :nothing => true
-  end
-
-
-  def get_invalid_record
-    @record = Class.new do
-
-      def valid?
-        false
-      end
-
-      def errors
-        Class.new do
-           def full_messages; ['...stuff...']; end
-        end.new
-      end
-    end.new
-
-    render :nothing => true
-  end
-
-  # 911
-  def rescue_action(e) raise; end
 end
 
 # Used to test that assert_response includes the exception message
@@ -181,48 +127,39 @@ module Admin
   end
 end
 
-# require "action_dispatch/test_process"
-
-# a test case to exercise the new capabilities TestRequest & TestResponse
 class ActionPackAssertionsControllerTest < ActionController::TestCase
-  # -- assertion-based testing ------------------------------------------------
 
   def test_assert_tag_and_url_for
     get :render_url
     assert_tag :content => "/action_pack_assertions/flash_me"
   end
 
-  # test the get method, make sure the request really was a get
-  def test_get
-    assert_raise(RuntimeError) { get :raise_on_get }
-    get :raise_on_post
+  def test_get_request
+    assert_raise(RuntimeError) { get :raise_exception_on_get }
+    get :raise_exception_on_post
     assert_equal @response.body, 'request method: GET'
   end
 
-  # test the get method, make sure the request really was a get
-  def test_post
-    assert_raise(RuntimeError) { post :raise_on_post }
-    post :raise_on_get
+  def test_post_request
+    assert_raise(RuntimeError) { post :raise_exception_on_post }
+    post :raise_exception_on_get
+    assert_equal @response.body, 'request method: POST'
+  end
+
+  def test_get_post_request_switch
+    post :raise_exception_on_get
+    assert_equal @response.body, 'request method: POST'
+    get :raise_exception_on_post
+    assert_equal @response.body, 'request method: GET'
+    post :raise_exception_on_get
     assert_equal @response.body, 'request method: POST'
+    get :raise_exception_on_post
+    assert_equal @response.body, 'request method: GET'
   end
 
-#   the following test fails because the request_method is now cached on the request instance
-#   test the get/post switch within one test action
-#   def test_get_post_switch
-#     post :raise_on_get
-#     assert_equal @response.body, 'request method: POST'
-#     get :raise_on_post
-#     assert_equal @response.body, 'request method: GET'
-#     post :raise_on_get
-#     assert_equal @response.body, 'request method: POST'
-#     get :raise_on_post
-#     assert_equal @response.body, 'request method: GET'
-#   end
-
-  # test the redirection to a named route
-  def test_assert_redirect_to_named_route
+  def test_redirect_to_named_route
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         match 'route_one', :to => 'action_pack_assertions#nothing', :as => :route_one
         match ':controller/:action'
       end
@@ -234,9 +171,17 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     end
   end
 
+  def test_string_constraint
+    with_routing do |set|
+      set.draw do
+        match "photos", :to => 'action_pack_assertions#nothing', :constraints => {:subdomain => "admin"}
+      end
+    end
+  end
+
   def test_assert_redirect_to_named_route_failure
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         match 'route_one', :to => 'action_pack_assertions#nothing', :as => :route_one
         match 'route_two', :to => 'action_pack_assertions#nothing', :id => 'two', :as => :route_two
         match ':controller/:action'
@@ -258,10 +203,9 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     @controller = Admin::InnerModuleController.new
 
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         match 'admin/inner_module', :to => 'admin/inner_module#index', :as => :admin_inner_module
-        # match ':controller/:action'
-        map.connect ':controller/:action/:id'
+        match ':controller/:action'
       end
       process :redirect_to_index
       # redirection is <{"action"=>"index", "controller"=>"admin/admin/inner_module"}>
@@ -273,10 +217,9 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     @controller = Admin::InnerModuleController.new
 
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         match '/action_pack_assertions/:id', :to => 'action_pack_assertions#index', :as => :top_level
-        # match ':controller/:action'
-        map.connect ':controller/:action/:id'
+        match ':controller/:action'
       end
       process :redirect_to_top_level_named_route
       # assert_redirected_to "http://test.host/action_pack_assertions/foo" would pass because of exact match early return
@@ -288,11 +231,10 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     @controller = Admin::InnerModuleController.new
 
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         # this controller exists in the admin namespace as well which is the only difference from previous test
         match '/user/:id', :to => 'user#index', :as => :top_level
-        # match ':controller/:action'
-        map.connect ':controller/:action/:id'
+        match ':controller/:action'
       end
       process :redirect_to_top_level_named_route
       # assert_redirected_to top_level_url('foo') would pass because of exact match early return
@@ -300,53 +242,44 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     end
   end
 
-  # -- standard request/response object testing --------------------------------
-
-  # make sure that the template objects exist
-  def test_template_objects_alive
+  def test_template_objects_exist
     process :assign_this
-    assert !@controller.instance_variable_get(:"@hi")
+    assert !@controller.instance_variable_defined?(:"@hi")
     assert @controller.instance_variable_get(:"@howdy")
   end
 
-  # make sure we don't have template objects when we shouldn't
-  def test_template_object_missing
+  def test_template_objects_missing
     process :nothing
-    assert_nil @controller.instance_variable_get(:@howdy)
+    assert !@controller.instance_variable_defined?(:@howdy)
   end
 
-  # check the empty flashing
-  def test_flash_me_naked
+  def test_empty_flash
     process :flash_me_naked
-    assert_deprecated do
-      assert !@response.has_flash?
-      assert !@response.has_flash_with_contents?
-    end
+    assert flash.empty?
   end
 
-  # check if we have flash objects
-  def test_flash_haves
+  def test_flash_exist
     process :flash_me
-    assert_deprecated do
-      assert @response.has_flash?
-      assert @response.has_flash_with_contents?
-      assert @response.has_flash_object?('hello')
-    end
+    assert flash.any?
+    assert_present flash['hello']
   end
 
-  # ensure we don't have flash objects
-  def test_flash_have_nots
+  def test_flash_does_not_exist
     process :nothing
-    assert_deprecated do
-      assert !@response.has_flash?
-      assert !@response.has_flash_with_contents?
-      assert_nil @response.flash['hello']
-    end
+    assert flash.empty?
   end
 
+  def test_session_exist
+    process :session_stuffing
+    assert_equal session['xmas'], 'turkey'
+  end
 
-  # check if we were rendered by a file-based template?
-  def test_rendered_action
+  def session_does_not_exist
+    process :nothing
+    assert session.empty?
+  end
+
+  def test_render_template_action
     process :nothing
     assert_template nil
 
@@ -354,7 +287,6 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     assert_template 'hello_world'
   end
 
-  # check the redirection location
   def test_redirection_location
     process :redirect_internal
     assert_equal 'http://test.host/nothing', @response.redirect_url
@@ -368,7 +300,6 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     assert_nil @response.redirect_url
   end
 
-  # check server errors
   def test_server_error_response_code
     process :response500
     assert @response.server_error?
@@ -380,31 +311,23 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     assert !@response.server_error?
   end
 
-  # check a 404 response code
   def test_missing_response_code
     process :response404
     assert @response.missing?
   end
 
-  # check client errors
   def test_client_error_response_code
     process :response404
     assert @response.client_error?
   end
 
-  # check to see if our redirection matches a pattern
   def test_redirect_url_match
     process :redirect_external
     assert @response.redirect?
-    assert_deprecated do
-      assert @response.redirect_url_match?("rubyonrails")
-      assert @response.redirect_url_match?(/rubyonrails/)
-      assert !@response.redirect_url_match?("phpoffrails")
-      assert !@response.redirect_url_match?(/perloffrails/)
-    end
+    assert_match(/rubyonrails/, @response.redirect_url)
+    assert !/perloffrails/.match(@response.redirect_url)
   end
 
-  # check for a redirection
   def test_redirection
     process :redirect_internal
     assert @response.redirect?
@@ -416,14 +339,12 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     assert !@response.redirect?
   end
 
-  # check a successful response code
   def test_successful_response_code
     process :nothing
     assert @response.success?
   end
 
-  # a basic check to make sure we have a TestResponse object
-  def test_has_response
+  def test_response_object
     process :nothing
     assert_kind_of ActionController::TestResponse, @response
   end
@@ -457,6 +378,11 @@ class ActionPackAssertionsControllerTest < ActionController::TestCase
     end
   end
 
+  def test_redirect_invalid_external_route
+    process :redirect_invalid_external_route
+    assert_redirected_to "http://test.hostht_tp://www.rubyonrails.org"
+  end
+
   def test_redirected_to_url_full_url
     process :redirect_to_path
     assert_redirected_to 'http://test.host/some/path'
@@ -547,6 +473,14 @@ class AssertTemplateTest < ActionController::TestCase
       assert_template :hello_planet
     end
   end
+
+  def test_assert_template_reset_between_requests
+    get :hello_world
+    assert_template 'test/hello_world'
+
+    get :nothing
+    assert_template nil
+  end
 end
 
 class ActionPackHeaderTest < ActionController::TestCase
diff --git a/actionpack/test/controller/assert_select_test.rb b/actionpack/test/controller/assert_select_test.rb
index 4f8ad23174..f63321c78b 100644
--- a/actionpack/test/controller/assert_select_test.rb
+++ b/actionpack/test/controller/assert_select_test.rb
@@ -15,10 +15,8 @@ class AssertSelectTest < ActionController::TestCase
 
   class AssertSelectMailer < ActionMailer::Base
     def test(html)
-      recipients "test <test@test.host>"
-      from "test@test.host"
-      subject "Test e-mail"
-      part :content_type=>"text/html", :body=>html
+      mail :body => html, :content_type => "text/html",
+        :subject => "Test e-mail", :from => "test@test.host", :to => "test <test@test.host>"
     end
   end
 
@@ -257,7 +255,7 @@ class AssertSelectTest < ActionController::TestCase
     end
     assert_raise(Assertion) {assert_select_rjs :insert, :top, "test2"}
   end
-  
+
   def test_assert_select_rjs_for_redirect_to
     render_rjs do |page|
       page.redirect_to '/'
@@ -461,8 +459,8 @@ class AssertSelectTest < ActionController::TestCase
 
     assert_select_rjs :remove, "test1"
 
-  rescue Assertion
-    assert_equal "No RJS statement that removes 'test1' was rendered.", $!.message
+  rescue Assertion => e
+    assert_equal "No RJS statement that removes 'test1' was rendered.", e.message
   end
 
   def test_assert_select_rjs_for_remove_ignores_block
@@ -493,8 +491,8 @@ class AssertSelectTest < ActionController::TestCase
 
     assert_select_rjs :show, "test1"
 
-  rescue Assertion
-    assert_equal "No RJS statement that shows 'test1' was rendered.", $!.message
+  rescue Assertion => e
+    assert_equal "No RJS statement that shows 'test1' was rendered.", e.message
   end
 
   def test_assert_select_rjs_for_show_ignores_block
@@ -525,8 +523,8 @@ class AssertSelectTest < ActionController::TestCase
 
     assert_select_rjs :hide, "test1"
 
-  rescue Assertion
-    assert_equal "No RJS statement that hides 'test1' was rendered.", $!.message
+  rescue Assertion => e
+    assert_equal "No RJS statement that hides 'test1' was rendered.", e.message
   end
 
   def test_assert_select_rjs_for_hide_ignores_block
@@ -557,8 +555,8 @@ class AssertSelectTest < ActionController::TestCase
 
     assert_select_rjs :toggle, "test1"
 
-  rescue Assertion
-    assert_equal "No RJS statement that toggles 'test1' was rendered.", $!.message
+  rescue Assertion => e
+    assert_equal "No RJS statement that toggles 'test1' was rendered.", e.message
   end
 
   def test_assert_select_rjs_for_toggle_ignores_block
@@ -731,7 +729,7 @@ EOF
     end
 
     def render_rjs(&block)
-      @controller.response_with &block
+      @controller.response_with(&block)
       get :rjs
     end
 
diff --git a/actionpack/test/controller/base_test.rb b/actionpack/test/controller/base_test.rb
index ae270b751e..9c22a4e7e0 100644
--- a/actionpack/test/controller/base_test.rb
+++ b/actionpack/test/controller/base_test.rb
@@ -87,7 +87,7 @@ class RecordIdentifierController < ActionController::Base
 end
 
 class ControllerClassTests < ActiveSupport::TestCase
-  
+
   def test_controller_path
     assert_equal 'empty', EmptyController.controller_path
     assert_equal EmptyController.controller_path, EmptyController.new.controller_path
@@ -99,20 +99,6 @@ class ControllerClassTests < ActiveSupport::TestCase
     assert_equal 'empty', EmptyController.controller_name
     assert_equal 'contained_empty', Submodule::ContainedEmptyController.controller_name
   end
- 
-  def test_filter_parameter_logging
-    parameters = []
-    config = mock(:config => mock(:filter_parameters => parameters))
-    Rails.expects(:application).returns(config)
-
-    assert_deprecated do
-      Class.new(ActionController::Base) do
-        filter_parameter_logging :password
-      end
-    end
-
-    assert_equal [:password], parameters
-  end
 
   def test_record_identifier
     assert_respond_to RecordIdentifierController.new, :dom_id
@@ -164,15 +150,15 @@ class PerformActionTest < ActionController::TestCase
 
     rescue_action_in_public!
   end
-  
+
   def test_process_should_be_precise
     use_controller EmptyController
     exception = assert_raise AbstractController::ActionNotFound do
       get :non_existent
     end
-    assert_equal exception.message, "The action 'non_existent' could not be found for EmptyController" 
+    assert_equal exception.message, "The action 'non_existent' could not be found for EmptyController"
   end
-  
+
   def test_get_on_priv_should_show_selector
     use_controller MethodMissingController
     get :shouldnt_be_called
@@ -224,7 +210,7 @@ class UrlOptionsTest < ActionController::TestCase
       assert_equal 'http://www.override.com/from_view?locale=en', @controller.send(:from_view_url)
       assert_equal 'http://www.override.com/default_url_options/new?locale=en', @controller.url_for(:controller => 'default_url_options')
     end
-  end 
+  end
 
   def test_url_helpers_does_not_become_actions
     with_routing do |set|
@@ -308,7 +294,7 @@ class EmptyUrlOptionsTest < ActionController::TestCase
     @controller.request = @request
 
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         resources :things
       end
 
diff --git a/actionpack/test/controller/caching_test.rb b/actionpack/test/controller/caching_test.rb
index c161bea945..01f3e8f2b6 100644
--- a/actionpack/test/controller/caching_test.rb
+++ b/actionpack/test/controller/caching_test.rb
@@ -16,6 +16,7 @@ end
 class PageCachingTestController < CachingController
   caches_page :ok, :no_content, :if => Proc.new { |c| !c.request.format.json? }
   caches_page :found, :not_found
+  caches_page :about_me
 
 
   def ok
@@ -47,6 +48,14 @@ class PageCachingTestController < CachingController
   def trailing_slash
     render :text => "Sneak attack"
   end
+
+  def about_me
+    respond_to do |format|
+      format.html {render :text => 'I am html'}
+      format.xml {render :text => 'I am xml'}
+    end
+  end
+
 end
 
 class PageCachingTest < ActionController::TestCase
@@ -76,7 +85,7 @@ class PageCachingTest < ActionController::TestCase
 
   def test_page_caching_resources_saves_to_correct_path_with_extension_even_if_default_route
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         match 'posts.:format', :to => 'posts#index', :as => :formatted_posts
         match '/', :to => 'posts#index', :as => :main
       end
@@ -111,6 +120,13 @@ class PageCachingTest < ActionController::TestCase
     assert File.exist?("#{FILE_STORE_PATH}/page_caching_test/trailing_slash.html")
   end
 
+  def test_should_obey_http_accept_attribute
+    @request.env['HTTP_ACCEPT'] = 'text/xml'
+    get :about_me
+    assert File.exist?("#{FILE_STORE_PATH}/page_caching_test/about_me.xml")
+    assert_equal 'I am xml', @response.body
+  end
+
   def test_should_cache_with_trailing_slash_on_url
     @controller.class.cache_page 'cached content', '/page_caching_test/trailing_slash/'
     assert File.exist?("#{FILE_STORE_PATH}/page_caching_test/trailing_slash.html")
@@ -140,6 +156,17 @@ class PageCachingTest < ActionController::TestCase
     assert_page_not_cached :ok
   end
 
+  def test_page_caching_directory_set_as_pathname
+    begin
+      ActionController::Base.page_cache_directory = Pathname.new(FILE_STORE_PATH)
+      get :ok
+      assert_response :ok
+      assert_page_cached :ok
+    ensure
+      ActionController::Base.page_cache_directory = FILE_STORE_PATH
+    end
+  end
+
   private
     def assert_page_cached(action, message = "#{action} should have been cached")
       assert page_cached?(action), message
@@ -185,6 +212,7 @@ class ActionCachingTestController < CachingController
 
   def with_layout
     @cache_this = MockTime.now.to_f.to_s
+    @title = nil
     render :text => @cache_this, :layout => true
   end
 
@@ -240,7 +268,6 @@ class ActionCachingMockController
   end
 
   def request
-    mocked_path = @mock_path
     Object.new.instance_eval(<<-EVAL)
       def path; '#{@mock_path}' end
       def format; 'all' end
@@ -399,7 +426,6 @@ class ActionCacheTest < ActionController::TestCase
 
     get :index
     assert_response :success
-    new_cached_time = content_to_cache
     assert_not_equal cached_time, @response.body
   end
 
@@ -452,7 +478,7 @@ class ActionCacheTest < ActionController::TestCase
 
   def test_xml_version_of_resource_is_treated_as_different_cache
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         match ':controller(/:action(.:format))'
       end
 
@@ -533,6 +559,11 @@ class ActionCacheTest < ActionController::TestCase
     assert_response 404
   end
 
+  def test_four_oh_four_renders_content
+    get :four_oh_four
+    assert_equal "404'd!", @response.body
+  end
+
   def test_simple_runtime_error_returns_500_for_multiple_requests
     get :simple_runtime_error
     assert_response 500
@@ -637,7 +668,7 @@ class FragmentCachingTest < ActionController::TestCase
     @store.write('views/another_name', 'another_value')
     @store.write('views/primalgrasp', 'will not expire ;-)')
 
-    @controller.expire_fragment /name/
+    @controller.expire_fragment(/name/)
 
     assert_nil @store.read('views/name')
     assert_nil @store.read('views/another_name')
@@ -727,23 +758,23 @@ CACHED
   def test_fragment_caching_in_partials
     get :html_fragment_cached_with_partial
     assert_response :success
-    assert_match /Old fragment caching in a partial/, @response.body
-    assert_match "Old fragment caching in a partial", @store.read('views/test.host/functional_caching/html_fragment_cached_with_partial')
+    assert_match(/Old fragment caching in a partial/, @response.body)
+    assert_match("Old fragment caching in a partial", @store.read('views/test.host/functional_caching/html_fragment_cached_with_partial'))
   end
 
   def test_render_inline_before_fragment_caching
     get :inline_fragment_cached
     assert_response :success
-    assert_match /Some inline content/, @response.body
-    assert_match /Some cached content/, @response.body
-    assert_match "Some cached content", @store.read('views/test.host/functional_caching/inline_fragment_cached')
+    assert_match(/Some inline content/, @response.body)
+    assert_match(/Some cached content/, @response.body)
+    assert_match("Some cached content", @store.read('views/test.host/functional_caching/inline_fragment_cached'))
   end
 
   def test_fragment_caching_in_rjs_partials
     xhr :get, :js_fragment_cached_with_partial
     assert_response :success
-    assert_match /Old fragment caching in a partial/, @response.body
-    assert_match "Old fragment caching in a partial", @store.read('views/test.host/functional_caching/js_fragment_cached_with_partial')
+    assert_match(/Old fragment caching in a partial/, @response.body)
+    assert_match("Old fragment caching in a partial", @store.read('views/test.host/functional_caching/js_fragment_cached_with_partial'))
   end
 
   def test_html_formatted_fragment_caching
diff --git a/actionpack/test/controller/capture_test.rb b/actionpack/test/controller/capture_test.rb
index 47253f22b8..d78acb8ce8 100644
--- a/actionpack/test/controller/capture_test.rb
+++ b/actionpack/test/controller/capture_test.rb
@@ -6,21 +6,29 @@ class CaptureController < ActionController::Base
   def self.controller_path; "test"; end
 
   def content_for
+    @title = nil
     render :layout => "talk_from_action"
   end
 
   def content_for_with_parameter
+    @title = nil
     render :layout => "talk_from_action"
   end
 
   def content_for_concatenated
+    @title = nil
     render :layout => "talk_from_action"
   end
 
   def non_erb_block_content_for
+    @title = nil
     render :layout => "talk_from_action"
   end
 
+  def proper_block_detection
+    @todo = "some todo"
+  end
+
   def rescue_action(e) raise end
 end
 
@@ -62,8 +70,8 @@ class CaptureTest < ActionController::TestCase
   end
 
   def test_proper_block_detection
-    @todo = "some todo"
     get :proper_block_detection
+    assert_equal "some todo", @response.body
   end
 
   private
diff --git a/actionpack/test/controller/content_type_test.rb b/actionpack/test/controller/content_type_test.rb
index 967107853b..9500c25a32 100644
--- a/actionpack/test/controller/content_type_test.rb
+++ b/actionpack/test/controller/content_type_test.rb
@@ -29,18 +29,18 @@ class OldContentTypeController < ActionController::Base
     render :text => "hello world!"
   end
 
-  def render_default_for_rhtml
+  def render_default_for_erb
   end
 
-  def render_default_for_rxml
+  def render_default_for_builder
   end
 
   def render_default_for_rjs
   end
 
-  def render_change_for_rxml
+  def render_change_for_builder
     response.content_type = Mime::HTML
-    render :action => "render_default_for_rxml"
+    render :action => "render_default_for_builder"
   end
 
   def render_default_content_types_for_respond_to
@@ -108,23 +108,23 @@ class ContentTypeTest < ActionController::TestCase
     assert_equal "utf-8", @response.charset, @response.headers.inspect
   end
 
-  def test_nil_default_for_rhtml
+  def test_nil_default_for_erb
     OldContentTypeController.default_charset = nil
-    get :render_default_for_rhtml
+    get :render_default_for_erb
     assert_equal Mime::HTML, @response.content_type
     assert_nil @response.charset, @response.headers.inspect
   ensure
     OldContentTypeController.default_charset = "utf-8"
   end
 
-  def test_default_for_rhtml
-    get :render_default_for_rhtml
+  def test_default_for_erb
+    get :render_default_for_erb
     assert_equal Mime::HTML, @response.content_type
     assert_equal "utf-8", @response.charset
   end
 
-  def test_default_for_rxml
-    get :render_default_for_rxml
+  def test_default_for_builder
+    get :render_default_for_builder
     assert_equal Mime::XML, @response.content_type
     assert_equal "utf-8", @response.charset
   end
@@ -135,8 +135,8 @@ class ContentTypeTest < ActionController::TestCase
     assert_equal "utf-8", @response.charset
   end
 
-  def test_change_for_rxml
-    get :render_change_for_rxml
+  def test_change_for_builder
+    get :render_change_for_builder
     assert_equal Mime::HTML, @response.content_type
     assert_equal "utf-8", @response.charset
   end
diff --git a/actionpack/test/controller/dispatcher_test.rb b/actionpack/test/controller/dispatcher_test.rb
deleted file mode 100644
index 7e19bce3b7..0000000000
--- a/actionpack/test/controller/dispatcher_test.rb
+++ /dev/null
@@ -1,59 +0,0 @@
-require 'abstract_unit'
-
-# Ensure deprecated dispatcher works
-class DeprecatedDispatcherTest < ActiveSupport::TestCase
-  class DummyApp
-    def call(env)
-      [200, {}, 'response']
-    end
-  end 
-
-  def setup
-    ActionDispatch::Callbacks.reset_callbacks(:prepare)
-    ActionDispatch::Callbacks.reset_callbacks(:call)
-  end
-
-  def test_assert_deprecated_to_prepare
-    a = nil
-
-    assert_deprecated do
-      ActionController::Dispatcher.to_prepare { a = 1 }
-    end
-
-    assert_nil a
-    dispatch
-    assert_equal 1, a
-  end
-
-  def test_assert_deprecated_before_dispatch
-    a = nil
-
-    assert_deprecated do
-      ActionController::Dispatcher.before_dispatch { a = 1 }
-    end
-
-    assert_nil a
-    dispatch
-    assert_equal 1, a
-  end
-
-  def test_assert_deprecated_after_dispatch
-    a = nil
-
-    assert_deprecated do
-      ActionController::Dispatcher.after_dispatch { a = 1 }
-    end
-
-    assert_nil a
-    dispatch
-    assert_equal 1, a
-  end
-
-  private
-
-    def dispatch(cache_classes = true)
-      @dispatcher ||= ActionDispatch::Callbacks.new(DummyApp.new, !cache_classes)
-      @dispatcher.call({'rack.input' => StringIO.new('')})
-    end
-
-end
diff --git a/actionpack/test/controller/filters_test.rb b/actionpack/test/controller/filters_test.rb
index 14f1bd797a..9e44e8e088 100644
--- a/actionpack/test/controller/filters_test.rb
+++ b/actionpack/test/controller/filters_test.rb
@@ -78,7 +78,8 @@ class FilterTest < ActionController::TestCase
   end
 
   class RenderingController < ActionController::Base
-    before_filter :render_something_else
+    before_filter :before_filter_rendering
+    after_filter :unreached_after_filter
 
     def show
       @ran_action = true
@@ -86,9 +87,59 @@ class FilterTest < ActionController::TestCase
     end
 
     private
-      def render_something_else
+      def before_filter_rendering
+        @ran_filter ||= []
+        @ran_filter << "before_filter_rendering"
         render :inline => "something else"
       end
+
+      def unreached_after_filter
+        @ran_filter << "unreached_after_filter_after_render"
+      end
+  end
+
+  class RenderingForPrependAfterFilterController < RenderingController
+    prepend_after_filter :unreached_prepend_after_filter
+
+    private
+      def unreached_prepend_after_filter
+        @ran_filter << "unreached_preprend_after_filter_after_render"
+      end
+  end
+
+  class BeforeFilterRedirectionController < ActionController::Base
+    before_filter :before_filter_redirects
+    after_filter :unreached_after_filter
+
+    def show
+      @ran_action = true
+      render :inline => "ran show action"
+    end
+
+    def target_of_redirection
+      @ran_target_of_redirection = true
+      render :inline => "ran target_of_redirection action"
+    end
+
+    private
+      def before_filter_redirects
+        @ran_filter ||= []
+        @ran_filter << "before_filter_redirects"
+        redirect_to(:action => 'target_of_redirection')
+      end
+
+      def unreached_after_filter
+        @ran_filter << "unreached_after_filter_after_redirection"
+      end
+  end
+
+  class BeforeFilterRedirectionForPrependAfterFilterController < BeforeFilterRedirectionController
+    prepend_after_filter :unreached_prepend_after_filter_after_redirection
+
+    private
+      def unreached_prepend_after_filter_after_redirection
+        @ran_filter << "unreached_prepend_after_filter_after_redirection"
+      end
   end
 
   class ConditionalFilterController < ActionController::Base
@@ -314,6 +365,7 @@ class FilterTest < ActionController::TestCase
 
     def initialize
       @@execution_log = ""
+      super()
     end
 
     before_filter { |c| c.class.execution_log << " before procfilter "  }
@@ -447,18 +499,34 @@ class FilterTest < ActionController::TestCase
 
   class ::AppSweeper < ActionController::Caching::Sweeper; end
   class SweeperTestController < ActionController::Base
-    cache_sweeper :app_sweeper  
+    cache_sweeper :app_sweeper
     def show
       render :text => 'hello world'
     end
   end
+
+  class ImplicitActionsController < ActionController::Base
+    before_filter :find_only, :only => :edit
+    before_filter :find_except, :except => :edit
+
+    private
+
+    def find_only
+      @only = 'Only'
+    end
+
+    def find_except
+      @except = 'Except'
+    end
+  end
+
   def test_sweeper_should_not_block_rendering
     response = test_process(SweeperTestController)
     assert_equal 'hello world', response.body
   end
 
   def test_before_method_of_sweeper_should_always_return_true
-    sweeper =  ActionController::Caching::Sweeper.send(:new)
+    sweeper = ActionController::Caching::Sweeper.send(:new)
     assert sweeper.before(TestController.new)
   end
 
@@ -611,7 +679,7 @@ class FilterTest < ActionController::TestCase
   end
 
   def test_prepending_and_appending_around_filter
-    controller = test_process(MixedFilterController)
+    test_process(MixedFilterController)
     assert_equal " before aroundfilter  before procfilter  before appended aroundfilter " +
                  " after appended aroundfilter  after procfilter  after aroundfilter ",
                  MixedFilterController.execution_log
@@ -623,6 +691,32 @@ class FilterTest < ActionController::TestCase
     assert !assigns["ran_action"]
   end
 
+  def test_before_filter_rendering_breaks_filtering_chain_for_after_filter
+    test_process(RenderingController)
+    assert_equal %w( before_filter_rendering ), assigns["ran_filter"]
+    assert !assigns["ran_action"]
+  end
+
+  def test_before_filter_redirects_breaks_filtering_chain_for_after_filter
+    test_process(BeforeFilterRedirectionController)
+    assert_response :redirect
+    assert_equal "http://test.host/filter_test/before_filter_redirection/target_of_redirection", redirect_to_url
+    assert_equal %w( before_filter_redirects ), assigns["ran_filter"]
+  end
+
+  def test_before_filter_rendering_breaks_filtering_chain_for_preprend_after_filter
+    test_process(RenderingForPrependAfterFilterController)
+    assert_equal %w( before_filter_rendering ), assigns["ran_filter"]
+    assert !assigns["ran_action"]
+  end
+
+  def test_before_filter_redirects_breaks_filtering_chain_for_preprend_after_filter
+    test_process(BeforeFilterRedirectionForPrependAfterFilterController)
+    assert_response :redirect
+    assert_equal "http://test.host/filter_test/before_filter_redirection_for_prepend_after_filter/target_of_redirection", redirect_to_url
+    assert_equal %w( before_filter_redirects ), assigns["ran_filter"]
+  end
+
   def test_filters_with_mixed_specialization_run_in_order
     assert_nothing_raised do
       response = test_process(MixedSpecializationController, 'bar')
@@ -668,7 +762,7 @@ class FilterTest < ActionController::TestCase
     assert_equal %w( ensure_login find_user ), assigns["ran_filter"]
 
     test_process(ConditionalSkippingController, "login")
-    assert_nil @controller.instance_variable_get("@ran_after_filter")
+    assert !@controller.instance_variable_defined?("@ran_after_filter")
     test_process(ConditionalSkippingController, "change_password")
     assert_equal %w( clean_up ), @controller.instance_variable_get("@ran_after_filter")
   end
@@ -704,6 +798,18 @@ class FilterTest < ActionController::TestCase
     assert_equal("I rescued this: #<FilterTest::ErrorToRescue: Something made the bad noise.>", response.body)
   end
 
+  def test_filters_obey_only_and_except_for_implicit_actions
+    test_process(ImplicitActionsController, 'show')
+    assert_equal 'Except', assigns(:except)
+    assert_nil assigns(:only)
+    assert_equal 'show', response.body
+
+    test_process(ImplicitActionsController, 'edit')
+    assert_equal 'Only', assigns(:only)
+    assert_nil assigns(:except)
+    assert_equal 'edit', response.body
+  end
+
   private
     def test_process(controller, action = "show")
       @controller = controller.is_a?(Class) ? controller.new : controller
@@ -756,12 +862,12 @@ class ControllerWithSymbolAsFilter < PostsController
 
     def without_exception
       # Do stuff...
-      1 + 1
+      wtf = 1 + 1
 
       yield
 
       # Do stuff...
-      1 + 1
+      wtf += 1
     end
 end
 
diff --git a/actionpack/test/controller/flash_test.rb b/actionpack/test/controller/flash_test.rb
index 4be09f8c83..3569a2f213 100644
--- a/actionpack/test/controller/flash_test.rb
+++ b/actionpack/test/controller/flash_test.rb
@@ -209,7 +209,7 @@ class FlashTest < ActionController::TestCase
   end
 end
 
-class FlashIntegrationTest < ActionController::IntegrationTest
+class FlashIntegrationTest < ActionDispatch::IntegrationTest
   SessionKey = '_myapp_session'
   SessionSecret = 'b3c631c314c0bbca50c1b2843150fe33'
 
@@ -255,7 +255,7 @@ class FlashIntegrationTest < ActionController::IntegrationTest
 
     def with_test_route_set
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => FlashIntegrationTest::TestController
         end
 
diff --git a/actionpack/test/controller/helper_test.rb b/actionpack/test/controller/helper_test.rb
index 9b9657929f..9f0670ffdf 100644
--- a/actionpack/test/controller/helper_test.rb
+++ b/actionpack/test/controller/helper_test.rb
@@ -25,6 +25,32 @@ class AllHelpersController < ActionController::Base
   helper :all
 end
 
+module ImpressiveLibrary
+  extend ActiveSupport::Concern
+  included do
+    helper_method :useful_function
+  end
+
+  def useful_function() end
+end
+
+ActionController::Base.send :include, ImpressiveLibrary
+
+class JustMeController < ActionController::Base
+  clear_helpers
+
+  def flash
+    render :inline => "<h1><%= notice %></h1>"
+  end
+
+  def lib
+    render :inline => '<%= useful_function %>'
+  end
+end
+
+class MeTooController < JustMeController
+end
+
 module LocalAbcHelper
   def a() end
   def b() end
@@ -50,7 +76,7 @@ class HelperTest < ActiveSupport::TestCase
     # Set default test helper.
     self.test_helper = LocalAbcHelper
   end
-  
+
   def test_deprecated_helper
     assert_equal expected_helper_methods, missing_methods
     assert_nothing_raised { @controller_class.helper TestHelper }
@@ -70,28 +96,45 @@ class HelperTest < ActiveSupport::TestCase
 
   def call_controller(klass, action)
     request  = ActionController::TestRequest.new
-    klass.action(action).call(request.env)    
+    klass.action(action).call(request.env)
   end
 
   def test_helper_for_nested_controller
-    assert_equal 'hello: Iz guuut!', 
+    assert_equal 'hello: Iz guuut!',
       call_controller(Fun::GamesController, "render_hello_world").last.body
     # request  = ActionController::TestRequest.new
-    # 
+    #
     # resp = Fun::GamesController.action(:render_hello_world).call(request.env)
     # assert_equal 'hello: Iz guuut!', resp.last.body
   end
 
   def test_helper_for_acronym_controller
     assert_equal "test: baz", call_controller(Fun::PdfController, "test").last.body
-    # 
+    #
     # request  = ActionController::TestRequest.new
     # response = ActionController::TestResponse.new
     # request.action = 'test'
-    # 
+    #
     # assert_equal 'test: baz', Fun::PdfController.process(request, response).body
   end
 
+  def test_default_helpers_only
+    assert_equal [JustMeHelper], JustMeController._helpers.ancestors.reject(&:anonymous?)
+    assert_equal [MeTooHelper, JustMeHelper], MeTooController._helpers.ancestors.reject(&:anonymous?)
+  end
+
+  def test_base_helper_methods_after_clear_helpers
+    assert_nothing_raised do
+      call_controller(JustMeController, "flash")
+    end
+  end
+
+  def test_lib_helper_methods_after_clear_helpers
+    assert_nothing_raised do
+      call_controller(JustMeController, "lib")
+    end
+  end
+
   def test_all_helpers
     methods = AllHelpersController._helpers.instance_methods.map {|m| m.to_s}
 
@@ -135,17 +178,6 @@ class HelperTest < ActiveSupport::TestCase
     assert methods.include?('foobar')
   end
 
-  def test_deprecation
-    assert_deprecated do
-      ActionController::Base.helpers_dir = "some/foo/bar"
-    end
-    assert_deprecated do
-      assert_equal ["some/foo/bar"], ActionController::Base.helpers_dir
-    end
-  ensure
-    ActionController::Base.helpers_path = File.expand_path('../../fixtures/helpers', __FILE__)
-  end
-
   private
     def expected_helper_methods
       TestHelper.instance_methods.map {|m| m.to_s }
@@ -192,7 +224,7 @@ class IsolatedHelpersTest < ActiveSupport::TestCase
 
   def call_controller(klass, action)
     request  = ActionController::TestRequest.new
-    klass.action(action).call(request.env)    
+    klass.action(action).call(request.env)
   end
 
   def setup
diff --git a/actionpack/test/controller/http_basic_authentication_test.rb b/actionpack/test/controller/http_basic_authentication_test.rb
index 23688ca584..01c650a494 100644
--- a/actionpack/test/controller/http_basic_authentication_test.rb
+++ b/actionpack/test/controller/http_basic_authentication_test.rb
@@ -13,7 +13,7 @@ class HttpBasicAuthenticationTest < ActionController::TestCase
     def display
       render :text => 'Definitely Maybe'
     end
-    
+
     def show
       render :text => 'Only for loooooong credentials'
     end
@@ -33,7 +33,7 @@ class HttpBasicAuthenticationTest < ActionController::TestCase
         request_http_basic_authentication("SuperSecret")
       end
     end
-    
+
     def authenticate_long_credentials
       authenticate_or_request_with_http_basic do |username, password|
         username == '1234567890123456789012345678901234567890' && password == '1234567890123456789012345678901234567890'
@@ -56,7 +56,7 @@ class HttpBasicAuthenticationTest < ActionController::TestCase
     test "successful authentication with #{header.downcase} and long credentials" do
       @request.env[header] = encode_credentials('1234567890123456789012345678901234567890', '1234567890123456789012345678901234567890')
       get :show
-      
+
       assert_response :success
       assert_equal 'Only for loooooong credentials', @response.body, "Authentication failed for request header #{header} and long credentials"
     end
diff --git a/actionpack/test/controller/http_token_authentication_test.rb b/actionpack/test/controller/http_token_authentication_test.rb
index 3dfccae3db..3054c1684c 100644
--- a/actionpack/test/controller/http_token_authentication_test.rb
+++ b/actionpack/test/controller/http_token_authentication_test.rb
@@ -13,7 +13,7 @@ class HttpTokenAuthenticationTest < ActionController::TestCase
     def display
       render :text => 'Definitely Maybe'
     end
-    
+
     def show
       render :text => 'Only for loooooong credentials'
     end
@@ -33,7 +33,7 @@ class HttpTokenAuthenticationTest < ActionController::TestCase
         request_http_token_authentication("SuperSecret")
       end
     end
-    
+
     def authenticate_long_credentials
       authenticate_or_request_with_http_token do |token, options|
         token == '1234567890123456789012345678901234567890' && options[:algorithm] == 'test'
@@ -56,7 +56,7 @@ class HttpTokenAuthenticationTest < ActionController::TestCase
     test "successful authentication with #{header.downcase} and long credentials" do
       @request.env[header] = encode_credentials('1234567890123456789012345678901234567890', :algorithm => 'test')
       get :show
-      
+
       assert_response :success
       assert_equal 'Only for loooooong credentials', @response.body, "Authentication failed for request header #{header} and long credentials"
     end
diff --git a/actionpack/test/controller/integration_test.rb b/actionpack/test/controller/integration_test.rb
index 5ee8e2b6ae..f0d62b0b13 100644
--- a/actionpack/test/controller/integration_test.rb
+++ b/actionpack/test/controller/integration_test.rb
@@ -8,7 +8,7 @@ class SessionTest < Test::Unit::TestCase
   }
 
   def setup
-    @session = ActionController::Integration::Session.new(StubApp)
+    @session = ActionDispatch::Integration::Session.new(StubApp)
   end
 
   def test_https_bang_works_and_sets_truth_by_default
@@ -167,7 +167,7 @@ end
 
 class IntegrationTestTest < Test::Unit::TestCase
   def setup
-    @test = ::ActionController::IntegrationTest.new(:default_test)
+    @test = ::ActionDispatch::IntegrationTest.new(:app)
     @test.class.stubs(:fixture_table_names).returns([])
     @session = @test.open_session
   end
@@ -202,7 +202,7 @@ end
 
 # Tests that integration tests don't call Controller test methods for processing.
 # Integration tests have their own setup and teardown.
-class IntegrationTestUsesCorrectClass < ActionController::IntegrationTest
+class IntegrationTestUsesCorrectClass < ActionDispatch::IntegrationTest
   def self.fixture_table_names
     []
   end
@@ -218,7 +218,7 @@ class IntegrationTestUsesCorrectClass < ActionController::IntegrationTest
   end
 end
 
-class IntegrationProcessTest < ActionController::IntegrationTest
+class IntegrationProcessTest < ActionDispatch::IntegrationTest
   class IntegrationController < ActionController::Base
     def get
       respond_to do |format|
@@ -427,7 +427,7 @@ class IntegrationProcessTest < ActionController::IntegrationTest
           include set.url_helpers
         end
 
-        set.draw do |map|
+        set.draw do
           match ':action', :to => controller
           get 'get/:action', :to => controller
         end
@@ -439,7 +439,7 @@ class IntegrationProcessTest < ActionController::IntegrationTest
     end
 end
 
-class MetalIntegrationTest < ActionController::IntegrationTest
+class MetalIntegrationTest < ActionDispatch::IntegrationTest
   include SharedTestRoutes.url_helpers
 
   class Poller
@@ -476,7 +476,7 @@ class MetalIntegrationTest < ActionController::IntegrationTest
   end
 end
 
-class ApplicationIntegrationTest < ActionController::IntegrationTest
+class ApplicationIntegrationTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     def index
       render :text => "index"
diff --git a/actionpack/test/controller/layout_test.rb b/actionpack/test/controller/layout_test.rb
index 165c61ffad..cafe2b9320 100644
--- a/actionpack/test/controller/layout_test.rb
+++ b/actionpack/test/controller/layout_test.rb
@@ -46,13 +46,13 @@ class LayoutAutoDiscoveryTest < ActionController::TestCase
   def test_application_layout_is_default_when_no_controller_match
     @controller = ProductController.new
     get :hello
-    assert_equal 'layout_test.rhtml hello.rhtml', @response.body
+    assert_equal 'layout_test.erb hello.erb', @response.body
   end
 
   def test_controller_name_layout_name_match
     @controller = ItemController.new
     get :hello
-    assert_equal 'item.rhtml hello.rhtml', @response.body
+    assert_equal 'item.erb hello.erb', @response.body
   end
 
   def test_third_party_template_library_auto_discovers_layout
@@ -65,13 +65,13 @@ class LayoutAutoDiscoveryTest < ActionController::TestCase
   def test_namespaced_controllers_auto_detect_layouts1
     @controller = ControllerNameSpace::NestedController.new
     get :hello
-    assert_equal 'controller_name_space/nested.rhtml hello.rhtml', @response.body
+    assert_equal 'controller_name_space/nested.erb hello.erb', @response.body
   end
 
   def test_namespaced_controllers_auto_detect_layouts2
     @controller = MultipleExtensions.new
     get :hello
-    assert_equal 'multiple_extensions.html.erb hello.rhtml', @response.body.strip
+    assert_equal 'multiple_extensions.html.erb hello.erb', @response.body.strip
   end
 end
 
@@ -79,7 +79,7 @@ class DefaultLayoutController < LayoutTest
 end
 
 class AbsolutePathLayoutController < LayoutTest
-  layout File.expand_path(File.expand_path(__FILE__) + '/../../fixtures/layout_tests/layouts/layout_test.rhtml')
+  layout File.expand_path(File.expand_path(__FILE__) + '/../../fixtures/layout_tests/layouts/layout_test.erb')
 end
 
 class HasOwnLayoutController < LayoutTest
@@ -115,7 +115,7 @@ end
 
 class LayoutSetInResponseTest < ActionController::TestCase
   include ActionView::Template::Handlers
-  
+
   def test_layout_set_when_using_default_layout
     @controller = DefaultLayoutController.new
     get :hello
@@ -127,7 +127,7 @@ class LayoutSetInResponseTest < ActionController::TestCase
     get :hello
     assert_template :layout => "layouts/item"
   end
-  
+
   def test_layout_only_exception_when_included
     @controller = OnlyLayoutController.new
     get :hello
@@ -137,7 +137,7 @@ class LayoutSetInResponseTest < ActionController::TestCase
   def test_layout_only_exception_when_excepted
     @controller = OnlyLayoutController.new
     get :goodbye
-    assert !@response.body.include?("item.rhtml"), "#{@response.body.inspect} included 'item.rhtml'"
+    assert !@response.body.include?("item.erb"), "#{@response.body.inspect} included 'item.erb'"
   end
 
   def test_layout_except_exception_when_included
@@ -149,7 +149,7 @@ class LayoutSetInResponseTest < ActionController::TestCase
   def test_layout_except_exception_when_excepted
     @controller = ExceptLayoutController.new
     get :goodbye
-    assert !@response.body.include?("item.rhtml"), "#{@response.body.inspect} included 'item.rhtml'"
+    assert !@response.body.include?("item.erb"), "#{@response.body.inspect} included 'item.erb'"
   end
 
   def test_layout_set_when_using_render
@@ -173,7 +173,7 @@ class LayoutSetInResponseTest < ActionController::TestCase
   def test_absolute_pathed_layout
     @controller = AbsolutePathLayoutController.new
     get :hello
-    assert_equal "layout_test.rhtml hello.rhtml", @response.body.strip
+    assert_equal "layout_test.erb hello.erb", @response.body.strip
   end
 end
 
@@ -184,7 +184,7 @@ class RenderWithTemplateOptionController < LayoutTest
 end
 
 class SetsNonExistentLayoutFile < LayoutTest
-  layout "nofile.rhtml"
+  layout "nofile.erb"
 end
 
 class LayoutExceptionRaised < ActionController::TestCase
@@ -208,7 +208,7 @@ class LayoutStatusIsRenderedTest < ActionController::TestCase
   end
 end
 
-unless Config::CONFIG['host_os'] =~ /mswin|mingw/
+unless RbConfig::CONFIG['host_os'] =~ /mswin|mingw/
   class LayoutSymlinkedTest < LayoutTest
     layout "symlinked/symlinked_layout"
   end
diff --git a/actionpack/test/controller/log_subscriber_test.rb b/actionpack/test/controller/log_subscriber_test.rb
index 0a18741f0c..ddfa3df552 100644
--- a/actionpack/test/controller/log_subscriber_test.rb
+++ b/actionpack/test/controller/log_subscriber_test.rb
@@ -16,10 +16,6 @@ module Another
       send_data "cool data", :filename => "file.txt"
     end
 
-    def xfile_sender
-      send_file File.expand_path("company.rb", FIXTURE_LOAD_PATH), :x_sendfile => true
-    end
-
     def file_sender
       send_file File.expand_path("company.rb", FIXTURE_LOAD_PATH)
     end
@@ -28,10 +24,19 @@ module Another
       render :inline => "<%= cache('foo'){ 'bar' } %>"
     end
 
+    def with_fragment_cache_and_percent_in_key
+      render :inline => "<%= cache('foo%bar'){ 'Contains % sign in key' } %>"
+    end
+
     def with_page_cache
       cache_page("Super soaker", "/index.html")
       render :nothing => true
     end
+    
+    def with_exception
+      raise Exception
+    end
+    
   end
 end
 
@@ -72,8 +77,8 @@ class ACLogSubscriberTest < ActionController::TestCase
     get :show
     wait
     assert_equal 2, logs.size
-    assert_match /Completed/, logs.last
-    assert_match /200 OK/, logs.last
+    assert_match(/Completed/, logs.last)
+    assert_match(/200 OK/, logs.last)
   end
 
   def test_process_action_without_parameters
@@ -93,7 +98,7 @@ class ACLogSubscriberTest < ActionController::TestCase
   def test_process_action_with_view_runtime
     get :show
     wait
-    assert_match /\(Views: [\d\.]+ms\)/, logs[1]
+    assert_match(/\(Views: [\d.]+ms\)/, logs[1])
   end
 
   def test_process_action_with_filter_parameters
@@ -103,9 +108,9 @@ class ACLogSubscriberTest < ActionController::TestCase
     wait
 
     params = logs[1]
-    assert_match /"amount"=>"\[FILTERED\]"/, params
-    assert_match /"lifo"=>"\[FILTERED\]"/, params
-    assert_match /"step"=>"1"/, params
+    assert_match(/"amount"=>"\[FILTERED\]"/, params)
+    assert_match(/"lifo"=>"\[FILTERED\]"/, params)
+    assert_match(/"step"=>"1"/, params)
   end
 
   def test_redirect_to
@@ -121,7 +126,7 @@ class ACLogSubscriberTest < ActionController::TestCase
     wait
 
     assert_equal 3, logs.size
-    assert_match /Sent data file\.txt/, logs[1]
+    assert_match(/Sent data file\.txt/, logs[1])
   end
 
   def test_send_file
@@ -129,27 +134,30 @@ class ACLogSubscriberTest < ActionController::TestCase
     wait
 
     assert_equal 3, logs.size
-    assert_match /Sent file/, logs[1]
-    assert_match /test\/fixtures\/company\.rb/, logs[1]
+    assert_match(/Sent file/, logs[1])
+    assert_match(/test\/fixtures\/company\.rb/, logs[1])
   end
 
-  def test_send_xfile
-    assert_deprecated { get :xfile_sender }
+  def test_with_fragment_cache
+    @controller.config.perform_caching = true
+    get :with_fragment_cache
     wait
 
-    assert_equal 3, logs.size
-    assert_match /Sent file/, logs[1]
-    assert_match /test\/fixtures\/company\.rb/, logs[1]
+    assert_equal 4, logs.size
+    assert_match(/Read fragment views\/foo/, logs[1])
+    assert_match(/Write fragment views\/foo/, logs[2])
+  ensure
+    @controller.config.perform_caching = true
   end
 
-  def test_with_fragment_cache
+  def test_with_fragment_cache_and_percent_in_key
     @controller.config.perform_caching = true
-    get :with_fragment_cache
+    get :with_fragment_cache_and_percent_in_key
     wait
 
     assert_equal 4, logs.size
-    assert_match /Exist fragment\? views\/foo/, logs[1]
-    assert_match /Write fragment views\/foo/, logs[2]
+    assert_match(/Read fragment views\/foo/, logs[1])
+    assert_match(/Write fragment views\/foo/, logs[2])
   ensure
     @controller.config.perform_caching = true
   end
@@ -160,12 +168,22 @@ class ACLogSubscriberTest < ActionController::TestCase
     wait
 
     assert_equal 3, logs.size
-    assert_match /Write page/, logs[1]
-    assert_match /\/index\.html/, logs[1]
+    assert_match(/Write page/, logs[1])
+    assert_match(/\/index\.html/, logs[1])
   ensure
     @controller.config.perform_caching = true
   end
 
+  def test_process_action_with_exception_includes_http_status_code
+    begin
+      get :with_exception
+      wait
+    rescue Exception
+    end
+    assert_equal 2, logs.size
+    assert_match(/Completed 500/, logs.last)
+  end
+
   def logs
     @logs ||= @logger.logged(:info)
   end
diff --git a/actionpack/test/controller/mime_responds_test.rb b/actionpack/test/controller/mime_responds_test.rb
index b5ce391b61..5debf96232 100644
--- a/actionpack/test/controller/mime_responds_test.rb
+++ b/actionpack/test/controller/mime_responds_test.rb
@@ -2,6 +2,14 @@ require 'abstract_unit'
 require 'controller/fake_models'
 require 'active_support/core_ext/hash/conversions'
 
+class StarStarMimeController < ActionController::Base
+  layout nil
+
+  def index
+    render
+  end
+end
+
 class RespondToController < ActionController::Base
   layout :set_layout
 
@@ -36,7 +44,7 @@ class RespondToController < ActionController::Base
       type.all  { render :text => "Nothing" }
     end
   end
-  
+
   def json_xml_or_html
     respond_to do |type|
       type.json { render :text => 'JSON' }
@@ -44,7 +52,7 @@ class RespondToController < ActionController::Base
       type.html { render :text => 'HTML' }
     end
   end
-  
+
 
   def forced_xml
     request.format = :xml
@@ -89,7 +97,6 @@ class RespondToController < ActionController::Base
     end
   end
 
-  Mime::Type.register("text/x-mobile", :mobile)
 
   def custom_constant_handling
     respond_to do |type|
@@ -126,7 +133,6 @@ class RespondToController < ActionController::Base
     end
   end
 
-  Mime::Type.register_alias("text/html", :iphone)
 
   def iphone_with_html_response_type
     request.format = :iphone if request.env["HTTP_ACCEPT"] == "text/iphone"
@@ -160,16 +166,43 @@ class RespondToController < ActionController::Base
     end
 end
 
+class StarStarMimeControllerTest < ActionController::TestCase
+  tests StarStarMimeController
+
+  def test_javascript_with_format
+    @request.accept = "text/javascript"
+    get :index, :format => 'js'
+    assert_match "function addition(a,b){ return a+b; }", @response.body
+  end
+
+  def test_javascript_with_no_format
+    @request.accept = "text/javascript"
+    get :index
+    assert_match "function addition(a,b){ return a+b; }", @response.body
+  end
+
+  def test_javascript_with_no_format_only_star_star
+    @request.accept = "*/*"
+    get :index
+    assert_match "function addition(a,b){ return a+b; }", @response.body
+  end
+
+end
+
 class RespondToControllerTest < ActionController::TestCase
   tests RespondToController
 
   def setup
     super
     @request.host = "www.example.com"
+    Mime::Type.register_alias("text/html", :iphone)
+    Mime::Type.register("text/x-mobile", :mobile)
   end
 
   def teardown
     super
+    Mime::Type.unregister(:iphone)
+    Mime::Type.unregister(:mobile)
   end
 
   def test_html
@@ -216,6 +249,16 @@ class RespondToControllerTest < ActionController::TestCase
     assert_response 406
   end
 
+  def test_json_or_yaml_with_leading_star_star
+    @request.accept = "*/*, application/json"
+    get :json_xml_or_html
+    assert_equal 'HTML', @response.body
+
+    @request.accept = "*/* , application/json"
+    get :json_xml_or_html
+    assert_equal 'HTML', @response.body
+  end
+
   def test_json_or_yaml
     xhr :get, :json_or_yaml
     assert_equal 'JSON', @response.body
@@ -373,17 +416,17 @@ class RespondToControllerTest < ActionController::TestCase
     get :handle_any_any
     assert_equal 'Whatever you ask for, I got it', @response.body
   end
-  
+
   def test_browser_check_with_any_any
     @request.accept = "application/json, application/xml"
     get :json_xml_or_html
     assert_equal 'JSON', @response.body
-    
+
     @request.accept = "application/json, application/xml, */*"
     get :json_xml_or_html
     assert_equal 'HTML', @response.body
   end
-  
+
 
   def test_rjs_type_skips_layout
     @request.accept = "text/javascript"
@@ -487,6 +530,10 @@ class RespondWithController < ActionController::Base
     respond_with(resource)
   end
 
+  def using_hash_resource
+    respond_with({:result => resource})
+  end
+
   def using_resource_with_block
     respond_with(resource) do |format|
       format.csv { render :text => "CSV" }
@@ -518,7 +565,7 @@ class RespondWithController < ActionController::Base
 
   def using_resource_with_action
     respond_with(resource, :action => :foo) do |format|
-      format.html { raise ActionView::MissingTemplate.new([], "foo/bar", {}, false) }
+      format.html { raise ActionView::MissingTemplate.new([], "bar", ["foo"], {}, false) }
     end
   end
 
@@ -552,6 +599,17 @@ class InheritedRespondWithController < RespondWithController
   end
 end
 
+class RenderJsonRespondWithController < RespondWithController
+  clear_respond_to
+  respond_to :json
+
+  def index
+    respond_with(resource) do |format|
+      format.json { render :json => RenderJsonTestException.new('boom') }
+    end
+  end
+end
+
 class EmptyRespondWithController < ActionController::Base
   def index
     respond_with(Customer.new("david", 13))
@@ -564,10 +622,14 @@ class RespondWithControllerTest < ActionController::TestCase
   def setup
     super
     @request.host = "www.example.com"
+    Mime::Type.register_alias('text/html', :iphone)
+    Mime::Type.register('text/x-mobile', :mobile)
   end
 
   def teardown
     super
+    Mime::Type.unregister(:iphone)
+    Mime::Type.unregister(:mobile)
   end
 
   def test_using_resource
@@ -587,6 +649,18 @@ class RespondWithControllerTest < ActionController::TestCase
     end
   end
 
+  def test_using_hash_resource
+    @request.accept = "application/xml"
+    get :using_hash_resource
+    assert_equal "application/xml", @response.content_type
+    assert_equal "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<hash>\n  <name>david</name>\n</hash>\n", @response.body
+
+    @request.accept = "application/json"
+    get :using_hash_resource
+    assert_equal "application/json", @response.content_type
+    assert_equal %Q[{"result":{"name":"david","id":13}}], @response.body
+  end
+
   def test_using_resource_with_block
     @request.accept = "*/*"
     get :using_resource_with_block
@@ -709,6 +783,15 @@ class RespondWithControllerTest < ActionController::TestCase
     assert_equal " ", @response.body
   end
 
+  def test_using_resource_for_put_with_json_yields_ok_on_success
+    Customer.any_instance.stubs(:to_json).returns('{"name": "David"}')
+    @request.accept = "application/json"
+    put :using_resource
+    assert_equal "application/json", @response.content_type
+    assert_equal 200, @response.status
+    assert_equal "{}", @response.body
+  end
+
   def test_using_resource_for_put_with_xml_yields_unprocessable_entity_on_failure
     @request.accept = "application/xml"
     errors = { :name => :invalid }
@@ -739,6 +822,16 @@ class RespondWithControllerTest < ActionController::TestCase
     assert_equal " ", @response.body
   end
 
+  def test_using_resource_for_delete_with_json_yields_ok_on_success
+    Customer.any_instance.stubs(:to_json).returns('{"name": "David"}')
+    Customer.any_instance.stubs(:destroyed?).returns(true)
+    @request.accept = "application/json"
+    delete :using_resource
+    assert_equal "application/json", @response.content_type
+    assert_equal 200, @response.status
+    assert_equal "{}", @response.body
+  end
+
   def test_using_resource_for_delete_with_html_redirects_on_failure
     with_test_route_set do
       errors = { :name => :invalid }
@@ -784,8 +877,8 @@ class RespondWithControllerTest < ActionController::TestCase
     get :using_resource_with_collection
     assert_equal "application/xml", @response.content_type
     assert_equal 200, @response.status
-    assert_match /<name>david<\/name>/, @response.body
-    assert_match /<name>jamis<\/name>/, @response.body
+    assert_match(/<name>david<\/name>/, @response.body)
+    assert_match(/<name>jamis<\/name>/, @response.body)
   end
 
   def test_using_resource_with_action
@@ -834,6 +927,14 @@ class RespondWithControllerTest < ActionController::TestCase
     assert_equal "JSON", @response.body
   end
 
+  def test_render_json_object_responds_to_str_still_produce_json
+    @controller = RenderJsonRespondWithController.new
+    @request.accept = "application/json"
+    get :index, :format => :json
+    assert_match(/"message":"boom"/, @response.body)
+    assert_match(/"error":"RenderJsonTestException"/, @response.body)
+  end
+
   def test_no_double_render_is_raised
     @request.accept = "text/html"
     assert_raise ActionView::MissingTemplate do
@@ -876,7 +977,7 @@ class RespondWithControllerTest < ActionController::TestCase
   private
     def with_test_route_set
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           resources :customers
           resources :quiz_stores do
             resources :customers
@@ -917,6 +1018,12 @@ class MimeControllerLayoutsTest < ActionController::TestCase
   def setup
     super
     @request.host = "www.example.com"
+    Mime::Type.register_alias("text/html", :iphone)
+  end
+
+  def teardown
+    super
+    Mime::Type.unregister(:iphone)
   end
 
   def test_missing_layout_renders_properly
diff --git a/actionpack/test/controller/new_base/bare_metal_test.rb b/actionpack/test/controller/new_base/bare_metal_test.rb
index 8a06e8d2a0..3ca29f1bcf 100644
--- a/actionpack/test/controller/new_base/bare_metal_test.rb
+++ b/actionpack/test/controller/new_base/bare_metal_test.rb
@@ -24,4 +24,26 @@ module BareMetalTest
       assert_equal "Hello world", string
     end
   end
+
+  class HeadController < ActionController::Metal
+    include ActionController::Head
+
+    def index
+      head :not_found
+    end
+  end
+
+  class HeadTest < ActiveSupport::TestCase
+    test "head works on its own" do
+      status = HeadController.action(:index).call(Rack::MockRequest.env_for("/")).first
+      assert_equal 404, status
+    end
+  end
+
+  class BareControllerTest < ActionController::TestCase
+    test "GET index" do
+      get :index
+      assert_equal "Hello world", @response.body
+    end
+  end
 end
diff --git a/actionpack/test/controller/new_base/content_negotiation_test.rb b/actionpack/test/controller/new_base/content_negotiation_test.rb
index b98a22dfcc..5fd5946619 100644
--- a/actionpack/test/controller/new_base/content_negotiation_test.rb
+++ b/actionpack/test/controller/new_base/content_negotiation_test.rb
@@ -7,6 +7,10 @@ module ContentNegotiation
     self.view_paths = [ActionView::FixtureResolver.new(
       "content_negotiation/basic/hello.html.erb" => "Hello world <%= request.formats.first.to_s %>!"
     )]
+
+    def all
+      render :text => self.formats.inspect
+    end
   end
 
   class TestContentNegotiation < Rack::TestCase
@@ -14,5 +18,10 @@ module ContentNegotiation
       get "/content_negotiation/basic/hello", {}, "HTTP_ACCEPT" => "*/*"
       assert_body "Hello world */*!"
     end
+
+    test "Not all mimes are converted to symbol" do
+      get "/content_negotiation/basic/all", {}, "HTTP_ACCEPT" => "text/plain, mime/another"
+      assert_body '[:text, "mime/another"]'
+    end
   end
 end
diff --git a/actionpack/test/controller/new_base/content_type_test.rb b/actionpack/test/controller/new_base/content_type_test.rb
index 33c2e442f0..8ba30944f5 100644
--- a/actionpack/test/controller/new_base/content_type_test.rb
+++ b/actionpack/test/controller/new_base/content_type_test.rb
@@ -42,10 +42,16 @@ module ContentType
 
   class ExplicitContentTypeTest < Rack::TestCase
     test "default response is HTML and UTF8" do
-      get "/content_type/base"
+      with_routing do |set|
+        set.draw do
+          match ':controller', :action => 'index'
+        end
 
-      assert_body "Hello world!"
-      assert_header "Content-Type", "text/html; charset=utf-8"
+        get "/content_type/base"
+
+        assert_body "Hello world!"
+        assert_header "Content-Type", "text/html; charset=utf-8"
+      end
     end
 
     test "setting the content type of the response directly on the response object" do
diff --git a/actionpack/test/controller/new_base/etag_test.rb b/actionpack/test/controller/new_base/etag_test.rb
deleted file mode 100644
index 51bfb2278a..0000000000
--- a/actionpack/test/controller/new_base/etag_test.rb
+++ /dev/null
@@ -1,46 +0,0 @@
-require 'abstract_unit'
-
-module Etags
-  class BasicController < ActionController::Base
-    self.view_paths = [ActionView::FixtureResolver.new(
-      "etags/basic/base.html.erb" => "Hello from without_layout.html.erb",
-      "layouts/etags.html.erb"    => "teh <%= yield %> tagz"
-    )]
-
-    def without_layout
-      render :action => "base"
-    end
-
-    def with_layout
-      render :action => "base", :layout => "etags"
-    end
-  end
-
-  class EtagTest < Rack::TestCase
-    describe "Rendering without any special etag options returns an etag that is an MD5 hash of its text"
-
-    test "an action without a layout" do
-      get "/etags/basic/without_layout"
-
-      body = "Hello from without_layout.html.erb"
-      assert_body body
-      assert_header "Etag", etag_for(body)
-      assert_status 200
-    end
-
-    test "an action with a layout" do
-      get "/etags/basic/with_layout"
-
-      body = "teh Hello from without_layout.html.erb tagz"
-      assert_body body
-      assert_header "Etag", etag_for(body)
-      assert_status 200      
-    end
-
-    private
-
-    def etag_for(text)
-      %("#{Digest::MD5.hexdigest(text)}")
-    end
-  end
-end
diff --git a/actionpack/test/controller/new_base/middleware_test.rb b/actionpack/test/controller/new_base/middleware_test.rb
index 26a66c91a6..ccef060863 100644
--- a/actionpack/test/controller/new_base/middleware_test.rb
+++ b/actionpack/test/controller/new_base/middleware_test.rb
@@ -25,8 +25,25 @@ module MiddlewareTest
       result
     end
   end
+  
+  class BlockMiddleware
+    attr_accessor :configurable_message
+    def initialize(app, &block)
+      @app = app
+      yield(self) if block_given?
+    end
+    
+    def call(env)
+      result = @app.call(env)
+      result[1]["Configurable-Message"] = configurable_message
+      result
+    end
+  end
 
   class MyController < ActionController::Metal
+    use BlockMiddleware do |config|
+      config.configurable_message = "Configured by block."
+    end
     use MyMiddleware
     middleware.insert_before MyMiddleware, ExclaimerMiddleware
 
@@ -67,6 +84,11 @@ module MiddlewareTest
       assert_equal "First!", result[1]["Middleware-Order"]
     end
 
+    test "middleware stack accepts block arguments" do
+      result = @app.call(env_for("/"))
+      assert_equal "Configured by block.", result[1]["Configurable-Message"]
+    end
+
     test "middleware stack accepts only and except as options" do
       result = ActionsController.action(:show).call(env_for("/"))
       assert_equal "First!", result[1]["Middleware-Order"]
diff --git a/actionpack/test/controller/new_base/render_action_test.rb b/actionpack/test/controller/new_base/render_action_test.rb
index d92e9c4bf2..aa44e0b282 100644
--- a/actionpack/test/controller/new_base/render_action_test.rb
+++ b/actionpack/test/controller/new_base/render_action_test.rb
@@ -83,6 +83,9 @@ module RenderAction
   end
 
   class RenderLayoutTest < Rack::TestCase
+    def setup
+    end
+
     describe "Both <controller_path>.html.erb and application.html.erb are missing"
 
     test "rendering with layout => true" do
diff --git a/actionpack/test/controller/new_base/render_implicit_action_test.rb b/actionpack/test/controller/new_base/render_implicit_action_test.rb
index 90cc7933ff..9f69d20329 100644
--- a/actionpack/test/controller/new_base/render_implicit_action_test.rb
+++ b/actionpack/test/controller/new_base/render_implicit_action_test.rb
@@ -6,10 +6,10 @@ module RenderImplicitAction
       "render_implicit_action/simple/hello_world.html.erb" => "Hello world!",
       "render_implicit_action/simple/hyphen-ated.html.erb" => "Hello hyphen-ated!"
     )]
-    
+
     def hello_world() end
   end
-  
+
   class RenderImplicitActionTest < Rack::TestCase
     test "render a simple action with new explicit call to render" do
       get "/render_implicit_action/simple/hello_world"
diff --git a/actionpack/test/controller/new_base/render_layout_test.rb b/actionpack/test/controller/new_base/render_layout_test.rb
index 372fb66b88..bb2a953536 100644
--- a/actionpack/test/controller/new_base/render_layout_test.rb
+++ b/actionpack/test/controller/new_base/render_layout_test.rb
@@ -71,7 +71,7 @@ module ControllerLayouts
     self.view_paths = [ActionView::FixtureResolver.new(
       "layouts/application.html.erb" => "<html><%= yield %></html>",
       "controller_layouts/mismatch_format/index.js.rjs" => "page[:test].ext",
-      "controller_layouts/mismatch_format/implicit.rjs" => "page[:test].ext"      
+      "controller_layouts/mismatch_format/implicit.rjs" => "page[:test].ext"
     )]
 
     def explicit
diff --git a/actionpack/test/controller/new_base/render_once_test.rb b/actionpack/test/controller/new_base/render_once_test.rb
new file mode 100644
index 0000000000..175abf8a7e
--- /dev/null
+++ b/actionpack/test/controller/new_base/render_once_test.rb
@@ -0,0 +1,86 @@
+require 'abstract_unit'
+
+module RenderTemplate
+  class RenderOnceController < ActionController::Base
+    layout false
+
+    RESOLVER = ActionView::FixtureResolver.new(
+      "test/a.html.erb"       => "a",
+      "test/b.html.erb"       => "<>",
+      "test/c.html.erb"       => "c",
+      "test/one.html.erb"     => "<%= render :once => 'result' %>",
+      "test/two.html.erb"     => "<%= render :once => 'result' %>",
+      "test/three.html.erb"   => "<%= render :once => 'result' %>",
+      "test/result.html.erb"  => "YES!",
+      "other/result.html.erb" => "NO!",
+      "layouts/test.html.erb" => "l<%= yield %>l"
+    )
+
+    self.view_paths = [RESOLVER]
+
+    def _prefixes
+      %w(test)
+    end
+
+    def multiple
+      render :once => %w(a b c)
+    end
+
+    def once
+      render :once => %w(one two three)
+    end
+
+    def duplicate
+      render :once => %w(a a a)
+    end
+
+    def with_layout
+      render :once => %w(a b c), :layout => "test"
+    end
+
+    def with_prefix
+      render :once => "result", :prefixes => %w(other)
+    end
+
+    def with_nil_prefix
+      render :once => "test/result", :prefixes => []
+    end
+  end
+
+  module Tests
+    def test_mutliple_arguments_get_all_rendered
+      get :multiple
+      assert_response "a\n<>\nc"
+    end
+
+    def test_referenced_templates_get_rendered_once
+      get :once
+      assert_response "YES!\n\n"
+    end
+
+    def test_duplicated_templates_get_rendered_once
+      get :duplicate
+      assert_response "a"
+    end
+
+    def test_layout_wraps_all_rendered_templates
+      get :with_layout
+      assert_response "la\n<>\ncl"
+    end
+
+    def test_with_prefix_option
+      get :with_prefix
+      assert_response "NO!"
+    end
+
+    def test_with_nil_prefix_option
+      get :with_nil_prefix
+      assert_response "YES!"
+    end
+  end
+
+  class TestRenderOnce < Rack::TestCase
+    testing RenderTemplate::RenderOnceController
+    include Tests
+  end
+end
diff --git a/actionpack/test/controller/new_base/render_partial_test.rb b/actionpack/test/controller/new_base/render_partial_test.rb
index 1a1b36a65e..83b0d039ad 100644
--- a/actionpack/test/controller/new_base/render_partial_test.rb
+++ b/actionpack/test/controller/new_base/render_partial_test.rb
@@ -1,27 +1,63 @@
 require 'abstract_unit'
 
 module RenderPartial
-  
+
   class BasicController < ActionController::Base
-    
+
     self.view_paths = [ActionView::FixtureResolver.new(
-      "render_partial/basic/_basic.html.erb"    => "BasicPartial!",
-      "render_partial/basic/basic.html.erb"      => "<%= @test_unchanged = 'goodbye' %><%= render :partial => 'basic' %><%= @test_unchanged %>"
+      "render_partial/basic/_basic.html.erb"     => "BasicPartial!",
+      "render_partial/basic/basic.html.erb"      => "<%= @test_unchanged = 'goodbye' %><%= render :partial => 'basic' %><%= @test_unchanged %>",
+      "render_partial/basic/with_json.html.erb"  => "<%= render 'with_json.json' %>",
+      "render_partial/basic/_with_json.json.erb" => "<%= render 'final' %>",
+      "render_partial/basic/_final.json.erb"     => "{ final: json }",
+      "render_partial/basic/overriden.html.erb"    => "<%= @test_unchanged = 'goodbye' %><%= render :partial => 'overriden' %><%= @test_unchanged %>",
+      "render_partial/basic/_overriden.html.erb"    => "ParentPartial!",
+      "render_partial/child/_overriden.html.erb"    => "OverridenPartial!"
     )]
-    
+
+    def html_with_json_inside_json
+      render :action => "with_json"
+    end
+
     def changing
       @test_unchanged = 'hello'
       render :action => "basic"
-    end    
+    end
+
+    def overriden
+      @test_unchanged = 'hello'
+    end
   end
   
+  class ChildController < BasicController; end
+
   class TestPartial < Rack::TestCase
     testing BasicController
-    
+
     test "rendering a partial in ActionView doesn't pull the ivars again from the controller" do
       get :changing
       assert_response("goodbyeBasicPartial!goodbye")
     end
+
+    test "rendering a template with renders another partial with other format that renders other partial in the same format" do
+      get :html_with_json_inside_json
+      assert_content_type "text/html; charset=utf-8"
+      assert_response "{ final: json }"
+    end
   end
-  
+
+  class TestInheritedPartial < Rack::TestCase
+    testing ChildController
+
+    test "partial from parent controller gets picked if missing in child one" do
+      get :changing
+      assert_response("goodbyeBasicPartial!goodbye")
+    end
+
+    test "partial from child controller gets picked" do
+      get :overriden
+      assert_response("goodbyeOverridenPartial!goodbye")
+    end
+  end
+
 end
diff --git a/actionpack/test/controller/new_base/render_template_test.rb b/actionpack/test/controller/new_base/render_template_test.rb
index 70cebbfd89..584f2d772c 100644
--- a/actionpack/test/controller/new_base/render_template_test.rb
+++ b/actionpack/test/controller/new_base/render_template_test.rb
@@ -4,17 +4,26 @@ module RenderTemplate
   class WithoutLayoutController < ActionController::Base
 
     self.view_paths = [ActionView::FixtureResolver.new(
-      "test/basic.html.erb"      => "Hello from basic.html.erb",
-      "shared.html.erb"          => "Elastica",
-      "locals.html.erb"          => "The secret is <%= secret %>",
-      "xml_template.xml.builder" => "xml.html do\n  xml.p 'Hello'\nend",
-      "with_raw.html.erb"        => "Hello <%=raw '<strong>this is raw</strong>' %>"
+      "test/basic.html.erb"        => "Hello from basic.html.erb",
+      "shared.html.erb"            => "Elastica",
+      "locals.html.erb"            => "The secret is <%= secret %>",
+      "xml_template.xml.builder"   => "xml.html do\n  xml.p 'Hello'\nend",
+      "with_raw.html.erb"          => "Hello <%=raw '<strong>this is raw</strong>' %>",
+      "with_implicit_raw.html.erb" => "Hello <%== '<strong>this is also raw</strong>' %>",
+      "test/with_json.html.erb"    => "<%= render :template => 'test/with_json.json' %>",
+      "test/with_json.json.erb"    => "<%= render :template => 'test/final' %>",
+      "test/final.json.erb"        => "{ final: json }",
+      "test/with_error.html.erb"   => "<%= idontexist %>"
     )]
 
     def index
       render :template => "test/basic"
     end
 
+    def html_with_json_inside_json
+      render :template => "test/with_json"
+    end
+
     def index_without_key
       render "test/basic"
     end
@@ -42,6 +51,14 @@ module RenderTemplate
     def with_raw
       render :template => "with_raw"
     end
+
+    def with_implicit_raw
+      render :template => "with_implicit_raw"
+    end
+
+    def with_error
+      render :template => "test/with_error"
+    end
   end
 
   class TestWithoutLayout < Rack::TestCase
@@ -87,6 +104,23 @@ module RenderTemplate
 
       assert_body "Hello <strong>this is raw</strong>"
       assert_status 200
+
+      get :with_implicit_raw
+
+      assert_body "Hello <strong>this is also raw</strong>"
+      assert_status 200
+    end
+
+    test "rendering a template with renders another template with other format that renders other template in the same format" do
+      get :html_with_json_inside_json
+      assert_content_type "text/html; charset=utf-8"
+      assert_response "{ final: json }"
+    end
+
+    test "rendering a template with error properly exceprts the code" do
+      get :with_error
+      assert_status 500
+      assert_match "undefined local variable or method `idontexist'", response.body
     end
   end
 
@@ -123,10 +157,14 @@ module RenderTemplate
     describe "Rendering with :template using implicit or explicit layout"
 
     test "rendering with implicit layout" do
-      get "/render_template/with_layout"
+      with_routing do |set|
+        set.draw { match ':controller', :action => :index }
 
-      assert_body "Hello from basic.html.erb, I'm here!"
-      assert_status 200
+        get "/render_template/with_layout"
+
+        assert_body "Hello from basic.html.erb, I'm here!"
+        assert_status 200
+      end
     end
 
     test "rendering with layout => :true" do
diff --git a/actionpack/test/controller/new_base/render_test.rb b/actionpack/test/controller/new_base/render_test.rb
index d985d9f9ad..d6062bfa8c 100644
--- a/actionpack/test/controller/new_base/render_test.rb
+++ b/actionpack/test/controller/new_base/render_test.rb
@@ -6,7 +6,11 @@ module Render
       "render/blank_render/index.html.erb"                  => "Hello world!",
       "render/blank_render/access_request.html.erb"         => "The request: <%= request.method.to_s.upcase %>",
       "render/blank_render/access_action_name.html.erb"     => "Action Name: <%= action_name %>",
-      "render/blank_render/access_controller_name.html.erb" => "Controller Name: <%= controller_name %>"
+      "render/blank_render/access_controller_name.html.erb" => "Controller Name: <%= controller_name %>",
+      "render/blank_render/overriden_with_own_view_paths_appended.html.erb"              => "parent content",
+      "render/blank_render/overriden_with_own_view_paths_prepended.html.erb"              => "parent content",
+      "render/blank_render/overriden.html.erb"              => "parent content",
+      "render/child_render/overriden.html.erb"              => "child content"
     )]
 
     def index
@@ -21,6 +25,15 @@ module Render
       render :action => "access_action_name"
     end
 
+    def overriden_with_own_view_paths_appended
+    end
+
+    def overriden_with_own_view_paths_prepended
+    end
+
+    def overriden
+    end
+
     private
 
     def secretz
@@ -35,17 +48,34 @@ module Render
     end
   end
 
+  class ChildRenderController < BlankRenderController
+    append_view_path ActionView::FixtureResolver.new("render/child_render/overriden_with_own_view_paths_appended.html.erb" => "child content")
+    prepend_view_path ActionView::FixtureResolver.new("render/child_render/overriden_with_own_view_paths_prepended.html.erb" => "child content")
+  end
+
   class RenderTest < Rack::TestCase
     test "render with blank" do
-      get "/render/blank_render"
+      with_routing do |set|
+        set.draw do
+          match ":controller", :action => 'index'
+        end
 
-      assert_body "Hello world!"
-      assert_status 200
+        get "/render/blank_render"
+
+        assert_body "Hello world!"
+        assert_status 200
+      end
     end
 
     test "rendering more than once raises an exception" do
-      assert_raises(AbstractController::DoubleRenderError) do
-        get "/render/double_render", {}, "action_dispatch.show_exceptions" => false
+      with_routing do |set|
+        set.draw do
+          match ":controller", :action => 'index'
+        end
+
+        assert_raises(AbstractController::DoubleRenderError) do
+          get "/render/double_render", {}, "action_dispatch.show_exceptions" => false
+        end
       end
     end
   end
@@ -65,7 +95,7 @@ module Render
       end
     end
   end
-  
+
   class TestVariousObjectsAvailableInView < Rack::TestCase
     test "The request object is accessible in the view" do
       get "/render/blank_render/access_request"
@@ -82,4 +112,26 @@ module Render
       assert_body "Controller Name: blank_render"
     end
   end
+
+  class TestViewInheritance < Rack::TestCase
+    test "Template from child controller gets picked over parent one" do
+      get "/render/child_render/overriden"
+      assert_body "child content"
+    end
+
+    test "Template from child controller with custom view_paths prepended gets picked over parent one" do
+      get "/render/child_render/overriden_with_own_view_paths_prepended"
+      assert_body "child content"
+    end
+
+    test "Template from child controller with custom view_paths appended gets picked over parent one" do
+      get "/render/child_render/overriden_with_own_view_paths_appended"
+      assert_body "child content"
+    end
+
+    test "Template from parent controller gets picked if missing in child controller" do
+      get "/render/child_render/index"
+      assert_body "Hello world!"
+    end
+  end
 end
diff --git a/actionpack/test/controller/new_base/render_text_test.rb b/actionpack/test/controller/new_base/render_text_test.rb
index 0e6f51c998..06d500cca7 100644
--- a/actionpack/test/controller/new_base/render_text_test.rb
+++ b/actionpack/test/controller/new_base/render_text_test.rb
@@ -3,7 +3,7 @@ require 'abstract_unit'
 module RenderText
   class SimpleController < ActionController::Base
     self.view_paths = [ActionView::FixtureResolver.new]
-    
+
     def index
       render :text => "hello david"
     end
@@ -14,24 +14,24 @@ module RenderText
       "layouts/application.html.erb" => "<%= yield %>, I'm here!",
       "layouts/greetings.html.erb"   => "<%= yield %>, I wish thee well.",
       "layouts/ivar.html.erb"        => "<%= yield %>, <%= @ivar %>"
-    )]    
-    
+    )]
+
     def index
       render :text => "hello david"
     end
-    
+
     def custom_code
       render :text => "hello world", :status => 404
     end
-    
+
     def with_custom_code_as_string
       render :text => "hello world", :status => "404 Not Found"
     end
-    
+
     def with_nil
       render :text => nil
     end
-    
+
     def with_nil_and_status
       render :text => nil, :status => 403
     end
@@ -39,23 +39,23 @@ module RenderText
     def with_false
       render :text => false
     end
-    
+
     def with_layout_true
       render :text => "hello world", :layout => true
     end
-    
+
     def with_layout_false
       render :text => "hello world", :layout => false
     end
-    
+
     def with_layout_nil
       render :text => "hello world", :layout => nil
     end
-    
+
     def with_custom_layout
       render :text => "hello world", :layout => "greetings"
     end
-    
+
     def with_ivar_in_layout
       @ivar = "hello world"
       render :text => "hello world", :layout => "ivar"
@@ -66,16 +66,24 @@ module RenderText
     describe "Rendering text using render :text"
 
     test "rendering text from a action with default options renders the text with the layout" do
-      get "/render_text/simple"
-      assert_body "hello david"
-      assert_status 200
+      with_routing do |set|
+        set.draw { match ':controller', :action => 'index' }
+
+        get "/render_text/simple"
+        assert_body "hello david"
+        assert_status 200
+      end
     end
 
     test "rendering text from a action with default options renders the text without the layout" do
-      get "/render_text/with_layout"
+      with_routing do |set|
+        set.draw { match ':controller', :action => 'index' }
 
-      assert_body "hello david"
-      assert_status 200
+        get "/render_text/with_layout"
+
+        assert_body "hello david"
+        assert_status 200
+      end
     end
 
     test "rendering text, while also providing a custom status code" do
diff --git a/actionpack/test/controller/new_base/render_xml_test.rb b/actionpack/test/controller/new_base/render_xml_test.rb
index d044738a78..b8527a943d 100644
--- a/actionpack/test/controller/new_base/render_xml_test.rb
+++ b/actionpack/test/controller/new_base/render_xml_test.rb
@@ -1,7 +1,7 @@
 require 'abstract_unit'
 
 module RenderXml
-  
+
   # This has no layout and it works
   class BasicController < ActionController::Base
     self.view_paths = [ActionView::FixtureResolver.new(
diff --git a/actionpack/test/controller/output_escaping_test.rb b/actionpack/test/controller/output_escaping_test.rb
index 43a8c05cda..f6913a2138 100644
--- a/actionpack/test/controller/output_escaping_test.rb
+++ b/actionpack/test/controller/output_escaping_test.rb
@@ -3,7 +3,7 @@ require 'abstract_unit'
 class OutputEscapingTest < ActiveSupport::TestCase
 
   test "escape_html shouldn't die when passed nil" do
-    assert ERB::Util.h(nil).blank?
+    assert_blank ERB::Util.h(nil)
   end
 
   test "escapeHTML should escape strings" do
diff --git a/actionpack/test/controller/record_identifier_test.rb b/actionpack/test/controller/record_identifier_test.rb
index 835a0e970b..f3e5ff8a47 100644
--- a/actionpack/test/controller/record_identifier_test.rb
+++ b/actionpack/test/controller/record_identifier_test.rb
@@ -1,30 +1,5 @@
 require 'abstract_unit'
-
-class Comment
-  extend ActiveModel::Naming
-  include ActiveModel::Conversion
-
-  attr_reader :id
-  def to_key; id ? [id] : nil end
-  def save; @id = 1 end
-  def new_record?; @id.nil? end
-  def name
-    @id.nil? ? 'new comment' : "comment ##{@id}"
-  end
-end
-
-class Sheep
-  extend ActiveModel::Naming
-  include ActiveModel::Conversion
-
-  attr_reader :id
-  def to_key; id ? [id] : nil end
-  def save; @id = 1 end
-  def new_record?; @id.nil? end
-  def name
-    @id.nil? ? 'new sheep' : "sheep ##{@id}"
-  end
-end
+require 'controller/fake_models'
 
 class RecordIdentifierTest < Test::Unit::TestCase
   include ActionController::RecordIdentifier
diff --git a/actionpack/test/controller/redirect_test.rb b/actionpack/test/controller/redirect_test.rb
index 441bc47908..92d4a6d98b 100644
--- a/actionpack/test/controller/redirect_test.rb
+++ b/actionpack/test/controller/redirect_test.rb
@@ -3,24 +3,6 @@ require 'abstract_unit'
 class WorkshopsController < ActionController::Base
 end
 
-class Workshop
-  extend ActiveModel::Naming
-  include ActiveModel::Conversion
-  attr_accessor :id
-
-  def initialize(id)
-    @id = id
-  end
-
-  def persisted?
-    id.present?
-  end
-
-  def to_s
-    id.to_s
-  end
-end
-
 class RedirectController < ActionController::Base
   def simple_redirect
     redirect_to :action => "hello_world"
@@ -99,6 +81,19 @@ class RedirectController < ActionController::Base
     redirect_to nil
   end
 
+  def redirect_to_with_block
+    redirect_to proc { "http://www.rubyonrails.org/" }
+  end
+
+  def redirect_to_with_block_and_assigns
+    @url = "http://www.rubyonrails.org/"
+    redirect_to proc { @url }
+  end
+
+  def redirect_to_with_block_and_options
+    redirect_to proc { {:action => "hello_world"} }
+  end
+
   def rescue_errors(e) raise e end
 
   def rescue_action(e) raise end
@@ -232,7 +227,7 @@ class RedirectTest < ActionController::TestCase
 
   def test_redirect_to_record
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         resources :workshops
         match ':controller/:action'
       end
@@ -252,6 +247,31 @@ class RedirectTest < ActionController::TestCase
       get :redirect_to_nil
     end
   end
+
+  def test_redirect_to_with_block
+    get :redirect_to_with_block
+    assert_response :redirect
+    assert_redirected_to "http://www.rubyonrails.org/"
+  end
+
+  def test_redirect_to_with_block_and_assigns
+    get :redirect_to_with_block_and_assigns
+    assert_response :redirect
+    assert_redirected_to "http://www.rubyonrails.org/"
+  end
+
+  def test_redirect_to_with_block_and_accepted_options
+    with_routing do |set|
+      set.draw do
+        match ':controller/:action'
+      end
+
+      get :redirect_to_with_block_and_options
+
+      assert_response :redirect
+      assert_redirected_to "http://test.host/redirect/hello_world"
+    end
+  end
 end
 
 module ModuleTest
diff --git a/actionpack/test/controller/render_json_test.rb b/actionpack/test/controller/render_json_test.rb
index 5958b18d80..fc604a2db3 100644
--- a/actionpack/test/controller/render_json_test.rb
+++ b/actionpack/test/controller/render_json_test.rb
@@ -9,6 +9,10 @@ class RenderJsonTest < ActionController::TestCase
       hash.except!(*options[:except]) if options[:except]
       hash
     end
+
+    def to_json(options = {})
+      super :except => [:c, :e]
+    end
   end
 
   class TestController < ActionController::Base
@@ -22,6 +26,10 @@ class RenderJsonTest < ActionController::TestCase
       render :json => nil
     end
 
+    def render_json_render_to_string
+      render :text => render_to_string(:json => '[]')
+    end
+
     def render_json_hello_world
       render :json => ActiveSupport::JSON.encode(:hello => 'world')
     end
@@ -49,6 +57,10 @@ class RenderJsonTest < ActionController::TestCase
     def render_json_with_extra_options
       render :json => JsonRenderable.new, :except => [:c, :e]
     end
+
+    def render_json_without_options
+      render :json => JsonRenderable.new
+    end
   end
 
   tests TestController
@@ -68,6 +80,12 @@ class RenderJsonTest < ActionController::TestCase
     assert_equal 'application/json', @response.content_type
   end
 
+  def test_render_json_render_to_string
+    get :render_json_render_to_string
+    assert_equal '[]', @response.body
+  end
+
+
   def test_render_json
     get :render_json_hello_world
     assert_equal '{"hello":"world"}', @response.body
@@ -109,4 +127,9 @@ class RenderJsonTest < ActionController::TestCase
     assert_equal '{"a":"b"}', @response.body
     assert_equal 'application/json', @response.content_type
   end
+
+  def test_render_json_calls_to_json_from_object
+    get :render_json_without_options
+    assert_equal '{"a":"b"}', @response.body
+  end
 end
diff --git a/actionpack/test/controller/render_other_test.rb b/actionpack/test/controller/render_other_test.rb
index dfc4f2db8c..eda777e7a7 100644
--- a/actionpack/test/controller/render_other_test.rb
+++ b/actionpack/test/controller/render_other_test.rb
@@ -120,6 +120,7 @@ class RenderOtherTest < ActionController::TestCase
 
     private
       def default_render
+        @alternate_default_render ||= nil
         if @alternate_default_render
           @alternate_default_render.call
         else
@@ -224,15 +225,15 @@ class RenderOtherTest < ActionController::TestCase
     get :update_page_with_instance_variables
     assert_template nil
     assert_equal 'text/javascript; charset=utf-8', @response.headers["Content-Type"]
-    assert_match /balance/, @response.body
-    assert_match /\$37/, @response.body
+    assert_match(/balance/, @response.body)
+    assert_match(/\$37/, @response.body)
   end
 
   def test_update_page_with_view_method
     get :update_page_with_view_method
     assert_template nil
     assert_equal 'text/javascript; charset=utf-8', @response.headers["Content-Type"]
-    assert_match /2 people/, @response.body
+    assert_match(/2 people/, @response.body)
   end
 
   def test_should_render_html_formatted_partial_with_rjs
diff --git a/actionpack/test/controller/render_test.rb b/actionpack/test/controller/render_test.rb
index a57a12f271..be492152f2 100644
--- a/actionpack/test/controller/render_test.rb
+++ b/actionpack/test/controller/render_test.rb
@@ -7,7 +7,7 @@ module Fun
     # :ported:
     def hello_world
     end
-    
+
     def nested_partial_with_form_builder
       render :partial => ActionView::Helpers::FormBuilder.new(:post, nil, view_context, {}, Proc.new {})
     end
@@ -99,11 +99,6 @@ class TestController < ActionController::Base
     render :template => "test/hello_world"
   end
 
-  def render_hello_world_with_etag_set
-    response.etag = "hello_world"
-    render :template => "test/hello_world"
-  end
-
   # :ported: compatibility
   def render_hello_world_with_forward_slash
     render :template => "/test/hello_world"
@@ -130,6 +125,10 @@ class TestController < ActionController::Base
     render :action => "hello_world"
   end
 
+  def render_action_upcased_hello_world
+    render :action => "Hello_world"
+  end
+
   def render_action_hello_world_as_string
     render "hello_world"
   end
@@ -276,6 +275,7 @@ class TestController < ActionController::Base
 
   # :ported:
   def builder_layout_test
+    @name = nil
     render :action => "hello", :layout => "layouts/builder"
   end
 
@@ -327,6 +327,7 @@ class TestController < ActionController::Base
   end
 
   def default_render
+    @alternate_default_render ||= nil
     if @alternate_default_render
       @alternate_default_render.call
     else
@@ -339,14 +340,17 @@ class TestController < ActionController::Base
   end
 
   def layout_test_with_different_layout
+    @variable_for_layout = nil
     render :action => "hello_world", :layout => "standard"
   end
 
   def layout_test_with_different_layout_and_string_action
+    @variable_for_layout = nil
     render "hello_world", :layout => "standard"
   end
 
   def layout_test_with_different_layout_and_symbol_action
+    @variable_for_layout = nil
     render :hello_world, :layout => "standard"
   end
 
@@ -355,6 +359,7 @@ class TestController < ActionController::Base
   end
 
   def layout_overriding_layout
+    @variable_for_layout = nil
     render :action => "hello_world", :layout => "standard"
   end
 
@@ -488,6 +493,10 @@ class TestController < ActionController::Base
     head :x_custom_header => "something"
   end
 
+  def head_with_www_authenticate_header
+    head 'WWW-Authenticate' => 'something'
+  end
+
   def head_with_status_code_first
     head :forbidden, :x_custom_header => "something"
   end
@@ -639,6 +648,7 @@ class TestController < ActionController::Base
   private
 
     def determine_layout
+      @variable_for_layout ||= nil
       case action_name
         when "hello_world", "layout_test", "rendering_without_layout",
              "rendering_nothing_on_layout", "render_text_hello_world",
@@ -736,6 +746,12 @@ class RenderTest < ActionController::TestCase
     assert_template "test/hello_world"
   end
 
+  def test_render_action_upcased
+    assert_raise ActionView::MissingTemplate do
+      get :render_action_upcased_hello_world
+    end
+  end
+
   # :ported:
   def test_render_action_hello_world_as_string
     get :render_action_hello_world_as_string
@@ -1016,7 +1032,7 @@ class RenderTest < ActionController::TestCase
     assert_equal " ", @response.body
   end
 
-  def test_render_to_string
+  def test_render_to_string_not_deprecated
     assert_not_deprecated { get :hello_in_a_string }
     assert_equal "How's there? goodbyeHello: davidHello: marygoodbye\n", @response.body
   end
@@ -1113,20 +1129,20 @@ class RenderTest < ActionController::TestCase
 
   def test_head_with_location_header
     get :head_with_location_header
-    assert @response.body.blank?
+    assert_blank @response.body
     assert_equal "/foo", @response.headers["Location"]
     assert_response :ok
   end
 
   def test_head_with_location_object
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         resources :customers
         match ':controller/:action'
       end
 
       get :head_with_location_object
-      assert @response.body.blank?
+      assert_blank @response.body
       assert_equal "http://www.nextangle.com/customers/1", @response.headers["Location"]
       assert_response :ok
     end
@@ -1134,11 +1150,18 @@ class RenderTest < ActionController::TestCase
 
   def test_head_with_custom_header
     get :head_with_custom_header
-    assert @response.body.blank?
+    assert_blank @response.body
     assert_equal "something", @response.headers["X-Custom-Header"]
     assert_response :ok
   end
 
+  def test_head_with_www_authenticate_header
+    get :head_with_www_authenticate_header
+    assert_blank @response.body
+    assert_equal "something", @response.headers["WWW-Authenticate"]
+    assert_response :ok
+  end
+
   def test_head_with_symbolic_status
     get :head_with_symbolic_status, :status => "ok"
     assert_equal 200, @response.status
@@ -1234,7 +1257,7 @@ class RenderTest < ActionController::TestCase
     assert_match(/<label/, @response.body)
     assert_template('test/_labelling_form')
   end
-  
+
   def test_nested_partial_with_form_builder
     @controller = Fun::GamesController.new
     get :nested_partial_with_form_builder
@@ -1368,119 +1391,6 @@ class ExpiresInRenderTest < ActionController::TestCase
   end
 end
 
-
-class EtagRenderTest < ActionController::TestCase
-  tests TestController
-
-  def setup
-    super
-    @request.host = "www.nextangle.com"
-    @expected_bang_etag = etag_for(expand_key([:foo, 123]))
-  end
-
-  def test_render_blank_body_shouldnt_set_etag
-    get :blank_response
-    assert !@response.etag?
-  end
-
-  def test_render_200_should_set_etag
-    get :render_hello_world_from_variable
-    assert_equal etag_for("hello david"), @response.headers['ETag']
-    assert_equal "max-age=0, private, must-revalidate", @response.headers['Cache-Control']
-  end
-
-  def test_render_against_etag_request_should_304_when_match
-    @request.if_none_match = etag_for("hello david")
-    get :render_hello_world_from_variable
-    assert_equal 304, @response.status.to_i
-    assert @response.body.empty?
-  end
-
-  def test_render_against_etag_request_should_have_no_content_length_when_match
-    @request.if_none_match = etag_for("hello david")
-    get :render_hello_world_from_variable
-    assert !@response.headers.has_key?("Content-Length")
-  end
-
-  def test_render_against_etag_request_should_200_when_no_match
-    @request.if_none_match = etag_for("hello somewhere else")
-    get :render_hello_world_from_variable
-    assert_equal 200, @response.status.to_i
-    assert !@response.body.empty?
-  end
-
-  def test_render_should_not_set_etag_when_last_modified_has_been_specified
-    get :render_hello_world_with_last_modified_set
-    assert_equal 200, @response.status.to_i
-    assert_not_nil @response.last_modified
-    assert_nil @response.etag
-    assert @response.body.present?
-  end
-
-  def test_render_with_etag
-    get :render_hello_world_from_variable
-    expected_etag = etag_for('hello david')
-    assert_equal expected_etag, @response.headers['ETag']
-    @response = ActionController::TestResponse.new
-
-    @request.if_none_match = expected_etag
-    get :render_hello_world_from_variable
-    assert_equal 304, @response.status.to_i
-
-    @response = ActionController::TestResponse.new
-    @request.if_none_match = "\"diftag\""
-    get :render_hello_world_from_variable
-    assert_equal 200, @response.status.to_i
-  end
-
-  def render_with_404_shouldnt_have_etag
-    get :render_custom_code
-    assert_nil @response.headers['ETag']
-  end
-
-  def test_etag_should_not_be_changed_when_already_set
-    get :render_hello_world_with_etag_set
-    assert_equal etag_for("hello_world"), @response.headers['ETag']
-  end
-
-  def test_etag_should_govern_renders_with_layouts_too
-    get :builder_layout_test
-    assert_equal "<wrapper>\n<html>\n  <p>Hello </p>\n<p>This is grand!</p>\n</html>\n</wrapper>\n", @response.body
-    assert_equal etag_for("<wrapper>\n<html>\n  <p>Hello </p>\n<p>This is grand!</p>\n</html>\n</wrapper>\n"), @response.headers['ETag']
-  end
-
-  def test_etag_with_bang_should_set_etag
-    get :conditional_hello_with_bangs
-    assert_equal @expected_bang_etag, @response.headers["ETag"]
-    assert_response :success
-  end
-
-  def test_etag_with_bang_should_obey_if_none_match
-    @request.if_none_match = @expected_bang_etag
-    get :conditional_hello_with_bangs
-    assert_response :not_modified
-  end
-
-  def test_etag_with_public_true_should_set_header
-    get :conditional_hello_with_public_header
-    assert_equal "public", @response.headers['Cache-Control']
-  end
-
-  def test_etag_with_public_true_should_set_header_and_retain_other_headers
-    get :conditional_hello_with_public_header_and_expires_at
-    assert_equal "max-age=60, public", @response.headers['Cache-Control']
-  end
-
-  protected
-    def etag_for(text)
-      %("#{Digest::MD5.hexdigest(text)}")
-    end
-
-    def expand_key(args)
-      ActiveSupport::Cache.expand_cache_key(args)
-    end
-end
-
 class LastModifiedRenderTest < ActionController::TestCase
   tests TestController
 
@@ -1499,7 +1409,7 @@ class LastModifiedRenderTest < ActionController::TestCase
     @request.if_modified_since = @last_modified
     get :conditional_hello
     assert_equal 304, @response.status.to_i
-    assert @response.body.blank?, @response.body
+    assert_blank @response.body
     assert_equal @last_modified, @response.headers['Last-Modified']
   end
 
@@ -1514,7 +1424,7 @@ class LastModifiedRenderTest < ActionController::TestCase
     @request.if_modified_since = 'Thu, 16 Jul 2008 00:00:00 GMT'
     get :conditional_hello
     assert_equal 200, @response.status.to_i
-    assert !@response.body.blank?
+    assert_present @response.body
     assert_equal @last_modified, @response.headers['Last-Modified']
   end
 
diff --git a/actionpack/test/controller/render_xml_test.rb b/actionpack/test/controller/render_xml_test.rb
index 4bf867fa41..ec4dc848ff 100644
--- a/actionpack/test/controller/render_xml_test.rb
+++ b/actionpack/test/controller/render_xml_test.rb
@@ -70,10 +70,9 @@ class RenderXmlTest < ActionController::TestCase
 
   def test_rendering_with_object_location_should_set_header_with_url_for
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         resources :customers
-        # match ':controller/:action'
-        map.connect ':controller/:action/:id'
+        match ':controller/:action'
       end
 
       get :render_with_object_location
diff --git a/actionpack/test/controller/request/test_request_test.rb b/actionpack/test/controller/request/test_request_test.rb
index 0a39feb7fe..e624f11773 100644
--- a/actionpack/test/controller/request/test_request_test.rb
+++ b/actionpack/test/controller/request/test_request_test.rb
@@ -29,8 +29,7 @@ class ActionController::TestRequestTest < ActiveSupport::TestCase
   end
 
   def test_session_id_different_on_each_call
-    prev_id =
     assert_not_equal(@request.session_options[:id], ActionController::TestRequest.new.session_options[:id])
   end
 
-end
\ No newline at end of file
+end
diff --git a/actionpack/test/controller/request_forgery_protection_test.rb b/actionpack/test/controller/request_forgery_protection_test.rb
index be05ef6167..d520b5e512 100644
--- a/actionpack/test/controller/request_forgery_protection_test.rb
+++ b/actionpack/test/controller/request_forgery_protection_test.rb
@@ -1,5 +1,6 @@
 require 'abstract_unit'
 require 'digest/sha1'
+require 'active_support/core_ext/string/strip'
 
 # common controller actions
 module RequestForgeryProtectionActions
@@ -11,12 +12,28 @@ module RequestForgeryProtectionActions
     render :inline => "<%= button_to('New', '/') {} %>"
   end
 
+  def external_form
+    render :inline => "<%= form_tag('http://farfar.away/form', :authenticity_token => 'external_token') {} %>"
+  end
+
+  def external_form_without_protection
+    render :inline => "<%= form_tag('http://farfar.away/form', :authenticity_token => false) {} %>"
+  end
+
   def unsafe
     render :text => 'pwn'
   end
 
   def meta
-    render :inline => "<%= csrf_meta_tag %>"
+    render :inline => "<%= csrf_meta_tags %>"
+  end
+
+  def external_form_for
+    render :inline => "<%= form_for(:some_resource, :authenticity_token => 'external_token') {} %>"
+  end
+
+  def form_for_without_protection
+    render :inline => "<%= form_for(:some_resource, :authenticity_token => false ) {} %>"
   end
 
   def rescue_action(e) raise e end
@@ -28,6 +45,16 @@ class RequestForgeryProtectionController < ActionController::Base
   protect_from_forgery :only => %w(index meta)
 end
 
+class RequestForgeryProtectionControllerUsingOldBehaviour < ActionController::Base
+  include RequestForgeryProtectionActions
+  protect_from_forgery :only => %w(index meta)
+
+  def handle_unverified_request
+    raise(ActionController::InvalidAuthenticityToken)
+  end
+end
+
+
 class FreeCookieController < RequestForgeryProtectionController
   self.allow_forgery_protection = false
 
@@ -50,153 +77,92 @@ end
 # common test methods
 
 module RequestForgeryProtectionTests
-  def teardown
-    ActionController::Base.request_forgery_protection_token = nil
-  end
-
-
-  def test_should_render_form_with_token_tag
-     get :index
-     assert_select 'form>div>input[name=?][value=?]', 'authenticity_token', @token
-   end
-
-   def test_should_render_button_to_with_token_tag
-     get :show_button
-     assert_select 'form>div>input[name=?][value=?]', 'authenticity_token', @token
-   end
-
-   def test_should_allow_get
-     get :index
-     assert_response :success
-   end
-
-   def test_should_allow_post_without_token_on_unsafe_action
-     post :unsafe
-     assert_response :success
-   end
-
-  def test_should_not_allow_html_post_without_token
-    @request.env['CONTENT_TYPE'] = Mime::URL_ENCODED_FORM.to_s
-    assert_raise(ActionController::InvalidAuthenticityToken) { post :index, :format => :html }
-  end
-
-  def test_should_not_allow_html_put_without_token
-    @request.env['CONTENT_TYPE'] = Mime::URL_ENCODED_FORM.to_s
-    assert_raise(ActionController::InvalidAuthenticityToken) { put :index, :format => :html }
-  end
-
-  def test_should_not_allow_html_delete_without_token
-    @request.env['CONTENT_TYPE'] = Mime::URL_ENCODED_FORM.to_s
-    assert_raise(ActionController::InvalidAuthenticityToken) { delete :index, :format => :html }
-  end
+  def setup
+    @token      = "cf50faa3fe97702ca1ae"
 
-  def test_should_allow_api_formatted_post_without_token
-    assert_nothing_raised do
-      post :index, :format => 'xml'
-    end
+    ActiveSupport::SecureRandom.stubs(:base64).returns(@token)
+    ActionController::Base.request_forgery_protection_token = :authenticity_token
   end
 
-  def test_should_not_allow_api_formatted_put_without_token
-    assert_nothing_raised do
-      put :index, :format => 'xml'
-    end
-  end
 
-  def test_should_allow_api_formatted_delete_without_token
-    assert_nothing_raised do
-      delete :index, :format => 'xml'
+  def test_should_render_form_with_token_tag
+    assert_not_blocked do
+      get :index
     end
+    assert_select 'form>div>input[name=?][value=?]', 'authenticity_token', @token
   end
 
-  def test_should_not_allow_api_formatted_post_sent_as_url_encoded_form_without_token
-    assert_raise(ActionController::InvalidAuthenticityToken) do
-      @request.env['CONTENT_TYPE'] = Mime::URL_ENCODED_FORM.to_s
-      post :index, :format => 'xml'
+  def test_should_render_button_to_with_token_tag
+    assert_not_blocked do
+      get :show_button
     end
+    assert_select 'form>div>input[name=?][value=?]', 'authenticity_token', @token
   end
 
-  def test_should_not_allow_api_formatted_put_sent_as_url_encoded_form_without_token
-    assert_raise(ActionController::InvalidAuthenticityToken) do
-      @request.env['CONTENT_TYPE'] = Mime::URL_ENCODED_FORM.to_s
-      put :index, :format => 'xml'
-    end
+  def test_should_allow_get
+    assert_not_blocked { get :index }
   end
 
-  def test_should_not_allow_api_formatted_delete_sent_as_url_encoded_form_without_token
-    assert_raise(ActionController::InvalidAuthenticityToken) do
-      @request.env['CONTENT_TYPE'] = Mime::URL_ENCODED_FORM.to_s
-      delete :index, :format => 'xml'
-    end
+  def test_should_allow_post_without_token_on_unsafe_action
+    assert_not_blocked { post :unsafe }
   end
 
-  def test_should_not_allow_api_formatted_post_sent_as_multipart_form_without_token
-    assert_raise(ActionController::InvalidAuthenticityToken) do
-      @request.env['CONTENT_TYPE'] = Mime::MULTIPART_FORM.to_s
-      post :index, :format => 'xml'
-    end
+  def test_should_not_allow_post_without_token
+    assert_blocked { post :index }
   end
 
-  def test_should_not_allow_api_formatted_put_sent_as_multipart_form_without_token
-    assert_raise(ActionController::InvalidAuthenticityToken) do
-      @request.env['CONTENT_TYPE'] = Mime::MULTIPART_FORM.to_s
-      put :index, :format => 'xml'
-    end
+  def test_should_not_allow_post_without_token_irrespective_of_format
+    assert_blocked { post :index, :format=>'xml' }
   end
 
-  def test_should_not_allow_api_formatted_delete_sent_as_multipart_form_without_token
-    assert_raise(ActionController::InvalidAuthenticityToken) do
-      @request.env['CONTENT_TYPE'] = Mime::MULTIPART_FORM.to_s
-      delete :index, :format => 'xml'
-    end
+  def test_should_not_allow_put_without_token
+    assert_blocked { put :index }
   end
 
-  def test_should_allow_xhr_post_without_token
-    assert_nothing_raised { xhr :post, :index }
+  def test_should_not_allow_delete_without_token
+    assert_blocked { delete :index }
   end
 
-  def test_should_allow_xhr_put_without_token
-    assert_nothing_raised { xhr :put, :index }
+  def test_should_not_allow_xhr_post_without_token
+    assert_blocked { xhr :post, :index }
   end
 
-  def test_should_allow_xhr_delete_without_token
-    assert_nothing_raised { xhr :delete, :index }
+  def test_should_allow_post_with_token
+    assert_not_blocked { post :index, :authenticity_token => @token }
   end
 
-  def test_should_allow_xhr_post_with_encoded_form_content_type_without_token
-    @request.env['CONTENT_TYPE'] = Mime::URL_ENCODED_FORM.to_s
-    assert_nothing_raised { xhr :post, :index }
+  def test_should_allow_put_with_token
+    assert_not_blocked { put :index, :authenticity_token => @token }
   end
 
-  def test_should_allow_post_with_token
-    post :index, :authenticity_token => @token
-    assert_response :success
+  def test_should_allow_delete_with_token
+    assert_not_blocked { delete :index, :authenticity_token => @token }
   end
 
-  def test_should_allow_put_with_token
-    put :index, :authenticity_token => @token
-    assert_response :success
+  def test_should_allow_post_with_token_in_header
+    @request.env['HTTP_X_CSRF_TOKEN'] = @token
+    assert_not_blocked { post :index }
   end
 
-  def test_should_allow_delete_with_token
-    delete :index, :authenticity_token => @token
-    assert_response :success
+  def test_should_allow_delete_with_token_in_header
+    @request.env['HTTP_X_CSRF_TOKEN'] = @token
+    assert_not_blocked { delete :index }
   end
 
-  def test_should_allow_post_with_xml
-    @request.env['CONTENT_TYPE'] = Mime::XML.to_s
-    post :index, :format => 'xml'
-    assert_response :success
+  def test_should_allow_put_with_token_in_header
+    @request.env['HTTP_X_CSRF_TOKEN'] = @token
+    assert_not_blocked { put :index }
   end
 
-  def test_should_allow_put_with_xml
-    @request.env['CONTENT_TYPE'] = Mime::XML.to_s
-    put :index, :format => 'xml'
+  def assert_blocked
+    session[:something_like_user_id] = 1
+    yield
+    assert_nil session[:something_like_user_id], "session values are still present"
     assert_response :success
   end
 
-  def test_should_allow_delete_with_xml
-    @request.env['CONTENT_TYPE'] = Mime::XML.to_s
-    delete :index, :format => 'xml'
+  def assert_not_blocked
+    assert_nothing_raised { yield }
     assert_response :success
   end
 end
@@ -205,21 +171,23 @@ end
 
 class RequestForgeryProtectionControllerTest < ActionController::TestCase
   include RequestForgeryProtectionTests
-  def setup
-    @controller = RequestForgeryProtectionController.new
-    @request    = ActionController::TestRequest.new
-    @request.format = :html
-    @response   = ActionController::TestResponse.new
-    @token      = "cf50faa3fe97702ca1ae"
-
-    ActiveSupport::SecureRandom.stubs(:base64).returns(@token)
-    ActionController::Base.request_forgery_protection_token = :authenticity_token
-  end
 
   test 'should emit a csrf-token meta tag' do
     ActiveSupport::SecureRandom.stubs(:base64).returns(@token + '<=?')
     get :meta
-    assert_equal %(<meta name="csrf-param" content="authenticity_token"/>\n<meta name="csrf-token" content="cf50faa3fe97702ca1ae&lt;=?"/>), @response.body
+    assert_equal <<-METAS.strip_heredoc.chomp, @response.body
+      <meta name="csrf-param" content="authenticity_token"/>
+      <meta name="csrf-token" content="cf50faa3fe97702ca1ae&lt;=?"/>
+    METAS
+  end
+end
+
+class RequestForgeryProtectionControllerUsingOldBehaviourTest < ActionController::TestCase
+  include RequestForgeryProtectionTests
+  def assert_blocked
+    assert_raises(ActionController::InvalidAuthenticityToken) do
+      yield
+    end
   end
 end
 
@@ -251,17 +219,27 @@ class FreeCookieControllerTest < ActionController::TestCase
 
   test 'should not emit a csrf-token meta tag' do
     get :meta
-    assert @response.body.blank?
+    assert_blank @response.body
   end
 end
 
+
+
+
+
 class CustomAuthenticityParamControllerTest < ActionController::TestCase
   def setup
+    ActionController::Base.request_forgery_protection_token = :custom_token_name
+    super
+  end
+
+  def teardown
     ActionController::Base.request_forgery_protection_token = :authenticity_token
+    super
   end
 
   def test_should_allow_custom_token
-    post :index, :authenticity_token => 'foobar'
+    post :index, :custom_token_name => 'foobar'
     assert_response :ok
   end
 end
diff --git a/actionpack/test/controller/rescue_test.rb b/actionpack/test/controller/rescue_test.rb
index a24de62b19..c445285538 100644
--- a/actionpack/test/controller/rescue_test.rb
+++ b/actionpack/test/controller/rescue_test.rb
@@ -1,19 +1,5 @@
 require 'abstract_unit'
 
-module ActionDispatch
-  class ShowExceptions
-    private
-      def public_path
-        "#{FIXTURE_LOAD_PATH}/public"
-      end
-
-      # Silence logger
-      def logger
-        nil
-      end
-  end
-end
-
 class RescueController < ActionController::Base
   class NotAuthorized < StandardError
   end
@@ -149,7 +135,7 @@ class RescueController < ActionController::Base
 
   def missing_template
   end
-  
+
   def io_error_in_view
     raise ActionView::TemplateError.new(nil, {}, IOError.new('this is io error'))
   end
@@ -311,7 +297,7 @@ class RescueControllerTest < ActionController::TestCase
   end
 end
 
-class RescueTest < ActionController::IntegrationTest
+class RescueTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     class RecordInvalid < StandardError
       def message
@@ -371,7 +357,7 @@ class RescueTest < ActionController::IntegrationTest
   private
     def with_test_routing
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match 'foo', :to => ::RescueTest::TestController.action(:foo)
           match 'invalid', :to => ::RescueTest::TestController.action(:invalid)
           match 'b00m', :to => ::RescueTest::TestController.action(:b00m)
diff --git a/actionpack/test/controller/resources_test.rb b/actionpack/test/controller/resources_test.rb
index 6c8f470fba..acb4617a60 100644
--- a/actionpack/test/controller/resources_test.rb
+++ b/actionpack/test/controller/resources_test.rb
@@ -1,5 +1,6 @@
-require 'active_support/core_ext/object/try'
 require 'abstract_unit'
+require 'active_support/core_ext/object/try'
+require 'active_support/core_ext/object/with_options'
 
 class ResourcesController < ActionController::Base
   def index() render :nothing => true end
@@ -32,36 +33,6 @@ module Backoffice
 end
 
 class ResourcesTest < ActionController::TestCase
-  def test_should_arrange_actions
-    resource = ActionDispatch::Routing::DeprecatedMapper::Resource.new(:messages, {
-      :collection => { :rss => :get, :reorder => :post, :csv => :post },
-      :member     => { :rss => :get, :atom => :get, :upload => :post, :fix => :post },
-      :new        => { :preview => :get, :draft => :get }}, {})
-
-    assert_resource_methods [:rss],                   resource, :collection, :get
-    assert_resource_methods [:csv, :reorder],         resource, :collection, :post
-    assert_resource_methods [:edit, :rss, :atom],     resource, :member,     :get
-    assert_resource_methods [:upload, :fix],          resource, :member,     :post
-    assert_resource_methods [:new, :preview, :draft], resource, :new,        :get
-  end
-
-  def test_should_resource_controller_name_equal_resource_name_by_default
-    resource = ActionDispatch::Routing::DeprecatedMapper::Resource.new(:messages, {}, {})
-    assert_equal 'messages', resource.controller
-  end
-
-  def test_should_resource_controller_name_equal_controller_option
-    resource = ActionDispatch::Routing::DeprecatedMapper::Resource.new(:messages, {:controller => 'posts'}, {})
-    assert_equal 'posts', resource.controller
-  end
-
-  def test_should_all_singleton_paths_be_the_same
-    [ :path, :nesting_path_prefix, :member_path ].each do |method|
-      resource = ActionDispatch::Routing::DeprecatedMapper::SingletonResource.new(:messages, {:path_prefix => 'admin'}, {})
-      assert_equal 'admin/messages', resource.send(method)
-    end
-  end
-
   def test_default_restful_routes
     with_restful_routing :messages do
       assert_simply_restful_for :messages
@@ -69,9 +40,9 @@ class ResourcesTest < ActionController::TestCase
   end
 
   def test_override_paths_for_member_and_collection_methods
-    collection_methods = { 'rss' => :get, 'reorder' => :post, 'csv' => :post }
-    member_methods    = { 'rss' => :get, :atom => :get, :upload => :post, :fix => :post }
-    path_names = {:new => 'nuevo', 'rss' => 'canal', :fix => 'corrigir' }
+    collection_methods = { :rss => :get, :reorder => :post, :csv => :post }
+    member_methods    = { :rss => :get, :atom => :get, :upload => :post, :fix => :post }
+    path_names = {:new => 'nuevo', :rss => 'canal', :fix => 'corrigir' }
 
     with_restful_routing :messages,
         :collection => collection_methods,
@@ -89,7 +60,7 @@ class ResourcesTest < ActionController::TestCase
         end
 
         collection_methods.each do |action, method|
-          assert_recognizes(options.merge(:action => action),
+          assert_recognizes(options.merge(:action => action.to_s),
             :path => "/messages/#{path_names[action] || action}",
             :method => method)
         end
@@ -112,12 +83,6 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  def test_override_paths_for_default_restful_actions
-    resource = ActionDispatch::Routing::DeprecatedMapper::Resource.new(:messages, {
-      :path_names => {:new => 'nuevo', :edit => 'editar'}}, {})
-    assert_equal resource.new_path, "#{resource.path}/nuevo"
-  end
-
   def test_multiple_default_restful_routes
     with_restful_routing :messages, :comments do
       assert_simply_restful_for :messages
@@ -131,7 +96,7 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  def test_irregular_id_with_no_requirements_should_raise_error
+  def test_irregular_id_with_no_constraints_should_raise_error
     expected_options = {:controller => 'messages', :action => 'show', :id => '1.1.1'}
 
     with_restful_routing :messages do
@@ -141,25 +106,25 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  def test_irregular_id_with_requirements_should_pass
+  def test_irregular_id_with_constraints_should_pass
     expected_options = {:controller => 'messages', :action => 'show', :id => '1.1.1'}
 
-    with_restful_routing(:messages, :requirements => {:id => /[0-9]\.[0-9]\.[0-9]/}) do
+    with_restful_routing(:messages, :constraints => {:id => /[0-9]\.[0-9]\.[0-9]/}) do
       assert_recognizes(expected_options, :path => 'messages/1.1.1', :method => :get)
     end
   end
 
-  def test_with_path_prefix_requirements
+  def test_with_path_prefix_constraints
     expected_options = {:controller => 'messages', :action => 'show', :thread_id => '1.1.1', :id => '1'}
-    with_restful_routing :messages, :path_prefix => '/thread/:thread_id', :requirements => {:thread_id => /[0-9]\.[0-9]\.[0-9]/} do
+    with_restful_routing :messages, :path_prefix => '/thread/:thread_id', :constraints => {:thread_id => /[0-9]\.[0-9]\.[0-9]/} do
       assert_recognizes(expected_options, :path => 'thread/1.1.1/messages/1', :method => :get)
     end
   end
 
-  def test_irregular_id_requirements_should_get_passed_to_member_actions
+  def test_irregular_id_constraints_should_get_passed_to_member_actions
     expected_options = {:controller => 'messages', :action => 'custom', :id => '1.1.1'}
 
-    with_restful_routing(:messages, :member => {:custom => :get}, :requirements => {:id => /[0-9]\.[0-9]\.[0-9]/}) do
+    with_restful_routing(:messages, :member => {:custom => :get}, :constraints => {:id => /[0-9]\.[0-9]\.[0-9]/}) do
       assert_recognizes(expected_options, :path => 'messages/1.1.1/custom', :method => :get)
     end
   end
@@ -178,7 +143,7 @@ class ResourcesTest < ActionController::TestCase
   end
 
   def test_with_name_prefix
-    with_restful_routing :messages, :name_prefix => 'post_' do
+    with_restful_routing :messages, :as => 'post_messages' do
       assert_simply_restful_for :messages, :name_prefix => 'post_'
     end
   end
@@ -186,7 +151,16 @@ class ResourcesTest < ActionController::TestCase
   def test_with_collection_actions
     actions = { 'a' => :get, 'b' => :put, 'c' => :post, 'd' => :delete }
 
-    with_restful_routing :messages, :collection => actions do
+    with_routing do |set|
+      set.draw do
+        resources :messages do
+          get    :a, :on => :collection
+          put    :b, :on => :collection
+          post   :c, :on => :collection
+          delete :d, :on => :collection
+        end
+      end
+
       assert_restful_routes_for :messages do |options|
         actions.each do |action, method|
           assert_recognizes(options.merge(:action => action), :path => "/messages/#{action}", :method => method)
@@ -204,7 +178,18 @@ class ResourcesTest < ActionController::TestCase
   def test_with_collection_actions_and_name_prefix
     actions = { 'a' => :get, 'b' => :put, 'c' => :post, 'd' => :delete }
 
-    with_restful_routing :messages, :path_prefix => '/threads/:thread_id', :name_prefix => "thread_", :collection => actions do
+    with_routing do |set|
+      set.draw do
+        scope '/threads/:thread_id' do
+          resources :messages, :as => 'thread_messages' do
+            get    :a, :on => :collection
+            put    :b, :on => :collection
+            post   :c, :on => :collection
+            delete :d, :on => :collection
+          end
+        end
+      end
+
       assert_restful_routes_for :messages, :path_prefix => 'threads/1/', :name_prefix => 'thread_', :options => { :thread_id => '1' } do |options|
         actions.each do |action, method|
           assert_recognizes(options.merge(:action => action), :path => "/threads/1/messages/#{action}", :method => method)
@@ -222,7 +207,16 @@ class ResourcesTest < ActionController::TestCase
   def test_with_collection_actions_and_name_prefix_and_member_action_with_same_name
     actions = { 'a' => :get }
 
-    with_restful_routing :messages, :path_prefix => '/threads/:thread_id', :name_prefix => "thread_", :collection => actions, :member => actions do
+    with_routing do |set|
+      set.draw do
+        scope '/threads/:thread_id' do
+          resources :messages, :as => 'thread_messages' do
+            get :a, :on => :collection
+            get :a, :on => :member
+          end
+        end
+      end
+
       assert_restful_routes_for :messages, :path_prefix => 'threads/1/', :name_prefix => 'thread_', :options => { :thread_id => '1' } do |options|
         actions.each do |action, method|
           assert_recognizes(options.merge(:action => action), :path => "/threads/1/messages/#{action}", :method => method)
@@ -240,7 +234,18 @@ class ResourcesTest < ActionController::TestCase
   def test_with_collection_action_and_name_prefix_and_formatted
     actions = { 'a' => :get, 'b' => :put, 'c' => :post, 'd' => :delete }
 
-    with_restful_routing :messages, :path_prefix => '/threads/:thread_id', :name_prefix => "thread_", :collection => actions do
+    with_routing do |set|
+      set.draw do
+        scope '/threads/:thread_id' do
+          resources :messages, :as => 'thread_messages' do
+            get    :a, :on => :collection
+            put    :b, :on => :collection
+            post   :c, :on => :collection
+            delete :d, :on => :collection
+          end
+        end
+      end
+
       assert_restful_routes_for :messages, :path_prefix => 'threads/1/', :name_prefix => 'thread_', :options => { :thread_id => '1' } do |options|
         actions.each do |action, method|
           assert_recognizes(options.merge(:action => action, :format => 'xml'), :path => "/threads/1/messages/#{action}.xml", :method => method)
@@ -274,7 +279,7 @@ class ResourcesTest < ActionController::TestCase
   def test_with_member_action_and_requirement
     expected_options = {:controller => 'messages', :action => 'mark', :id => '1.1.1'}
 
-    with_restful_routing(:messages, :requirements => {:id => /[0-9]\.[0-9]\.[0-9]/}, :member => { :mark => :get }) do
+    with_restful_routing(:messages, :constraints => {:id => /[0-9]\.[0-9]\.[0-9]/}, :member => { :mark => :get }) do
       assert_recognizes(expected_options, :path => 'messages/1.1.1/mark', :method => :get)
     end
   end
@@ -296,31 +301,18 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  # def test_member_when_changed_default_restful_actions_and_path_names_not_specified
-  #   default_path_names = ActionController::Base.resources_path_names
-  #   ActionController::Base.resources_path_names = {:new => 'nuevo', :edit => 'editar'}
-  #
-  #   with_restful_routing :messages do
-  #     new_options = { :action => 'new', :controller => 'messages' }
-  #     new_path = "/messages/nuevo"
-  #     edit_options = { :action => 'edit', :id => '1', :controller => 'messages' }
-  #     edit_path = "/messages/1/editar"
-  #
-  #     assert_restful_routes_for :messages do |options|
-  #       assert_recognizes(options.merge(new_options), :path => new_path, :method => :get)
-  #     end
-  #
-  #     assert_restful_routes_for :messages do |options|
-  #       assert_recognizes(options.merge(edit_options), :path => edit_path, :method => :get)
-  #     end
-  #   end
-  # ensure
-  #   ActionController::Base.resources_path_names = default_path_names
-  # end
-
   def test_with_two_member_actions_with_same_method
     [:put, :post].each do |method|
-      with_restful_routing :messages, :member => { :mark => method, :unmark => method } do
+      with_routing do |set|
+        set.draw do
+          resources :messages do
+            member do
+              match :mark  , :via => method
+              match :unmark, :via => method
+            end
+          end
+        end
+
         %w(mark unmark).each do |action|
           action_options = {:action => action, :id => '1'}
           action_path    = "/messages/1/#{action}"
@@ -337,7 +329,19 @@ class ResourcesTest < ActionController::TestCase
   end
 
   def test_array_as_collection_or_member_method_value
-    with_restful_routing :messages, :collection => { :search => [:get, :post] }, :member => { :toggle => [:get, :post] } do
+    with_routing do |set|
+      set.draw do
+        resources :messages do
+          collection do
+            match :search, :via => [:post, :get]
+          end
+
+          member do
+            match :toggle, :via => [:post, :get]
+          end
+        end
+      end
+
       assert_restful_routes_for :messages do |options|
         [:get, :post].each do |method|
           assert_recognizes(options.merge(:action => 'search'), :path => "/messages/search", :method => method)
@@ -350,7 +354,13 @@ class ResourcesTest < ActionController::TestCase
   end
 
   def test_with_new_action
-    with_restful_routing :messages, :new => { :preview => :post } do
+    with_routing do |set|
+      set.draw do
+        resources :messages do
+          post :preview, :on => :new
+        end
+      end
+
       preview_options = {:action => 'preview'}
       preview_path    = "/messages/new/preview"
       assert_restful_routes_for :messages do |options|
@@ -364,7 +374,15 @@ class ResourcesTest < ActionController::TestCase
   end
 
   def test_with_new_action_with_name_prefix
-    with_restful_routing :messages, :new => { :preview => :post }, :path_prefix => '/threads/:thread_id', :name_prefix => 'thread_' do
+    with_routing do |set|
+      set.draw do
+        scope('/threads/:thread_id') do
+          resources :messages, :as => "thread_messages" do
+            post :preview, :on => :new
+          end
+        end
+      end
+
       preview_options = {:action => 'preview', :thread_id => '1'}
       preview_path    = "/threads/1/messages/new/preview"
       assert_restful_routes_for :messages, :path_prefix => 'threads/1/', :name_prefix => 'thread_', :options => { :thread_id => '1' } do |options|
@@ -378,7 +396,15 @@ class ResourcesTest < ActionController::TestCase
   end
 
   def test_with_formatted_new_action_with_name_prefix
-    with_restful_routing :messages, :new => { :preview => :post }, :path_prefix => '/threads/:thread_id', :name_prefix => 'thread_' do
+    with_routing do |set|
+      set.draw do
+        scope('/threads/:thread_id') do
+          resources :messages, :as => "thread_messages" do
+            post :preview, :on => :new
+          end
+        end
+      end
+
       preview_options = {:action => 'preview', :thread_id => '1', :format => 'xml'}
       preview_path    = "/threads/1/messages/new/preview.xml"
       assert_restful_routes_for :messages, :path_prefix => 'threads/1/', :name_prefix => 'thread_', :options => { :thread_id => '1' } do |options|
@@ -401,7 +427,13 @@ class ResourcesTest < ActionController::TestCase
       end
     end
 
-    with_restful_routing :messages, :new => { :new => :any } do
+    with_routing do |set|
+      set.draw do
+        resources :messages do
+          match :new, :via => [:post, :get], :on => :new
+        end
+      end
+
       assert_restful_routes_for :messages do |options|
         assert_recognizes(options.merge(:action => "new"), :path => "/messages/new", :method => :post)
         assert_recognizes(options.merge(:action => "new"), :path => "/messages/new", :method => :get)
@@ -411,10 +443,10 @@ class ResourcesTest < ActionController::TestCase
 
   def test_nested_restful_routes
     with_routing do |set|
-      set.draw do |map|
-        map.resources :threads do |map|
-          map.resources :messages do |map|
-            map.resources :comments
+      set.draw do
+        resources :threads do
+          resources :messages do
+            resources :comments
           end
         end
       end
@@ -431,32 +463,12 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  def test_nested_restful_routes_with_overwritten_defaults
-    with_routing do |set|
-      set.draw do |map|
-        map.resources :threads do |map|
-          map.resources :messages, :name_prefix => nil do |map|
-            map.resources :comments, :name_prefix => nil
-          end
-        end
-      end
-
-      assert_simply_restful_for :threads
-      assert_simply_restful_for :messages,
-        :path_prefix => 'threads/1/',
-        :options => { :thread_id => '1' }
-      assert_simply_restful_for :comments,
-        :path_prefix => 'threads/1/messages/2/',
-        :options => { :thread_id => '1', :message_id => '2' }
-    end
-  end
-
   def test_shallow_nested_restful_routes
     with_routing do |set|
-      set.draw do |map|
-        map.resources :threads, :shallow => true do |map|
-          map.resources :messages do |map|
-            map.resources :comments
+      set.draw do
+        resources :threads, :shallow => true do
+          resources :messages do
+            resources :comments
           end
         end
       end
@@ -478,11 +490,11 @@ class ResourcesTest < ActionController::TestCase
 
   def test_shallow_nested_restful_routes_with_namespaces
     with_routing do |set|
-      set.draw do |map|
-        map.namespace :backoffice do |map|
-          map.namespace :admin do |map|
-            map.resources :products, :shallow => true do |map|
-              map.resources :images
+      set.draw do
+        namespace :backoffice do
+          namespace :admin do
+            resources :products, :shallow => true do
+              resources :images
             end
           end
         end
@@ -531,9 +543,9 @@ class ResourcesTest < ActionController::TestCase
 
   def test_should_create_nested_singleton_resource_routes
     with_routing do |set|
-      set.draw do |map|
-        map.resource :admin, :controller => 'admin' do |admin|
-          admin.resource :account
+      set.draw do
+        resource :admin, :controller => 'admin' do
+          resource :account
         end
       end
 
@@ -542,69 +554,15 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  def test_resource_has_many_should_become_nested_resources
-    with_routing do |set|
-      set.draw do |map|
-        map.resources :messages, :has_many => [ :comments, :authors ]
-      end
-
-      assert_simply_restful_for :messages
-      assert_simply_restful_for :comments, :name_prefix => "message_", :path_prefix => 'messages/1/', :options => { :message_id => '1' }
-      assert_simply_restful_for :authors,  :name_prefix => "message_", :path_prefix => 'messages/1/', :options => { :message_id => '1' }
-    end
-  end
-
-  def test_resources_has_many_hash_should_become_nested_resources
-    with_routing do |set|
-      set.draw do |map|
-        map.resources :threads, :has_many => { :messages => [ :comments, { :authors => :threads } ] }
-      end
-
-      assert_simply_restful_for :threads
-      assert_simply_restful_for :messages, :name_prefix => "thread_", :path_prefix => 'threads/1/', :options => { :thread_id => '1' }
-      assert_simply_restful_for :comments, :name_prefix => "thread_message_", :path_prefix => 'threads/1/messages/1/', :options => { :thread_id => '1', :message_id => '1' }
-      assert_simply_restful_for :authors,  :name_prefix => "thread_message_", :path_prefix => 'threads/1/messages/1/', :options => { :thread_id => '1', :message_id => '1' }
-      assert_simply_restful_for :threads,  :name_prefix => "thread_message_author_", :path_prefix => 'threads/1/messages/1/authors/1/', :options => { :thread_id => '1', :message_id => '1', :author_id => '1' }
-    end
-  end
-
-  def test_shallow_resource_has_many_should_become_shallow_nested_resources
-    with_routing do |set|
-      set.draw do |map|
-        map.resources :messages, :has_many => [ :comments, :authors ], :shallow => true
-      end
-
-      assert_simply_restful_for :messages, :shallow => true
-      assert_simply_restful_for :comments, :name_prefix => "message_", :path_prefix => 'messages/1/', :shallow => true, :options => { :message_id => '1' }
-      assert_simply_restful_for :authors,  :name_prefix => "message_", :path_prefix => 'messages/1/', :shallow => true, :options => { :message_id => '1' }
-    end
-  end
-
-  def test_resource_has_one_should_become_nested_resources
-    with_routing do |set|
-      set.draw do |map|
-        map.resources :messages, :has_one => :logo
-      end
-
-      assert_simply_restful_for :messages
-      assert_singleton_restful_for :logo, :name_prefix => 'message_', :path_prefix => 'messages/1/', :options => { :message_id => '1' }
-    end
-  end
-
-  def test_shallow_resource_has_one_should_become_shallow_nested_resources
-    with_routing do |set|
-      set.draw do |map|
-        map.resources :messages, :has_one => :logo, :shallow => true
-      end
-
-      assert_simply_restful_for :messages, :shallow => true
-      assert_singleton_restful_for :logo, :name_prefix => 'message_', :path_prefix => 'messages/1/', :shallow => true, :options => { :message_id => '1' }
-    end
-  end
-
   def test_singleton_resource_with_member_action
     [:put, :post].each do |method|
-      with_singleton_resources :account, :member => { :reset => method } do
+      with_routing do |set|
+        set.draw do
+          resource :account do
+            match :reset, :on => :member, :via => method
+          end
+        end
+
         reset_options = {:action => 'reset'}
         reset_path    = "/account/reset"
         assert_singleton_routes_for :account do |options|
@@ -620,7 +578,14 @@ class ResourcesTest < ActionController::TestCase
 
   def test_singleton_resource_with_two_member_actions_with_same_method
     [:put, :post].each do |method|
-      with_singleton_resources :account, :member => { :reset => method, :disable => method } do
+      with_routing do |set|
+        set.draw do
+          resource :account do
+            match :reset, :on => :member, :via => method
+            match :disable, :on => :member, :via => method
+          end
+        end
+
         %w(reset disable).each do |action|
           action_options = {:action => action}
           action_path    = "/account/#{action}"
@@ -638,9 +603,9 @@ class ResourcesTest < ActionController::TestCase
 
   def test_should_nest_resources_in_singleton_resource
     with_routing do |set|
-      set.draw do |map|
-        map.resource :account do |account|
-          account.resources :messages
+      set.draw do
+        resource :account do
+          resources :messages
         end
       end
 
@@ -649,11 +614,13 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  def test_should_nest_resources_in_singleton_resource_with_path_prefix
+  def test_should_nest_resources_in_singleton_resource_with_path_scope
     with_routing do |set|
-      set.draw do |map|
-        map.resource(:account, :path_prefix => ':site_id') do |account|
-          account.resources :messages
+      set.draw do
+        scope ':site_id' do
+          resource(:account) do
+            resources :messages
+          end
         end
       end
 
@@ -664,9 +631,9 @@ class ResourcesTest < ActionController::TestCase
 
   def test_should_nest_singleton_resource_in_resources
     with_routing do |set|
-      set.draw do |map|
-        map.resources :threads do |thread|
-          thread.resource :admin, :controller => 'admin'
+      set.draw do
+        resources :threads do
+          resource :admin, :controller => 'admin'
         end
       end
 
@@ -691,52 +658,18 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  def test_should_not_allow_invalid_head_method_for_member_routes
-    with_routing do |set|
-      assert_raise(ArgumentError) do
-        set.draw do |map|
-          map.resources :messages, :member => {:something => :head}
-        end
-      end
-    end
-  end
-
-  def test_should_not_allow_invalid_http_methods_for_member_routes
+  def test_new_style_named_routes_for_resource
     with_routing do |set|
-      assert_raise(ArgumentError) do
-        set.draw do |map|
-          map.resources :messages, :member => {:something => :invalid}
+      set.draw do
+        scope '/threads/:thread_id' do
+          resources :messages, :as => 'thread_messages' do
+            get :search, :on => :collection
+            match :preview, :on => :new
+          end
         end
       end
-    end
-  end
-
-  def test_resource_action_separator
-    with_routing do |set|
-      set.draw do |map|
-        map.resources :messages, :collection => {:search => :get}, :new => {:preview => :any}, :name_prefix => 'thread_', :path_prefix => '/threads/:thread_id'
-        map.resource :account, :member => {:login => :get}, :new => {:preview => :any}, :name_prefix => 'admin_', :path_prefix => '/admin'
-      end
-
-      action_separator = ActionController::Base.resource_action_separator
 
       assert_simply_restful_for :messages, :name_prefix => 'thread_', :path_prefix => 'threads/1/', :options => { :thread_id => '1' }
-      assert_named_route "/threads/1/messages#{action_separator}search", "search_thread_messages_path", {}
-      assert_named_route "/threads/1/messages/new", "new_thread_message_path", {}
-      assert_named_route "/threads/1/messages/new#{action_separator}preview", "preview_new_thread_message_path", {}
-      assert_singleton_restful_for :account, :name_prefix => 'admin_', :path_prefix => 'admin/'
-      assert_named_route "/admin/account#{action_separator}login", "login_admin_account_path", {}
-      assert_named_route "/admin/account/new", "new_admin_account_path", {}
-      assert_named_route "/admin/account/new#{action_separator}preview", "preview_new_admin_account_path", {}
-    end
-  end
-
-  def test_new_style_named_routes_for_resource
-    with_routing do |set|
-      set.draw do |map|
-        map.resources :messages, :collection => {:search => :get}, :new => {:preview => :any}, :name_prefix => 'thread_', :path_prefix => '/threads/:thread_id'
-      end
-      assert_simply_restful_for :messages, :name_prefix => 'thread_', :path_prefix => 'threads/1/', :options => { :thread_id => '1' }
       assert_named_route "/threads/1/messages/search", "search_thread_messages_path", {}
       assert_named_route "/threads/1/messages/new", "new_thread_message_path", {}
       assert_named_route "/threads/1/messages/new/preview", "preview_new_thread_message_path", {}
@@ -745,8 +678,13 @@ class ResourcesTest < ActionController::TestCase
 
   def test_new_style_named_routes_for_singleton_resource
     with_routing do |set|
-      set.draw do |map|
-        map.resource :account, :member => {:login => :get}, :new => {:preview => :any}, :name_prefix => 'admin_', :path_prefix => '/admin'
+      set.draw do
+        scope '/admin' do
+          resource :account, :as => :admin_account do
+            get :login, :on => :member
+            match :preview, :on => :new
+          end
+        end
       end
       assert_singleton_restful_for :account, :name_prefix => 'admin_', :path_prefix => 'admin/'
       assert_named_route "/admin/account/login", "login_admin_account_path", {}
@@ -757,48 +695,22 @@ class ResourcesTest < ActionController::TestCase
 
   def test_resources_in_namespace
     with_routing do |set|
-      set.draw do |map|
-        map.namespace :backoffice do |backoffice|
-          backoffice.resources :products
-        end
-      end
-
-      assert_simply_restful_for :products, :controller => "backoffice/products", :name_prefix => 'backoffice_', :path_prefix => 'backoffice/'
-    end
-  end
-
-  def test_resource_has_many_in_namespace
-    with_routing do |set|
-      set.draw do |map|
-        map.namespace :backoffice do |backoffice|
-          backoffice.resources :products, :has_many => :tags
-        end
-      end
-
-      assert_simply_restful_for :products,  :controller => "backoffice/products", :name_prefix => 'backoffice_',          :path_prefix => 'backoffice/'
-      assert_simply_restful_for :tags,      :controller => "backoffice/tags",     :name_prefix => "backoffice_product_",  :path_prefix => 'backoffice/products/1/', :options => { :product_id => '1' }
-    end
-  end
-
-  def test_resource_has_one_in_namespace
-    with_routing do |set|
-      set.draw do |map|
-        map.namespace :backoffice do |backoffice|
-          backoffice.resources :products, :has_one => :manufacturer
+      set.draw do
+        namespace :backoffice do
+          resources :products
         end
       end
 
       assert_simply_restful_for :products, :controller => "backoffice/products", :name_prefix => 'backoffice_', :path_prefix => 'backoffice/'
-      assert_singleton_restful_for :manufacturer, :controller => "backoffice/manufacturers", :name_prefix => 'backoffice_product_', :path_prefix => 'backoffice/products/1/', :options => { :product_id => '1' }
     end
   end
 
   def test_resources_in_nested_namespace
     with_routing do |set|
-      set.draw do |map|
-        map.namespace :backoffice do |backoffice|
-          backoffice.namespace :admin do |admin|
-            admin.resources :products
+      set.draw do
+        namespace :backoffice do
+          namespace :admin do
+            resources :products
           end
         end
       end
@@ -809,8 +721,10 @@ class ResourcesTest < ActionController::TestCase
 
   def test_resources_using_namespace
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :namespace => "backoffice/"
+      set.draw do
+        namespace :backoffice, :path => nil, :as => nil do
+          resources :products
+        end
       end
 
       assert_simply_restful_for :products, :controller => "backoffice/products"
@@ -819,10 +733,10 @@ class ResourcesTest < ActionController::TestCase
 
   def test_nested_resources_using_namespace
     with_routing do |set|
-      set.draw do |map|
-        map.namespace :backoffice do |backoffice|
-          backoffice.resources :products do |products|
-            products.resources :images
+      set.draw do
+        namespace :backoffice do
+          resources :products do
+            resources :images
           end
         end
       end
@@ -833,11 +747,11 @@ class ResourcesTest < ActionController::TestCase
 
   def test_nested_resources_in_nested_namespace
     with_routing do |set|
-      set.draw do |map|
-        map.namespace :backoffice do |backoffice|
-          backoffice.namespace :admin do |admin|
-            admin.resources :products do |products|
-              products.resources :images
+      set.draw do
+        namespace :backoffice do
+          namespace :admin do
+            resources :products do
+              resources :images
             end
           end
         end
@@ -854,21 +768,24 @@ class ResourcesTest < ActionController::TestCase
       assert_recognizes({:controller => "messages", :action => "index"}, "/messages/")
     end
 
-     with_restful_routing :messages, :as => 'reviews' do
-       assert_simply_restful_for :messages, :as => 'reviews'
-      assert_recognizes({:controller => "messages", :action => "index"}, "/reviews")
-      assert_recognizes({:controller => "messages", :action => "index"}, "/reviews/")
+     with_routing do |set|
+        set.draw do
+          resources :messages, :path => 'reviews'
+        end
+        assert_simply_restful_for :messages, :as => 'reviews'
+        assert_recognizes({:controller => "messages", :action => "index"}, "/reviews")
+        assert_recognizes({:controller => "messages", :action => "index"}, "/reviews/")
      end
   end
 
   def test_multiple_with_path_segment_and_controller
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products do |products|
-          products.resources :product_reviews, :as => 'reviews', :controller => 'messages'
+      set.draw do
+       resources :products do
+          resources :product_reviews, :path => 'reviews', :controller => 'messages'
         end
-        map.resources :tutors do |tutors|
-          tutors.resources :tutor_reviews, :as => 'reviews', :controller => 'comments'
+       resources :tutors do
+          resources :tutor_reviews, :path => 'reviews', :controller => 'comments'
         end
       end
 
@@ -877,17 +794,22 @@ class ResourcesTest < ActionController::TestCase
     end
   end
 
-  def test_with_path_segment_path_prefix_requirements
+  def test_with_path_segment_path_prefix_constraints
     expected_options = {:controller => 'messages', :action => 'show', :thread_id => '1.1.1', :id => '1'}
-    with_restful_routing :messages, :as => 'comments',:path_prefix => '/thread/:thread_id', :requirements => { :thread_id => /[0-9]\.[0-9]\.[0-9]/ } do
+    with_routing do |set|
+      set.draw do
+        scope '/thread/:thread_id', :constraints => { :thread_id => /[0-9]\.[0-9]\.[0-9]/ } do
+          resources :messages, :path => 'comments'
+        end
+      end
       assert_recognizes(expected_options, :path => 'thread/1.1.1/comments/1', :method => :get)
     end
   end
 
   def test_resource_has_only_show_action
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :only => :show
+      set.draw do
+        resources :products, :only => :show
       end
 
       assert_resource_allowed_routes('products', {},                    { :id => '1' }, :show, [:index, :new, :create, :edit, :update, :destroy])
@@ -897,8 +819,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_singleton_resource_has_only_show_action
     with_routing do |set|
-      set.draw do |map|
-        map.resource :account, :only => :show
+      set.draw do
+        resource :account, :only => :show
       end
 
       assert_singleton_resource_allowed_routes('accounts', {},                    :show, [:index, :new, :create, :edit, :update, :destroy])
@@ -908,8 +830,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_resource_does_not_have_destroy_action
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :except => :destroy
+      set.draw do
+        resources :products, :except => :destroy
       end
 
       assert_resource_allowed_routes('products', {},                    { :id => '1' }, [:index, :new, :create, :show, :edit, :update], :destroy)
@@ -919,8 +841,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_singleton_resource_does_not_have_destroy_action
     with_routing do |set|
-      set.draw do |map|
-        map.resource :account, :except => :destroy
+      set.draw do
+        resource :account, :except => :destroy
       end
 
       assert_singleton_resource_allowed_routes('accounts', {},                    [:new, :create, :show, :edit, :update], :destroy)
@@ -930,8 +852,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_resource_has_only_create_action_and_named_route
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :only => :create
+      set.draw do
+        resources :products, :only => :create
       end
 
       assert_resource_allowed_routes('products', {},                    { :id => '1' }, :create, [:index, :new, :show, :edit, :update, :destroy])
@@ -943,8 +865,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_resource_has_only_update_action_and_named_route
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :only => :update
+      set.draw do
+        resources :products, :only => :update
       end
 
       assert_resource_allowed_routes('products', {},                    { :id => '1' }, :update, [:index, :new, :create, :show, :edit, :destroy])
@@ -956,8 +878,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_resource_has_only_destroy_action_and_named_route
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :only => :destroy
+      set.draw do
+        resources :products, :only => :destroy
       end
 
       assert_resource_allowed_routes('products', {},                    { :id => '1' }, :destroy, [:index, :new, :create, :show, :edit, :update])
@@ -969,8 +891,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_singleton_resource_has_only_create_action_and_named_route
     with_routing do |set|
-      set.draw do |map|
-        map.resource :account, :only => :create
+      set.draw do
+        resource :account, :only => :create
       end
 
       assert_singleton_resource_allowed_routes('accounts', {},                    :create, [:new, :show, :edit, :update, :destroy])
@@ -982,8 +904,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_singleton_resource_has_only_update_action_and_named_route
     with_routing do |set|
-      set.draw do |map|
-        map.resource :account, :only => :update
+      set.draw do
+        resource :account, :only => :update
       end
 
       assert_singleton_resource_allowed_routes('accounts', {},                    :update, [:new, :create, :show, :edit, :destroy])
@@ -995,8 +917,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_singleton_resource_has_only_destroy_action_and_named_route
     with_routing do |set|
-      set.draw do |map|
-        map.resource :account, :only => :destroy
+      set.draw do
+        resource :account, :only => :destroy
       end
 
       assert_singleton_resource_allowed_routes('accounts', {},                    :destroy, [:new, :create, :show, :edit, :update])
@@ -1008,8 +930,10 @@ class ResourcesTest < ActionController::TestCase
 
   def test_resource_has_only_collection_action
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :except => :all, :collection => { :sale => :get }
+      set.draw do
+        resources :products, :only => [] do
+          get :sale, :on => :collection
+        end
       end
 
       assert_resource_allowed_routes('products', {},                    { :id => '1' }, [], [:index, :new, :create, :show, :edit, :update, :destroy])
@@ -1022,8 +946,10 @@ class ResourcesTest < ActionController::TestCase
 
   def test_resource_has_only_member_action
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :except => :all, :member => { :preview => :get }
+      set.draw do
+        resources :products, :only => [] do
+          get :preview, :on => :member
+        end
       end
 
       assert_resource_allowed_routes('products', {},                    { :id => '1' }, [], [:index, :new, :create, :show, :edit, :update, :destroy])
@@ -1036,8 +962,12 @@ class ResourcesTest < ActionController::TestCase
 
   def test_singleton_resource_has_only_member_action
     with_routing do |set|
-      set.draw do |map|
-        map.resource :account, :except => :all, :member => { :signup => :get }
+      set.draw do
+        resource :account, :only => [] do
+          member do
+            get :signup
+          end
+        end
       end
 
       assert_singleton_resource_allowed_routes('accounts', {},                    [], [:new, :create, :show, :edit, :update, :destroy])
@@ -1050,9 +980,11 @@ class ResourcesTest < ActionController::TestCase
 
   def test_nested_resource_has_only_show_and_member_action
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :only => [:index, :show] do |product|
-          product.resources :images, :member => { :thumbnail => :get }, :only => :show
+      set.draw do
+        resources :products, :only => [:index, :show] do
+          resources :images, :only => :show do
+            get :thumbnail, :on => :member
+          end
         end
       end
 
@@ -1066,9 +998,9 @@ class ResourcesTest < ActionController::TestCase
 
   def test_nested_resource_does_not_inherit_only_option
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :only => :show do |product|
-          product.resources :images, :except => :destroy
+      set.draw do
+        resources :products, :only => :show do
+          resources :images, :except => :destroy
         end
       end
 
@@ -1079,9 +1011,9 @@ class ResourcesTest < ActionController::TestCase
 
   def test_nested_resource_does_not_inherit_only_option_by_default
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :only => :show do |product|
-          product.resources :images
+      set.draw do
+        resources :products, :only => :show do
+          resources :images
         end
       end
 
@@ -1092,9 +1024,9 @@ class ResourcesTest < ActionController::TestCase
 
   def test_nested_resource_does_not_inherit_except_option
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :except => :show do |product|
-          product.resources :images, :only => :destroy
+      set.draw do
+        resources :products, :except => :show do
+          resources :images, :only => :destroy
         end
       end
 
@@ -1105,9 +1037,9 @@ class ResourcesTest < ActionController::TestCase
 
   def test_nested_resource_does_not_inherit_except_option_by_default
     with_routing do |set|
-      set.draw do |map|
-        map.resources :products, :except => :show do |product|
-          product.resources :images
+      set.draw do
+        resources :products, :except => :show do
+          resources :images
         end
       end
 
@@ -1118,8 +1050,8 @@ class ResourcesTest < ActionController::TestCase
 
   def test_default_singleton_restful_route_uses_get
     with_routing do |set|
-      set.draw do |map|
-        map.resource :product
+      set.draw do
+        resource :product
       end
 
       assert_routing '/product', :controller => 'products', :action => 'show'
@@ -1135,15 +1067,41 @@ class ResourcesTest < ActionController::TestCase
 
   protected
     def with_restful_routing(*args)
+      options = args.extract_options!
+      collection_methods = options.delete(:collection)
+      member_methods = options.delete(:member)
+      path_prefix = options.delete(:path_prefix)
+      args.push(options)
+
       with_routing do |set|
-        set.draw { |map| map.resources(*args) }
+        set.draw do
+          scope(path_prefix || '') do
+            resources(*args) do
+              if collection_methods
+                collection do
+                  collection_methods.each do |name, method|
+                    send(method, name)
+                  end
+                end
+              end
+
+              if member_methods
+                member do
+                  member_methods.each do |name, method|
+                    send(method, name)
+                  end
+                end
+              end
+            end
+          end
+        end
         yield
       end
     end
 
     def with_singleton_resources(*args)
       with_routing do |set|
-        set.draw { |map| map.resource(*args) }
+        set.draw {resource(*args) }
         yield
       end
     end
@@ -1385,7 +1343,7 @@ class ResourcesTest < ActionController::TestCase
     end
 
     def distinct_routes? (r1, r2)
-      if r1.conditions == r2.conditions and r1.requirements == r2.requirements then
+      if r1.conditions == r2.conditions and r1.constraints == r2.constraints then
         if r1.segments.collect(&:to_s) == r2.segments.collect(&:to_s) then
           return false
         end
diff --git a/actionpack/test/controller/routing_test.rb b/actionpack/test/controller/routing_test.rb
index fc85b01394..18cf944f46 100644
--- a/actionpack/test/controller/routing_test.rb
+++ b/actionpack/test/controller/routing_test.rb
@@ -2,6 +2,7 @@
 require 'abstract_unit'
 require 'controller/fake_controllers'
 require 'active_support/dependencies'
+require 'active_support/core_ext/object/with_options'
 
 class MilestonesController < ActionController::Base
   def index() head :ok end
@@ -9,14 +10,22 @@ class MilestonesController < ActionController::Base
   def rescue_action(e) raise e end
 end
 
-ROUTING = ActionController::Routing
+ROUTING = ActionDispatch::Routing
+
+module RoutingTestHelpers
+  def url_for(set, options, recall = nil)
+    set.send(:url_for, options.merge(:only_path => true, :_path_segments => recall))
+  end
+end
 
 # See RFC 3986, section 3.3 for allowed path characters.
 class UriReservedCharactersRoutingTest < Test::Unit::TestCase
+  include RoutingTestHelpers
+
   def setup
-    @set = ActionController::Routing::RouteSet.new
-    @set.draw do |map|
-      map.connect ':controller/:action/:variable/*additional'
+    @set = ActionDispatch::Routing::RouteSet.new
+    @set.draw do
+      match ':controller/:action/:variable/*additional'
     end
 
     safe, unsafe = %w(: @ & = + $ , ;), %w(^ ? # [ ])
@@ -27,27 +36,31 @@ class UriReservedCharactersRoutingTest < Test::Unit::TestCase
   end
 
   def test_route_generation_escapes_unsafe_path_characters
-    @set.generate(:controller => "content", :action => "act#{@segment}ion", :variable => "variable", :additional => "foo")
     assert_equal "/content/act#{@escaped}ion/var#{@escaped}iable/add#{@escaped}itional-1/add#{@escaped}itional-2",
-      @set.generate(:controller => "content",
-                    :action => "act#{@segment}ion",
-                    :variable => "var#{@segment}iable",
-                    :additional => ["add#{@segment}itional-1", "add#{@segment}itional-2"])
+      url_for(@set, {
+        :controller => "content",
+        :action => "act#{@segment}ion",
+        :variable => "var#{@segment}iable",
+        :additional => ["add#{@segment}itional-1", "add#{@segment}itional-2"]
+      })
   end
 
   def test_route_recognition_unescapes_path_components
     options = { :controller => "content",
                 :action => "act#{@segment}ion",
                 :variable => "var#{@segment}iable",
-                :additional => ["add#{@segment}itional-1", "add#{@segment}itional-2"] }
+                :additional => "add#{@segment}itional-1/add#{@segment}itional-2" }
     assert_equal options, @set.recognize_path("/content/act#{@escaped}ion/var#{@escaped}iable/add#{@escaped}itional-1/add#{@escaped}itional-2")
   end
 
   def test_route_generation_allows_passing_non_string_values_to_generated_helper
-    assert_equal "/content/action/variable/1/2", @set.generate(:controller => "content",
-                                                                  :action => "action",
-                                                                  :variable => "variable",
-                                                                  :additional => [1, 2])
+    assert_equal "/content/action/variable/1/2",
+      url_for(@set, {
+        :controller => "content",
+        :action => "action",
+        :variable => "variable",
+        :additional => [1, 2]
+      })
   end
 end
 
@@ -67,10 +80,12 @@ class MockController
 end
 
 class LegacyRouteSetTests < Test::Unit::TestCase
+  include RoutingTestHelpers
+
   attr_reader :rs
 
   def setup
-    @rs = ::ActionController::Routing::RouteSet.new
+    @rs = ::ActionDispatch::Routing::RouteSet.new
   end
 
   def teardown
@@ -78,80 +93,83 @@ class LegacyRouteSetTests < Test::Unit::TestCase
   end
 
   def test_default_setup
-    @rs.draw {|m| m.connect ':controller/:action/:id' }
+    @rs.draw { match '/:controller(/:action(/:id))' }
     assert_equal({:controller => "content", :action => 'index'}, rs.recognize_path("/content"))
-    assert_equal({:controller => "content", :action => 'list'}, rs.recognize_path("/content/list"))
+    assert_equal({:controller => "content", :action => 'list'},  rs.recognize_path("/content/list"))
     assert_equal({:controller => "content", :action => 'show', :id => '10'}, rs.recognize_path("/content/show/10"))
 
     assert_equal({:controller => "admin/user", :action => 'show', :id => '10'}, rs.recognize_path("/admin/user/show/10"))
 
-    assert_equal '/admin/user/show/10', rs.generate(:controller => 'admin/user', :action => 'show', :id => 10)
+    assert_equal '/admin/user/show/10', url_for(rs, { :controller => 'admin/user', :action => 'show', :id => 10 })
 
-    assert_equal '/admin/user/show', rs.generate({:action => 'show'}, {:controller => 'admin/user', :action => 'list', :id => '10'})
-    assert_equal '/admin/user/list/10', rs.generate({}, {:controller => 'admin/user', :action => 'list', :id => '10'})
+    assert_equal '/admin/user/show',    url_for(rs, { :action => 'show' }, { :controller => 'admin/user', :action => 'list', :id => '10' })
+    assert_equal '/admin/user/list/10', url_for(rs, {}, { :controller => 'admin/user', :action => 'list', :id => '10' })
 
-    assert_equal '/admin/stuff', rs.generate({:controller => 'stuff'}, {:controller => 'admin/user', :action => 'list', :id => '10'})
-    assert_equal '/stuff', rs.generate({:controller => '/stuff'}, {:controller => 'admin/user', :action => 'list', :id => '10'})
+    assert_equal '/admin/stuff', url_for(rs, { :controller => 'stuff' }, { :controller => 'admin/user', :action => 'list', :id => '10' })
+    assert_equal '/stuff',       url_for(rs, { :controller => '/stuff' }, { :controller => 'admin/user', :action => 'list', :id => '10' })
   end
 
   def test_ignores_leading_slash
     @rs.clear!
-    @rs.draw {|m| m.connect '/:controller/:action/:id'}
+    @rs.draw { match '/:controller(/:action(/:id))'}
     test_default_setup
   end
 
   def test_time_recognition
     # We create many routes to make situation more realistic
-    @rs = ::ActionController::Routing::RouteSet.new
-    @rs.draw { |map|
-      map.frontpage '', :controller => 'search', :action => 'new'
-      map.resources :videos do |video|
-        video.resources :comments
-        video.resource  :file,      :controller => 'video_file'
-        video.resource  :share,     :controller => 'video_shares'
-        video.resource  :abuse,     :controller => 'video_abuses'
+    @rs = ::ActionDispatch::Routing::RouteSet.new
+    @rs.draw {
+      root :to => "search#new", :as => "frontpage"
+      resources :videos do
+        resources :comments
+        resource  :file,      :controller => 'video_file'
+        resource  :share,     :controller => 'video_shares'
+        resource  :abuse,     :controller => 'video_abuses'
       end
-      map.resources :abuses, :controller => 'video_abuses'
-      map.resources :video_uploads
-      map.resources :video_visits
+      resources :abuses, :controller => 'video_abuses'
+      resources :video_uploads
+      resources :video_visits
 
-      map.resources :users do |user|
-        user.resource  :settings
-        user.resources :videos
+      resources :users do
+        resource  :settings
+        resources :videos
       end
-      map.resources :channels do |channel|
-        channel.resources :videos, :controller => 'channel_videos'
+      resources :channels do
+        resources :videos, :controller => 'channel_videos'
       end
-      map.resource  :session
-      map.resource  :lost_password
-      map.search    'search', :controller => 'search'
-      map.resources :pages
-      map.connect ':controller/:action/:id'
+      resource  :session
+      resource  :lost_password
+      match 'search' => 'search#index', :as => 'search'
+      resources :pages
+      match ':controller/:action/:id'
     }
   end
 
   def test_route_with_colon_first
-    rs.draw do |map|
-      map.connect '/:controller/:action/:id', :action => 'index', :id => nil
-      map.connect ':url', :controller => 'tiny_url', :action => 'translate'
+    rs.draw do
+      match '/:controller/:action/:id', :action => 'index', :id => nil
+      match ':url', :controller => 'tiny_url', :action => 'translate'
     end
   end
 
   def test_route_with_regexp_for_controller
-    rs.draw do |map|
-      map.connect ':controller/:admintoken/:action/:id', :controller => /admin\/.+/
-      map.connect ':controller/:action/:id'
+    rs.draw do
+      match ':controller/:admintoken(/:action(/:id))', :controller => /admin\/.+/
+      match '/:controller(/:action(/:id))'
     end
+
     assert_equal({:controller => "admin/user", :admintoken => "foo", :action => "index"},
         rs.recognize_path("/admin/user/foo"))
-    assert_equal({:controller => "content", :action => "foo"}, rs.recognize_path("/content/foo"))
-    assert_equal '/admin/user/foo', rs.generate(:controller => "admin/user", :admintoken => "foo", :action => "index")
-    assert_equal '/content/foo', rs.generate(:controller => "content", :action => "foo")
+    assert_equal({:controller => "content", :action => "foo"},
+        rs.recognize_path("/content/foo"))
+
+    assert_equal '/admin/user/foo', url_for(rs, { :controller => "admin/user", :admintoken => "foo", :action => "index" })
+    assert_equal '/content/foo',    url_for(rs, { :controller => "content", :action => "foo" })
   end
 
   def test_route_with_regexp_and_captures_for_controller
-    rs.draw do |map|
-      map.connect ':controller/:action/:id', :controller => /admin\/(accounts|users)/
+    rs.draw do
+      match '/:controller(/:action(/:id))', :controller => /admin\/(accounts|users)/
     end
     assert_equal({:controller => "admin/accounts", :action => "index"}, rs.recognize_path("/admin/accounts"))
     assert_equal({:controller => "admin/users", :action => "index"}, rs.recognize_path("/admin/users"))
@@ -159,100 +177,97 @@ class LegacyRouteSetTests < Test::Unit::TestCase
   end
 
   def test_route_with_regexp_and_dot
-    rs.draw do |map|
-      map.connect ':controller/:action/:file',
-                        :controller => /admin|user/,
-                        :action => /upload|download/,
-                        :defaults => {:file => nil},
-                        :requirements => {:file => %r{[^/]+(\.[^/]+)?}}
+    rs.draw do
+      match ':controller/:action/:file',
+                :controller => /admin|user/,
+                :action => /upload|download/,
+                :defaults => {:file => nil},
+                :constraints => {:file => %r{[^/]+(\.[^/]+)?}}
     end
     # Without a file extension
     assert_equal '/user/download/file',
-      rs.generate(:controller => "user", :action => "download", :file => "file")
-    assert_equal(
-      {:controller => "user", :action => "download", :file => "file"},
+      url_for(rs, { :controller => "user", :action => "download", :file => "file" })
+
+    assert_equal({:controller => "user", :action => "download", :file => "file"},
       rs.recognize_path("/user/download/file"))
 
     # Now, let's try a file with an extension, really a dot (.)
     assert_equal '/user/download/file.jpg',
-      rs.generate(
-        :controller => "user", :action => "download", :file => "file.jpg")
-    assert_equal(
-      {:controller => "user", :action => "download", :file => "file.jpg"},
+      url_for(rs, { :controller => "user", :action => "download", :file => "file.jpg" })
+
+    assert_equal({:controller => "user", :action => "download", :file => "file.jpg"},
       rs.recognize_path("/user/download/file.jpg"))
   end
 
   def test_basic_named_route
-    rs.draw do |map|
-      map.home '', :controller => 'content', :action => 'list'
+    rs.draw do
+      root :to => 'content#list', :as => 'home'
     end
-    x = setup_for_named_route
-    assert_equal("http://test.host/",
-                 x.send(:home_url))
+    assert_equal("http://test.host/", setup_for_named_route.send(:home_url))
   end
 
   def test_named_route_with_option
-    rs.draw do |map|
-      map.page 'page/:title', :controller => 'content', :action => 'show_page'
+    rs.draw do
+      match 'page/:title' => 'content#show_page', :as => 'page'
     end
-    x = setup_for_named_route
+
     assert_equal("http://test.host/page/new%20stuff",
-                 x.send(:page_url, :title => 'new stuff'))
+        setup_for_named_route.send(:page_url, :title => 'new stuff'))
   end
 
   def test_named_route_with_default
-    rs.draw do |map|
-      map.page 'page/:title', :controller => 'content', :action => 'show_page', :title => 'AboutPage'
+    rs.draw do
+      match 'page/:title' => 'content#show_page', :title => 'AboutPage', :as => 'page'
     end
-    x = setup_for_named_route
-    assert_equal("http://test.host/page/AboutRails",
-                 x.send(:page_url, :title => "AboutRails"))
 
-  end
-
-  def test_named_route_with_name_prefix
-    rs.draw do |map|
-      map.page 'page', :controller => 'content', :action => 'show_page', :name_prefix => 'my_'
-    end
-    x = setup_for_named_route
-    assert_equal("http://test.host/page",
-                 x.send(:my_page_url))
+    assert_equal("http://test.host/page/AboutRails",
+        setup_for_named_route.send(:page_url, :title => "AboutRails"))
   end
 
   def test_named_route_with_path_prefix
-    rs.draw do |map|
-      map.page 'page', :controller => 'content', :action => 'show_page', :path_prefix => 'my'
+    rs.draw do
+      scope "my" do
+        match 'page' => 'content#show_page', :as => 'page'
+      end
     end
-    x = setup_for_named_route
+
     assert_equal("http://test.host/my/page",
-                 x.send(:page_url))
+        setup_for_named_route.send(:page_url))
   end
 
   def test_named_route_with_blank_path_prefix
-    rs.draw do |map|
-      map.page 'page', :controller => 'content', :action => 'show_page', :path_prefix => ''
+    rs.draw do
+      scope "" do
+        match 'page' => 'content#show_page', :as => 'page'
+      end
     end
-    x = setup_for_named_route
+
     assert_equal("http://test.host/page",
-                 x.send(:page_url))
+        setup_for_named_route.send(:page_url))
   end
 
   def test_named_route_with_nested_controller
-    rs.draw do |map|
-      map.users 'admin/user', :controller => 'admin/user', :action => 'index'
+    rs.draw do
+      match 'admin/user' => 'admin/user#index', :as => "users"
     end
-    x = setup_for_named_route
+
     assert_equal("http://test.host/admin/user",
-                 x.send(:users_url))
+        setup_for_named_route.send(:users_url))
   end
 
   def test_optimised_named_route_with_host
-    rs.draw do |map|
-      map.pages 'pages', :controller => 'content', :action => 'show_page', :host => 'foo.com'
+    rs.draw do
+      match 'page' => 'content#show_page', :as => 'pages', :host => 'foo.com'
     end
-    x = setup_for_named_route
-    x.expects(:url_for).with(:host => 'foo.com', :only_path => false, :controller => 'content', :action => 'show_page', :use_route => :pages).once
-    x.send(:pages_url)
+    routes = setup_for_named_route
+    routes.expects(:url_for).with({
+      :host => 'foo.com',
+      :only_path => false,
+      :controller => 'content',
+      :action => 'show_page',
+      :use_route => 'pages'
+    }).once
+    routes.send(:pages_url)
   end
 
   def setup_for_named_route
@@ -260,263 +275,229 @@ class LegacyRouteSetTests < Test::Unit::TestCase
   end
 
   def test_named_route_without_hash
-    rs.draw do |map|
-      map.normal ':controller/:action/:id'
+    rs.draw do
+      match ':controller/:action/:id', :as => 'normal'
     end
   end
 
   def test_named_route_root
-    rs.draw do |map|
-      map.root :controller => "hello"
+    rs.draw do
+      root :to => "hello#index"
     end
-    x = setup_for_named_route
-    assert_equal("http://test.host/", x.send(:root_url))
-    assert_equal("/", x.send(:root_path))
+    routes = setup_for_named_route
+    assert_equal("http://test.host/", routes.send(:root_url))
+    assert_equal("/", routes.send(:root_path))
   end
 
   def test_named_route_with_regexps
-    rs.draw do |map|
-      map.article 'page/:year/:month/:day/:title', :controller => 'page', :action => 'show',
+    rs.draw do
+      match 'page/:year/:month/:day/:title' => 'page#show', :as => 'article',
         :year => /\d+/, :month => /\d+/, :day => /\d+/
-      map.connect ':controller/:action/:id'
+      match ':controller/:action/:id'
     end
-    x = setup_for_named_route
-    # assert_equal(
-    #   {:controller => 'page', :action => 'show', :title => 'hi', :use_route => :article, :only_path => false},
-    #   x.send(:article_url, :title => 'hi')
-    # )
-    assert_equal(
-      "http://test.host/page/2005/6/10/hi",
-      x.send(:article_url, :title => 'hi', :day => 10, :year => 2005, :month => 6)
-    )
+
+    routes = setup_for_named_route
+
+    assert_equal "http://test.host/page/2005/6/10/hi",
+      routes.send(:article_url, :title => 'hi', :day => 10, :year => 2005, :month => 6)
   end
 
   def test_changing_controller
-    @rs.draw {|m| m.connect ':controller/:action/:id' }
+    @rs.draw { match ':controller/:action/:id' }
 
-    assert_equal '/admin/stuff/show/10', rs.generate(
-      {:controller => 'stuff', :action => 'show', :id => 10},
-      {:controller => 'admin/user', :action => 'index'}
-    )
+    assert_equal '/admin/stuff/show/10',
+        url_for(rs, {:controller => 'stuff', :action => 'show', :id => 10},
+                    {:controller => 'admin/user', :action => 'index'})
   end
 
   def test_paths_escaped
-    rs.draw do |map|
-      map.path 'file/*path', :controller => 'content', :action => 'show_file'
-      map.connect ':controller/:action/:id'
+    rs.draw do
+      match 'file/*path' => 'content#show_file', :as => 'path'
+      match ':controller/:action/:id'
     end
 
     # No + to space in URI escaping, only for query params.
     results = rs.recognize_path "/file/hello+world/how+are+you%3F"
     assert results, "Recognition should have succeeded"
-    assert_equal ['hello+world', 'how+are+you?'], results[:path]
+    assert_equal 'hello+world/how+are+you?', results[:path]
 
     # Use %20 for space instead.
     results = rs.recognize_path "/file/hello%20world/how%20are%20you%3F"
     assert results, "Recognition should have succeeded"
-    assert_equal ['hello world', 'how are you?'], results[:path]
+    assert_equal 'hello world/how are you?', results[:path]
   end
 
   def test_paths_slashes_unescaped_with_ordered_parameters
-    rs.draw do |map|
-      map.path '/file/*path', :controller => 'content'
+    rs.draw do
+      match '/file/*path' => 'content#index', :as => 'path'
     end
 
     # No / to %2F in URI, only for query params.
-    x = setup_for_named_route
-    assert_equal("/file/hello/world", x.send(:path_path, ['hello', 'world']))
+    assert_equal("/file/hello/world", setup_for_named_route.send(:path_path, ['hello', 'world']))
   end
 
   def test_non_controllers_cannot_be_matched
-    rs.draw do |map|
-      map.connect ':controller/:action/:id'
+    rs.draw do
+      match ':controller/:action/:id'
     end
     assert_raise(ActionController::RoutingError) { rs.recognize_path("/not_a/show/10") }
   end
 
-  def test_paths_do_not_accept_defaults
-    assert_raise(ActionController::RoutingError) do
-      rs.draw do |map|
-        map.path 'file/*path', :controller => 'content', :action => 'show_file', :path => %w(fake default)
-        map.connect ':controller/:action/:id'
-      end
-    end
-
-    rs.draw do |map|
-      map.path 'file/*path', :controller => 'content', :action => 'show_file', :path => []
-      map.connect ':controller/:action/:id'
+  def test_should_list_options_diff_when_routing_constraints_dont_match
+    rs.draw do
+      match 'post/:id' => 'post#show', :constraints => { :id => /\d+/ }, :as => 'post'
     end
-  end
-
-  def test_should_list_options_diff_when_routing_requirements_dont_match
-    rs.draw do |map|
-      map.post 'post/:id', :controller=> 'post', :action=> 'show', :requirements => {:id => /\d+/}
+    assert_raise(ActionController::RoutingError) do
+      url_for(rs, { :controller => 'post', :action => 'show', :bad_param => "foo", :use_route => "post" })
     end
-    assert_raise(ActionController::RoutingError) { rs.generate(:controller => 'post', :action => 'show', :bad_param => "foo", :use_route => "post") }
   end
 
   def test_dynamic_path_allowed
-    rs.draw do |map|
-      map.connect '*path', :controller => 'content', :action => 'show_file'
+    rs.draw do
+      match '*path' => 'content#show_file'
     end
 
-    assert_equal '/pages/boo', rs.generate(:controller => 'content', :action => 'show_file', :path => %w(pages boo))
+    assert_equal '/pages/boo',
+        url_for(rs, { :controller => 'content', :action => 'show_file', :path => %w(pages boo) })
   end
 
   def test_dynamic_recall_paths_allowed
-    rs.draw do |map|
-      map.connect '*path', :controller => 'content', :action => 'show_file'
+    rs.draw do
+      match '*path' => 'content#show_file'
     end
 
-    assert_equal '/pages/boo', rs.generate({}, :controller => 'content', :action => 'show_file', :path => %w(pages boo))
+    assert_equal '/pages/boo',
+        url_for(rs, {}, { :controller => 'content', :action => 'show_file', :path => %w(pages boo) })
   end
 
   def test_backwards
-    rs.draw do |map|
-      map.connect 'page/:id/:action', :controller => 'pages', :action => 'show'
-      map.connect ':controller/:action/:id'
+    rs.draw do
+      match 'page/:id(/:action)' => 'pages#show'
+      match ':controller(/:action(/:id))'
     end
 
-    assert_equal '/page/20', rs.generate({:id => 20}, {:controller => 'pages', :action => 'show'})
-    assert_equal '/page/20', rs.generate(:controller => 'pages', :id => 20, :action => 'show')
-    assert_equal '/pages/boo', rs.generate(:controller => 'pages', :action => 'boo')
+    assert_equal '/page/20',   url_for(rs, { :id => 20 }, { :controller => 'pages', :action => 'show' })
+    assert_equal '/page/20',   url_for(rs, { :controller => 'pages', :id => 20, :action => 'show' })
+    assert_equal '/pages/boo', url_for(rs, { :controller => 'pages', :action => 'boo' })
   end
 
   def test_route_with_fixnum_default
-    rs.draw do |map|
-      map.connect 'page/:id', :controller => 'content', :action => 'show_page', :id => 1
-      map.connect ':controller/:action/:id'
+    rs.draw do
+      match 'page(/:id)' => 'content#show_page', :id => 1
+      match ':controller/:action/:id'
     end
 
-    assert_equal '/page', rs.generate(:controller => 'content', :action => 'show_page')
-    assert_equal '/page', rs.generate(:controller => 'content', :action => 'show_page', :id => 1)
-    assert_equal '/page', rs.generate(:controller => 'content', :action => 'show_page', :id => '1')
-    assert_equal '/page/10', rs.generate(:controller => 'content', :action => 'show_page', :id => 10)
+    assert_equal '/page',    url_for(rs, { :controller => 'content', :action => 'show_page' })
+    assert_equal '/page',    url_for(rs, { :controller => 'content', :action => 'show_page', :id => 1 })
+    assert_equal '/page',    url_for(rs, { :controller => 'content', :action => 'show_page', :id => '1' })
+    assert_equal '/page/10', url_for(rs, { :controller => 'content', :action => 'show_page', :id => 10 })
 
-    assert_equal({:controller => "content", :action => 'show_page', :id => '1'}, rs.recognize_path("/page"))
+    assert_equal({:controller => "content", :action => 'show_page', :id => 1 }, rs.recognize_path("/page"))
     assert_equal({:controller => "content", :action => 'show_page', :id => '1'}, rs.recognize_path("/page/1"))
     assert_equal({:controller => "content", :action => 'show_page', :id => '10'}, rs.recognize_path("/page/10"))
   end
 
   # For newer revision
   def test_route_with_text_default
-    rs.draw do |map|
-      map.connect 'page/:id', :controller => 'content', :action => 'show_page', :id => 1
-      map.connect ':controller/:action/:id'
+    rs.draw do
+      match 'page/:id' => 'content#show_page', :id => 1
+      match ':controller/:action/:id'
     end
 
-    assert_equal '/page/foo', rs.generate(:controller => 'content', :action => 'show_page', :id => 'foo')
-    assert_equal({:controller => "content", :action => 'show_page', :id => 'foo'}, rs.recognize_path("/page/foo"))
+    assert_equal '/page/foo', url_for(rs, { :controller => 'content', :action => 'show_page', :id => 'foo' })
+    assert_equal({ :controller => "content", :action => 'show_page', :id => 'foo' }, rs.recognize_path("/page/foo"))
 
-    token = "\321\202\320\265\320\272\321\201\321\202" # 'text' in russian
+    token = "\321\202\320\265\320\272\321\201\321\202" # 'text' in Russian
     token.force_encoding(Encoding::BINARY) if token.respond_to?(:force_encoding)
     escaped_token = CGI::escape(token)
 
-    assert_equal '/page/' + escaped_token, rs.generate(:controller => 'content', :action => 'show_page', :id => token)
-    assert_equal({:controller => "content", :action => 'show_page', :id => token}, rs.recognize_path("/page/#{escaped_token}"))
+    assert_equal '/page/' + escaped_token, url_for(rs, { :controller => 'content', :action => 'show_page', :id => token })
+    assert_equal({ :controller => "content", :action => 'show_page', :id => token }, rs.recognize_path("/page/#{escaped_token}"))
   end
 
   def test_action_expiry
-    @rs.draw {|m| m.connect ':controller/:action/:id' }
-    assert_equal '/content', rs.generate({:controller => 'content'}, {:controller => 'content', :action => 'show'})
+    @rs.draw { match ':controller(/:action(/:id))' }
+    assert_equal '/content', url_for(rs, { :controller => 'content' }, { :controller => 'content', :action => 'show' })
   end
 
   def test_requirement_should_prevent_optional_id
-    rs.draw do |map|
-      map.post 'post/:id', :controller=> 'post', :action=> 'show', :requirements => {:id => /\d+/}
+    rs.draw do
+      match 'post/:id' => 'post#show', :constraints => {:id => /\d+/}, :as => 'post'
     end
 
-    assert_equal '/post/10', rs.generate(:controller => 'post', :action => 'show', :id => 10)
+    assert_equal '/post/10', url_for(rs, { :controller => 'post', :action => 'show', :id => 10 })
 
     assert_raise ActionController::RoutingError do
-      rs.generate(:controller => 'post', :action => 'show')
+      url_for(rs, { :controller => 'post', :action => 'show' })
     end
   end
 
   def test_both_requirement_and_optional
-    rs.draw do |map|
-      map.blog('test/:year', :controller => 'post', :action => 'show',
+    rs.draw do
+      match('test(/:year)' => 'post#show', :as => 'blog',
         :defaults => { :year => nil },
-        :requirements => { :year => /\d{4}/ }
+        :constraints => { :year => /\d{4}/ }
       )
-      map.connect ':controller/:action/:id'
+      match ':controller/:action/:id'
     end
 
-    assert_equal '/test', rs.generate(:controller => 'post', :action => 'show')
-    assert_equal '/test', rs.generate(:controller => 'post', :action => 'show', :year => nil)
+    assert_equal '/test', url_for(rs, { :controller => 'post', :action => 'show' })
+    assert_equal '/test', url_for(rs, { :controller => 'post', :action => 'show', :year => nil })
 
-    x = setup_for_named_route
-    assert_equal("http://test.host/test",
-                 x.send(:blog_url))
+    assert_equal("http://test.host/test", setup_for_named_route.send(:blog_url))
   end
 
   def test_set_to_nil_forgets
-    rs.draw do |map|
-      map.connect 'pages/:year/:month/:day', :controller => 'content', :action => 'list_pages', :month => nil, :day => nil
-      map.connect ':controller/:action/:id'
+    rs.draw do
+      match 'pages(/:year(/:month(/:day)))' => 'content#list_pages', :month => nil, :day => nil
+      match ':controller/:action/:id'
     end
 
     assert_equal '/pages/2005',
-      rs.generate(:controller => 'content', :action => 'list_pages', :year => 2005)
+      url_for(rs, { :controller => 'content', :action => 'list_pages', :year => 2005 })
     assert_equal '/pages/2005/6',
-      rs.generate(:controller => 'content', :action => 'list_pages', :year => 2005, :month => 6)
+      url_for(rs, { :controller => 'content', :action => 'list_pages', :year => 2005, :month => 6 })
     assert_equal '/pages/2005/6/12',
-      rs.generate(:controller => 'content', :action => 'list_pages', :year => 2005, :month => 6, :day => 12)
+      url_for(rs, { :controller => 'content', :action => 'list_pages', :year => 2005, :month => 6, :day => 12 })
 
     assert_equal '/pages/2005/6/4',
-      rs.generate({:day => 4}, {:controller => 'content', :action => 'list_pages', :year => '2005', :month => '6', :day => '12'})
+      url_for(rs, { :day => 4 },   { :controller => 'content', :action => 'list_pages', :year => '2005', :month => '6', :day => '12' })
 
     assert_equal '/pages/2005/6',
-      rs.generate({:day => nil}, {:controller => 'content', :action => 'list_pages', :year => '2005', :month => '6', :day => '12'})
+      url_for(rs, { :day => nil }, { :controller => 'content', :action => 'list_pages', :year => '2005', :month => '6', :day => '12' })
 
     assert_equal '/pages/2005',
-      rs.generate({:day => nil, :month => nil}, {:controller => 'content', :action => 'list_pages', :year => '2005', :month => '6', :day => '12'})
+      url_for(rs, { :day => nil, :month => nil }, { :controller => 'content', :action => 'list_pages', :year => '2005', :month => '6', :day => '12' })
   end
 
-  def test_url_with_no_action_specified
-    rs.draw do |map|
-      map.connect '', :controller => 'content'
-      map.connect ':controller/:action/:id'
+  def test_root_url_generation_with_controller_and_action
+    rs.draw do
+      root :to => "content#index"
     end
 
-    assert_equal '/', rs.generate(:controller => 'content', :action => 'index')
-    assert_equal '/', rs.generate(:controller => 'content')
+    assert_equal '/', url_for(rs, { :controller => 'content', :action => 'index' })
+    assert_equal '/', url_for(rs, { :controller => 'content' })
   end
 
-  def test_named_url_with_no_action_specified
-    rs.draw do |map|
-      map.home '', :controller => 'content'
-      map.connect ':controller/:action/:id'
+  def test_named_root_url_generation_with_controller_and_action
+    rs.draw do
+       root :to => "content#index", :as => 'home'
     end
 
-    assert_equal '/', rs.generate(:controller => 'content', :action => 'index')
-    assert_equal '/', rs.generate(:controller => 'content')
+    assert_equal '/', url_for(rs, { :controller => 'content', :action => 'index' })
+    assert_equal '/', url_for(rs, { :controller => 'content' })
 
-    x = setup_for_named_route
-    assert_equal("http://test.host/",
-                 x.send(:home_url))
-  end
-
-  def test_url_generated_when_forgetting_action
-    [{:controller => 'content', :action => 'index'}, {:controller => 'content'}].each do |hash|
-      rs.draw do |map|
-        map.home '', hash
-        map.connect ':controller/:action/:id'
-      end
-      assert_equal '/', rs.generate({:action => nil}, {:controller => 'content', :action => 'hello'})
-      assert_equal '/', rs.generate({:controller => 'content'})
-      assert_equal '/content/hi', rs.generate({:controller => 'content', :action => 'hi'})
-    end
+    assert_equal("http://test.host/", setup_for_named_route.send(:home_url))
   end
 
   def test_named_route_method
-    rs.draw do |map|
-      map.categories 'categories', :controller => 'content', :action => 'categories'
-      map.connect ':controller/:action/:id'
+    rs.draw do
+      match 'categories' => 'content#categories', :as => 'categories'
+      match ':controller(/:action(/:id))'
     end
 
-    assert_equal '/categories', rs.generate(:controller => 'content', :action => 'categories')
-    assert_equal '/content/hi', rs.generate({:controller => 'content', :action => 'hi'})
+    assert_equal '/categories', url_for(rs, { :controller => 'content', :action => 'categories' })
+    assert_equal '/content/hi', url_for(rs, { :controller => 'content', :action => 'hi' })
   end
 
   def test_named_routes_array
@@ -525,23 +506,26 @@ class LegacyRouteSetTests < Test::Unit::TestCase
   end
 
   def test_nil_defaults
-    rs.draw do |map|
-      map.connect 'journal',
-        :controller => 'content',
-        :action => 'list_journal',
+    rs.draw do
+      match 'journal' => 'content#list_journal',
         :date => nil, :user_id => nil
-      map.connect ':controller/:action/:id'
+      match ':controller/:action/:id'
     end
 
-    assert_equal '/journal', rs.generate(:controller => 'content', :action => 'list_journal', :date => nil, :user_id => nil)
+    assert_equal '/journal', url_for(rs, {
+      :controller => 'content',
+      :action => 'list_journal',
+      :date => nil,
+      :user_id => nil
+    })
   end
 
   def setup_request_method_routes_for(method)
-    rs.draw do |r|
-      r.connect '/match', :controller => 'books', :action => 'get', :conditions => { :method => :get }
-      r.connect '/match', :controller => 'books', :action => 'post', :conditions => { :method => :post }
-      r.connect '/match', :controller => 'books', :action => 'put', :conditions => { :method => :put }
-      r.connect '/match', :controller => 'books', :action => 'delete', :conditions => { :method => :delete }
+    rs.draw do
+      match '/match' => 'books#get', :via => :get
+      match '/match' => 'books#post', :via => :post
+      match '/match' => 'books#put', :via => :put
+      match '/match' => 'books#delete', :via => :delete
     end
   end
 
@@ -554,9 +538,9 @@ class LegacyRouteSetTests < Test::Unit::TestCase
   end
 
   def test_recognize_array_of_methods
-    rs.draw do |r|
-      r.connect '/match', :controller => 'books', :action => 'get_or_post', :conditions => { :method => [:get, :post] }
-      r.connect '/match', :controller => 'books', :action => 'not_get_or_post'
+    rs.draw do
+      match '/match' => 'books#get_or_post', :via => [:get, :post]
+      match '/match' => 'books#not_get_or_post'
     end
 
     params = rs.recognize_path("/match", :method => :post)
@@ -567,11 +551,11 @@ class LegacyRouteSetTests < Test::Unit::TestCase
   end
 
   def test_subpath_recognized
-    rs.draw do |r|
-      r.connect '/books/:id/edit', :controller => 'subpath_books', :action => 'edit'
-      r.connect '/items/:id/:action', :controller => 'subpath_books'
-      r.connect '/posts/new/:action', :controller => 'subpath_books'
-      r.connect '/posts/:id', :controller => 'subpath_books', :action => "show"
+    rs.draw do
+      match '/books/:id/edit'    => 'subpath_books#edit'
+      match '/items/:id/:action' => 'subpath_books'
+      match '/posts/new/:action' => 'subpath_books'
+      match '/posts/:id'         => 'subpath_books#show'
     end
 
     hash = rs.recognize_path "/books/17/edit"
@@ -592,36 +576,35 @@ class LegacyRouteSetTests < Test::Unit::TestCase
   end
 
   def test_subpath_generated
-    rs.draw do |r|
-      r.connect '/books/:id/edit', :controller => 'subpath_books', :action => 'edit'
-      r.connect '/items/:id/:action', :controller => 'subpath_books'
-      r.connect '/posts/new/:action', :controller => 'subpath_books'
+    rs.draw do
+      match '/books/:id/edit'    => 'subpath_books#edit'
+      match '/items/:id/:action' => 'subpath_books'
+      match '/posts/new/:action' => 'subpath_books'
     end
 
-    assert_equal "/books/7/edit", rs.generate(:controller => "subpath_books", :id => 7, :action => "edit")
-    assert_equal "/items/15/complete", rs.generate(:controller => "subpath_books", :id => 15, :action => "complete")
-    assert_equal "/posts/new/preview", rs.generate(:controller => "subpath_books", :action => "preview")
+    assert_equal "/books/7/edit",      url_for(rs, { :controller => "subpath_books", :id => 7, :action => "edit" })
+    assert_equal "/items/15/complete", url_for(rs, { :controller => "subpath_books", :id => 15, :action => "complete" })
+    assert_equal "/posts/new/preview", url_for(rs, { :controller => "subpath_books", :action => "preview" })
   end
 
-  def test_failed_requirements_raises_exception_with_violated_requirements
-    rs.draw do |r|
-      r.foo_with_requirement 'foos/:id', :controller=>'foos', :requirements=>{:id=>/\d+/}
+  def test_failed_constraints_raises_exception_with_violated_constraints
+    rs.draw do
+      match 'foos/:id' => 'foos#show', :as => 'foo_with_requirement', :constraints => { :id => /\d+/ }
     end
 
-    x = setup_for_named_route
     assert_raise(ActionController::RoutingError) do
-      x.send(:foo_with_requirement_url, "I am Against the requirements")
+      setup_for_named_route.send(:foo_with_requirement_url, "I am Against the constraints")
     end
   end
 
   def test_routes_changed_correctly_after_clear
-    rs = ::ActionController::Routing::RouteSet.new
-    rs.draw do |r|
-      r.connect 'ca', :controller => 'ca', :action => "aa"
-      r.connect 'cb', :controller => 'cb', :action => "ab"
-      r.connect 'cc', :controller => 'cc', :action => "ac"
-      r.connect ':controller/:action/:id'
-      r.connect ':controller/:action/:id.:format'
+    rs = ::ActionDispatch::Routing::RouteSet.new
+    rs.draw do
+      match 'ca' => 'ca#aa'
+      match 'cb' => 'cb#ab'
+      match 'cc' => 'cc#ac'
+      match ':controller/:action/:id'
+      match ':controller/:action/:id.:format'
     end
 
     hash = rs.recognize_path "/cc"
@@ -629,22 +612,23 @@ class LegacyRouteSetTests < Test::Unit::TestCase
     assert_not_nil hash
     assert_equal %w(cc ac), [hash[:controller], hash[:action]]
 
-    rs.draw do |r|
-      r.connect 'cb', :controller => 'cb', :action => "ab"
-      r.connect 'cc', :controller => 'cc', :action => "ac"
-      r.connect ':controller/:action/:id'
-      r.connect ':controller/:action/:id.:format'
+    rs.draw do
+      match 'cb' => 'cb#ab'
+      match 'cc' => 'cc#ac'
+      match ':controller/:action/:id'
+      match ':controller/:action/:id.:format'
     end
 
     hash = rs.recognize_path "/cc"
 
     assert_not_nil hash
     assert_equal %w(cc ac), [hash[:controller], hash[:action]]
-
   end
 end
 
 class RouteSetTest < ActiveSupport::TestCase
+  include RoutingTestHelpers
+
   def set
     @set ||= ROUTING::RouteSet.new
   end
@@ -656,30 +640,30 @@ class RouteSetTest < ActiveSupport::TestCase
   def default_route_set
     @default_route_set ||= begin
       set = ROUTING::RouteSet.new
-      set.draw do |map|
-        map.connect '/:controller/:action/:id/'
+      set.draw do
+        match '/:controller(/:action(/:id))'
       end
       set
     end
   end
 
   def test_generate_extras
-    set.draw { |m| m.connect ':controller/:action/:id' }
+    set.draw { match ':controller/(:action(/:id))' }
     path, extras = set.generate_extras(:controller => "foo", :action => "bar", :id => 15, :this => "hello", :that => "world")
     assert_equal "/foo/bar/15", path
     assert_equal %w(that this), extras.map { |e| e.to_s }.sort
   end
 
   def test_extra_keys
-    set.draw { |m| m.connect ':controller/:action/:id' }
+    set.draw { match ':controller/:action/:id' }
     extras = set.extra_keys(:controller => "foo", :action => "bar", :id => 15, :this => "hello", :that => "world")
     assert_equal %w(that this), extras.map { |e| e.to_s }.sort
   end
 
   def test_generate_extras_not_first
-    set.draw do |map|
-      map.connect ':controller/:action/:id.:format'
-      map.connect ':controller/:action/:id'
+    set.draw do
+      match ':controller/:action/:id.:format'
+      match ':controller/:action/:id'
     end
     path, extras = set.generate_extras(:controller => "foo", :action => "bar", :id => 15, :this => "hello", :that => "world")
     assert_equal "/foo/bar/15", path
@@ -687,17 +671,18 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_generate_not_first
-    set.draw do |map|
-      map.connect ':controller/:action/:id.:format'
-      map.connect ':controller/:action/:id'
+    set.draw do
+      match ':controller/:action/:id.:format'
+      match ':controller/:action/:id'
     end
-    assert_equal "/foo/bar/15?this=hello", set.generate(:controller => "foo", :action => "bar", :id => 15, :this => "hello")
+    assert_equal "/foo/bar/15?this=hello",
+        url_for(set, { :controller => "foo", :action => "bar", :id => 15, :this => "hello" })
   end
 
   def test_extra_keys_not_first
-    set.draw do |map|
-      map.connect ':controller/:action/:id.:format'
-      map.connect ':controller/:action/:id'
+    set.draw do
+      match ':controller/:action/:id.:format'
+      match ':controller/:action/:id'
     end
     extras = set.extra_keys(:controller => "foo", :action => "bar", :id => 15, :this => "hello", :that => "world")
     assert_equal %w(that this), extras.map { |e| e.to_s }.sort
@@ -705,44 +690,44 @@ class RouteSetTest < ActiveSupport::TestCase
 
   def test_draw
     assert_equal 0, set.routes.size
-    set.draw do |map|
-      map.connect '/hello/world', :controller => 'a', :action => 'b'
+    set.draw do
+      match '/hello/world' => 'a#b'
     end
     assert_equal 1, set.routes.size
   end
 
   def test_draw_symbol_controller_name
     assert_equal 0, set.routes.size
-    set.draw do |map|
-      map.connect '/users/index', :controller => :users, :action => :index
+    set.draw do
+      match '/users/index' => 'users#index'
     end
-    params = set.recognize_path('/users/index', :method => :get)
+    set.recognize_path('/users/index', :method => :get)
     assert_equal 1, set.routes.size
   end
 
   def test_named_draw
     assert_equal 0, set.routes.size
-    set.draw do |map|
-      map.hello '/hello/world', :controller => 'a', :action => 'b'
+    set.draw do
+      match '/hello/world' => 'a#b', :as => 'hello'
     end
     assert_equal 1, set.routes.size
     assert_equal set.routes.first, set.named_routes[:hello]
   end
 
   def test_later_named_routes_take_precedence
-    set.draw do |map|
-      map.hello '/hello/world', :controller => 'a', :action => 'b'
-      map.hello '/hello', :controller => 'a', :action => 'b'
+    set.draw do
+      match '/hello/world' => 'a#b', :as => 'hello'
+      match '/hello'       => 'a#b', :as => 'hello'
     end
     assert_equal set.routes.last, set.named_routes[:hello]
   end
 
   def setup_named_route_test
-    set.draw do |map|
-      map.show '/people/:id', :controller => 'people', :action => 'show'
-      map.index '/people', :controller => 'people', :action => 'index'
-      map.multi '/people/go/:foo/:bar/joe/:id', :controller => 'people', :action => 'multi'
-      map.users '/admin/users', :controller => 'admin/users', :action => 'index'
+    set.draw do
+      match '/people(/:id)' => 'people#show', :as => 'show'
+      match '/people' => 'people#index', :as => 'index'
+      match '/people/go/:foo/:bar/joe(/:id)' => 'people#multi', :as => 'multi'
+      match '/admin/users' => 'admin/users#index', :as => "users"
     end
 
     MockController.build(set.url_helpers).new
@@ -752,15 +737,15 @@ class RouteSetTest < ActiveSupport::TestCase
     controller = setup_named_route_test
 
     assert_equal(
-      { :controller => 'people', :action => 'show', :id => 5, :use_route => :show, :only_path => false },
+      { :controller => 'people', :action => 'show', :id => 5, :use_route => "show", :only_path => false },
       controller.send(:hash_for_show_url, :id => 5))
 
     assert_equal(
-      { :controller => 'people', :action => 'index', :use_route => :index, :only_path => false },
+      { :controller => 'people', :action => 'index', :use_route => "index", :only_path => false },
       controller.send(:hash_for_index_url))
 
     assert_equal(
-      { :controller => 'people', :action => 'show', :id => 5, :use_route => :show, :only_path => true },
+      { :controller => 'people', :action => 'show', :id => 5, :use_route => "show", :only_path => true },
       controller.send(:hash_for_show_path, :id => 5)
     )
   end
@@ -776,7 +761,7 @@ class RouteSetTest < ActiveSupport::TestCase
 
     assert_equal "http://test.host/admin/users", controller.send(:users_url)
     assert_equal '/admin/users', controller.send(:users_path)
-    assert_equal '/admin/users', set.generate(controller.send(:hash_for_users_url), {:controller => 'users', :action => 'index'})
+    assert_equal '/admin/users', url_for(set, controller.send(:hash_for_users_url), { :controller => 'users', :action => 'index' })
   end
 
   def test_named_route_url_method_with_anchor
@@ -841,30 +826,23 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_draw_default_route
-    set.draw do |map|
-      map.connect '/:controller/:action/:id'
+    set.draw do
+      match '/:controller/:action/:id'
     end
 
     assert_equal 1, set.routes.size
 
-    assert_equal '/users/show/10', set.generate(:controller => 'users', :action => 'show', :id => 10)
-    assert_equal '/users/index/10', set.generate(:controller => 'users', :id => 10)
+    assert_equal '/users/show/10',  url_for(set, { :controller => 'users', :action => 'show', :id => 10 })
+    assert_equal '/users/index/10', url_for(set, { :controller => 'users', :id => 10 })
 
     assert_equal({:controller => 'users', :action => 'index', :id => '10'}, set.recognize_path('/users/index/10'))
     assert_equal({:controller => 'users', :action => 'index', :id => '10'}, set.recognize_path('/users/index/10/'))
   end
 
-  def test_draw_default_route_with_default_controller
-    set.draw do |map|
-      map.connect '/:controller/:action/:id', :controller => 'users'
-    end
-    assert_equal({:controller => 'users', :action => 'index'}, set.recognize_path('/'))
-  end
-
   def test_route_with_parameter_shell
-    set.draw do |map|
-      map.connect 'page/:id', :controller => 'pages', :action => 'show', :id => /\d+/
-      map.connect '/:controller/:action/:id'
+    set.draw do
+      match 'page/:id' => 'pages#show', :id => /\d+/
+      match '/:controller(/:action(/:id))'
     end
 
     assert_equal({:controller => 'pages', :action => 'index'}, set.recognize_path('/pages'))
@@ -875,76 +853,66 @@ class RouteSetTest < ActiveSupport::TestCase
     assert_equal({:controller => 'pages', :action => 'show', :id => '10'}, set.recognize_path('/page/10'))
   end
 
-  def test_route_requirements_with_anchor_chars_are_invalid
-    assert_raise ArgumentError do
-      set.draw do |map|
-        map.connect 'page/:id', :controller => 'pages', :action => 'show', :id => /^\d+/
+  def test_route_constraints_on_request_object_with_anchors_are_valid
+    assert_nothing_raised do
+      set.draw do
+        match 'page/:id' => 'pages#show', :constraints => { :host => /^foo$/ }
       end
     end
+  end
+
+  def test_route_constraints_with_anchor_chars_are_invalid
     assert_raise ArgumentError do
-      set.draw do |map|
-        map.connect 'page/:id', :controller => 'pages', :action => 'show', :id => /\A\d+/
+      set.draw do
+        match 'page/:id' => 'pages#show', :id => /^\d+/
       end
     end
     assert_raise ArgumentError do
-      set.draw do |map|
-        map.connect 'page/:id', :controller => 'pages', :action => 'show', :id => /\d+$/
+      set.draw do
+        match 'page/:id' => 'pages#show', :id => /\A\d+/
       end
     end
     assert_raise ArgumentError do
-      set.draw do |map|
-        map.connect 'page/:id', :controller => 'pages', :action => 'show', :id => /\d+\Z/
+      set.draw do
+        match 'page/:id' => 'pages#show', :id => /\d+$/
       end
     end
     assert_raise ArgumentError do
-      set.draw do |map|
-        map.connect 'page/:id', :controller => 'pages', :action => 'show', :id => /\d+\z/
+      set.draw do
+        match 'page/:id' => 'pages#show', :id => /\d+\Z/
       end
     end
-  end
-
-  def test_route_requirements_with_invalid_http_method_is_invalid
     assert_raise ArgumentError do
-      set.draw do |map|
-        map.connect 'valid/route', :controller => 'pages', :action => 'show', :conditions => {:method => :invalid}
+      set.draw do
+        match 'page/:id' => 'pages#show', :id => /\d+\z/
       end
     end
   end
 
-  def test_route_requirements_with_options_method_condition_is_valid
+  def test_route_constraints_with_options_method_condition_is_valid
     assert_nothing_raised do
-      set.draw do |map|
-        map.connect 'valid/route', :controller => 'pages', :action => 'show', :conditions => {:method => :options}
-      end
-    end
-  end
-
-  def test_route_requirements_with_head_method_condition_is_invalid
-    assert_raise ArgumentError do
-      set.draw do |map|
-        map.connect 'valid/route', :controller => 'pages', :action => 'show', :conditions => {:method => :head}
+      set.draw do
+        match 'valid/route' => 'pages#show', :via => :options
       end
     end
   end
 
   def test_recognize_with_encoded_id_and_regex
-    set.draw do |map|
-      map.connect 'page/:id', :controller => 'pages', :action => 'show', :id => /[a-zA-Z0-9\+]+/
+    set.draw do
+      match 'page/:id' => 'pages#show', :id => /[a-zA-Z0-9\+]+/
     end
 
     assert_equal({:controller => 'pages', :action => 'show', :id => '10'}, set.recognize_path('/page/10'))
     assert_equal({:controller => 'pages', :action => 'show', :id => 'hello+world'}, set.recognize_path('/page/hello+world'))
   end
 
-  def test_recognize_with_conditions
-    set.draw do |map|
-      map.with_options(:controller => "people") do |people|
-        people.people  "/people",     :action => "index",   :conditions => { :method => :get }
-        people.connect "/people",     :action => "create",  :conditions => { :method => :post }
-        people.person  "/people/:id", :action => "show",    :conditions => { :method => :get }
-        people.connect "/people/:id", :action => "update",  :conditions => { :method => :put }
-        people.connect "/people/:id", :action => "destroy", :conditions => { :method => :delete }
-      end
+  def test_recognize_with_http_methods
+    set.draw do
+      get    "/people"     => "people#index", :as => "people"
+      post   "/people"     => "people#create"
+      get    "/people/:id" => "people#show",  :as => "person"
+      put    "/people/:id" => "people#update"
+      delete "/people/:id" => "people#destroy"
     end
 
     params = set.recognize_path("/people", :method => :get)
@@ -953,10 +921,10 @@ class RouteSetTest < ActiveSupport::TestCase
     params = set.recognize_path("/people", :method => :post)
     assert_equal("create", params[:action])
 
-    params = set.recognize_path("/people", :method => :put)
+    params = set.recognize_path("/people/5", :method => :put)
     assert_equal("update", params[:action])
 
-    assert_raise(ActionController::RoutingError) {
+    assert_raise(ActionController::UnknownHttpMethod) {
       set.recognize_path("/people", :method => :bacon)
     }
 
@@ -978,10 +946,9 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_recognize_with_alias_in_conditions
-    set.draw do |map|
-      map.people "/people", :controller => 'people', :action => "index",
-        :conditions => { :method => :get }
-      map.root   :people
+    set.draw do
+      match "/people" => 'people#index', :as => 'people', :via => :get
+      root :to => "people#index"
     end
 
     params = set.recognize_path("/people", :method => :get)
@@ -994,9 +961,8 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_typo_recognition
-    set.draw do |map|
-      map.connect 'articles/:year/:month/:day/:title',
-             :controller => 'articles', :action => 'permalink',
+    set.draw do
+      match 'articles/:year/:month/:day/:title' => 'articles#permalink',
              :year => /\d{4}/, :day => /\d{1,2}/, :month => /\d{1,2}/
     end
 
@@ -1010,22 +976,20 @@ class RouteSetTest < ActiveSupport::TestCase
 
   def test_routing_traversal_does_not_load_extra_classes
     assert !Object.const_defined?("Profiler__"), "Profiler should not be loaded"
-    set.draw do |map|
-      map.connect '/profile', :controller => 'profile'
+    set.draw do
+      match '/profile' => 'profile#index'
     end
 
-    params = set.recognize_path("/profile") rescue nil
+    set.recognize_path("/profile") rescue nil
 
     assert !Object.const_defined?("Profiler__"), "Profiler should not be loaded"
   end
 
   def test_recognize_with_conditions_and_format
-    set.draw do |map|
-      map.with_options(:controller => "people") do |people|
-        people.person  "/people/:id", :action => "show",    :conditions => { :method => :get }
-        people.connect "/people/:id", :action => "update",  :conditions => { :method => :put }
-        people.connect "/people/:id.:_format", :action => "show", :conditions => { :method => :get }
-      end
+    set.draw do
+      get "people/:id" => "people#show", :as => "person"
+      put "people/:id" => "people#update"
+      get "people/:id(.:format)" => "people#show"
     end
 
     params = set.recognize_path("/people/5", :method => :get)
@@ -1038,21 +1002,21 @@ class RouteSetTest < ActiveSupport::TestCase
     params = set.recognize_path("/people/5.png", :method => :get)
     assert_equal("show", params[:action])
     assert_equal("5", params[:id])
-    assert_equal("png", params[:_format])
+    assert_equal("png", params[:format])
   end
 
   def test_generate_with_default_action
-    set.draw do |map|
-      map.connect "/people", :controller => "people"
-      map.connect "/people/list", :controller => "people", :action => "list"
+    set.draw do
+      match "/people", :controller => "people", :action => "index"
+      match "/people/list", :controller => "people", :action => "list"
     end
 
-    url = set.generate(:controller => "people", :action => "list")
+    url = url_for(set, { :controller => "people", :action => "list" })
     assert_equal "/people/list", url
   end
 
   def test_root_map
-    set.draw { |map| map.root :controller => "people" }
+    set.draw { root :to => 'people#index' }
 
     params = set.recognize_path("", :method => :get)
     assert_equal("people", params[:controller])
@@ -1060,10 +1024,10 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_namespace
-    set.draw do |map|
+    set.draw do
 
-      map.namespace 'api' do |api|
-        api.route 'inventory', :controller => "products", :action => 'inventory'
+      namespace 'api' do
+        match 'inventory' => 'products#inventory'
       end
 
     end
@@ -1074,12 +1038,10 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_namespaced_root_map
-    set.draw do |map|
-
-      map.namespace 'api' do |api|
-        api.root :controller => "products"
+    set.draw do
+      namespace 'api' do
+        root :to => 'products#index'
       end
-
     end
 
     params = set.recognize_path("/api", :method => :get)
@@ -1088,9 +1050,9 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_namespace_with_path_prefix
-    set.draw do |map|
-      map.namespace 'api', :path_prefix => 'prefix' do |api|
-        api.route 'inventory', :controller => "products", :action => 'inventory'
+    set.draw do
+      scope :module => "api", :path => "prefix" do
+        match 'inventory' => 'products#inventory'
       end
     end
 
@@ -1100,9 +1062,9 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_namespace_with_blank_path_prefix
-    set.draw do |map|
-      map.namespace 'api', :path_prefix => '' do |api|
-        api.route 'inventory', :controller => "products", :action => 'inventory'
+    set.draw do
+      scope :module => "api", :path => "" do
+        match 'inventory' => 'products#inventory'
       end
     end
 
@@ -1112,128 +1074,129 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_generate_changes_controller_module
-    set.draw { |map| map.connect ':controller/:action/:id' }
+    set.draw { match ':controller/:action/:id' }
     current = { :controller => "bling/bloop", :action => "bap", :id => 9 }
-    url = set.generate({:controller => "foo/bar", :action => "baz", :id => 7}, current)
-    assert_equal "/foo/bar/baz/7", url
-  end
 
-  # def test_id_is_not_impossibly_sticky
-  #   set.draw do |map|
-  #     map.connect 'foo/:number', :controller => "people", :action => "index"
-  #     map.connect ':controller/:action/:id'
-  #   end
-  #
-  #   url = set.generate({:controller => "people", :action => "index", :number => 3},
-  #     {:controller => "people", :action => "index", :id => "21"})
-  #   assert_equal "/foo/3", url
-  # end
+    assert_equal "/foo/bar/baz/7",
+        url_for(set, { :controller => "foo/bar", :action => "baz", :id => 7 }, current)
+  end
 
   def test_id_is_sticky_when_it_ought_to_be
-    set.draw do |map|
-      map.connect ':controller/:id/:action'
+    set.draw do
+      match ':controller/:id/:action'
     end
 
-    url = set.generate({:action => "destroy"}, {:controller => "people", :action => "show", :id => "7"})
+    url = url_for(set, { :action => "destroy" }, { :controller => "people", :action => "show", :id => "7" })
     assert_equal "/people/7/destroy", url
   end
 
   def test_use_static_path_when_possible
-    set.draw do |map|
-      map.connect 'about', :controller => "welcome", :action => "about"
-      map.connect ':controller/:action/:id'
+    set.draw do
+      match 'about' => "welcome#about"
+      match ':controller/:action/:id'
     end
 
-    url = set.generate({:controller => "welcome", :action => "about"},
-      {:controller => "welcome", :action => "get", :id => "7"})
+    url = url_for(set, { :controller => "welcome", :action => "about" },
+      { :controller => "welcome", :action => "get", :id => "7" })
+
     assert_equal "/about", url
   end
 
   def test_generate
-    set.draw { |map| map.connect ':controller/:action/:id' }
+    set.draw { match ':controller/:action/:id' }
 
     args = { :controller => "foo", :action => "bar", :id => "7", :x => "y" }
-    assert_equal "/foo/bar/7?x=y", set.generate(args)
+    assert_equal "/foo/bar/7?x=y",     url_for(set, args)
     assert_equal ["/foo/bar/7", [:x]], set.generate_extras(args)
     assert_equal [:x], set.extra_keys(args)
   end
 
   def test_generate_with_path_prefix
-    set.draw { |map| map.connect ':controller/:action/:id', :path_prefix => 'my' }
+    set.draw do
+      scope "my" do
+        match ':controller(/:action(/:id))'
+      end
+    end
 
     args = { :controller => "foo", :action => "bar", :id => "7", :x => "y" }
-    assert_equal "/my/foo/bar/7?x=y", set.generate(args)
+    assert_equal "/my/foo/bar/7?x=y", url_for(set, args)
   end
 
   def test_generate_with_blank_path_prefix
-    set.draw { |map| map.connect ':controller/:action/:id', :path_prefix => '' }
+    set.draw do
+      scope "" do
+        match ':controller(/:action(/:id))'
+      end
+    end
 
     args = { :controller => "foo", :action => "bar", :id => "7", :x => "y" }
-    assert_equal "/foo/bar/7?x=y", set.generate(args)
+    assert_equal "/foo/bar/7?x=y", url_for(set, args)
   end
 
   def test_named_routes_are_never_relative_to_modules
-    set.draw do |map|
-      map.connect "/connection/manage/:action", :controller => 'connection/manage'
-      map.connect "/connection/connection", :controller => "connection/connection"
-      map.family_connection "/connection", :controller => "connection"
+    set.draw do
+      match "/connection/manage(/:action)" => 'connection/manage#index'
+      match "/connection/connection" => "connection/connection#index"
+      match '/connection' => 'connection#index', :as => 'family_connection'
     end
 
-    url = set.generate({:controller => "connection"}, {:controller => 'connection/manage'})
+    url = url_for(set, { :controller => "connection" }, { :controller => 'connection/manage' })
     assert_equal "/connection/connection", url
 
-    url = set.generate({:use_route => :family_connection, :controller => "connection"}, {:controller => 'connection/manage'})
+    url = url_for(set, { :use_route => :family_connection, :controller => "connection" }, { :controller => 'connection/manage' })
     assert_equal "/connection", url
   end
 
   def test_action_left_off_when_id_is_recalled
-    set.draw do |map|
-      map.connect ':controller/:action/:id'
+    set.draw do
+      match ':controller(/:action(/:id))'
     end
-    assert_equal '/books', set.generate(
+    assert_equal '/books', url_for(set,
       {:controller => 'books', :action => 'index'},
       {:controller => 'books', :action => 'show', :id => '10'}
     )
   end
 
   def test_query_params_will_be_shown_when_recalled
-    set.draw do |map|
-      map.connect 'show_weblog/:parameter', :controller => 'weblog', :action => 'show'
-      map.connect ':controller/:action/:id'
+    set.draw do
+      match 'show_weblog/:parameter' => 'weblog#show'
+      match ':controller(/:action(/:id))'
     end
-    assert_equal '/weblog/edit?parameter=1', set.generate(
+    assert_equal '/weblog/edit?parameter=1', url_for(set,
       {:action => 'edit', :parameter => 1},
       {:controller => 'weblog', :action => 'show', :parameter => 1}
     )
   end
 
   def test_format_is_not_inherit
-    set.draw do |map|
-      map.connect '/posts.:format', :controller => 'posts'
+    set.draw do
+      match '/posts(.:format)' => 'posts#index'
     end
 
-    assert_equal '/posts', set.generate(
+    assert_equal '/posts', url_for(set,
       {:controller => 'posts'},
       {:controller => 'posts', :action => 'index', :format => 'xml'}
     )
 
-    assert_equal '/posts.xml', set.generate(
+    assert_equal '/posts.xml', url_for(set,
       {:controller => 'posts', :format => 'xml'},
       {:controller => 'posts', :action => 'index', :format => 'xml'}
     )
   end
 
   def test_expiry_determination_should_consider_values_with_to_param
-    set.draw { |map| map.connect 'projects/:project_id/:controller/:action' }
-    assert_equal '/projects/1/weblog/show', set.generate(
-      {:action => 'show', :project_id => 1},
-      {:controller => 'weblog', :action => 'show', :project_id => '1'})
+    set.draw { match 'projects/:project_id/:controller/:action' }
+    assert_equal '/projects/1/weblog/show', url_for(set,
+      { :action => 'show', :project_id => 1 },
+      { :controller => 'weblog', :action => 'show', :project_id => '1' })
   end
 
   def test_named_route_in_nested_resource
-    set.draw do |map|
-      map.resources :projects do |project|
-        project.milestones 'milestones', :controller => 'milestones', :action => 'index'
+    set.draw do
+      resources :projects do
+        member do
+          match 'milestones' => 'milestones#index', :as => 'milestones'
+        end
       end
     end
 
@@ -1244,9 +1207,9 @@ class RouteSetTest < ActiveSupport::TestCase
 
   def test_setting_root_in_namespace_using_symbol
     assert_nothing_raised do
-      set.draw do |map|
-        map.namespace :admin do |admin|
-          admin.root :controller => 'home'
+      set.draw do
+        namespace :admin do
+          root :to => "home#index"
         end
       end
     end
@@ -1254,51 +1217,47 @@ class RouteSetTest < ActiveSupport::TestCase
 
   def test_setting_root_in_namespace_using_string
     assert_nothing_raised do
-      set.draw do |map|
-        map.namespace 'admin' do |admin|
-          admin.root :controller => 'home'
+      set.draw do
+        namespace 'admin' do
+          root :to => "home#index"
         end
       end
     end
   end
 
-  def test_route_requirements_with_unsupported_regexp_options_must_error
+  def test_route_constraints_with_unsupported_regexp_options_must_error
     assert_raise ArgumentError do
-      set.draw do |map|
-        map.connect 'page/:name', :controller => 'pages',
-          :action => 'show',
-          :requirements => {:name => /(david|jamis)/m}
+      set.draw do
+        match 'page/:name' => 'pages#show',
+          :constraints => { :name => /(david|jamis)/m }
       end
     end
   end
 
-  def test_route_requirements_with_supported_options_must_not_error
+  def test_route_constraints_with_supported_options_must_not_error
     assert_nothing_raised do
-      set.draw do |map|
-        map.connect 'page/:name', :controller => 'pages',
-          :action => 'show',
-          :requirements => {:name => /(david|jamis)/i}
+      set.draw do
+        match 'page/:name' => 'pages#show',
+          :constraints => { :name => /(david|jamis)/i }
       end
     end
     assert_nothing_raised do
-      set.draw do |map|
-        map.connect 'page/:name', :controller => 'pages',
-          :action => 'show',
-          :requirements => {:name => / # Desperately overcommented regexp
+      set.draw do
+        match 'page/:name' => 'pages#show',
+          :constraints => { :name => / # Desperately overcommented regexp
                                       ( #Either
                                        david #The Creator
                                       | #Or
                                         jamis #The Deployer
-                                      )/x}
+                                      )/x }
       end
     end
   end
 
   def test_route_requirement_recognize_with_ignore_case
-    set.draw do |map|
-      map.connect 'page/:name', :controller => 'pages',
-        :action => 'show',
-        :requirements => {:name => /(david|jamis)/i}
+    set.draw do
+      match 'page/:name' => 'pages#show',
+        :constraints => {:name => /(david|jamis)/i}
     end
     assert_equal({:controller => 'pages', :action => 'show', :name => 'jamis'}, set.recognize_path('/page/jamis'))
     assert_raise ActionController::RoutingError do
@@ -1308,26 +1267,24 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_route_requirement_generate_with_ignore_case
-    set.draw do |map|
-      map.connect 'page/:name', :controller => 'pages',
-        :action => 'show',
-        :requirements => {:name => /(david|jamis)/i}
+    set.draw do
+      match 'page/:name' => 'pages#show',
+        :constraints => {:name => /(david|jamis)/i}
     end
 
-    url = set.generate({:controller => 'pages', :action => 'show', :name => 'david'})
+    url = url_for(set, { :controller => 'pages', :action => 'show', :name => 'david' })
     assert_equal "/page/david", url
     assert_raise ActionController::RoutingError do
-      url = set.generate({:controller => 'pages', :action => 'show', :name => 'davidjamis'})
+      url_for(set, { :controller => 'pages', :action => 'show', :name => 'davidjamis' })
     end
-    url = set.generate({:controller => 'pages', :action => 'show', :name => 'JAMIS'})
+    url = url_for(set, { :controller => 'pages', :action => 'show', :name => 'JAMIS' })
     assert_equal "/page/JAMIS", url
   end
 
   def test_route_requirement_recognize_with_extended_syntax
-    set.draw do |map|
-      map.connect 'page/:name', :controller => 'pages',
-        :action => 'show',
-        :requirements => {:name => / # Desperately overcommented regexp
+    set.draw do
+      match 'page/:name' => 'pages#show',
+        :constraints => {:name => / # Desperately overcommented regexp
                                     ( #Either
                                      david #The Creator
                                     | #Or
@@ -1344,33 +1301,10 @@ class RouteSetTest < ActiveSupport::TestCase
     end
   end
 
-  def test_route_requirement_generate_with_extended_syntax
-    set.draw do |map|
-      map.connect 'page/:name', :controller => 'pages',
-        :action => 'show',
-        :requirements => {:name => / # Desperately overcommented regexp
-                                    ( #Either
-                                     david #The Creator
-                                    | #Or
-                                      jamis #The Deployer
-                                    )/x}
-    end
-
-    url = set.generate({:controller => 'pages', :action => 'show', :name => 'david'})
-    assert_equal "/page/david", url
-    assert_raise ActionController::RoutingError do
-      url = set.generate({:controller => 'pages', :action => 'show', :name => 'davidjamis'})
-    end
-    assert_raise ActionController::RoutingError do
-      url = set.generate({:controller => 'pages', :action => 'show', :name => 'JAMIS'})
-    end
-  end
-
-  def test_route_requirement_generate_with_xi_modifiers
-    set.draw do |map|
-      map.connect 'page/:name', :controller => 'pages',
-        :action => 'show',
-        :requirements => {:name => / # Desperately overcommented regexp
+  def test_route_requirement_with_xi_modifiers
+    set.draw do
+      match 'page/:name' => 'pages#show',
+        :constraints => {:name => / # Desperately overcommented regexp
                                     ( #Either
                                      david #The Creator
                                     | #Or
@@ -1378,98 +1312,83 @@ class RouteSetTest < ActiveSupport::TestCase
                                     )/xi}
     end
 
-    url = set.generate({:controller => 'pages', :action => 'show', :name => 'JAMIS'})
-    assert_equal "/page/JAMIS", url
-  end
+    assert_equal({:controller => 'pages', :action => 'show', :name => 'JAMIS'},
+        set.recognize_path('/page/JAMIS'))
 
-  def test_route_requirement_recognize_with_xi_modifiers
-    set.draw do |map|
-      map.connect 'page/:name', :controller => 'pages',
-        :action => 'show',
-        :requirements => {:name => / # Desperately overcommented regexp
-                                    ( #Either
-                                     david #The Creator
-                                    | #Or
-                                      jamis #The Deployer
-                                    )/xi}
-    end
-    assert_equal({:controller => 'pages', :action => 'show', :name => 'JAMIS'}, set.recognize_path('/page/JAMIS'))
+    assert_equal "/page/JAMIS",
+        url_for(set, { :controller => 'pages', :action => 'show', :name => 'JAMIS' })
   end
 
   def test_routes_with_symbols
-    set.draw do |map|
-      map.connect 'unnamed', :controller => :pages, :action => :show, :name => :as_symbol
-      map.named   'named',   :controller => :pages, :action => :show, :name => :as_symbol
+    set.draw do
+      match 'unnamed', :controller => :pages, :action => :show, :name => :as_symbol
+      match 'named'  , :controller => :pages, :action => :show, :name => :as_symbol, :as => :named
     end
     assert_equal({:controller => 'pages', :action => 'show', :name => :as_symbol}, set.recognize_path('/unnamed'))
     assert_equal({:controller => 'pages', :action => 'show', :name => :as_symbol}, set.recognize_path('/named'))
   end
 
   def test_regexp_chunk_should_add_question_mark_for_optionals
-    set.draw do |map|
-      map.connect '/', :controller => 'foo'
-      map.connect '/hello', :controller => 'bar'
+    set.draw do
+      match '/' => 'foo#index'
+      match '/hello' => 'bar#index'
     end
 
-    assert_equal '/', set.generate(:controller => 'foo')
-    assert_equal '/hello', set.generate(:controller => 'bar')
+    assert_equal '/',      url_for(set, { :controller => 'foo' })
+    assert_equal '/hello', url_for(set, { :controller => 'bar' })
 
     assert_equal({:controller => "foo", :action => "index"}, set.recognize_path('/'))
     assert_equal({:controller => "bar", :action => "index"}, set.recognize_path('/hello'))
   end
 
   def test_assign_route_options_with_anchor_chars
-    set.draw do |map|
-      map.connect '/cars/:action/:person/:car/', :controller => 'cars'
+    set.draw do
+      match '/cars/:action/:person/:car/', :controller => 'cars'
     end
 
-    assert_equal '/cars/buy/1/2', set.generate(:controller => 'cars', :action => 'buy', :person => '1', :car => '2')
+    assert_equal '/cars/buy/1/2', url_for(set, { :controller => 'cars', :action => 'buy', :person => '1', :car => '2' })
 
     assert_equal({:controller => "cars", :action => "buy", :person => "1", :car => "2"}, set.recognize_path('/cars/buy/1/2'))
   end
 
   def test_segmentation_of_dot_path
-    set.draw do |map|
-      map.connect '/books/:action.rss', :controller => 'books'
+    set.draw do
+      match '/books/:action.rss', :controller => 'books'
     end
 
-    assert_equal '/books/list.rss', set.generate(:controller => 'books', :action => 'list')
+    assert_equal '/books/list.rss', url_for(set, { :controller => 'books', :action => 'list' })
 
     assert_equal({:controller => "books", :action => "list"}, set.recognize_path('/books/list.rss'))
   end
 
   def test_segmentation_of_dynamic_dot_path
-    set.draw do |map|
-      map.connect '/books/:action.:format', :controller => 'books'
+    set.draw do
+      match '/books(/:action(.:format))', :controller => 'books'
     end
 
-    assert_equal '/books/list.rss', set.generate(:controller => 'books', :action => 'list', :format => 'rss')
-    assert_equal '/books/list.xml', set.generate(:controller => 'books', :action => 'list', :format => 'xml')
-    assert_equal '/books/list', set.generate(:controller => 'books', :action => 'list')
-    assert_equal '/books', set.generate(:controller => 'books', :action => 'index')
+    assert_equal '/books/list.rss', url_for(set, { :controller => 'books', :action => 'list', :format => 'rss' })
+    assert_equal '/books/list.xml', url_for(set, { :controller => 'books', :action => 'list', :format => 'xml' })
+    assert_equal '/books/list',     url_for(set, { :controller => 'books', :action => 'list' })
+    assert_equal '/books',          url_for(set, { :controller => 'books', :action => 'index' })
 
     assert_equal({:controller => "books", :action => "list", :format => "rss"}, set.recognize_path('/books/list.rss'))
     assert_equal({:controller => "books", :action => "list", :format => "xml"}, set.recognize_path('/books/list.xml'))
-    assert_equal({:controller => "books", :action => "list"}, set.recognize_path('/books/list'))
+    assert_equal({:controller => "books", :action => "list"},  set.recognize_path('/books/list'))
     assert_equal({:controller => "books", :action => "index"}, set.recognize_path('/books'))
   end
 
   def test_slashes_are_implied
-    ['/:controller/:action/:id/', '/:controller/:action/:id',
-      ':controller/:action/:id', '/:controller/:action/:id/'
-    ].each do |path|
-      @set = nil
-      set.draw { |map| map.connect(path) }
+    @set = nil
+    set.draw { match("/:controller(/:action(/:id))") }
 
-      assert_equal '/content', set.generate(:controller => 'content', :action => 'index')
-      assert_equal '/content/list', set.generate(:controller => 'content', :action => 'list')
-      assert_equal '/content/show/1', set.generate(:controller => 'content', :action => 'show', :id => '1')
+    assert_equal '/content',        url_for(set, { :controller => 'content', :action => 'index' })
+    assert_equal '/content/list',   url_for(set, { :controller => 'content', :action => 'list' })
+    assert_equal '/content/show/1', url_for(set, { :controller => 'content', :action => 'show', :id => '1' })
 
-      assert_equal({:controller => "content", :action => "index"}, set.recognize_path('/content'))
-      assert_equal({:controller => "content", :action => "index"}, set.recognize_path('/content/index'))
-      assert_equal({:controller => "content", :action => "list"}, set.recognize_path('/content/list'))
-      assert_equal({:controller => "content", :action => "show", :id => "1"}, set.recognize_path('/content/show/1'))
-    end
+    assert_equal({:controller => "content", :action => "index"}, set.recognize_path('/content'))
+    assert_equal({:controller => "content", :action => "index"}, set.recognize_path('/content/index'))
+    assert_equal({:controller => "content", :action => "list"},  set.recognize_path('/content/list'))
+    assert_equal({:controller => "content", :action => "show", :id => "1"}, set.recognize_path('/content/show/1'))
   end
 
   def test_default_route_recognition
@@ -1493,102 +1412,102 @@ class RouteSetTest < ActiveSupport::TestCase
   end
 
   def test_default_route_should_omit_default_action
-    assert_equal '/accounts', default_route_set.generate({:controller => 'accounts', :action => 'index'})
+    assert_equal '/accounts', url_for(default_route_set, { :controller => 'accounts', :action => 'index' })
   end
 
   def test_default_route_should_include_default_action_when_id_present
-    assert_equal '/accounts/index/20', default_route_set.generate({:controller => 'accounts', :action => 'index', :id => '20'})
+    assert_equal '/accounts/index/20', url_for(default_route_set, { :controller => 'accounts', :action => 'index', :id => '20' })
   end
 
   def test_default_route_should_work_with_action_but_no_id
-    assert_equal '/accounts/list_all', default_route_set.generate({:controller => 'accounts', :action => 'list_all'})
+    assert_equal '/accounts/list_all', url_for(default_route_set, { :controller => 'accounts', :action => 'list_all' })
   end
 
   def test_default_route_should_uri_escape_pluses
     expected = { :controller => 'pages', :action => 'show', :id => 'hello world' }
     assert_equal expected, default_route_set.recognize_path('/pages/show/hello%20world')
-    assert_equal '/pages/show/hello%20world', default_route_set.generate(expected, expected)
+    assert_equal '/pages/show/hello%20world', url_for(default_route_set, expected)
 
     expected[:id] = 'hello+world'
     assert_equal expected, default_route_set.recognize_path('/pages/show/hello+world')
     assert_equal expected, default_route_set.recognize_path('/pages/show/hello%2Bworld')
-    assert_equal '/pages/show/hello+world', default_route_set.generate(expected, expected)
+    assert_equal '/pages/show/hello+world', url_for(default_route_set, expected)
   end
 
   def test_build_empty_query_string
-    assert_uri_equal '/foo', default_route_set.generate({:controller => 'foo'})
+    assert_uri_equal '/foo', url_for(default_route_set, { :controller => 'foo' })
   end
 
   def test_build_query_string_with_nil_value
-    assert_uri_equal '/foo', default_route_set.generate({:controller => 'foo', :x => nil})
+    assert_uri_equal '/foo', url_for(default_route_set, { :controller => 'foo', :x => nil })
   end
 
   def test_simple_build_query_string
-    assert_uri_equal '/foo?x=1&y=2', default_route_set.generate({:controller => 'foo', :x => '1', :y => '2'})
+    assert_uri_equal '/foo?x=1&y=2', url_for(default_route_set, { :controller => 'foo', :x => '1', :y => '2' })
   end
 
   def test_convert_ints_build_query_string
-    assert_uri_equal '/foo?x=1&y=2', default_route_set.generate({:controller => 'foo', :x => 1, :y => 2})
+    assert_uri_equal '/foo?x=1&y=2', url_for(default_route_set, { :controller => 'foo', :x => 1, :y => 2 })
   end
 
   def test_escape_spaces_build_query_string
-    assert_uri_equal '/foo?x=hello+world&y=goodbye+world', default_route_set.generate({:controller => 'foo', :x => 'hello world', :y => 'goodbye world'})
+    assert_uri_equal '/foo?x=hello+world&y=goodbye+world', url_for(default_route_set, { :controller => 'foo', :x => 'hello world', :y => 'goodbye world' })
   end
 
   def test_expand_array_build_query_string
-    assert_uri_equal '/foo?x[]=1&x[]=2', default_route_set.generate({:controller => 'foo', :x => [1, 2]})
+    assert_uri_equal '/foo?x%5B%5D=1&x%5B%5D=2', url_for(default_route_set, { :controller => 'foo', :x => [1, 2] })
   end
 
   def test_escape_spaces_build_query_string_selected_keys
-    assert_uri_equal '/foo?x=hello+world', default_route_set.generate({:controller => 'foo', :x => 'hello world'})
+    assert_uri_equal '/foo?x=hello+world', url_for(default_route_set, { :controller => 'foo', :x => 'hello world' })
   end
 
   def test_generate_with_default_params
-    set.draw do |map|
-      map.connect 'dummy/page/:page', :controller => 'dummy'
-      map.connect 'dummy/dots/page.:page', :controller => 'dummy', :action => 'dots'
-      map.connect 'ibocorp/:page', :controller => 'ibocorp',
-                                   :requirements => { :page => /\d+/ },
-                                   :defaults => { :page => 1 }
+    set.draw do
+      match 'dummy/page/:page' => 'dummy#show'
+      match 'dummy/dots/page.:page' => 'dummy#dots'
+      match 'ibocorp(/:page)' => 'ibocorp#show',
+                             :constraints => { :page => /\d+/ },
+                             :defaults => { :page => 1 }
 
-      map.connect ':controller/:action/:id'
+      match ':controller/:action/:id'
     end
 
-    assert_equal '/ibocorp', set.generate({:controller => 'ibocorp', :page => 1})
+    assert_equal '/ibocorp', url_for(set, { :controller => 'ibocorp', :action => "show", :page => 1 })
   end
 
   def test_generate_with_optional_params_recalls_last_request
-    set.draw do |map|
-      map.connect "blog/", :controller => "blog", :action => "index"
+    set.draw do
+      match "blog/", :controller => "blog", :action => "index"
 
-      map.connect "blog/:year/:month/:day",
-                  :controller => "blog",
-                  :action => "show_date",
-                  :requirements => { :year => /(19|20)\d\d/, :month => /[01]?\d/, :day => /[0-3]?\d/ },
-                  :day => nil, :month => nil
+      match "blog(/:year(/:month(/:day)))",
+            :controller => "blog",
+            :action => "show_date",
+            :constraints => { :year => /(19|20)\d\d/, :month => /[01]?\d/, :day => /[0-3]?\d/ },
+            :day => nil, :month => nil
 
-      map.connect "blog/show/:id", :controller => "blog", :action => "show", :id => /\d+/
-      map.connect "blog/:controller/:action/:id"
-      map.connect "*anything", :controller => "blog", :action => "unknown_request"
+      match "blog/show/:id", :controller => "blog", :action => "show", :id => /\d+/
+      match "blog/:controller/:action(/:id)"
+      match "*anything", :controller => "blog", :action => "unknown_request"
     end
 
     assert_equal({:controller => "blog", :action => "index"}, set.recognize_path("/blog"))
     assert_equal({:controller => "blog", :action => "show", :id => "123"}, set.recognize_path("/blog/show/123"))
-    assert_equal({:controller => "blog", :action => "show_date", :year => "2004"}, set.recognize_path("/blog/2004"))
-    assert_equal({:controller => "blog", :action => "show_date", :year => "2004", :month => "12"}, set.recognize_path("/blog/2004/12"))
+    assert_equal({:controller => "blog", :action => "show_date", :year => "2004", :day => nil, :month => nil }, set.recognize_path("/blog/2004"))
+    assert_equal({:controller => "blog", :action => "show_date", :year => "2004", :month => "12", :day => nil }, set.recognize_path("/blog/2004/12"))
     assert_equal({:controller => "blog", :action => "show_date", :year => "2004", :month => "12", :day => "25"}, set.recognize_path("/blog/2004/12/25"))
     assert_equal({:controller => "articles", :action => "edit", :id => "123"}, set.recognize_path("/blog/articles/edit/123"))
     assert_equal({:controller => "articles", :action => "show_stats"}, set.recognize_path("/blog/articles/show_stats"))
-    assert_equal({:controller => "blog", :action => "unknown_request", :anything => ["blog", "wibble"]}, set.recognize_path("/blog/wibble"))
-    assert_equal({:controller => "blog", :action => "unknown_request", :anything => ["junk"]}, set.recognize_path("/junk"))
+    assert_equal({:controller => "blog", :action => "unknown_request", :anything => "blog/wibble"}, set.recognize_path("/blog/wibble"))
+    assert_equal({:controller => "blog", :action => "unknown_request", :anything => "junk"}, set.recognize_path("/junk"))
 
     last_request = set.recognize_path("/blog/2006/07/28").freeze
     assert_equal({:controller => "blog",  :action => "show_date", :year => "2006", :month => "07", :day => "28"}, last_request)
-    assert_equal("/blog/2006/07/25", set.generate({:day => 25}, last_request))
-    assert_equal("/blog/2005", set.generate({:year => 2005}, last_request))
-    assert_equal("/blog/show/123", set.generate({:action => "show" , :id => 123}, last_request))
-    assert_equal("/blog/2006", set.generate({:year => 2006}, last_request))
-    assert_equal("/blog/2006", set.generate({:year => 2006, :month => nil}, last_request))
+    assert_equal("/blog/2006/07/25", url_for(set, { :day => 25 }, last_request))
+    assert_equal("/blog/2005",       url_for(set, { :year => 2005 }, last_request))
+    assert_equal("/blog/show/123",   url_for(set, { :action => "show" , :id => 123 }, last_request))
+    assert_equal("/blog/2006",       url_for(set, { :year => 2006 }, last_request))
+    assert_equal("/blog/2006",       url_for(set, { :year => 2006, :month => nil }, last_request))
   end
 
   private
@@ -1604,76 +1523,67 @@ class RouteSetTest < ActiveSupport::TestCase
 end
 
 class RackMountIntegrationTests < ActiveSupport::TestCase
+  include RoutingTestHelpers
+
   Model = Struct.new(:to_param)
 
-  Mapping = lambda { |map|
-    map.namespace :admin do |admin|
-      admin.resources :users
+  Mapping = lambda {
+    namespace :admin do
+      resources :users, :posts
     end
 
-    map.namespace 'api' do |api|
-      api.root :controller => 'users'
+    namespace 'api' do
+      root :to => 'users#index'
     end
 
-    map.connect 'blog/:year/:month/:day',
-                :controller => 'posts',
-                :action => 'show_date',
-                :requirements => { :year => /(19|20)\d\d/, :month => /[01]?\d/, :day => /[0-3]?\d/},
-                :day => nil,
-                :month => nil
+    match '/blog(/:year(/:month(/:day)))' => 'posts#show_date',
+      :constraints => {
+        :year => /(19|20)\d\d/,
+        :month => /[01]?\d/,
+        :day => /[0-3]?\d/
+      },
+      :day => nil,
+      :month => nil
 
-    map.blog('archive/:year', :controller => 'archive', :action => 'index',
+    match 'archive/:year', :controller => 'archive', :action => 'index',
       :defaults => { :year => nil },
-      :requirements => { :year => /\d{4}/ }
-    )
+      :constraints => { :year => /\d{4}/ },
+      :as => "blog"
 
-    map.resources :people
-    map.connect 'legacy/people', :controller => 'people', :action => 'index', :legacy => 'true'
+    resources :people
+    match 'legacy/people' => "people#index", :legacy => "true"
 
-    map.connect 'symbols', :controller => :symbols, :action => :show, :name => :as_symbol
-    map.connect 'id_default/:id', :controller => 'foo', :action => 'id_default', :id => 1
-    map.connect 'get_or_post', :controller => 'foo', :action => 'get_or_post', :conditions => { :method => [:get, :post] }
-    map.connect 'optional/:optional', :controller => 'posts', :action => 'index'
-    map.project 'projects/:project_id', :controller => 'project'
-    map.connect 'clients', :controller => 'projects', :action => 'index'
+    match 'symbols', :controller => :symbols, :action => :show, :name => :as_symbol
+    match 'id_default(/:id)' => "foo#id_default", :id => 1
+    match 'get_or_post' => "foo#get_or_post", :via => [:get, :post]
+    match 'optional/:optional' => "posts#index"
+    match 'projects/:project_id' => "project#index", :as => "project"
+    match 'clients' => "projects#index"
 
-    map.connect 'ignorecase/geocode/:postalcode', :controller => 'geocode',
-                  :action => 'show', :postalcode => /hx\d\d-\d[a-z]{2}/i
-    map.geocode 'extended/geocode/:postalcode', :controller => 'geocode',
-                  :action => 'show',:requirements => {
+    match 'ignorecase/geocode/:postalcode' => 'geocode#show', :postalcode => /hx\d\d-\d[a-z]{2}/i
+    match 'extended/geocode/:postalcode' => 'geocode#show',:constraints => {
                   :postalcode => /# Postcode format
                                   \d{5} #Prefix
                                   (-\d{4})? #Suffix
                                   /x
-                  }
+                  }, :as => "geocode"
 
-    map.connect '', :controller => 'news', :format => nil
-    map.connect 'news.:format', :controller => 'news'
+    match 'news(.:format)' => "news#index"
 
-    map.connect 'comment/:id/:action', :controller => 'comments', :action => 'show'
-    map.connect 'ws/:controller/:action/:id', :ws => true
-    map.connect 'account/:action', :controller => :account, :action => :subscription
-    map.connect 'pages/:page_id/:controller/:action/:id'
-    map.connect ':controller/ping', :action => 'ping'
-    map.connect ':controller/:action/:id'
+    match 'comment/:id(/:action)' => "comments#show"
+    match 'ws/:controller(/:action(/:id))', :ws => true
+    match 'account(/:action)' => "account#subscription"
+    match 'pages/:page_id/:controller(/:action(/:id))'
+    match ':controller/ping', :action => 'ping'
+    match ':controller(/:action(/:id))(.:format)'
+    root :to => "news#index"
   }
 
   def setup
-    @routes = ActionController::Routing::RouteSet.new
+    @routes = ActionDispatch::Routing::RouteSet.new
     @routes.draw(&Mapping)
   end
 
-  def test_add_route
-    @routes.clear!
-
-    assert_raise(ActionController::RoutingError) do
-      @routes.draw do |map|
-        map.path 'file/*path', :controller => 'content', :action => 'show_file', :path => %w(fake default)
-        map.connect ':controller/:action/:id'
-      end
-    end
-  end
-
   def test_recognize_path
     assert_equal({:controller => 'admin/users', :action => 'index'}, @routes.recognize_path('/admin/users', :method => :get))
     assert_equal({:controller => 'admin/users', :action => 'create'}, @routes.recognize_path('/admin/users', :method => :post))
@@ -1689,8 +1599,8 @@ class RackMountIntegrationTests < ActiveSupport::TestCase
     assert_equal({:controller => 'api/users', :action => 'index'}, @routes.recognize_path('/api', :method => :get))
     assert_equal({:controller => 'api/users', :action => 'index'}, @routes.recognize_path('/api/', :method => :get))
 
-    assert_equal({:controller => 'posts', :action => 'show_date', :year => '2009'}, @routes.recognize_path('/blog/2009', :method => :get))
-    assert_equal({:controller => 'posts', :action => 'show_date', :year => '2009', :month => '01'}, @routes.recognize_path('/blog/2009/01', :method => :get))
+    assert_equal({:controller => 'posts', :action => 'show_date', :year => '2009', :month => nil, :day => nil }, @routes.recognize_path('/blog/2009', :method => :get))
+    assert_equal({:controller => 'posts', :action => 'show_date', :year => '2009', :month => '01', :day => nil }, @routes.recognize_path('/blog/2009/01', :method => :get))
     assert_equal({:controller => 'posts', :action => 'show_date', :year => '2009', :month => '01', :day => '01'}, @routes.recognize_path('/blog/2009/01/01', :method => :get))
 
     assert_equal({:controller => 'archive', :action => 'index', :year => '2010'}, @routes.recognize_path('/archive/2010'))
@@ -1710,7 +1620,7 @@ class RackMountIntegrationTests < ActiveSupport::TestCase
     assert_equal({:controller => 'symbols', :action => 'show', :name => :as_symbol}, @routes.recognize_path('/symbols'))
     assert_equal({:controller => 'foo', :action => 'id_default', :id => '1'}, @routes.recognize_path('/id_default/1'))
     assert_equal({:controller => 'foo', :action => 'id_default', :id => '2'}, @routes.recognize_path('/id_default/2'))
-    assert_equal({:controller => 'foo', :action => 'id_default', :id => '1'}, @routes.recognize_path('/id_default'))
+    assert_equal({:controller => 'foo', :action => 'id_default', :id => 1 }, @routes.recognize_path('/id_default'))
     assert_equal({:controller => 'foo', :action => 'get_or_post'}, @routes.recognize_path('/get_or_post', :method => :get))
     assert_equal({:controller => 'foo', :action => 'get_or_post'}, @routes.recognize_path('/get_or_post', :method => :post))
     assert_raise(ActionController::ActionControllerError) { @routes.recognize_path('/get_or_post', :method => :put) }
@@ -1743,126 +1653,118 @@ class RackMountIntegrationTests < ActiveSupport::TestCase
     assert_equal({:controller => 'geocode', :action => 'show', :postalcode => '12345-1234'}, @routes.recognize_path('/extended/geocode/12345-1234'))
     assert_equal({:controller => 'geocode', :action => 'show', :postalcode => '12345'}, @routes.recognize_path('/extended/geocode/12345'))
 
-    assert_equal({:controller => 'news', :action => 'index', :format => nil}, @routes.recognize_path('/', :method => :get))
+    assert_equal({:controller => 'news', :action => 'index' }, @routes.recognize_path('/', :method => :get))
     assert_equal({:controller => 'news', :action => 'index', :format => 'rss'}, @routes.recognize_path('/news.rss', :method => :get))
 
     assert_raise(ActionController::RoutingError) { @routes.recognize_path('/none', :method => :get) }
   end
 
   def test_generate
-    assert_equal '/admin/users', @routes.generate(:use_route => 'admin_users')
-    assert_equal '/admin/users', @routes.generate(:controller => 'admin/users')
-    assert_equal '/admin/users', @routes.generate(:controller => 'admin/users', :action => 'index')
-    assert_equal '/admin/users', @routes.generate({:action => 'index'}, {:controller => 'admin/users'})
-    assert_equal '/admin/users', @routes.generate({:controller => 'users', :action => 'index'}, {:controller => 'admin/accounts'})
-    assert_equal '/people', @routes.generate({:controller => '/people', :action => 'index'}, {:controller => 'admin/accounts'})
-
-    assert_equal '/admin/posts', @routes.generate({:controller => 'admin/posts'})
-    assert_equal '/admin/posts/new', @routes.generate({:controller => 'admin/posts', :action => 'new'})
-
-    assert_equal '/blog/2009', @routes.generate(:controller => 'posts', :action => 'show_date', :year => 2009)
-    assert_equal '/blog/2009/1', @routes.generate(:controller => 'posts', :action => 'show_date', :year => 2009, :month => 1)
-    assert_equal '/blog/2009/1/1', @routes.generate(:controller => 'posts', :action => 'show_date', :year => 2009, :month => 1, :day => 1)
-
-    assert_equal '/archive/2010', @routes.generate(:controller => 'archive', :action => 'index', :year => '2010')
-    assert_equal '/archive', @routes.generate(:controller => 'archive', :action => 'index')
-    assert_equal '/archive?year=january', @routes.generate(:controller => 'archive', :action => 'index', :year => 'january')
-
-    assert_equal '/people', @routes.generate(:use_route => 'people')
-    assert_equal '/people', @routes.generate(:use_route => 'people', :controller => 'people', :action => 'index')
-    assert_equal '/people.xml', @routes.generate(:use_route => 'people', :controller => 'people', :action => 'index', :format => 'xml')
-    assert_equal '/people', @routes.generate({:use_route => 'people', :controller => 'people', :action => 'index'}, {:controller => 'people', :action => 'index'})
-    assert_equal '/people', @routes.generate(:controller => 'people')
-    assert_equal '/people', @routes.generate(:controller => 'people', :action => 'index')
-    assert_equal '/people', @routes.generate({:action => 'index'}, {:controller => 'people'})
-    assert_equal '/people', @routes.generate({:action => 'index'}, {:controller => 'people', :action => 'show', :id => '1'})
-    assert_equal '/people', @routes.generate({:controller => 'people', :action => 'index'}, {:controller => 'people', :action => 'show', :id => '1'})
-    assert_equal '/people', @routes.generate({}, {:controller => 'people', :action => 'index'})
-    assert_equal '/people/1', @routes.generate({:controller => 'people', :action => 'show'}, {:controller => 'people', :action => 'show', :id => '1'})
-    assert_equal '/people/new', @routes.generate(:use_route => 'new_person')
-    assert_equal '/people/new', @routes.generate(:controller => 'people', :action => 'new')
-    assert_equal '/people/1', @routes.generate(:use_route => 'person', :id => '1')
-    assert_equal '/people/1', @routes.generate(:controller => 'people', :action => 'show', :id => '1')
-    assert_equal '/people/1.xml', @routes.generate(:controller => 'people', :action => 'show', :id => '1', :format => 'xml')
-    assert_equal '/people/1', @routes.generate(:controller => 'people', :action => 'show', :id => 1)
-    assert_equal '/people/1', @routes.generate(:controller => 'people', :action => 'show', :id => Model.new('1'))
-    assert_equal '/people/1', @routes.generate({:action => 'show', :id => '1'}, {:controller => 'people', :action => 'index'})
-    assert_equal '/people/1', @routes.generate({:action => 'show', :id => 1}, {:controller => 'people', :action => 'show', :id => '1'})
-    # assert_equal '/people', @routes.generate({:controller => 'people', :action => 'index'}, {:controller => 'people', :action => 'index', :id => '1'})
-    assert_equal '/people', @routes.generate({:controller => 'people', :action => 'index'}, {:controller => 'people', :action => 'show', :id => '1'})
-    assert_equal '/people/1', @routes.generate({}, {:controller => 'people', :action => 'show', :id => '1'})
-    assert_equal '/people/1', @routes.generate({:controller => 'people', :action => 'show'}, {:controller => 'people', :action => 'index', :id => '1'})
-    assert_equal '/people/1/edit', @routes.generate(:controller => 'people', :action => 'edit', :id => '1')
-    assert_equal '/people/1/edit.xml', @routes.generate(:controller => 'people', :action => 'edit', :id => '1', :format => 'xml')
-    assert_equal '/people/1/edit', @routes.generate(:use_route => 'edit_person', :id => '1')
-    assert_equal '/people/1?legacy=true', @routes.generate(:controller => 'people', :action => 'show', :id => '1', :legacy => 'true')
-    assert_equal '/people?legacy=true', @routes.generate(:controller => 'people', :action => 'index', :legacy => 'true')
-
-    assert_equal '/id_default/2', @routes.generate(:controller => 'foo', :action => 'id_default', :id => '2')
-    assert_equal '/id_default', @routes.generate(:controller => 'foo', :action => 'id_default', :id => '1')
-    assert_equal '/id_default', @routes.generate(:controller => 'foo', :action => 'id_default', :id => 1)
-    assert_equal '/id_default', @routes.generate(:controller => 'foo', :action => 'id_default')
-    assert_equal '/optional/bar', @routes.generate(:controller => 'posts', :action => 'index', :optional => 'bar')
-    assert_equal '/posts', @routes.generate(:controller => 'posts', :action => 'index')
-
-    assert_equal '/project', @routes.generate({:controller => 'project', :action => 'index'})
-    assert_equal '/projects/1', @routes.generate({:controller => 'project', :action => 'index', :project_id => '1'})
-    assert_equal '/projects/1', @routes.generate({:controller => 'project', :action => 'index'}, {:project_id => '1'})
-    assert_raise(ActionController::RoutingError) { @routes.generate({:use_route => 'project', :controller => 'project', :action => 'index'}) }
-    assert_equal '/projects/1', @routes.generate({:use_route => 'project', :controller => 'project', :action => 'index', :project_id => '1'})
-    assert_equal '/projects/1', @routes.generate({:use_route => 'project', :controller => 'project', :action => 'index'}, {:project_id => '1'})
-
-    assert_equal '/clients', @routes.generate(:controller => 'projects', :action => 'index')
-    assert_equal '/clients?project_id=1', @routes.generate(:controller => 'projects', :action => 'index', :project_id => '1')
-    assert_equal '/clients', @routes.generate({:controller => 'projects', :action => 'index'}, {:project_id => '1'})
-    assert_equal '/clients', @routes.generate({:action => 'index'}, {:controller => 'projects', :action => 'index', :project_id => '1'})
-
-    assert_equal '/comment/20', @routes.generate({:id => 20}, {:controller => 'comments', :action => 'show'})
-    assert_equal '/comment/20', @routes.generate(:controller => 'comments', :id => 20, :action => 'show')
-    assert_equal '/comments/boo', @routes.generate(:controller => 'comments', :action => 'boo')
-
-    assert_equal '/ws/posts/show/1', @routes.generate(:controller => 'posts', :action => 'show', :id => '1', :ws => true)
-    assert_equal '/ws/posts', @routes.generate(:controller => 'posts', :action => 'index', :ws => true)
-
-    assert_equal '/account', @routes.generate(:controller => 'account', :action => 'subscription')
-    assert_equal '/account/billing', @routes.generate(:controller => 'account', :action => 'billing')
-
-    assert_equal '/pages/1/notes/show/1', @routes.generate(:page_id => '1', :controller => 'notes', :action => 'show', :id => '1')
-    assert_equal '/pages/1/notes/list', @routes.generate(:page_id => '1', :controller => 'notes', :action => 'list')
-    assert_equal '/pages/1/notes', @routes.generate(:page_id => '1', :controller => 'notes', :action => 'index')
-    assert_equal '/pages/1/notes', @routes.generate(:page_id => '1', :controller => 'notes')
-    assert_equal '/notes', @routes.generate(:page_id => nil, :controller => 'notes')
-    assert_equal '/notes', @routes.generate(:controller => 'notes')
-    assert_equal '/notes/print', @routes.generate(:controller => 'notes', :action => 'print')
-    assert_equal '/notes/print', @routes.generate({}, {:controller => 'notes', :action => 'print'})
-
-    assert_equal '/notes/index/1', @routes.generate({:controller => 'notes'}, {:controller => 'notes', :id => '1'})
-    assert_equal '/notes/index/1', @routes.generate({:controller => 'notes'}, {:controller => 'notes', :id => '1', :foo => 'bar'})
-    assert_equal '/notes/index/1', @routes.generate({:controller => 'notes'}, {:controller => 'notes', :id => '1'})
-    assert_equal '/notes/index/1', @routes.generate({:action => 'index'}, {:controller => 'notes', :id => '1'})
-    assert_equal '/notes/index/1', @routes.generate({}, {:controller => 'notes', :id => '1'})
-    assert_equal '/notes/show/1', @routes.generate({}, {:controller => 'notes', :action => 'show', :id => '1'})
-    assert_equal '/notes/index/1', @routes.generate({:controller => 'notes', :id => '1'}, {:foo => 'bar'})
-    assert_equal '/posts', @routes.generate({:controller => 'posts'}, {:controller => 'notes', :action => 'show', :id => '1'})
-    assert_equal '/notes/list', @routes.generate({:action => 'list'}, {:controller => 'notes', :action => 'show', :id => '1'})
-
-    assert_equal '/posts/ping', @routes.generate(:controller => 'posts', :action => 'ping')
-    assert_equal '/posts/show/1', @routes.generate(:controller => 'posts', :action => 'show', :id => '1')
-    assert_equal '/posts', @routes.generate(:controller => 'posts')
-    assert_equal '/posts', @routes.generate(:controller => 'posts', :action => 'index')
-    assert_equal '/posts', @routes.generate({:controller => 'posts'}, {:controller => 'posts', :action => 'index'})
-    assert_equal '/posts/create', @routes.generate({:action => 'create'}, {:controller => 'posts'})
-    assert_equal '/posts?foo=bar', @routes.generate(:controller => 'posts', :foo => 'bar')
-    assert_equal '/posts?foo[]=bar&foo[]=baz', @routes.generate(:controller => 'posts', :foo => ['bar', 'baz'])
-    assert_equal '/posts?page=2', @routes.generate(:controller => 'posts', :page => 2)
-    assert_equal '/posts?q[foo][a]=b', @routes.generate(:controller => 'posts', :q => { :foo => { :a => 'b'}})
-
-    assert_equal '/', @routes.generate(:controller => 'news', :action => 'index')
-    assert_equal '/', @routes.generate(:controller => 'news', :action => 'index', :format => nil)
-    assert_equal '/news.rss', @routes.generate(:controller => 'news', :action => 'index', :format => 'rss')
-
-
-    assert_raise(ActionController::RoutingError) { @routes.generate({:action => 'index'}) }
+    assert_equal '/admin/users', url_for(@routes, { :use_route => 'admin_users' })
+    assert_equal '/admin/users', url_for(@routes, { :controller => 'admin/users' })
+    assert_equal '/admin/users', url_for(@routes, { :controller => 'admin/users', :action => 'index' })
+    assert_equal '/admin/users', url_for(@routes, { :action => 'index' }, { :controller => 'admin/users' })
+    assert_equal '/admin/users', url_for(@routes, { :controller => 'users', :action => 'index' }, { :controller => 'admin/accounts' })
+    assert_equal '/people',      url_for(@routes, { :controller => '/people', :action => 'index' }, { :controller => 'admin/accounts' })
+
+    assert_equal '/admin/posts',     url_for(@routes, { :controller => 'admin/posts' })
+    assert_equal '/admin/posts/new', url_for(@routes, { :controller => 'admin/posts', :action => 'new' })
+
+    assert_equal '/blog/2009',     url_for(@routes, { :controller => 'posts', :action => 'show_date', :year => 2009 })
+    assert_equal '/blog/2009/1',   url_for(@routes, { :controller => 'posts', :action => 'show_date', :year => 2009, :month => 1 })
+    assert_equal '/blog/2009/1/1', url_for(@routes, { :controller => 'posts', :action => 'show_date', :year => 2009, :month => 1, :day => 1 })
+
+    assert_equal '/archive/2010', url_for(@routes, { :controller => 'archive', :action => 'index', :year => '2010' })
+    assert_equal '/archive',      url_for(@routes, { :controller => 'archive', :action => 'index' })
+    assert_equal '/archive?year=january', url_for(@routes, { :controller => 'archive', :action => 'index', :year => 'january' })
+
+    assert_equal '/people', url_for(@routes, { :controller => 'people', :action => 'index' })
+    assert_equal '/people', url_for(@routes, { :action => 'index' }, { :controller => 'people' })
+    assert_equal '/people', url_for(@routes, { :action => 'index' }, { :controller => 'people', :action => 'show', :id => '1' })
+    assert_equal '/people', url_for(@routes, { :controller => 'people', :action => 'index' }, { :controller => 'people', :action => 'show', :id => '1' })
+    assert_equal '/people', url_for(@routes, {}, { :controller => 'people', :action => 'index' })
+    assert_equal '/people/1',   url_for(@routes, { :controller => 'people', :action => 'show' }, { :controller => 'people', :action => 'show', :id => '1' })
+    assert_equal '/people/new', url_for(@routes, { :use_route => 'new_person' })
+    assert_equal '/people/new', url_for(@routes, { :controller => 'people', :action => 'new' })
+    assert_equal '/people/1',   url_for(@routes, { :use_route => 'person', :id => '1' })
+    assert_equal '/people/1',   url_for(@routes, { :controller => 'people', :action => 'show', :id => '1' })
+    assert_equal '/people/1.xml', url_for(@routes, { :controller => 'people', :action => 'show', :id => '1', :format => 'xml' })
+    assert_equal '/people/1', url_for(@routes, { :controller => 'people', :action => 'show', :id => 1 })
+    assert_equal '/people/1', url_for(@routes, { :controller => 'people', :action => 'show', :id => Model.new('1') })
+    assert_equal '/people/1', url_for(@routes, { :action => 'show', :id => '1' }, { :controller => 'people', :action => 'index' })
+    assert_equal '/people/1', url_for(@routes, { :action => 'show', :id => 1 }, { :controller => 'people', :action => 'show', :id => '1' })
+    assert_equal '/people',   url_for(@routes, { :controller => 'people', :action => 'index' }, { :controller => 'people', :action => 'show', :id => '1' })
+    assert_equal '/people/1', url_for(@routes, {}, { :controller => 'people', :action => 'show', :id => '1' })
+    assert_equal '/people/1', url_for(@routes, { :controller => 'people', :action => 'show' }, { :controller => 'people', :action => 'index', :id => '1' })
+    assert_equal '/people/1/edit',     url_for(@routes, { :controller => 'people', :action => 'edit', :id => '1' })
+    assert_equal '/people/1/edit.xml', url_for(@routes, { :controller => 'people', :action => 'edit', :id => '1', :format => 'xml' })
+    assert_equal '/people/1/edit',     url_for(@routes, { :use_route => 'edit_person', :id => '1' })
+    assert_equal '/people/1?legacy=true', url_for(@routes, { :controller => 'people', :action => 'show', :id => '1', :legacy => 'true' })
+    assert_equal '/people?legacy=true',   url_for(@routes, { :controller => 'people', :action => 'index', :legacy => 'true' })
+
+    assert_equal '/id_default/2', url_for(@routes, { :controller => 'foo', :action => 'id_default', :id => '2' })
+    assert_equal '/id_default',   url_for(@routes, { :controller => 'foo', :action => 'id_default', :id => '1' })
+    assert_equal '/id_default',   url_for(@routes, { :controller => 'foo', :action => 'id_default', :id => 1 })
+    assert_equal '/id_default',   url_for(@routes, { :controller => 'foo', :action => 'id_default' })
+    assert_equal '/optional/bar', url_for(@routes, { :controller => 'posts', :action => 'index', :optional => 'bar' })
+    assert_equal '/posts', url_for(@routes, { :controller => 'posts', :action => 'index' })
+
+    assert_equal '/project',    url_for(@routes, { :controller => 'project', :action => 'index' })
+    assert_equal '/projects/1', url_for(@routes, { :controller => 'project', :action => 'index', :project_id => '1' })
+    assert_equal '/projects/1', url_for(@routes, { :controller => 'project', :action => 'index'}, {:project_id => '1' })
+    assert_raise(ActionController::RoutingError) { url_for(@routes, { :use_route => 'project', :controller => 'project', :action => 'index' }) }
+    assert_equal '/projects/1', url_for(@routes, { :use_route => 'project', :controller => 'project', :action => 'index', :project_id => '1' })
+    assert_equal '/projects/1', url_for(@routes, { :use_route => 'project', :controller => 'project', :action => 'index' }, { :project_id => '1' })
+
+    assert_equal '/clients', url_for(@routes, { :controller => 'projects', :action => 'index' })
+    assert_equal '/clients?project_id=1', url_for(@routes, { :controller => 'projects', :action => 'index', :project_id => '1' })
+    assert_equal '/clients', url_for(@routes, { :controller => 'projects', :action => 'index' }, { :project_id => '1' })
+    assert_equal '/clients', url_for(@routes, { :action => 'index' }, { :controller => 'projects', :action => 'index', :project_id => '1' })
+
+    assert_equal '/comment/20',   url_for(@routes, { :id => 20 }, { :controller => 'comments', :action => 'show' })
+    assert_equal '/comment/20',   url_for(@routes, { :controller => 'comments', :id => 20, :action => 'show' })
+    assert_equal '/comments/boo', url_for(@routes, { :controller => 'comments', :action => 'boo' })
+
+    assert_equal '/ws/posts/show/1', url_for(@routes, { :controller => 'posts', :action => 'show', :id => '1', :ws => true })
+    assert_equal '/ws/posts',        url_for(@routes, { :controller => 'posts', :action => 'index', :ws => true })
+
+    assert_equal '/account',         url_for(@routes, { :controller => 'account', :action => 'subscription' })
+    assert_equal '/account/billing', url_for(@routes, { :controller => 'account', :action => 'billing' })
+
+    assert_equal '/pages/1/notes/show/1', url_for(@routes, { :page_id => '1', :controller => 'notes', :action => 'show', :id => '1' })
+    assert_equal '/pages/1/notes/list',   url_for(@routes, { :page_id => '1', :controller => 'notes', :action => 'list' })
+    assert_equal '/pages/1/notes', url_for(@routes, { :page_id => '1', :controller => 'notes', :action => 'index' })
+    assert_equal '/pages/1/notes', url_for(@routes, { :page_id => '1', :controller => 'notes' })
+    assert_equal '/notes',         url_for(@routes, { :page_id => nil, :controller => 'notes' })
+    assert_equal '/notes',         url_for(@routes, { :controller => 'notes' })
+    assert_equal '/notes/print',   url_for(@routes, { :controller => 'notes', :action => 'print' })
+    assert_equal '/notes/print',   url_for(@routes, {}, { :controller => 'notes', :action => 'print' })
+
+    assert_equal '/notes/index/1', url_for(@routes, { :controller => 'notes' }, { :controller => 'notes', :id => '1' })
+    assert_equal '/notes/index/1', url_for(@routes, { :controller => 'notes' }, { :controller => 'notes', :id => '1', :foo => 'bar' })
+    assert_equal '/notes/index/1', url_for(@routes, { :controller => 'notes' }, { :controller => 'notes', :id => '1' })
+    assert_equal '/notes/index/1', url_for(@routes, { :action => 'index' }, { :controller => 'notes', :id => '1' })
+    assert_equal '/notes/index/1', url_for(@routes, {}, { :controller => 'notes', :id => '1' })
+    assert_equal '/notes/show/1',  url_for(@routes, {}, { :controller => 'notes', :action => 'show', :id => '1' })
+    assert_equal '/notes/index/1', url_for(@routes, { :controller => 'notes', :id => '1' }, { :foo => 'bar' })
+    assert_equal '/posts',      url_for(@routes, { :controller => 'posts' }, { :controller => 'notes', :action => 'show', :id => '1' })
+    assert_equal '/notes/list', url_for(@routes, { :action => 'list' }, { :controller => 'notes', :action => 'show', :id => '1' })
+
+    assert_equal '/posts/ping',    url_for(@routes, { :controller => 'posts', :action => 'ping' })
+    assert_equal '/posts/show/1',  url_for(@routes, { :controller => 'posts', :action => 'show', :id => '1' })
+    assert_equal '/posts',         url_for(@routes, { :controller => 'posts' })
+    assert_equal '/posts',         url_for(@routes, { :controller => 'posts', :action => 'index' })
+    assert_equal '/posts',         url_for(@routes, { :controller => 'posts' }, { :controller => 'posts', :action => 'index' })
+    assert_equal '/posts/create',  url_for(@routes, { :action => 'create' }, { :controller => 'posts' })
+    assert_equal '/posts?foo=bar', url_for(@routes, { :controller => 'posts', :foo => 'bar' })
+    assert_equal '/posts?foo%5B%5D=bar&foo%5B%5D=baz', url_for(@routes, { :controller => 'posts', :foo => ['bar', 'baz'] })
+    assert_equal '/posts?page=2',  url_for(@routes, { :controller => 'posts', :page => 2 })
+    assert_equal '/posts?q%5Bfoo%5D%5Ba%5D=b', url_for(@routes, { :controller => 'posts', :q => { :foo => { :a => 'b'}} })
+
+    assert_equal '/news.rss', url_for(@routes, { :controller => 'news', :action => 'index', :format => 'rss' })
+
+
+    assert_raise(ActionController::RoutingError) { url_for(@routes, { :action => 'index' }) }
   end
 
   def test_generate_extras
diff --git a/actionpack/test/controller/runner_test.rb b/actionpack/test/controller/runner_test.rb
new file mode 100644
index 0000000000..24c220dcd5
--- /dev/null
+++ b/actionpack/test/controller/runner_test.rb
@@ -0,0 +1,22 @@
+require 'abstract_unit'
+require 'action_dispatch/testing/integration'
+
+module ActionDispatch
+  class RunnerTest < Test::Unit::TestCase
+    class MyRunner
+      include Integration::Runner
+
+      def initialize(session)
+        @integration_session = session
+      end
+
+      def hi; end
+    end
+
+    def test_respond_to?
+      runner = MyRunner.new(Class.new { def x; end }.new)
+      assert runner.respond_to?(:hi)
+      assert runner.respond_to?(:x)
+    end
+  end
+end
diff --git a/actionpack/test/controller/selector_test.rb b/actionpack/test/controller/selector_test.rb
index 5a5dc840b5..8ce9e43402 100644
--- a/actionpack/test/controller/selector_test.rb
+++ b/actionpack/test/controller/selector_test.rb
@@ -437,7 +437,7 @@ class SelectorTest < Test::Unit::TestCase
     assert_equal "4", @matches[1].attributes["id"]
   end
 
-  
+
   def test_first_and_last
     parse(%Q{<table><thead></thead><tr id="1"></tr><tr id="2"></tr><tr id="3"></tr><tr id="4"></tr></table>})
     # First child.
@@ -471,7 +471,7 @@ class SelectorTest < Test::Unit::TestCase
   end
 
 
-  def test_first_and_last
+  def test_only_child_and_only_type_first_and_last
     # Only child.
     parse(%Q{<table><tr></tr></table>})
     select("table:only-child")
@@ -503,7 +503,7 @@ class SelectorTest < Test::Unit::TestCase
     assert_equal 1, @matches.size
   end
 
-  
+
   def test_content
     parse(%Q{<div> </div>})
     select("div:content()")
@@ -582,7 +582,7 @@ class SelectorTest < Test::Unit::TestCase
     assert_equal "foo", @matches[0].attributes["title"]
   end
 
-  
+
   def test_pseudo_class_negation
     parse(%Q{<div><p id="1"></p><p id="2"></p></div>})
     select("p")
@@ -594,7 +594,7 @@ class SelectorTest < Test::Unit::TestCase
     assert_equal 1, @matches.size
     assert_equal "1", @matches[0].attributes["id"]
   end
-  
+
 
   def test_negation_details
     parse(%Q{<p id="1"></p><p id="2"></p><p id="3"></p>})
diff --git a/actionpack/test/controller/test_test.rb b/actionpack/test/controller/test_test.rb
index 13c9d9ee38..edda0d0a30 100644
--- a/actionpack/test/controller/test_test.rb
+++ b/actionpack/test/controller/test_test.rb
@@ -135,6 +135,11 @@ XML
     @request    = ActionController::TestRequest.new
     @response   = ActionController::TestResponse.new
     @request.env['PATH_INFO'] = nil
+    @routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
+      r.draw do
+        match ':controller(/:action(/:id))'
+      end
+    end
   end
 
   def test_raw_post_handling
@@ -454,18 +459,26 @@ XML
 
   def test_assert_routing_with_method
     with_routing do |set|
-      set.draw { |map| map.resources(:content) }
+      set.draw { resources(:content) }
       assert_routing({ :method => 'post', :path => 'content' }, { :controller => 'content', :action => 'create' })
     end
   end
 
   def test_assert_routing_in_module
-    assert_routing 'admin/user', :controller => 'admin/user', :action => 'index'
+    with_routing do |set|
+      set.draw do
+        namespace :admin do
+          match 'user' => 'user#index'
+        end
+      end
+
+      assert_routing 'admin/user', :controller => 'admin/user', :action => 'index'
+    end
   end
-  
+
   def test_assert_routing_with_glob
     with_routing do |set|
-      set.draw { |map| match('*path' => "pages#show") }
+      set.draw { match('*path' => "pages#show") }
       assert_routing('/company/about', { :controller => 'pages', :action => 'show', :path => 'company/about' })
     end
   end
@@ -487,7 +500,7 @@ XML
 
   def test_array_path_parameter_handled_properly
     with_routing do |set|
-      set.draw do |map|
+      set.draw do
         match 'file/*path', :to => 'test_test/test#test_params'
         match ':controller/:action'
       end
@@ -546,7 +559,15 @@ XML
     assert_equal "bar", @request.params[:foo]
     @request.recycle!
     post :no_op
-    assert @request.params[:foo].blank?
+    assert_blank @request.params[:foo]
+  end
+
+  def test_symbolized_path_params_reset_after_request
+    get :test_params, :id => "foo"
+    assert_equal "foo", @request.symbolized_path_parameters[:id]
+    @request.recycle!
+    get :test_params
+    assert_nil @request.symbolized_path_parameters[:id]
   end
 
   def test_should_have_knowledge_of_client_side_cookie_state_even_if_they_are_not_set
@@ -570,7 +591,7 @@ XML
           assert false, "expected RuntimeError, got nothing"
         rescue RuntimeError => error
           assert true
-          assert_match %r{@#{variable} is nil}, error.message
+          assert_match(%r{@#{variable} is nil}, error.message)
         rescue => error
           assert false, "expected RuntimeError, got #{error.class}"
         end
@@ -653,13 +674,6 @@ XML
       assert_redirected_to 'created resource'
     end
   end
-
-  def test_binary_content_works_with_send_file
-    get :test_send_file
-    assert_deprecated do
-      assert_nothing_raised(NoMethodError) { @response.binary_content }
-    end
-  end
 end
 
 class InferringClassNameTest < ActionController::TestCase
@@ -694,7 +708,7 @@ class NamedRoutesControllerTest < ActionController::TestCase
 
   def test_should_be_able_to_use_named_routes_before_a_request_is_done
     with_routing do |set|
-      set.draw { |map| resources :contents }
+      set.draw { resources :contents }
       assert_equal 'http://test.host/contents/new', new_content_url
       assert_equal 'http://test.host/contents/1', content_url(:id => 1)
     end
diff --git a/actionpack/test/controller/url_for_test.rb b/actionpack/test/controller/url_for_test.rb
index 71a4a43477..3f3d6dcc2f 100644
--- a/actionpack/test/controller/url_for_test.rb
+++ b/actionpack/test/controller/url_for_test.rb
@@ -5,7 +5,7 @@ module AbstractController
 
     class UrlForTests < ActionController::TestCase
       class W
-        include SharedTestRoutes.url_helpers
+        include ActionDispatch::Routing::RouteSet.new.tap { |r| r.draw { match ':controller(/:action(/:id(.:format)))' } }.url_helpers
       end
 
       def teardown
@@ -17,7 +17,7 @@ module AbstractController
       end
 
       def test_exception_is_thrown_without_host
-        assert_raise RuntimeError do
+        assert_raise ArgumentError do
           W.new.url_for :controller => 'c', :action => 'a', :id => 'i'
         end
       end
@@ -60,6 +60,27 @@ module AbstractController
         )
       end
 
+      def test_subdomain_may_be_changed
+        add_host!
+        assert_equal('http://api.basecamphq.com/c/a/i',
+          W.new.url_for(:subdomain => 'api', :controller => 'c', :action => 'a', :id => 'i')
+        )
+      end
+
+      def test_domain_may_be_changed
+        add_host!
+        assert_equal('http://www.37signals.com/c/a/i',
+          W.new.url_for(:domain => '37signals.com', :controller => 'c', :action => 'a', :id => 'i')
+        )
+      end
+
+      def test_tld_length_may_be_changed
+        add_host!
+        assert_equal('http://mobile.www.basecamphq.com/c/a/i',
+          W.new.url_for(:subdomain => 'mobile', :tld_length => 2, :controller => 'c', :action => 'a', :id => 'i')
+        )
+      end
+
       def test_port
         add_host!
         assert_equal('http://www.basecamphq.com:3000/c/a/i',
@@ -74,16 +95,29 @@ module AbstractController
         )
       end
 
-      def test_protocol_with_and_without_separator
+      def test_protocol_with_and_without_separators
         add_host!
         assert_equal('https://www.basecamphq.com/c/a/i',
           W.new.url_for(:controller => 'c', :action => 'a', :id => 'i', :protocol => 'https')
         )
         assert_equal('https://www.basecamphq.com/c/a/i',
+          W.new.url_for(:controller => 'c', :action => 'a', :id => 'i', :protocol => 'https:')
+        )
+        assert_equal('https://www.basecamphq.com/c/a/i',
           W.new.url_for(:controller => 'c', :action => 'a', :id => 'i', :protocol => 'https://')
         )
       end
 
+      def test_without_protocol
+        add_host!
+        assert_equal('//www.basecamphq.com/c/a/i',
+          W.new.url_for(:controller => 'c', :action => 'a', :id => 'i', :protocol => '//')
+        )
+        assert_equal('//www.basecamphq.com/c/a/i',
+          W.new.url_for(:controller => 'c', :action => 'a', :id => 'i', :protocol => false)
+        )
+      end
+
       def test_trailing_slash
         add_host!
         options = {:controller => 'foo', :trailing_slash => true, :action => 'bar', :id => '33'}
@@ -130,7 +164,7 @@ module AbstractController
 
       def test_named_routes
         with_routing do |set|
-          set.draw do |map|
+          set.draw do
             match 'this/is/verbose', :to => 'home#index', :as => :no_args
             match 'home/sweet/home/:user', :to => 'home#index', :as => :home
           end
@@ -151,7 +185,7 @@ module AbstractController
 
       def test_relative_url_root_is_respected_for_named_routes
         with_routing do |set|
-          set.draw do |map|
+          set.draw do
             match '/home/sweet/home/:user', :to => 'home#index', :as => :home
           end
 
@@ -165,7 +199,7 @@ module AbstractController
 
       def test_only_path
         with_routing do |set|
-          set.draw do |map|
+          set.draw do
             match 'home/sweet/home/:user', :to => 'home#index', :as => :home
             match ':controller/:action/:id'
           end
@@ -219,7 +253,7 @@ module AbstractController
 
       def test_hash_recursive_and_array_parameters
         url = W.new.url_for(:only_path => true, :controller => 'c', :action => 'a', :id => 101, :query => {:person => {:name => 'Bob', :position => ['prof', 'art director']}, :hobby => 'piercing'})
-        assert_match %r(^/c/a/101), url
+        assert_match(%r(^/c/a/101), url)
         params = extract_params(url)
         assert_equal params[0], { 'query[hobby]'              => 'piercing'     }.to_query
         assert_equal params[1], { 'query[person][name]'       => 'Bob'          }.to_query
@@ -233,7 +267,7 @@ module AbstractController
 
       def test_named_routes_with_nil_keys
         with_routing do |set|
-          set.draw do |map|
+          set.draw do
             match 'posts.:format', :to => 'posts#index', :as => :posts
             match '/', :to => 'posts#index', :as => :main
           end
@@ -277,6 +311,14 @@ module AbstractController
         assert_equal("/c/a", W.new.url_for(HashWithIndifferentAccess.new('controller' => 'c', 'action' => 'a', 'only_path' => true)))
       end
 
+      def test_url_params_with_nil_to_param_are_not_in_url
+        assert_equal("/c/a", W.new.url_for(:only_path => true, :controller => 'c', :action => 'a', :id => Struct.new(:to_param).new(nil)))
+      end
+
+      def test_false_url_params_are_included_in_query
+        assert_equal("/c/a?show=false", W.new.url_for(:only_path => true, :controller => 'c', :action => 'a', :show => false))
+      end
+
       private
         def extract_params(url)
           url.split('?', 2).last.split('&').sort
diff --git a/actionpack/test/controller/url_rewriter_test.rb b/actionpack/test/controller/url_rewriter_test.rb
index a8d7b75372..89de4c1da4 100644
--- a/actionpack/test/controller/url_rewriter_test.rb
+++ b/actionpack/test/controller/url_rewriter_test.rb
@@ -19,6 +19,11 @@ class UrlRewriterTests < ActionController::TestCase
     @request = ActionController::TestRequest.new
     @params = {}
     @rewriter = Rewriter.new(@request) #.new(@request, @params)
+    @routes = ActionDispatch::Routing::RouteSet.new.tap do |r|
+      r.draw do
+        match ':controller(/:action(/:id))'
+      end
+    end
   end
 
   def test_port
diff --git a/actionpack/test/controller/view_paths_test.rb b/actionpack/test/controller/view_paths_test.rb
index b8972b04b6..edfcb5cc4d 100644
--- a/actionpack/test/controller/view_paths_test.rb
+++ b/actionpack/test/controller/view_paths_test.rb
@@ -20,7 +20,7 @@ class ViewLoadPathsTest < ActionController::TestCase
     layout 'test/sub'
     def hello_world; render(:template => 'test/hello_world'); end
   end
-  
+
   def setup
     # TestController.view_paths = nil
 
@@ -64,7 +64,7 @@ class ViewLoadPathsTest < ActionController::TestCase
 
     @controller.append_view_path(%w(bar baz))
     assert_paths(FIXTURE_LOAD_PATH, "foo", "bar", "baz")
-    
+
     @controller.append_view_path(FIXTURE_LOAD_PATH)
     assert_paths(FIXTURE_LOAD_PATH, "foo", "bar", "baz", FIXTURE_LOAD_PATH)
   end
diff --git a/actionpack/test/controller/webservice_test.rb b/actionpack/test/controller/webservice_test.rb
index 5942950b15..621fb79915 100644
--- a/actionpack/test/controller/webservice_test.rb
+++ b/actionpack/test/controller/webservice_test.rb
@@ -1,6 +1,6 @@
 require 'abstract_unit'
 
-class WebServiceTest < ActionController::IntegrationTest
+class WebServiceTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     def assign_parameters
       if params[:full]
@@ -24,12 +24,13 @@ class WebServiceTest < ActionController::IntegrationTest
 
   def setup
     @controller = TestController.new
+    @integration_session = nil
   end
 
   def test_check_parameters
     with_test_route_set do
       get "/"
-      assert @controller.response.body.blank?
+      assert_blank @controller.response.body
     end
   end
 
@@ -161,7 +162,7 @@ class WebServiceTest < ActionController::IntegrationTest
   def test_use_xml_ximple_with_empty_request
     with_test_route_set do
       assert_nothing_raised { post "/", "", {'CONTENT_TYPE' => 'application/xml'} }
-      assert @controller.response.body.blank?
+      assert_blank @controller.response.body
     end
   end
 
@@ -215,7 +216,7 @@ class WebServiceTest < ActionController::IntegrationTest
   def test_typecast_as_yaml
     with_test_route_set do
       with_params_parsers Mime::YAML => :yaml do
-        yaml = <<-YAML
+        yaml = (<<-YAML).strip
           ---
           data:
             a: 15
@@ -254,7 +255,7 @@ class WebServiceTest < ActionController::IntegrationTest
 
     def with_test_route_set
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match '/', :to => 'web_service_test/test#assign_parameters'
         end
         yield
diff --git a/actionpack/test/dispatch/callbacks_test.rb b/actionpack/test/dispatch/callbacks_test.rb
index 9df882ce75..eed2eca2ab 100644
--- a/actionpack/test/dispatch/callbacks_test.rb
+++ b/actionpack/test/dispatch/callbacks_test.rb
@@ -1,6 +1,6 @@
 require 'abstract_unit'
 
-class DispatcherTest < Test::Unit::TestCase
+class DispatcherTest < ActiveSupport::TestCase
   class Foo
     cattr_accessor :a, :b
   end
@@ -9,69 +9,13 @@ class DispatcherTest < Test::Unit::TestCase
     def call(env)
       [200, {}, 'response']
     end
-  end 
+  end
 
   def setup
     Foo.a, Foo.b = 0, 0
-    ActionDispatch::Callbacks.reset_callbacks(:prepare)
     ActionDispatch::Callbacks.reset_callbacks(:call)
   end
 
-  def test_prepare_callbacks_with_cache_classes
-    a = b = c = nil
-    ActionDispatch::Callbacks.to_prepare { |*args| a = b = c = 1 }
-    ActionDispatch::Callbacks.to_prepare { |*args| b = c = 2 }
-    ActionDispatch::Callbacks.to_prepare { |*args| c = 3 }
-
-    # Ensure to_prepare callbacks are not run when defined
-    assert_nil a || b || c
-
-    # Run callbacks
-    dispatch
-
-    assert_equal 1, a
-    assert_equal 2, b
-    assert_equal 3, c
-
-    # Make sure they are only run once
-    a = b = c = nil
-    dispatch
-    assert_nil a || b || c
-  end
-
-  def test_prepare_callbacks_without_cache_classes
-    a = b = c = nil
-    ActionDispatch::Callbacks.to_prepare { |*args| a = b = c = 1 }
-    ActionDispatch::Callbacks.to_prepare { |*args| b = c = 2 }
-    ActionDispatch::Callbacks.to_prepare { |*args| c = 3 }
-
-    # Ensure to_prepare callbacks are not run when defined
-    assert_nil a || b || c
-
-    # Run callbacks
-    dispatch(false)
-
-    assert_equal 1, a
-    assert_equal 2, b
-    assert_equal 3, c
-
-    # Make sure they are run again
-    a = b = c = nil
-    dispatch(false)
-    assert_equal 1, a
-    assert_equal 2, b
-    assert_equal 3, c
-  end
-
-  def test_to_prepare_with_identifier_replaces
-    ActionDispatch::Callbacks.to_prepare(:unique_id) { |*args| Foo.a, Foo.b = 1, 1 }
-    ActionDispatch::Callbacks.to_prepare(:unique_id) { |*args| Foo.a = 2 }
-
-    dispatch
-    assert_equal 2, Foo.a
-    assert_equal 0, Foo.b
-  end
-
   def test_before_and_after_callbacks
     ActionDispatch::Callbacks.before { |*args| Foo.a += 1; Foo.b += 1 }
     ActionDispatch::Callbacks.after  { |*args| Foo.a += 1; Foo.b += 1 }
@@ -85,10 +29,22 @@ class DispatcherTest < Test::Unit::TestCase
     assert_equal 4, Foo.b
   end
 
+  def test_to_prepare_and_cleanup_delegation
+    prepared = cleaned = false
+    ActionDispatch::Callbacks.to_prepare { prepared = true }
+    ActionDispatch::Callbacks.to_prepare { cleaned = true }
+
+    ActionDispatch::Reloader.prepare!
+    assert prepared
+
+    ActionDispatch::Reloader.cleanup!
+    assert cleaned
+  end
+
   private
 
-    def dispatch(cache_classes = true, &block)
-      @dispatcher ||= ActionDispatch::Callbacks.new(block || DummyApp.new, !cache_classes)
+    def dispatch(&block)
+      @dispatcher ||= ActionDispatch::Callbacks.new(block || DummyApp.new)
       @dispatcher.call({'rack.input' => StringIO.new('')})
     end
 
diff --git a/actionpack/test/dispatch/cookies_test.rb b/actionpack/test/dispatch/cookies_test.rb
index b04c1a42c0..39159fd629 100644
--- a/actionpack/test/dispatch/cookies_test.rb
+++ b/actionpack/test/dispatch/cookies_test.rb
@@ -48,6 +48,11 @@ class CookiesTest < ActionController::TestCase
       head :ok
     end
 
+    def authenticate_with_secure
+      cookies["user_name"] = { :value => "david", :secure => true }
+      head :ok
+    end
+
     def set_permanent_cookie
       cookies.permanent[:user_name] = "Jamie"
       head :ok
@@ -89,6 +94,50 @@ class CookiesTest < ActionController::TestCase
       cookies.delete(:user_name, :domain => :all)
       head :ok
     end
+
+    def set_cookie_with_domain_and_tld
+      cookies[:user_name] = {:value => "rizwanreza", :domain => :all, :tld_length => 2}
+      head :ok
+    end
+
+    def delete_cookie_with_domain_and_tld
+      cookies.delete(:user_name, :domain => :all, :tld_length => 2)
+      head :ok
+    end
+
+    def set_cookie_with_domains
+      cookies[:user_name] = {:value => "rizwanreza", :domain => %w(example1.com example2.com .example3.com)}
+      head :ok
+    end
+
+    def delete_cookie_with_domains
+      cookies.delete(:user_name, :domain => %w(example1.com example2.com .example3.com))
+      head :ok
+    end
+
+    def symbol_key
+      cookies[:user_name] = "david"
+      head :ok
+    end
+
+    def string_key
+      cookies['user_name'] = "david"
+      head :ok
+    end
+
+    def symbol_key_mock
+      cookies[:user_name] = "david" if cookies[:user_name] == "andrew"
+      head :ok
+    end
+
+    def string_key_mock
+      cookies['user_name'] = "david" if cookies['user_name'] == "andrew"
+      head :ok
+    end
+
+    def noop
+      head :ok
+    end
   end
 
   tests TestController
@@ -129,6 +178,26 @@ class CookiesTest < ActionController::TestCase
     assert_equal({"user_name" => "david"}, @response.cookies)
   end
 
+  def test_setting_cookie_with_secure
+    @request.env["HTTPS"] = "on"
+    get :authenticate_with_secure
+    assert_cookie_header "user_name=david; path=/; secure"
+    assert_equal({"user_name" => "david"}, @response.cookies)
+  end
+
+  def test_setting_cookie_with_secure_in_development
+    Rails.env.stubs(:development?).returns(true)
+    get :authenticate_with_secure
+    assert_cookie_header "user_name=david; path=/; secure"
+    assert_equal({"user_name" => "david"}, @response.cookies)
+  end
+
+  def test_not_setting_cookie_with_secure
+    get :authenticate_with_secure
+    assert_not_cookie_header "user_name=david; path=/; secure"
+    assert_not_equal({"user_name" => "david"}, @response.cookies)
+  end
+
   def test_multiple_cookies
     get :set_multiple_cookies
     assert_equal 2, @response.cookies.size
@@ -158,8 +227,8 @@ class CookiesTest < ActionController::TestCase
 
   def test_permanent_cookie
     get :set_permanent_cookie
-    assert_match /Jamie/, @response.headers["Set-Cookie"]
-    assert_match %r(#{20.years.from_now.utc.year}), @response.headers["Set-Cookie"]
+    assert_match(/Jamie/, @response.headers["Set-Cookie"])
+    assert_match(%r(#{20.years.from_now.utc.year}), @response.headers["Set-Cookie"])
   end
 
   def test_signed_cookie
@@ -174,7 +243,7 @@ class CookiesTest < ActionController::TestCase
 
   def test_permanent_signed_cookie
     get :set_permanent_signed_cookie
-    assert_match %r(#{20.years.from_now.utc.year}), @response.headers["Set-Cookie"]
+    assert_match(%r(#{20.years.from_now.utc.year}), @response.headers["Set-Cookie"])
     assert_equal 100, @controller.send(:cookies).signed[:remember_me]
   end
 
@@ -232,12 +301,181 @@ class CookiesTest < ActionController::TestCase
     assert_cookie_header "user_name=rizwanreza; domain=.nextangle.com; path=/"
   end
 
+  def test_cookie_with_all_domain_option_using_a_non_standard_tld
+    @request.host = "two.subdomains.nextangle.local"
+    get :set_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.nextangle.local; path=/"
+  end
+
+  def test_cookie_with_all_domain_option_using_australian_style_tld
+    @request.host = "nextangle.com.au"
+    get :set_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.nextangle.com.au; path=/"
+  end
+
+  def test_cookie_with_all_domain_option_using_uk_style_tld
+    @request.host = "nextangle.co.uk"
+    get :set_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.nextangle.co.uk; path=/"
+  end
+
+  def test_cookie_with_all_domain_option_using_host_with_port
+    @request.host = "nextangle.local:3000"
+    get :set_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.nextangle.local; path=/"
+  end
+
+  def test_cookie_with_all_domain_option_using_localhost
+    @request.host = "localhost"
+    get :set_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; path=/"
+  end
+
+  def test_cookie_with_all_domain_option_using_ipv4_address
+    @request.host = "192.168.1.1"
+    get :set_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; path=/"
+  end
+
+  def test_cookie_with_all_domain_option_using_ipv6_address
+    @request.host = "2001:0db8:85a3:0000:0000:8a2e:0370:7334"
+    get :set_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; path=/"
+  end
+
   def test_deleting_cookie_with_all_domain_option
     get :delete_cookie_with_domain
     assert_response :success
     assert_cookie_header "user_name=; domain=.nextangle.com; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT"
   end
 
+  def test_cookie_with_all_domain_option_and_tld_length
+    get :set_cookie_with_domain_and_tld
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.nextangle.com; path=/"
+  end
+
+  def test_cookie_with_all_domain_option_using_a_non_standard_tld_and_tld_length
+    @request.host = "two.subdomains.nextangle.local"
+    get :set_cookie_with_domain_and_tld
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.nextangle.local; path=/"
+  end
+
+  def test_cookie_with_all_domain_option_using_host_with_port_and_tld_length
+    @request.host = "nextangle.local:3000"
+    get :set_cookie_with_domain_and_tld
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.nextangle.local; path=/"
+  end
+
+  def test_deleting_cookie_with_all_domain_option_and_tld_length
+    get :delete_cookie_with_domain_and_tld
+    assert_response :success
+    assert_cookie_header "user_name=; domain=.nextangle.com; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT"
+  end
+
+  def test_cookie_with_several_preset_domains_using_one_of_these_domains
+    @request.host = "example1.com"
+    get :set_cookie_with_domains
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=example1.com; path=/"
+  end
+
+  def test_cookie_with_several_preset_domains_using_other_domain
+    @request.host = "other-domain.com"
+    get :set_cookie_with_domains
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; path=/"
+  end
+
+  def test_cookie_with_several_preset_domains_using_shared_domain
+    @request.host = "example3.com"
+    get :set_cookie_with_domains
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.example3.com; path=/"
+  end
+
+  def test_deletings_cookie_with_several_preset_domains_using_one_of_these_domains
+    @request.host = "example2.com"
+    get :delete_cookie_with_domains
+    assert_response :success
+    assert_cookie_header "user_name=; domain=example2.com; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT"
+  end
+
+  def test_deletings_cookie_with_several_preset_domains_using_other_domain
+    @request.host = "other-domain.com"
+    get :delete_cookie_with_domains
+    assert_response :success
+    assert_cookie_header "user_name=; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT"
+  end
+
+  def test_cookies_hash_is_indifferent_access
+    [:symbol_key, :string_key].each do |cookie_key|
+      get cookie_key
+      assert_equal "david", cookies[:user_name]
+      assert_equal "david", cookies['user_name']
+    end
+  end
+
+  def test_setting_request_cookies_is_indifferent_access
+    @request.cookies.clear
+    @request.cookies[:user_name] = "andrew"
+    get :string_key_mock
+    assert_equal "david", cookies[:user_name]
+
+    @request.cookies.clear
+    @request.cookies['user_name'] = "andrew"
+    get :symbol_key_mock
+    assert_equal "david", cookies['user_name']
+  end
+
+  def test_cookies_retained_across_requests
+    get :symbol_key
+    assert_equal "user_name=david; path=/", @response.headers["Set-Cookie"]
+    assert_equal "david", cookies[:user_name]
+
+    get :noop
+    assert_nil @response.headers["Set-Cookie"]
+    assert_equal "user_name=david", @request.env['HTTP_COOKIE']
+    assert_equal "david", cookies[:user_name]
+
+    get :noop
+    assert_nil @response.headers["Set-Cookie"]
+    assert_equal "user_name=david", @request.env['HTTP_COOKIE']
+    assert_equal "david", cookies[:user_name]
+  end
+
+  def test_cookies_can_be_cleared
+    get :symbol_key
+    assert_equal "user_name=david; path=/", @response.headers["Set-Cookie"]
+    assert_equal "david", cookies[:user_name]
+
+    @request.cookies.clear
+    get :noop
+    assert_nil @response.headers["Set-Cookie"]
+    assert_nil @request.env['HTTP_COOKIE']
+    assert_nil cookies[:user_name]
+
+    get :symbol_key
+    assert_equal "user_name=david; path=/", @response.headers["Set-Cookie"]
+    assert_equal "david", cookies[:user_name]
+  end
+
+  def test_cookies_are_escaped
+    @request.cookies[:user_ids] = '1;2'
+    get :noop
+    assert_equal "user_ids=1%3B2", @request.env['HTTP_COOKIE']
+    assert_equal "1;2", cookies[:user_ids]
+  end
+
   private
     def assert_cookie_header(expected)
       header = @response.headers["Set-Cookie"]
@@ -247,4 +485,13 @@ class CookiesTest < ActionController::TestCase
         assert_equal expected.split("\n"), header
       end
     end
-end
\ No newline at end of file
+
+    def assert_not_cookie_header(expected)
+      header = @response.headers["Set-Cookie"]
+      if header.respond_to?(:to_str)
+        assert_not_equal expected.split("\n").sort, header.split("\n").sort
+      else
+        assert_not_equal expected.split("\n"), header
+      end
+    end
+end
diff --git a/actionpack/test/dispatch/middleware_stack/middleware_test.rb b/actionpack/test/dispatch/middleware_stack/middleware_test.rb
new file mode 100644
index 0000000000..9607f026db
--- /dev/null
+++ b/actionpack/test/dispatch/middleware_stack/middleware_test.rb
@@ -0,0 +1,77 @@
+require 'abstract_unit'
+require 'action_dispatch/middleware/stack'
+
+module ActionDispatch
+  class MiddlewareStack
+    class MiddlewareTest < ActiveSupport::TestCase
+      class Omg; end
+
+      {
+        'concrete'  => Omg,
+        'anonymous' => Class.new
+      }.each do |name, klass|
+
+        define_method("test_#{name}_klass") do
+          mw = Middleware.new klass
+          assert_equal klass, mw.klass
+        end
+
+        define_method("test_#{name}_==") do
+          mw1 = Middleware.new klass
+          mw2 = Middleware.new klass
+          assert_equal mw1, mw2
+        end
+
+      end
+
+      def test_string_class
+        mw = Middleware.new Omg.name
+        assert_equal Omg, mw.klass
+      end
+
+      def test_double_equal_works_with_classes
+        k = Class.new
+        mw = Middleware.new k
+        assert_operator mw, :==, k
+
+        result = mw != Class.new
+        assert result, 'middleware should not equal other anon class'
+      end
+
+      def test_double_equal_works_with_strings
+        mw = Middleware.new Omg
+        assert_operator mw, :==, Omg.name
+      end
+
+      def test_double_equal_normalizes_strings
+        mw = Middleware.new Omg
+        assert_operator mw, :==, "::#{Omg.name}"
+      end
+
+      def test_middleware_loads_classnames_from_cache
+        mw = Class.new(Middleware) {
+          attr_accessor :classcache
+        }.new(Omg.name)
+
+        fake_cache    = { mw.name => Omg }
+        mw.classcache = fake_cache
+
+        assert_equal Omg, mw.klass
+
+        fake_cache[mw.name] = Middleware
+        assert_equal Middleware, mw.klass
+      end
+
+      def test_middleware_always_returns_class
+        mw = Class.new(Middleware) {
+          attr_accessor :classcache
+        }.new(Omg)
+
+        fake_cache    = { mw.name => Middleware }
+        mw.classcache = fake_cache
+
+        assert_equal Omg, mw.klass
+      end
+    end
+  end
+end
diff --git a/actionpack/test/dispatch/middleware_stack_test.rb b/actionpack/test/dispatch/middleware_stack_test.rb
index 6a1a4f556f..831f3db3e2 100644
--- a/actionpack/test/dispatch/middleware_stack_test.rb
+++ b/actionpack/test/dispatch/middleware_stack_test.rb
@@ -4,6 +4,12 @@ class MiddlewareStackTest < ActiveSupport::TestCase
   class FooMiddleware; end
   class BarMiddleware; end
   class BazMiddleware; end
+  class BlockMiddleware
+    attr_reader :block
+    def initialize(&block)
+      @block = block
+    end
+  end
 
   def setup
     @stack = ActionDispatch::MiddlewareStack.new
@@ -39,7 +45,16 @@ class MiddlewareStackTest < ActiveSupport::TestCase
     assert_equal BazMiddleware, @stack.last.klass
     assert_equal([true, {:foo => "bar"}], @stack.last.args)
   end
-
+  
+  test "use should push middleware class with block arguments onto the stack" do
+    proc = Proc.new {}
+    assert_difference "@stack.size" do
+      @stack.use(BlockMiddleware, &proc)
+    end
+    assert_equal BlockMiddleware, @stack.last.klass
+    assert_equal proc, @stack.last.block
+  end
+  
   test "insert inserts middleware at the integer index" do
     @stack.insert(1, BazMiddleware)
     assert_equal BazMiddleware, @stack[1].klass
diff --git a/actionpack/test/dispatch/mime_type_test.rb b/actionpack/test/dispatch/mime_type_test.rb
index 369212e2d0..11cf68fdb3 100644
--- a/actionpack/test/dispatch/mime_type_test.rb
+++ b/actionpack/test/dispatch/mime_type_test.rb
@@ -6,10 +6,57 @@ class MimeTypeTest < ActiveSupport::TestCase
 
   test "parse single" do
     Mime::LOOKUP.keys.each do |mime_type|
-      assert_equal [Mime::Type.lookup(mime_type)], Mime::Type.parse(mime_type)
+      unless mime_type == 'image/*'
+        assert_equal [Mime::Type.lookup(mime_type)], Mime::Type.parse(mime_type)
+      end
     end
   end
 
+  test "unregister" do
+    begin
+      Mime::Type.register("text/x-mobile", :mobile)
+      assert defined?(Mime::MOBILE)
+      assert_equal Mime::MOBILE, Mime::LOOKUP['text/x-mobile']
+      assert_equal Mime::MOBILE, Mime::EXTENSION_LOOKUP['mobile']
+
+      Mime::Type.unregister(:mobile)
+      assert !defined?(Mime::MOBILE), "Mime::MOBILE should not be defined"
+      assert !Mime::LOOKUP.has_key?('text/x-mobile'), "Mime::LOOKUP should not have key ['text/x-mobile]"
+      assert !Mime::EXTENSION_LOOKUP.has_key?('mobile'), "Mime::EXTENSION_LOOKUP should not have key ['mobile]"
+    ensure
+      Mime.module_eval { remove_const :MOBILE if const_defined?(:MOBILE) }
+      Mime::LOOKUP.reject!{|key,_| key == 'text/x-mobile'}
+    end
+  end
+
+  test "parse text with trailing star at the beginning" do
+    accept = "text/*, text/html, application/json, multipart/form-data"
+    expect = [Mime::HTML, Mime::TEXT, Mime::JS, Mime::CSS, Mime::ICS, Mime::CSV, Mime::XML, Mime::YAML, Mime::JSON, Mime::MULTIPART_FORM]
+    parsed = Mime::Type.parse(accept)
+    assert_equal expect, parsed
+  end
+
+  test "parse text with trailing star in the end" do
+    accept = "text/html, application/json, multipart/form-data, text/*"
+    expect = [Mime::HTML, Mime::JSON, Mime::MULTIPART_FORM, Mime::TEXT, Mime::JS, Mime::CSS, Mime::ICS, Mime::CSV, Mime::XML, Mime::YAML]
+    parsed = Mime::Type.parse(accept)
+    assert_equal expect, parsed
+  end
+
+  test "parse text with trailing star" do
+    accept = "text/*"
+    expect = [Mime::HTML, Mime::TEXT, Mime::JS, Mime::CSS, Mime::ICS, Mime::CSV, Mime::XML, Mime::YAML, Mime::JSON]
+    parsed = Mime::Type.parse(accept)
+    assert_equal expect, parsed
+  end
+
+  test "parse application with trailing star" do
+    accept = "application/*"
+    expect = [Mime::HTML, Mime::JS, Mime::XML, Mime::RSS, Mime::ATOM, Mime::YAML, Mime::URL_ENCODED_FORM, Mime::JSON, Mime::PDF]
+    parsed = Mime::Type.parse(accept)
+    assert_equal expect, parsed
+  end
+
   test "parse without q" do
     accept = "text/xml,application/xhtml+xml,text/yaml,application/xml,text/html,image/png,text/plain,application/pdf,*/*"
     expect = [Mime::HTML, Mime::XML, Mime::YAML, Mime::PNG, Mime::TEXT, Mime::PDF, Mime::ALL]
@@ -41,11 +88,10 @@ class MimeTypeTest < ActiveSupport::TestCase
     begin
       Mime::Type.register("image/gif", :gif)
       assert_nothing_raised do
-        Mime::GIF
         assert_equal Mime::GIF, Mime::SET.last
       end
     ensure
-      Mime.module_eval { remove_const :GIF if const_defined?(:GIF) }
+      Mime::Type.unregister(:gif)
     end
   end
 
@@ -85,6 +131,13 @@ class MimeTypeTest < ActiveSupport::TestCase
     assert unverified.each { |type| assert !Mime.const_get(type.to_s.upcase).verify_request?, "Nonverifiable Mime Type is verified: #{type.inspect}" }
   end
 
+  test "references gives preference to symbols before strings" do
+    assert_equal :html, Mime::HTML.ref
+    another = Mime::Type.lookup("foo/bar")
+    assert_nil another.to_sym
+    assert_equal "foo/bar", another.ref
+  end
+
   test "regexp matcher" do
     assert Mime::JS =~ "text/javascript"
     assert Mime::JS =~ "application/javascript"
diff --git a/actionpack/test/dispatch/mount_test.rb b/actionpack/test/dispatch/mount_test.rb
index 00ca5ec9dc..1a032539b9 100644
--- a/actionpack/test/dispatch/mount_test.rb
+++ b/actionpack/test/dispatch/mount_test.rb
@@ -2,6 +2,17 @@ require 'abstract_unit'
 
 class TestRoutingMount < ActionDispatch::IntegrationTest
   Router = ActionDispatch::Routing::RouteSet.new
+
+  class FakeEngine
+    def self.routes
+      Object.new
+    end
+
+    def self.call(env)
+      [200, {"Content-Type" => "text/html"}, ["OK"]]
+    end
+  end
+
   Router.draw do
     SprocketsApp = lambda { |env|
       [200, {"Content-Type" => "text/html"}, ["#{env["SCRIPT_NAME"]} -- #{env["PATH_INFO"]}"]]
@@ -10,6 +21,8 @@ class TestRoutingMount < ActionDispatch::IntegrationTest
     mount SprocketsApp, :at => "/sprockets"
     mount SprocketsApp => "/shorthand"
 
+    mount FakeEngine, :at => "/fakeengine"
+
     scope "/its_a" do
       mount SprocketsApp, :at => "/sprocket"
     end
@@ -28,9 +41,14 @@ class TestRoutingMount < ActionDispatch::IntegrationTest
     get "/its_a/sprocket/omg"
     assert_equal "/its_a/sprocket -- /omg", response.body
   end
-  
+
   def test_mounting_with_shorthand
     get "/shorthand/omg"
     assert_equal "/shorthand -- /omg", response.body
   end
+
+  def test_with_fake_engine_does_not_call_invalid_method
+    get "/fakeengine"
+    assert_equal "OK", response.body
+  end
 end
\ No newline at end of file
diff --git a/actionpack/test/dispatch/prefix_generation_test.rb b/actionpack/test/dispatch/prefix_generation_test.rb
new file mode 100644
index 0000000000..18f28deee4
--- /dev/null
+++ b/actionpack/test/dispatch/prefix_generation_test.rb
@@ -0,0 +1,317 @@
+require 'abstract_unit'
+require 'rack/test'
+
+module TestGenerationPrefix
+  class Post
+    extend ActiveModel::Naming
+
+    def to_param
+      "1"
+    end
+
+    def self.model_name
+      klass = "Post"
+      def klass.name; self end
+
+      ActiveModel::Name.new(klass)
+    end
+  end
+
+  class WithMountedEngine < ActionDispatch::IntegrationTest
+    include Rack::Test::Methods
+
+    class BlogEngine
+      def self.routes
+        @routes ||= begin
+          routes = ActionDispatch::Routing::RouteSet.new
+          routes.draw do
+            match "/posts/:id", :to => "inside_engine_generating#show", :as => :post
+            match "/posts", :to => "inside_engine_generating#index", :as => :posts
+            match "/url_to_application", :to => "inside_engine_generating#url_to_application"
+            match "/polymorphic_path_for_engine", :to => "inside_engine_generating#polymorphic_path_for_engine"
+            match "/conflicting_url", :to => "inside_engine_generating#conflicting"
+          end
+
+          routes
+        end
+      end
+
+      def self.call(env)
+        env['action_dispatch.routes'] = routes
+        routes.call(env)
+      end
+    end
+
+    class RailsApplication
+      def self.routes
+        @routes ||= begin
+          routes = ActionDispatch::Routing::RouteSet.new
+          routes.draw do
+            scope "/:omg", :omg => "awesome" do
+              mount BlogEngine => "/blog", :as => "blog_engine"
+            end
+            match "/generate", :to => "outside_engine_generating#index"
+            match "/polymorphic_path_for_engine", :to => "outside_engine_generating#polymorphic_path_for_engine"
+            match "/polymorphic_with_url_for", :to => "outside_engine_generating#polymorphic_with_url_for"
+            match "/conflicting_url", :to => "outside_engine_generating#conflicting"
+            root :to => "outside_engine_generating#index"
+          end
+
+          routes
+        end
+      end
+
+      def self.call(env)
+        env['action_dispatch.routes'] = routes
+        routes.call(env)
+      end
+    end
+
+    # force draw
+    RailsApplication.routes
+
+    class ::InsideEngineGeneratingController < ActionController::Base
+      include BlogEngine.routes.url_helpers
+      include RailsApplication.routes.mounted_helpers
+
+      def index
+        render :text => posts_path
+      end
+
+      def show
+        render :text => post_path(:id => params[:id])
+      end
+
+      def url_to_application
+        path = main_app.url_for(:controller => "outside_engine_generating",
+                                :action => "index",
+                                :only_path => true)
+        render :text => path
+      end
+
+      def polymorphic_path_for_engine
+        render :text => polymorphic_path(Post.new)
+      end
+
+      def conflicting
+        render :text => "engine"
+      end
+    end
+
+    class ::OutsideEngineGeneratingController < ActionController::Base
+      include BlogEngine.routes.mounted_helpers
+
+      def index
+        render :text => blog_engine.post_path(:id => 1)
+      end
+
+      def polymorphic_path_for_engine
+        render :text => blog_engine.polymorphic_path(Post.new)
+      end
+
+      def polymorphic_with_url_for
+        render :text => blog_engine.url_for(Post.new)
+      end
+
+      def conflicting
+        render :text => "application"
+      end
+    end
+
+    class EngineObject
+      include ActionDispatch::Routing::UrlFor
+      include BlogEngine.routes.url_helpers
+    end
+
+    class AppObject
+      include ActionDispatch::Routing::UrlFor
+      include RailsApplication.routes.url_helpers
+    end
+
+    def app
+      RailsApplication
+    end
+
+    def engine_object
+      @engine_object ||= EngineObject.new
+    end
+
+    def app_object
+      @app_object ||= AppObject.new
+    end
+
+    def setup
+      RailsApplication.routes.default_url_options = {}
+    end
+
+    # Inside Engine
+    test "[ENGINE] generating engine's url use SCRIPT_NAME from request" do
+      get "/pure-awesomeness/blog/posts/1"
+      assert_equal "/pure-awesomeness/blog/posts/1", last_response.body
+    end
+
+    test "[ENGINE] generating application's url never uses SCRIPT_NAME from request" do
+      get "/pure-awesomeness/blog/url_to_application"
+      assert_equal "/generate", last_response.body
+    end
+
+    test "[ENGINE] generating application's url includes default_url_options[:script_name]" do
+      RailsApplication.routes.default_url_options = {:script_name => "/something"}
+      get "/pure-awesomeness/blog/url_to_application"
+      assert_equal "/something/generate", last_response.body
+    end
+
+    test "[ENGINE] generating application's url should give higher priority to default_url_options[:script_name]" do
+      RailsApplication.routes.default_url_options = {:script_name => "/something"}
+      get "/pure-awesomeness/blog/url_to_application", {}, 'SCRIPT_NAME' => '/foo'
+      assert_equal "/something/generate", last_response.body
+    end
+
+    test "[ENGINE] generating engine's url with polymorphic path" do
+      get "/pure-awesomeness/blog/polymorphic_path_for_engine"
+      assert_equal "/pure-awesomeness/blog/posts/1", last_response.body
+    end
+
+    test "[ENGINE] url_helpers from engine have higher priotity than application's url_helpers" do
+      get "/awesome/blog/conflicting_url"
+      assert_equal "engine", last_response.body
+    end
+
+    # Inside Application
+    test "[APP] generating engine's route includes prefix" do
+      get "/generate"
+      assert_equal "/awesome/blog/posts/1", last_response.body
+    end
+
+    test "[APP] generating engine's route includes default_url_options[:script_name]" do
+      RailsApplication.routes.default_url_options = {:script_name => "/something"}
+      get "/generate"
+      assert_equal "/something/awesome/blog/posts/1", last_response.body
+    end
+
+    test "[APP] generating engine's route should give higher priority to default_url_options[:script_name]" do
+      RailsApplication.routes.default_url_options = {:script_name => "/something"}
+      get "/generate", {}, 'SCRIPT_NAME' => "/foo"
+      assert_equal "/something/awesome/blog/posts/1", last_response.body
+    end
+
+    test "[APP] generating engine's url with polymorphic path" do
+      get "/polymorphic_path_for_engine"
+      assert_equal "/awesome/blog/posts/1", last_response.body
+    end
+
+    test "[APP] generating engine's url with url_for(@post)" do
+      get "/polymorphic_with_url_for"
+      assert_equal "http://example.org/awesome/blog/posts/1", last_response.body
+    end
+
+    # Inside any Object
+    test "[OBJECT] generating engine's route includes prefix" do
+      assert_equal "/awesome/blog/posts/1", engine_object.post_path(:id => 1)
+    end
+
+    test "[OBJECT] generating engine's route includes dynamic prefix" do
+      assert_equal "/pure-awesomeness/blog/posts/3", engine_object.post_path(:id => 3, :omg => "pure-awesomeness")
+    end
+
+    test "[OBJECT] generating engine's route includes default_url_options[:script_name]" do
+      RailsApplication.routes.default_url_options = {:script_name => "/something"}
+      assert_equal "/something/pure-awesomeness/blog/posts/3", engine_object.post_path(:id => 3, :omg => "pure-awesomeness")
+    end
+
+    test "[OBJECT] generating application's route" do
+      assert_equal "/", app_object.root_path
+    end
+
+    test "[OBJECT] generating application's route includes default_url_options[:script_name]" do
+      RailsApplication.routes.default_url_options = {:script_name => "/something"}
+      assert_equal "/something/", app_object.root_path
+    end
+
+    test "[OBJECT] generating engine's route with url_for" do
+      path = engine_object.url_for(:controller => "inside_engine_generating",
+                                   :action => "show",
+                                   :only_path => true,
+                                   :omg => "omg",
+                                   :id => 1)
+      assert_equal "/omg/blog/posts/1", path
+    end
+
+    test "[OBJECT] generating engine's route with named helpers" do
+      path = engine_object.posts_path
+      assert_equal "/awesome/blog/posts", path
+
+      path = engine_object.posts_url(:host => "example.com")
+      assert_equal "http://example.com/awesome/blog/posts", path
+    end
+
+    test "[OBJECT] generating engine's route with polymorphic_url" do
+      path = engine_object.polymorphic_path(Post.new)
+      assert_equal "/awesome/blog/posts/1", path
+
+      path = engine_object.polymorphic_url(Post.new, :host => "www.example.com")
+      assert_equal "http://www.example.com/awesome/blog/posts/1", path
+    end
+  end
+
+  class EngineMountedAtRoot < ActionDispatch::IntegrationTest
+    include Rack::Test::Methods
+
+    class BlogEngine
+      def self.routes
+        @routes ||= begin
+          routes = ActionDispatch::Routing::RouteSet.new
+          routes.draw do
+            match "/posts/:id", :to => "posts#show", :as => :post
+          end
+
+          routes
+        end
+      end
+
+      def self.call(env)
+        env['action_dispatch.routes'] = routes
+        routes.call(env)
+      end
+    end
+
+    class RailsApplication
+      def self.routes
+        @routes ||= begin
+          routes = ActionDispatch::Routing::RouteSet.new
+          routes.draw do
+            mount BlogEngine => "/"
+          end
+
+          routes
+        end
+      end
+
+      def self.call(env)
+        env['action_dispatch.routes'] = routes
+        routes.call(env)
+      end
+    end
+
+    # force draw
+    RailsApplication.routes
+
+    class ::PostsController < ActionController::Base
+      include BlogEngine.routes.url_helpers
+      include RailsApplication.routes.mounted_helpers
+
+      def show
+        render :text => post_path(:id => params[:id])
+      end
+    end
+
+    def app
+      RailsApplication
+    end
+
+    test "generating path inside engine" do
+      get "/posts/1"
+      assert_equal "/posts/1", last_response.body
+    end
+  end
+end
diff --git a/actionpack/test/dispatch/reloader_test.rb b/actionpack/test/dispatch/reloader_test.rb
new file mode 100644
index 0000000000..eaabc1feb3
--- /dev/null
+++ b/actionpack/test/dispatch/reloader_test.rb
@@ -0,0 +1,138 @@
+require 'abstract_unit'
+
+class ReloaderTest < Test::Unit::TestCase
+  Reloader = ActionDispatch::Reloader
+
+  def test_prepare_callbacks
+    a = b = c = nil
+    Reloader.to_prepare { |*args| a = b = c = 1 }
+    Reloader.to_prepare { |*args| b = c = 2 }
+    Reloader.to_prepare { |*args| c = 3 }
+
+    # Ensure to_prepare callbacks are not run when defined
+    assert_nil a || b || c
+
+    # Run callbacks
+    call_and_return_body
+
+    assert_equal 1, a
+    assert_equal 2, b
+    assert_equal 3, c
+  end
+
+  class MyBody < Array
+    def initialize(&block)
+      @on_close = block
+    end
+
+    def foo
+      "foo"
+    end
+
+    def bar
+      "bar"
+    end
+
+    def close
+      @on_close.call if @on_close
+    end
+  end
+
+  def test_returned_body_object_always_responds_to_close
+    body = call_and_return_body
+    assert_respond_to body, :close
+  end
+
+  def test_returned_body_object_behaves_like_underlying_object
+    body = call_and_return_body do
+      b = MyBody.new
+      b << "hello"
+      b << "world"
+      [200, { "Content-Type" => "text/html" }, b]
+    end
+    assert_equal 2, body.size
+    assert_equal "hello", body[0]
+    assert_equal "world", body[1]
+    assert_equal "foo", body.foo
+    assert_equal "bar", body.bar
+  end
+
+  def test_it_calls_close_on_underlying_object_when_close_is_called_on_body
+    close_called = false
+    body = call_and_return_body do
+      b = MyBody.new do
+        close_called = true
+      end
+      [200, { "Content-Type" => "text/html" }, b]
+    end
+    body.close
+    assert close_called
+  end
+
+  def test_returned_body_object_responds_to_all_methods_supported_by_underlying_object
+    body = call_and_return_body do
+      [200, { "Content-Type" => "text/html" }, MyBody.new]
+    end
+    assert_respond_to body, :size
+    assert_respond_to body, :each
+    assert_respond_to body, :foo
+    assert_respond_to body, :bar
+  end
+
+  def test_cleanup_callbacks_are_called_when_body_is_closed
+    cleaned = false
+    Reloader.to_cleanup { cleaned = true }
+
+    body = call_and_return_body
+    assert !cleaned
+
+    body.close
+    assert cleaned
+  end
+
+  def test_prepare_callbacks_arent_called_when_body_is_closed
+    prepared = false
+    Reloader.to_prepare { prepared = true }
+
+    body = call_and_return_body
+    prepared = false
+
+    body.close
+    assert !prepared
+  end
+
+  def test_manual_reloading
+    prepared = cleaned = false
+    Reloader.to_prepare { prepared = true }
+    Reloader.to_cleanup { cleaned  = true }
+
+    Reloader.prepare!
+    assert prepared
+    assert !cleaned
+
+    prepared = cleaned = false
+    Reloader.cleanup!
+    assert !prepared
+    assert cleaned
+  end
+
+  def test_cleanup_callbacks_are_called_on_exceptions
+    cleaned = false
+    Reloader.to_cleanup { cleaned  = true }
+
+    begin
+      call_and_return_body do
+        raise "error"
+      end
+    rescue
+    end
+
+    assert cleaned
+  end
+
+  private
+    def call_and_return_body(&block)
+      @reloader ||= Reloader.new(block || proc {[200, {}, 'response']})
+      @reloader.call({'rack.input' => StringIO.new('')})[2]
+    end
+end
diff --git a/actionpack/test/dispatch/request/json_params_parsing_test.rb b/actionpack/test/dispatch/request/json_params_parsing_test.rb
index 0faa99a912..34db7a4c66 100644
--- a/actionpack/test/dispatch/request/json_params_parsing_test.rb
+++ b/actionpack/test/dispatch/request/json_params_parsing_test.rb
@@ -1,6 +1,6 @@
 require 'abstract_unit'
 
-class JsonParamsParsingTest < ActionController::IntegrationTest
+class JsonParamsParsingTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     class << self
       attr_accessor :last_request_parameters
@@ -56,7 +56,7 @@ class JsonParamsParsingTest < ActionController::IntegrationTest
 
     def with_test_routing
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => ::JsonParamsParsingTest::TestController
         end
         yield
diff --git a/actionpack/test/dispatch/request/multipart_params_parsing_test.rb b/actionpack/test/dispatch/request/multipart_params_parsing_test.rb
index e3ec5cf182..3ff558ec5a 100644
--- a/actionpack/test/dispatch/request/multipart_params_parsing_test.rb
+++ b/actionpack/test/dispatch/request/multipart_params_parsing_test.rb
@@ -1,6 +1,6 @@
 require 'abstract_unit'
 
-class MultipartParamsParsingTest < ActionController::IntegrationTest
+class MultipartParamsParsingTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     class << self
       attr_accessor :last_request_parameters
@@ -36,7 +36,6 @@ class MultipartParamsParsingTest < ActionController::IntegrationTest
     assert_equal 'bar', params['foo']
 
     file = params['file']
-    assert_kind_of Tempfile, file
     assert_equal 'file.txt', file.original_filename
     assert_equal "text/plain", file.content_type
     assert_equal 'contents', file.read
@@ -49,8 +48,6 @@ class MultipartParamsParsingTest < ActionController::IntegrationTest
     file = params['file']
     foo  = params['foo']
 
-    assert_kind_of Tempfile, file
-
     assert_equal 'file.txt', file.original_filename
     assert_equal "text/plain", file.content_type
 
@@ -64,11 +61,9 @@ class MultipartParamsParsingTest < ActionController::IntegrationTest
 
     file = params['file']
 
-    assert_kind_of Tempfile, file
-
     assert_equal 'file.txt', file.original_filename
     assert_equal "text/plain", file.content_type
-    assert ('a' * 20480) == file.read
+    assert_equal(('a' * 20480), file.read)
   end
 
   test "parses binary file" do
@@ -77,13 +72,11 @@ class MultipartParamsParsingTest < ActionController::IntegrationTest
     assert_equal 'bar', params['foo']
 
     file = params['file']
-    assert_kind_of Tempfile, file
     assert_equal 'file.csv', file.original_filename
     assert_nil file.content_type
     assert_equal 'contents', file.read
 
     file = params['flowers']
-    assert_kind_of Tempfile, file
     assert_equal 'flowers.jpg', file.original_filename
     assert_equal "image/jpeg", file.content_type
     assert_equal 19512, file.size
@@ -156,7 +149,7 @@ class MultipartParamsParsingTest < ActionController::IntegrationTest
 
     def with_test_routing
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => 'multipart_params_parsing_test/test'
         end
         yield
diff --git a/actionpack/test/dispatch/request/query_string_parsing_test.rb b/actionpack/test/dispatch/request/query_string_parsing_test.rb
index 071d80c5b0..f6a1475d04 100644
--- a/actionpack/test/dispatch/request/query_string_parsing_test.rb
+++ b/actionpack/test/dispatch/request/query_string_parsing_test.rb
@@ -1,6 +1,6 @@
 require 'abstract_unit'
 
-class QueryStringParsingTest < ActionController::IntegrationTest
+class QueryStringParsingTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     class << self
       attr_accessor :last_query_parameters
@@ -108,7 +108,7 @@ class QueryStringParsingTest < ActionController::IntegrationTest
   private
     def assert_parses(expected, actual)
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => ::QueryStringParsingTest::TestController
         end
 
diff --git a/actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb b/actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb
index 0bcef81534..04a0fb6f34 100644
--- a/actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb
+++ b/actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb
@@ -1,6 +1,6 @@
 require 'abstract_unit'
 
-class UrlEncodedParamsParsingTest < ActionController::IntegrationTest
+class UrlEncodedParamsParsingTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     class << self
       attr_accessor :last_request_parameters, :last_request_type
@@ -129,7 +129,7 @@ class UrlEncodedParamsParsingTest < ActionController::IntegrationTest
   private
     def with_test_routing
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => ::UrlEncodedParamsParsingTest::TestController
         end
         yield
diff --git a/actionpack/test/dispatch/request/xml_params_parsing_test.rb b/actionpack/test/dispatch/request/xml_params_parsing_test.rb
index d44c642420..ad9de02eb4 100644
--- a/actionpack/test/dispatch/request/xml_params_parsing_test.rb
+++ b/actionpack/test/dispatch/request/xml_params_parsing_test.rb
@@ -1,6 +1,6 @@
 require 'abstract_unit'
 
-class XmlParamsParsingTest < ActionController::IntegrationTest
+class XmlParamsParsingTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     class << self
       attr_accessor :last_request_parameters
@@ -18,6 +18,7 @@ class XmlParamsParsingTest < ActionController::IntegrationTest
 
   test "parses a strict rack.input" do
     class Linted
+      undef call if method_defined?(:call)
       def call(env)
         bar = env['action_dispatch.request.request_parameters']['foo']
         result = "<ok>#{bar}</ok>"
@@ -96,7 +97,7 @@ class XmlParamsParsingTest < ActionController::IntegrationTest
   private
     def with_test_routing
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => ::XmlParamsParsingTest::TestController
         end
         yield
diff --git a/actionpack/test/dispatch/request_test.rb b/actionpack/test/dispatch/request_test.rb
index c8947aac80..f03ae7f2b3 100644
--- a/actionpack/test/dispatch/request_test.rb
+++ b/actionpack/test/dispatch/request_test.rb
@@ -1,6 +1,31 @@
 require 'abstract_unit'
 
 class RequestTest < ActiveSupport::TestCase
+
+  def url_for(options = {})
+    options.reverse_merge!(:host => 'www.example.com')
+    ActionDispatch::Http::URL.url_for(options)
+  end
+
+  test "url_for class method" do
+    e = assert_raise(ArgumentError) { url_for(:host => nil) }
+    assert_match(/Please provide the :host parameter/, e.message)
+
+    assert_equal '/books', url_for(:only_path => true, :path => '/books')
+
+    assert_equal 'http://www.example.com',  url_for
+    assert_equal 'http://api.example.com',  url_for(:subdomain => 'api')
+    assert_equal 'http://www.ror.com',      url_for(:domain => 'ror.com')
+    assert_equal 'http://api.ror.co.uk',    url_for(:host => 'www.ror.co.uk', :subdomain => 'api', :tld_length => 2)
+    assert_equal 'http://www.example.com:8080',   url_for(:port => 8080)
+    assert_equal 'https://www.example.com',       url_for(:protocol => 'https')
+    assert_equal 'http://www.example.com/docs',   url_for(:path => '/docs')
+    assert_equal 'http://www.example.com#signup', url_for(:anchor => 'signup')
+    assert_equal 'http://www.example.com/',       url_for(:trailing_slash => true)
+    assert_equal 'http://dhh:supersecret@www.example.com', url_for(:user => 'dhh', :password => 'supersecret')
+    assert_equal 'http://www.example.com?search=books',    url_for(:params => { :search => 'books' })
+  end
+
   test "remote ip" do
     request = stub_request 'REMOTE_ADDR' => '1.2.3.4'
     assert_equal '1.2.3.4', request.remote_ip
@@ -45,9 +70,9 @@ class RequestTest < ActiveSupport::TestCase
     e = assert_raise(ActionDispatch::RemoteIp::IpSpoofAttackError) {
       request.remote_ip
     }
-    assert_match /IP spoofing attack/, e.message
-    assert_match /HTTP_X_FORWARDED_FOR="1.1.1.1"/, e.message
-    assert_match /HTTP_CLIENT_IP="2.2.2.2"/, e.message
+    assert_match(/IP spoofing attack/, e.message)
+    assert_match(/HTTP_X_FORWARDED_FOR="1.1.1.1"/, e.message)
+    assert_match(/HTTP_CLIENT_IP="2.2.2.2"/, e.message)
 
     # turn IP Spoofing detection off.
     # This is useful for sites that are aimed at non-IP clients.  The typical
@@ -96,6 +121,9 @@ class RequestTest < ActiveSupport::TestCase
     request = stub_request 'HTTP_HOST' => "www.rubyonrails.co.uk"
     assert_equal "rubyonrails.co.uk", request.domain(2)
 
+    request = stub_request 'HTTP_HOST' => "www.rubyonrails.co.uk", :tld_length => 2
+    assert_equal "rubyonrails.co.uk", request.domain
+
     request = stub_request 'HTTP_HOST' => "192.168.1.200"
     assert_nil request.domain
 
@@ -116,6 +144,9 @@ class RequestTest < ActiveSupport::TestCase
     request = stub_request 'HTTP_HOST' => "dev.www.rubyonrails.co.uk"
     assert_equal %w( dev www ), request.subdomains(2)
 
+    request = stub_request 'HTTP_HOST' => "dev.www.rubyonrails.co.uk", :tld_length => 2
+    assert_equal %w( dev www ), request.subdomains
+
     request = stub_request 'HTTP_HOST' => "foobar.foobar.com"
     assert_equal %w( foobar ), request.subdomains
 
@@ -132,12 +163,46 @@ class RequestTest < ActiveSupport::TestCase
     assert_equal [], request.subdomains
   end
 
+  test "standard_port" do
+    request = stub_request
+    assert_equal 80, request.standard_port
+
+    request = stub_request 'HTTPS' => 'on'
+    assert_equal 443, request.standard_port
+  end
+
+  test "standard_port?" do
+    request = stub_request
+    assert !request.ssl?
+    assert request.standard_port?
+
+    request = stub_request 'HTTPS' => 'on'
+    assert request.ssl?
+    assert request.standard_port?
+
+    request = stub_request 'HTTP_HOST' => 'www.example.org:8080'
+    assert !request.ssl?
+    assert !request.standard_port?
+
+    request = stub_request 'HTTP_HOST' => 'www.example.org:8443', 'HTTPS' => 'on'
+    assert request.ssl?
+    assert !request.standard_port?
+  end
+
+  test "optional port" do
+    request = stub_request 'HTTP_HOST' => 'www.example.org:80'
+    assert_equal nil, request.optional_port
+
+    request = stub_request 'HTTP_HOST' => 'www.example.org:8080'
+    assert_equal 8080, request.optional_port
+  end
+
   test "port string" do
     request = stub_request 'HTTP_HOST' => 'www.example.org:80'
-    assert_equal "", request.port_string
+    assert_equal '', request.port_string
 
     request = stub_request 'HTTP_HOST' => 'www.example.org:8080'
-    assert_equal ":8080", request.port_string
+    assert_equal ':8080', request.port_string
   end
 
   test "full path" do
@@ -223,6 +288,16 @@ class RequestTest < ActiveSupport::TestCase
     assert request.ssl?
   end
 
+  test "scheme returns https when proxied" do
+    request = stub_request 'rack.url_scheme' => 'http'
+    assert !request.ssl?
+    assert_equal 'http', request.scheme
+
+    request = stub_request 'rack.url_scheme' => 'http', 'HTTP_X_FORWARDED_PROTO' => 'https'
+    assert request.ssl?
+    assert_equal 'https', request.scheme
+  end
+
   test "String request methods" do
     [:get, :post, :put, :delete].each do |method|
       request = stub_request 'REQUEST_METHOD' => method.to_s.upcase
@@ -346,6 +421,18 @@ class RequestTest < ActiveSupport::TestCase
     assert_equal({"bar" => 2}, request.query_parameters)
   end
 
+  test "parameters still accessible after rack parse error" do
+    mock_rack_env = { "QUERY_STRING" => "x[y]=1&x[y][][w]=2", "rack.input" => "foo" }
+    request = nil
+    begin
+      request = stub_request(mock_rack_env)
+      request.parameters
+    rescue TypeError
+      # rack will raise a TypeError when parsing this query string
+    end
+    assert_equal({}, request.parameters)
+  end
+
   test "formats with accept header" do
     request = stub_request 'HTTP_ACCEPT' => 'text/html'
     request.expects(:parameters).at_least_once.returns({})
@@ -428,15 +515,56 @@ class RequestTest < ActiveSupport::TestCase
 
     assert_equal "[FILTERED]", request.raw_post
     assert_equal "[FILTERED]", request.params["amount"]
-    assert_equal "1", request.params["step"]    
+    assert_equal "1", request.params["step"]
+  end
+
+  test "filtered_path returns path with filtered query string" do
+    %w(; &).each do |sep|
+      request = stub_request('QUERY_STRING' => %w(username=sikachu secret=bd4f21f api_key=b1bc3b3cd352f68d79d7).join(sep),
+        'PATH_INFO' => '/authenticate',
+        'action_dispatch.parameter_filter' => [:secret, :api_key])
+
+      path = request.filtered_path
+      assert_equal %w(/authenticate?username=sikachu secret=[FILTERED] api_key=[FILTERED]).join(sep), path
+    end
+  end
+
+  test "filtered_path should not unescape a genuine '[FILTERED]' value" do
+    request = stub_request('QUERY_STRING' => "secret=bd4f21f&genuine=%5BFILTERED%5D",
+      'PATH_INFO' => '/authenticate',
+      'action_dispatch.parameter_filter' => [:secret])
+
+    path = request.filtered_path
+    assert_equal "/authenticate?secret=[FILTERED]&genuine=%5BFILTERED%5D", path
+  end
+
+  test "filtered_path should preserve duplication of keys in query string" do
+    request = stub_request('QUERY_STRING' => "username=sikachu&secret=bd4f21f&username=fxn",
+      'PATH_INFO' => '/authenticate',
+      'action_dispatch.parameter_filter' => [:secret])
+
+    path = request.filtered_path
+    assert_equal "/authenticate?username=sikachu&secret=[FILTERED]&username=fxn", path
+  end
+
+  test "filtered_path should ignore searchparts" do
+    request = stub_request('QUERY_STRING' => "secret",
+      'PATH_INFO' => '/authenticate',
+      'action_dispatch.parameter_filter' => [:secret])
+
+    path = request.filtered_path
+    assert_equal "/authenticate?secret", path
   end
 
 protected
 
   def stub_request(env = {})
     ip_spoofing_check = env.key?(:ip_spoofing_check) ? env.delete(:ip_spoofing_check) : true
+    @trusted_proxies ||= nil
     ip_app = ActionDispatch::RemoteIp.new(Proc.new { }, ip_spoofing_check, @trusted_proxies)
+    tld_length = env.key?(:tld_length) ? env.delete(:tld_length) : 1
     ip_app.call(env)
+    ActionDispatch::Http::URL.tld_length = tld_length
     ActionDispatch::Request.new(env)
   end
 
diff --git a/actionpack/test/dispatch/response_test.rb b/actionpack/test/dispatch/response_test.rb
index c20fa10f63..6f38714b2e 100644
--- a/actionpack/test/dispatch/response_test.rb
+++ b/actionpack/test/dispatch/response_test.rb
@@ -11,9 +11,7 @@ class ResponseTest < ActiveSupport::TestCase
     status, headers, body = @response.to_a
     assert_equal 200, status
     assert_equal({
-      "Content-Type" => "text/html; charset=utf-8",
-      "Cache-Control" => "max-age=0, private, must-revalidate",
-      "ETag" => '"65a8e27d8879283831b664bd8b7f0ad4"'
+      "Content-Type" => "text/html; charset=utf-8"
     }, headers)
 
     parts = []
@@ -21,15 +19,17 @@ class ResponseTest < ActiveSupport::TestCase
     assert_equal ["Hello, World!"], parts
   end
 
+  test "status handled properly in initialize" do
+    assert_equal 200, ActionDispatch::Response.new('200 OK').status
+  end
+
   test "utf8 output" do
     @response.body = [1090, 1077, 1089, 1090].pack("U*")
 
-    status, headers, body = @response.to_a
+    status, headers, _ = @response.to_a
     assert_equal 200, status
     assert_equal({
-      "Content-Type" => "text/html; charset=utf-8",
-      "Cache-Control" => "max-age=0, private, must-revalidate",
-      "ETag" => '"ebb5e89e8a94e9dd22abf5d915d112b2"'
+      "Content-Type" => "text/html; charset=utf-8"
     }, headers)
   end
 
@@ -41,8 +41,7 @@ class ResponseTest < ActiveSupport::TestCase
     status, headers, body = @response.to_a
     assert_equal 200, status
     assert_equal({
-      "Content-Type" => "text/html; charset=utf-8",
-      "Cache-Control" => "no-cache"
+      "Content-Type" => "text/html; charset=utf-8"
     }, headers)
 
     parts = []
@@ -53,20 +52,20 @@ class ResponseTest < ActiveSupport::TestCase
   test "content type" do
     [204, 304].each do |c|
       @response.status = c.to_s
-      status, headers, body = @response.to_a
+      _, headers, _ = @response.to_a
       assert !headers.has_key?("Content-Type"), "#{c} should not have Content-Type header"
     end
 
     [200, 302, 404, 500].each do |c|
       @response.status = c.to_s
-      status, headers, body = @response.to_a
+      _, headers, _ = @response.to_a
       assert headers.has_key?("Content-Type"), "#{c} did not have Content-Type header"
     end
   end
 
   test "does not include Status header" do
     @response.status = "200 OK"
-    status, headers, body = @response.to_a
+    _, headers, _ = @response.to_a
     assert !headers.has_key?('Status')
   end
 
@@ -120,10 +119,10 @@ class ResponseTest < ActiveSupport::TestCase
   end
 
   test "read cache control" do
-    resp = ActionDispatch::Response.new.tap { |resp|
-      resp.cache_control[:public] = true
-      resp.etag = '123'
-      resp.body = 'Hello'
+    resp = ActionDispatch::Response.new.tap { |response|
+      response.cache_control[:public] = true
+      response.etag = '123'
+      response.body = 'Hello'
     }
     resp.to_a
 
@@ -135,10 +134,10 @@ class ResponseTest < ActiveSupport::TestCase
   end
 
   test "read charset and content type" do
-    resp = ActionDispatch::Response.new.tap { |resp|
-      resp.charset = 'utf-16'
-      resp.content_type = Mime::XML
-      resp.body = 'Hello'
+    resp = ActionDispatch::Response.new.tap { |response|
+      response.charset = 'utf-16'
+      response.content_type = Mime::XML
+      response.body = 'Hello'
     }
     resp.to_a
 
diff --git a/actionpack/test/dispatch/routing_assertions_test.rb b/actionpack/test/dispatch/routing_assertions_test.rb
new file mode 100644
index 0000000000..9f95d82129
--- /dev/null
+++ b/actionpack/test/dispatch/routing_assertions_test.rb
@@ -0,0 +1,103 @@
+require 'abstract_unit'
+require 'controller/fake_controllers'
+
+class SecureArticlesController < ArticlesController; end
+class BlockArticlesController < ArticlesController; end
+
+class RoutingAssertionsTest < ActionController::TestCase
+
+  def setup
+    @routes = ActionDispatch::Routing::RouteSet.new
+    @routes.draw do
+      resources :articles
+
+      scope 'secure', :constraints => { :protocol => 'https://' } do
+        resources :articles, :controller => 'secure_articles'
+      end
+
+      scope 'block', :constraints => lambda { |r| r.ssl? } do
+        resources :articles, :controller => 'block_articles'
+      end
+    end
+  end
+
+  def test_assert_generates
+    assert_generates('/articles', { :controller => 'articles', :action => 'index' })
+    assert_generates('/articles/1', { :controller => 'articles', :action => 'show', :id => '1' })
+  end
+
+  def test_assert_generates_with_defaults
+    assert_generates('/articles/1/edit', { :controller => 'articles', :action => 'edit' }, { :id => '1' })
+  end
+
+  def test_assert_generates_with_extras
+    assert_generates('/articles', { :controller => 'articles', :action => 'index', :page => '1' }, {}, { :page => '1' })
+  end
+
+  def test_assert_recognizes
+    assert_recognizes({ :controller => 'articles', :action => 'index' }, '/articles')
+    assert_recognizes({ :controller => 'articles', :action => 'show', :id => '1' }, '/articles/1')
+  end
+
+  def test_assert_recognizes_with_extras
+    assert_recognizes({ :controller => 'articles', :action => 'index', :page => '1' }, '/articles', { :page => '1' })
+  end
+ 
+  def test_assert_recognizes_with_method
+    assert_recognizes({ :controller => 'articles', :action => 'create' }, { :path => '/articles', :method => :post })
+    assert_recognizes({ :controller => 'articles', :action => 'update', :id => '1' }, { :path => '/articles/1', :method => :put })
+  end
+
+  def test_assert_recognizes_with_hash_constraint
+    assert_raise(ActionController::RoutingError) do
+      assert_recognizes({ :controller => 'secure_articles', :action => 'index' }, 'http://test.host/secure/articles')
+    end
+    assert_recognizes({ :controller => 'secure_articles', :action => 'index' }, 'https://test.host/secure/articles')
+  end
+
+  def test_assert_recognizes_with_block_constraint
+    assert_raise(ActionController::RoutingError) do
+      assert_recognizes({ :controller => 'block_articles', :action => 'index' }, 'http://test.host/block/articles')
+    end
+    assert_recognizes({ :controller => 'block_articles', :action => 'index' }, 'https://test.host/block/articles')
+  end
+
+  def test_assert_routing
+    assert_routing('/articles', :controller => 'articles', :action => 'index')
+  end
+
+  def test_assert_routing_with_defaults
+    assert_routing('/articles/1/edit', { :controller => 'articles', :action => 'edit', :id => '1' }, { :id => '1' })
+  end
+
+  def test_assert_routing_with_extras
+    assert_routing('/articles', { :controller => 'articles', :action => 'index', :page => '1' }, { }, { :page => '1' })
+  end
+
+  def test_assert_routing_with_hash_constraint
+    assert_raise(ActionController::RoutingError) do
+      assert_routing('http://test.host/secure/articles', { :controller => 'secure_articles', :action => 'index' })
+    end
+    assert_routing('https://test.host/secure/articles', { :controller => 'secure_articles', :action => 'index' })
+  end
+
+  def test_assert_routing_with_block_constraint
+    assert_raise(ActionController::RoutingError) do
+      assert_routing('http://test.host/block/articles', { :controller => 'block_articles', :action => 'index' })
+    end
+    assert_routing('https://test.host/block/articles', { :controller => 'block_articles', :action => 'index' })
+  end
+
+  def test_with_routing
+    with_routing do |routes|
+      routes.draw do
+        resources :articles, :path => 'artikel'
+      end
+
+      assert_routing('/artikel', :controller => 'articles', :action => 'index')
+      assert_raise(ActionController::RoutingError) do
+        assert_routing('/articles', { :controller => 'articles', :action => 'index' })
+      end
+    end
+  end
+end
diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index 3f090b7254..5e5758a60e 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -13,6 +13,12 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
+  class YoutubeFavoritesRedirector
+    def self.call(params, request)
+      "http://www.youtube.com/watch?v=#{params[:youtube_id]}"
+    end
+  end
+
   stub_controllers do |routes|
     Routes = routes
     Routes.draw do
@@ -40,11 +46,29 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
         get  :new, :path => "build"
         post :create, :path => "create", :as => ""
         put  :update
+        get  :remove, :action => :destroy, :as => :remove
+      end
+
+      scope "pagemark", :controller => "pagemarks", :as => :pagemark do
+        get  "new", :path => "build"
+        post "create", :as => ""
+        put  "update"
         get  "remove", :action => :destroy, :as => :remove
       end
 
       match 'account/logout' => redirect("/logout"), :as => :logout_redirect
       match 'account/login', :to => redirect("/login")
+      match 'secure', :to => redirect("/secure/login")
+
+      match 'mobile', :to => redirect(:subdomain => 'mobile')
+      match 'documentation', :to => redirect(:domain => 'example-documentation.com', :path => '')
+      match 'new_documentation', :to => redirect(:path => '/documentation/new')
+      match 'super_new_documentation', :to => redirect(:host => 'super-docs.com')
+
+      match 'stores/:name',        :to => redirect(:subdomain => 'stores', :path => '/%{name}')
+      match 'stores/:name(*rest)', :to => redirect(:subdomain => 'stores', :path => '/%{name}%{rest}')
+
+      match 'youtube_favorites/:youtube_id/:name', :to => redirect(YoutubeFavoritesRedirector)
 
       constraints(lambda { |req| true }) do
         match 'account/overview'
@@ -128,7 +152,7 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
           end
 
           member do
-            get  :some_path_with_name
+            get  'some_path_with_name'
             put  :accessible_projects
             post :resend, :generate_new_password
           end
@@ -147,6 +171,11 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
       end
 
       resources :replies do
+        collection do
+          get 'page/:page' => 'replies#index', :page => %r{\d+}
+          get ':page' => 'replies#index', :page => %r{\d+}
+        end
+
         new do
           post :preview
         end
@@ -158,7 +187,12 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
       end
 
       resources :posts, :only => [:index, :show] do
-        resources :comments, :except => :destroy
+        namespace :admin do
+          root :to => "index#index"
+        end
+        resources :comments, :except => :destroy do
+          get "views" => "comments#views", :as => :views
+        end
       end
 
       resource  :past, :only => :destroy
@@ -176,6 +210,14 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
         end
       end
 
+      scope '/hello' do
+        shallow do
+          resources :notes do
+            resources :trackbacks
+          end
+        end
+      end
+
       resources :threads, :shallow => true do
         resource :owner
         resources :messages do
@@ -187,7 +229,9 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
         end
       end
 
-      resources :sheep
+      resources :sheep do
+        get "_it", :on => :member
+      end
 
       resources :clients do
         namespace :google do
@@ -200,22 +244,28 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
       end
 
       resources :customers do
-        get "recent" => "customers#recent", :as => :recent, :on => :collection
-        get "profile" => "customers#profile", :as => :profile, :on => :member
-        post "preview" => "customers#preview", :as => :preview, :on => :new
+        get :recent, :on => :collection
+        get "profile", :on => :member
+        get "secret/profile" => "customers#secret", :on => :member
+        post "preview" => "customers#preview", :as => :another_preview, :on => :new
         resource :avatar do
-          get "thumbnail(.:format)" => "avatars#thumbnail", :as => :thumbnail, :on => :member
+          get "thumbnail" => "avatars#thumbnail", :as => :thumbnail, :on => :member
         end
         resources :invoices do
-          get "outstanding" => "invoices#outstanding", :as => :outstanding, :on => :collection
+          get "outstanding" => "invoices#outstanding", :on => :collection
           get "overdue", :to => :overdue, :on => :collection
           get "print" => "invoices#print", :as => :print, :on => :member
           post "preview" => "invoices#preview", :as => :preview, :on => :new
+          get "aged/:months", :on => :collection, :action => :aged, :as => :aged
         end
         resources :notes, :shallow => true do
           get "preview" => "notes#preview", :as => :preview, :on => :new
           get "print" => "notes#print", :as => :print, :on => :member
         end
+        get "inactive", :on => :collection
+        post "deactivate", :on => :member
+        get "old", :on => :collection, :as => :stale
+        get "export"
       end
 
       namespace :api do
@@ -337,6 +387,14 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
 
       resources :content
 
+      namespace :transport do
+        resources :taxis
+      end
+
+      namespace :medical do
+        resource :taxis
+      end
+
       scope :constraints => { :id => /\d+/ } do
         get '/tickets', :to => 'tickets#index', :as => :tickets
       end
@@ -371,6 +429,15 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
         end
       end
 
+      namespace :wiki do
+        resources :articles, :id => /[^\/]+/ do
+          resources :comments, :only => [:create, :new]
+        end
+      end
+
+      resources :wiki_pages, :path => :pages
+      resource :wiki_account, :path => :my_account
+
       scope :only => :show do
         namespace :only do
           resources :sectors, :only => :index do
@@ -405,11 +472,41 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
         end
       end
 
+      resources :sections, :id => /.+/ do
+        get :preview, :on => :member
+      end
+
+      scope :as => "routes" do
+        get "/c/:id", :as => :collision, :to => "collision#show"
+        get "/collision", :to => "collision#show"
+        get "/no_collision", :to => "collision#show", :as => nil
+
+        get "/fc/:id", :as => :forced_collision, :to => "forced_collision#show"
+        get "/forced_collision", :as => :forced_collision, :to => "forced_collision#show"
+      end
+
+      match '/purchases/:token/:filename',
+        :to => 'purchases#fetch',
+        :token => /[[:alnum:]]{10}/,
+        :filename => /(.+)/,
+        :as => :purchase
+
+      resources :lists, :id => /([A-Za-z0-9]{25})|default/ do
+        resources :todos, :id => /\d+/
+      end
+
+      scope '/countries/:country', :constraints => lambda { |params, req| %[all France].include?(params[:country]) } do
+        match '/',       :to => 'countries#index'
+        match '/cities', :to => 'countries#cities'
+      end
+
+      match '/countries/:country/(*other)', :to => redirect{ |params, req| params[:other] ? "/countries/all/#{params[:other]}" : '/countries/all' }
+
       match '/:locale/*file.:format', :to => 'files#show', :file => /path\/to\/existing\/file/
     end
   end
 
-  class TestAltApp < ActionController::IntegrationTest
+  class TestAltApp < ActionDispatch::IntegrationTest
     class AltRequest
       def initialize(env)
         @env = env
@@ -599,6 +696,55 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
+  def test_redirect_hash_with_subdomain
+    with_test_routes do
+      get '/mobile'
+      verify_redirect 'http://mobile.example.com/mobile'
+    end
+  end
+
+  def test_redirect_hash_with_domain_and_path
+    with_test_routes do
+      get '/documentation'
+      verify_redirect 'http://www.example-documentation.com'
+    end
+  end
+
+  def test_redirect_hash_with_path
+    with_test_routes do
+      get '/new_documentation'
+      verify_redirect 'http://www.example.com/documentation/new'
+    end
+  end
+
+  def test_redirect_hash_with_host
+    with_test_routes do
+      get '/super_new_documentation?section=top'
+      verify_redirect 'http://super-docs.com/super_new_documentation?section=top'
+    end
+  end
+
+  def test_redirect_hash_path_substitution
+    with_test_routes do
+      get '/stores/iernest'
+      verify_redirect 'http://stores.example.com/iernest'
+    end
+  end
+
+  def test_redirect_hash_path_substitution_with_catch_all
+    with_test_routes do
+      get '/stores/iernest/products'
+      verify_redirect 'http://stores.example.com/iernest/products'
+    end
+  end
+
+  def test_redirect_class
+    with_test_routes do
+      get '/youtube_favorites/oHg5SJYRHA0/rick-rolld'
+      verify_redirect 'http://www.youtube.com/watch?v=oHg5SJYRHA0'
+    end
+  end
+
   def test_openid
     with_test_routes do
       get '/openid/login'
@@ -613,15 +759,15 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     with_test_routes do
       get '/bookmark/build'
       assert_equal 'bookmarks#new', @response.body
-      assert_equal '/bookmark/build', new_bookmark_path
+      assert_equal '/bookmark/build', bookmark_new_path
 
       post '/bookmark/create'
       assert_equal 'bookmarks#create', @response.body
       assert_equal '/bookmark/create', bookmark_path
 
-      put '/bookmark'
+      put '/bookmark/update'
       assert_equal 'bookmarks#update', @response.body
-      assert_equal '/bookmark', update_bookmark_path
+      assert_equal '/bookmark/update', bookmark_update_path
 
       get '/bookmark/remove'
       assert_equal 'bookmarks#destroy', @response.body
@@ -629,6 +775,26 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
+  def test_pagemarks
+    with_test_routes do
+      get '/pagemark/build'
+      assert_equal 'pagemarks#new', @response.body
+      assert_equal '/pagemark/build', pagemark_new_path
+
+      post '/pagemark/create'
+      assert_equal 'pagemarks#create', @response.body
+      assert_equal '/pagemark/create', pagemark_path
+
+      put '/pagemark/update'
+      assert_equal 'pagemarks#update', @response.body
+      assert_equal '/pagemark/update', pagemark_update_path
+
+      get '/pagemark/remove'
+      assert_equal 'pagemarks#destroy', @response.body
+      assert_equal '/pagemark/remove', pagemark_remove_path
+    end
+  end
+
   def test_admin
     with_test_routes do
       get '/admin', {}, {'REMOTE_ADDR' => '192.168.1.100'}
@@ -963,6 +1129,7 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
       assert_equal '/sheep/1', sheep_path(1)
       assert_equal '/sheep/new', new_sheep_path
       assert_equal '/sheep/1/edit', edit_sheep_path(1)
+      assert_equal '/sheep/1/_it', _it_sheep_path(1)
     end
   end
 
@@ -1141,14 +1308,6 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
-  def test_index
-    with_test_routes do
-      assert_equal '/info', info_path
-      get '/info'
-      assert_equal 'projects#info', @response.body
-    end
-  end
-
   def test_match_shorthand_with_no_scope
     with_test_routes do
       assert_equal '/account/overview', account_overview_path
@@ -1165,6 +1324,12 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
+  def test_dynamically_generated_helpers_on_collection_do_not_clobber_resources_url_helper
+    with_test_routes do
+      assert_equal '/replies', replies_path
+    end
+  end
+
   def test_scoped_controller_with_namespace_and_action
     with_test_routes do
       assert_equal '/account/twitter/callback', account_callback_path("twitter")
@@ -1524,11 +1689,66 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
+  def test_shallow_nested_resources_within_scope
+    with_test_routes do
+
+      get '/hello/notes/1/trackbacks'
+      assert_equal 'trackbacks#index', @response.body
+      assert_equal '/hello/notes/1/trackbacks', note_trackbacks_path(:note_id => 1)
+
+      get '/hello/notes/1/edit'
+      assert_equal 'notes#edit', @response.body
+      assert_equal '/hello/notes/1/edit', edit_note_path(:id => '1')
+
+      get '/hello/notes/1/trackbacks/new'
+      assert_equal 'trackbacks#new', @response.body
+      assert_equal '/hello/notes/1/trackbacks/new', new_note_trackback_path(:note_id => 1)
+
+      get '/hello/trackbacks/1'
+      assert_equal 'trackbacks#show', @response.body
+      assert_equal '/hello/trackbacks/1', trackback_path(:id => '1')
+
+      get '/hello/trackbacks/1/edit'
+      assert_equal 'trackbacks#edit', @response.body
+      assert_equal '/hello/trackbacks/1/edit', edit_trackback_path(:id => '1')
+
+      put '/hello/trackbacks/1'
+      assert_equal 'trackbacks#update', @response.body
+
+      post '/hello/notes/1/trackbacks'
+      assert_equal 'trackbacks#create', @response.body
+
+      delete '/hello/trackbacks/1'
+      assert_equal 'trackbacks#destroy', @response.body
+
+      get '/hello/notes'
+      assert_equal 'notes#index', @response.body
+
+      post '/hello/notes'
+      assert_equal 'notes#create', @response.body
+
+      get '/hello/notes/new'
+      assert_equal 'notes#new', @response.body
+      assert_equal '/hello/notes/new', new_note_path
+
+      get '/hello/notes/1'
+      assert_equal 'notes#show', @response.body
+      assert_equal '/hello/notes/1', note_path(:id => 1)
+
+      put '/hello/notes/1'
+      assert_equal 'notes#update', @response.body
+
+      delete '/hello/notes/1'
+      assert_equal 'notes#destroy', @response.body
+    end
+  end
+
   def test_custom_resource_routes_are_scoped
     with_test_routes do
       assert_equal '/customers/recent', recent_customers_path
       assert_equal '/customers/1/profile', profile_customer_path(:id => '1')
-      assert_equal '/customers/new/preview', preview_new_customer_path
+      assert_equal '/customers/1/secret/profile', secret_profile_customer_path(:id => '1')
+      assert_equal '/customers/new/preview', another_preview_new_customer_path
       assert_equal '/customers/1/avatar/thumbnail.jpg', thumbnail_customer_avatar_path(:customer_id => '1', :format => :jpg)
       assert_equal '/customers/1/invoices/outstanding', outstanding_customer_invoices_path(:customer_id => '1')
       assert_equal '/customers/1/invoices/2/print', print_customer_invoice_path(:customer_id => '1', :id => '2')
@@ -1541,6 +1761,9 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
 
       get '/customers/1/invoices/overdue'
       assert_equal 'invoices#overdue', @response.body
+
+      get '/customers/1/secret/profile'
+      assert_equal 'customers#secret', @response.body
     end
   end
 
@@ -1884,11 +2107,269 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
+  def test_resources_are_not_pluralized
+    with_test_routes do
+      get '/transport/taxis'
+      assert_equal 'transport/taxis#index', @response.body
+      assert_equal '/transport/taxis', transport_taxis_path
+
+      get '/transport/taxis/new'
+      assert_equal 'transport/taxis#new', @response.body
+      assert_equal '/transport/taxis/new', new_transport_taxi_path
+
+      post '/transport/taxis'
+      assert_equal 'transport/taxis#create', @response.body
+
+      get '/transport/taxis/1'
+      assert_equal 'transport/taxis#show', @response.body
+      assert_equal '/transport/taxis/1', transport_taxi_path(:id => '1')
+
+      get '/transport/taxis/1/edit'
+      assert_equal 'transport/taxis#edit', @response.body
+      assert_equal '/transport/taxis/1/edit', edit_transport_taxi_path(:id => '1')
+
+      put '/transport/taxis/1'
+      assert_equal 'transport/taxis#update', @response.body
+
+      delete '/transport/taxis/1'
+      assert_equal 'transport/taxis#destroy', @response.body
+    end
+  end
+
+  def test_singleton_resources_are_not_singularized
+    with_test_routes do
+      get '/medical/taxis/new'
+      assert_equal 'medical/taxes#new', @response.body
+      assert_equal '/medical/taxis/new', new_medical_taxis_path
+
+      post '/medical/taxis'
+      assert_equal 'medical/taxes#create', @response.body
+
+      get '/medical/taxis'
+      assert_equal 'medical/taxes#show', @response.body
+      assert_equal '/medical/taxis', medical_taxis_path
+
+      get '/medical/taxis/edit'
+      assert_equal 'medical/taxes#edit', @response.body
+      assert_equal '/medical/taxis/edit', edit_medical_taxis_path
+
+      put '/medical/taxis'
+      assert_equal 'medical/taxes#update', @response.body
+
+      delete '/medical/taxis'
+      assert_equal 'medical/taxes#destroy', @response.body
+    end
+  end
+
+  def test_greedy_resource_id_regexp_doesnt_match_edit_and_custom_action
+    with_test_routes do
+      get '/sections/1/edit'
+      assert_equal 'sections#edit', @response.body
+      assert_equal '/sections/1/edit', edit_section_path(:id => '1')
+
+      get '/sections/1/preview'
+      assert_equal 'sections#preview', @response.body
+      assert_equal '/sections/1/preview', preview_section_path(:id => '1')
+    end
+  end
+
+  def test_resource_constraints_are_pushed_to_scope
+    with_test_routes do
+      get '/wiki/articles/Ruby_on_Rails_3.0'
+      assert_equal 'wiki/articles#show', @response.body
+      assert_equal '/wiki/articles/Ruby_on_Rails_3.0', wiki_article_path(:id => 'Ruby_on_Rails_3.0')
+
+      get '/wiki/articles/Ruby_on_Rails_3.0/comments/new'
+      assert_equal 'wiki/comments#new', @response.body
+      assert_equal '/wiki/articles/Ruby_on_Rails_3.0/comments/new', new_wiki_article_comment_path(:article_id => 'Ruby_on_Rails_3.0')
+
+      post '/wiki/articles/Ruby_on_Rails_3.0/comments'
+      assert_equal 'wiki/comments#create', @response.body
+      assert_equal '/wiki/articles/Ruby_on_Rails_3.0/comments', wiki_article_comments_path(:article_id => 'Ruby_on_Rails_3.0')
+    end
+  end
+
+  def test_resources_path_can_be_a_symbol
+    with_test_routes do
+      get '/pages'
+      assert_equal 'wiki_pages#index', @response.body
+      assert_equal '/pages', wiki_pages_path
+
+      get '/pages/Ruby_on_Rails'
+      assert_equal 'wiki_pages#show', @response.body
+      assert_equal '/pages/Ruby_on_Rails', wiki_page_path(:id => 'Ruby_on_Rails')
+
+      get '/my_account'
+      assert_equal 'wiki_accounts#show', @response.body
+      assert_equal '/my_account', wiki_account_path
+    end
+  end
+
+  def test_redirect_https
+    with_test_routes do
+      with_https do
+        get '/secure'
+        verify_redirect 'https://www.example.com/secure/login'
+      end
+    end
+  end
+
+  def test_symbolized_path_parameters_is_not_stale
+    get '/countries/France'
+    assert_equal 'countries#index', @response.body
+
+    get '/countries/France/cities'
+    assert_equal 'countries#cities', @response.body
+
+    get '/countries/UK'
+    verify_redirect 'http://www.example.com/countries/all'
+
+    get '/countries/UK/cities'
+    verify_redirect 'http://www.example.com/countries/all/cities'
+  end
+
+  def test_custom_resource_actions_defined_using_string
+    get '/customers/inactive'
+    assert_equal 'customers#inactive', @response.body
+    assert_equal '/customers/inactive', inactive_customers_path
+
+    post '/customers/1/deactivate'
+    assert_equal 'customers#deactivate', @response.body
+    assert_equal '/customers/1/deactivate', deactivate_customer_path(:id => '1')
+
+    get '/customers/old'
+    assert_equal 'customers#old', @response.body
+    assert_equal '/customers/old', stale_customers_path
+
+    get '/customers/1/invoices/aged/3'
+    assert_equal 'invoices#aged', @response.body
+    assert_equal '/customers/1/invoices/aged/3', aged_customer_invoices_path(:customer_id => '1', :months => '3')
+  end
+
+  def test_route_defined_in_resources_scope_level
+    get '/customers/1/export'
+    assert_equal 'customers#export', @response.body
+    assert_equal '/customers/1/export', customer_export_path(:customer_id => '1')
+  end
+
+  def test_named_character_classes_in_regexp_constraints
+    get '/purchases/315004be7e/Ruby_on_Rails_3.pdf'
+    assert_equal 'purchases#fetch', @response.body
+    assert_equal '/purchases/315004be7e/Ruby_on_Rails_3.pdf', purchase_path(:token => '315004be7e', :filename => 'Ruby_on_Rails_3.pdf')
+  end
+
+  def test_nested_resource_constraints
+    get '/lists/01234012340123401234fffff'
+    assert_equal 'lists#show', @response.body
+    assert_equal '/lists/01234012340123401234fffff', list_path(:id => '01234012340123401234fffff')
+
+    get '/lists/01234012340123401234fffff/todos/1'
+    assert_equal 'todos#show', @response.body
+    assert_equal '/lists/01234012340123401234fffff/todos/1', list_todo_path(:list_id => '01234012340123401234fffff', :id => '1')
+
+    get '/lists/2/todos/1'
+    assert_equal 'Not Found', @response.body
+    assert_raises(ActionController::RoutingError){ list_todo_path(:list_id => '2', :id => '1') }
+  end
+
+  def test_named_routes_collision_is_avoided_unless_explicitly_given_as
+    assert_equal "/c/1", routes_collision_path(1)
+    assert_equal "/forced_collision", routes_forced_collision_path
+  end
+
+  def test_explicitly_avoiding_the_named_route
+    assert !respond_to?(:routes_no_collision_path)
+  end
+
+  def test_controller_name_with_leading_slash_raise_error
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { get '/feeds/:service', :to => '/feeds#show' }
+      end
+    end
+
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { get '/feeds/:service', :controller => '/feeds', :action => 'show' }
+      end
+    end
+
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { get '/api/feeds/:service', :to => '/api/feeds#show' }
+      end
+    end
+
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { controller("/feeds") { get '/feeds/:service', :to => :show } }
+      end
+    end
+
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { resources :feeds, :controller => '/feeds' }
+      end
+    end
+  end
+
+  def test_invalid_route_name_raises_error
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { get '/products', :to => 'products#index', :as => 'products ' }
+      end
+    end
+
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { get '/products', :to => 'products#index', :as => ' products' }
+      end
+    end
+
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { get '/products', :to => 'products#index', :as => 'products!' }
+      end
+    end
+
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { get '/products', :to => 'products#index', :as => 'products index' }
+      end
+    end
+
+    assert_raise(ArgumentError) do
+      self.class.stub_controllers do |routes|
+        routes.draw { get '/products', :to => 'products#index', :as => '1products' }
+      end
+    end
+  end
+
+  def test_nested_route_in_nested_resource
+    get "/posts/1/comments/2/views"
+    assert_equal "comments#views", @response.body
+    assert_equal "/posts/1/comments/2/views", post_comment_views_path(:post_id => '1', :comment_id => '2')
+  end
+
+  def test_root_in_deeply_nested_scope
+    get "/posts/1/admin"
+    assert_equal "admin/index#index", @response.body
+    assert_equal "/posts/1/admin", post_admin_root_path(:post_id => '1')
+  end
+
 private
   def with_test_routes
     yield
   end
 
+  def with_https
+    old_https = https?
+    https!
+    yield
+  ensure
+    https!(old_https)
+  end
+
   def verify_redirect(url, status=301)
     assert_equal status, @response.status
     assert_equal url, @response.headers['Location']
@@ -1899,3 +2380,96 @@ private
     %(<html><body>You are being <a href="#{ERB::Util.h(url)}">redirected</a>.</body></html>)
   end
 end
+
+class TestAppendingRoutes < ActionDispatch::IntegrationTest
+  def simple_app(resp)
+    lambda { |e| [ 200, { 'Content-Type' => 'text/plain' }, [resp] ] }
+  end
+
+  setup do
+    s = self
+    @app = ActionDispatch::Routing::RouteSet.new
+    @app.append do
+      match '/hello'   => s.simple_app('fail')
+      match '/goodbye' => s.simple_app('goodbye')
+    end
+
+    @app.draw do
+      match '/hello' => s.simple_app('hello')
+    end
+  end
+
+  def test_goodbye_should_be_available
+    get '/goodbye'
+    assert_equal 'goodbye', @response.body
+  end
+
+  def test_hello_should_not_be_overwritten
+    get '/hello'
+    assert_equal 'hello', @response.body
+  end
+
+  def test_missing_routes_are_still_missing
+    get '/random'
+    assert_equal 404, @response.status
+  end
+end
+
+class TestDefaultScope < ActionDispatch::IntegrationTest
+  module ::Blog
+    class PostsController < ActionController::Base
+      def index
+        render :text => "blog/posts#index"
+      end
+    end
+  end
+
+  DefaultScopeRoutes = ActionDispatch::Routing::RouteSet.new
+  DefaultScopeRoutes.default_scope = {:module => :blog}
+  DefaultScopeRoutes.draw do
+    resources :posts
+  end
+
+  def app
+    DefaultScopeRoutes
+  end
+
+  include DefaultScopeRoutes.url_helpers
+
+  def test_default_scope
+    get '/posts'
+    assert_equal "blog/posts#index", @response.body
+  end
+end
+
+class TestHttpMethods < ActionDispatch::IntegrationTest
+  RFC2616 = %w(OPTIONS GET HEAD POST PUT DELETE TRACE CONNECT)
+  RFC2518 = %w(PROPFIND PROPPATCH MKCOL COPY MOVE LOCK UNLOCK)
+  RFC3253 = %w(VERSION-CONTROL REPORT CHECKOUT CHECKIN UNCHECKOUT MKWORKSPACE UPDATE LABEL MERGE BASELINE-CONTROL MKACTIVITY)
+  RFC3648 = %w(ORDERPATCH)
+  RFC3744 = %w(ACL)
+  RFC5323 = %w(SEARCH)
+  RFC5789 = %w(PATCH)
+
+  def simple_app(response)
+    lambda { |env| [ 200, { 'Content-Type' => 'text/plain' }, [response] ] }
+  end
+
+  setup do
+    s = self
+    @app = ActionDispatch::Routing::RouteSet.new
+
+    @app.draw do
+      (RFC2616 + RFC2518 + RFC3253 + RFC3648 + RFC3744 + RFC5323 + RFC5789).each do |method|
+        match '/' => s.simple_app(method), :via => method.underscore.to_sym
+      end
+    end
+  end
+
+  (RFC2616 + RFC2518 + RFC3253 + RFC3648 + RFC3744 + RFC5323 + RFC5789).each do |method|
+    test "request method #{method.underscore} can be matched" do
+      get '/', nil, 'REQUEST_METHOD' => method
+      assert_equal method, @response.body
+    end
+  end
+end
diff --git a/actionpack/test/dispatch/session/cookie_store_test.rb b/actionpack/test/dispatch/session/cookie_store_test.rb
index 3864821ef0..27f55fd7ab 100644
--- a/actionpack/test/dispatch/session/cookie_store_test.rb
+++ b/actionpack/test/dispatch/session/cookie_store_test.rb
@@ -1,7 +1,7 @@
 require 'abstract_unit'
 require 'stringio'
 
-class CookieStoreTest < ActionController::IntegrationTest
+class CookieStoreTest < ActionDispatch::IntegrationTest
   SessionKey = '_myapp_session'
   SessionSecret = 'b3c631c314c0bbca50c1b2843150fe33'
 
@@ -53,18 +53,6 @@ class CookieStoreTest < ActionController::IntegrationTest
     def rescue_action(e) raise end
   end
 
-  def test_raises_argument_error_if_missing_session_key
-    assert_raise(ArgumentError, nil.inspect) {
-      ActionDispatch::Session::CookieStore.new(nil,
-        :key => nil, :secret => SessionSecret)
-    }
-
-    assert_raise(ArgumentError, ''.inspect) {
-      ActionDispatch::Session::CookieStore.new(nil,
-        :key => '', :secret => SessionSecret)
-    }
-  end
-
   def test_setting_session_value
     with_test_route_set do
       get '/set_session_value'
@@ -106,6 +94,23 @@ class CookieStoreTest < ActionController::IntegrationTest
     end
   end
 
+  def test_does_not_set_secure_cookies_over_http
+    with_test_route_set(:secure => true) do
+      get '/set_session_value'
+      assert_response :success
+      assert_equal nil, headers['Set-Cookie']
+    end
+  end
+
+  def test_does_set_secure_cookies_over_https
+    with_test_route_set(:secure => true) do
+      get '/set_session_value', nil, 'HTTPS' => 'on'
+      assert_response :success
+      assert_equal "_myapp_session=#{response.body}; path=/; secure; HttpOnly",
+        headers['Set-Cookie']
+    end
+  end
+
   # {:foo=>#<SessionAutoloadTest::Foo bar:"baz">, :session_id=>"ce8b0752a6ab7c7af3cdb8a80e6b9e46"}
   SignedSerializedCookie = "BAh7BzoIZm9vbzodU2Vzc2lvbkF1dG9sb2FkVGVzdDo6Rm9vBjoJQGJhciIIYmF6Og9zZXNzaW9uX2lkIiVjZThiMDc1MmE2YWI3YzdhZjNjZGI4YTgwZTZiOWU0Ng==--2bf3af1ae8bd4e52b9ac2099258ace0c380e601c"
 
@@ -118,11 +123,11 @@ class CookieStoreTest < ActionController::IntegrationTest
         assert_equal 'id: ce8b0752a6ab7c7af3cdb8a80e6b9e46', response.body, "should auto-load unloaded class"
       end
     end
-  end  
-  
+  end
+
   def test_deserializes_unloaded_classes_on_get_value
     with_test_route_set do
-      with_autoload_path "session_autoload_test" do 
+      with_autoload_path "session_autoload_test" do
         cookies[SessionKey] = SignedSerializedCookie
         get '/get_session_value'
         assert_response :success
@@ -189,7 +194,6 @@ class CookieStoreTest < ActionController::IntegrationTest
     with_test_route_set do
       get '/set_session_value'
       assert_response :success
-      session_payload = response.body
       assert_equal "_myapp_session=#{response.body}; path=/; HttpOnly",
         headers['Set-Cookie']
 
@@ -262,12 +266,12 @@ class CookieStoreTest < ActionController::IntegrationTest
   def test_session_store_with_explicit_domain
     with_test_route_set(:domain => "example.es") do
       get '/set_session_value'
-      assert_match /domain=example\.es/, headers['Set-Cookie']
+      assert_match(/domain=example\.es/, headers['Set-Cookie'])
       headers['Set-Cookie']
     end
   end
 
-  def test_session_store_without_domain 
+  def test_session_store_without_domain
     with_test_route_set do
       get '/set_session_value'
       assert_no_match(/domain\=/, headers['Set-Cookie'])
@@ -298,7 +302,7 @@ class CookieStoreTest < ActionController::IntegrationTest
 
     def with_test_route_set(options = {})
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => ::CookieStoreTest::TestController
         end
 
diff --git a/actionpack/test/dispatch/session/mem_cache_store_test.rb b/actionpack/test/dispatch/session/mem_cache_store_test.rb
index 9bd6f9b8c4..8502bc547b 100644
--- a/actionpack/test/dispatch/session/mem_cache_store_test.rb
+++ b/actionpack/test/dispatch/session/mem_cache_store_test.rb
@@ -1,7 +1,7 @@
 require 'abstract_unit'
 
 # You need to start a memcached server inorder to run these tests
-class MemCacheStoreTest < ActionController::IntegrationTest
+class MemCacheStoreTest < ActionDispatch::IntegrationTest
   class TestController < ActionController::Base
     def no_session_access
       head :ok
@@ -11,7 +11,7 @@ class MemCacheStoreTest < ActionController::IntegrationTest
       session[:foo] = "bar"
       head :ok
     end
-    
+
     def set_serialized_session_value
       session[:foo] = SessionAutoloadTest::Foo.new
       head :ok
@@ -174,7 +174,7 @@ class MemCacheStoreTest < ActionController::IntegrationTest
   private
     def with_test_route_set
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match ':action', :to => ::MemCacheStoreTest::TestController
         end
 
diff --git a/actionpack/test/dispatch/show_exceptions_test.rb b/actionpack/test/dispatch/show_exceptions_test.rb
index 4966527f4d..2a478c214f 100644
--- a/actionpack/test/dispatch/show_exceptions_test.rb
+++ b/actionpack/test/dispatch/show_exceptions_test.rb
@@ -1,20 +1,7 @@
 require 'abstract_unit'
 
-module ActionDispatch
-  class ShowExceptions
-    private
-      def public_path
-        "#{FIXTURE_LOAD_PATH}/public"
-      end
-
-      # Silence logger
-      def logger
-        nil
-      end
-  end
-end
+class ShowExceptionsTest < ActionDispatch::IntegrationTest
 
-class ShowExceptionsTest < ActionController::IntegrationTest
   Boomer = lambda do |env|
     req = ActionDispatch::Request.new(env)
     case req.path
@@ -26,6 +13,8 @@ class ShowExceptionsTest < ActionController::IntegrationTest
       raise ActionController::NotImplemented
     when "/unprocessable_entity"
       raise ActionController::InvalidAuthenticityToken
+    when "/not_found_original_exception"
+      raise ActionView::Template::Error.new('template', {}, AbstractController::ActionNotFound.new)
     else
       raise "puke!"
     end
@@ -58,15 +47,15 @@ class ShowExceptionsTest < ActionController::IntegrationTest
 
       get "/", {}, {'action_dispatch.show_exceptions' => true}
       assert_response 500
-      assert_match /puke/, body
+      assert_match(/puke/, body)
 
       get "/not_found", {}, {'action_dispatch.show_exceptions' => true}
       assert_response 404
-      assert_match /#{ActionController::UnknownAction.name}/, body
+      assert_match(/#{ActionController::UnknownAction.name}/, body)
 
       get "/method_not_allowed", {}, {'action_dispatch.show_exceptions' => true}
       assert_response 405
-      assert_match /ActionController::MethodNotAllowed/, body
+      assert_match(/ActionController::MethodNotAllowed/, body)
     end
   end
 
@@ -96,15 +85,15 @@ class ShowExceptionsTest < ActionController::IntegrationTest
 
     get "/", {}, {'action_dispatch.show_exceptions' => true}
     assert_response 500
-    assert_match /puke/, body
+    assert_match(/puke/, body)
 
     get "/not_found", {}, {'action_dispatch.show_exceptions' => true}
     assert_response 404
-    assert_match /#{ActionController::UnknownAction.name}/, body
+    assert_match(/#{ActionController::UnknownAction.name}/, body)
 
     get "/method_not_allowed", {}, {'action_dispatch.show_exceptions' => true}
     assert_response 405
-    assert_match /ActionController::MethodNotAllowed/, body
+    assert_match(/ActionController::MethodNotAllowed/, body)
   end
 
   test "does not show filtered parameters" do
@@ -113,6 +102,23 @@ class ShowExceptionsTest < ActionController::IntegrationTest
     get "/", {"foo"=>"bar"}, {'action_dispatch.show_exceptions' => true,
       'action_dispatch.parameter_filter' => [:foo]}
     assert_response 500
-    assert_match "&quot;foo&quot;=&gt;&quot;[FILTERED]&quot;", body
+    assert_match("&quot;foo&quot;=&gt;&quot;[FILTERED]&quot;", body)
+  end
+
+  test "show registered original exception for wrapped exceptions when consider_all_requests_local is false" do
+    @app = ProductionApp
+    self.remote_addr = '208.77.188.166'
+
+    get "/not_found_original_exception", {}, {'action_dispatch.show_exceptions' => true}
+    assert_response 404
+    assert_match(/404 error/, body)
+  end
+
+  test "show registered original exception for wrapped exceptions when consider_all_requests_local is true" do
+    @app = DevelopmentApp
+
+    get "/not_found_original_exception", {}, {'action_dispatch.show_exceptions' => true}
+    assert_response 404
+    assert_match(/AbstractController::ActionNotFound/, body)
   end
 end
diff --git a/actionpack/test/dispatch/static_test.rb b/actionpack/test/dispatch/static_test.rb
index e6957bb0ea..655745a848 100644
--- a/actionpack/test/dispatch/static_test.rb
+++ b/actionpack/test/dispatch/static_test.rb
@@ -1,35 +1,81 @@
 require 'abstract_unit'
 
+module StaticTests
+  def test_serves_dynamic_content
+    assert_equal "Hello, World!", get("/nofile").body
+  end
+
+  def test_serves_static_index_at_root
+    assert_html "/index.html", get("/index.html")
+    assert_html "/index.html", get("/index")
+    assert_html "/index.html", get("/")
+    assert_html "/index.html", get("")
+  end
+
+  def test_serves_static_file_in_directory
+    assert_html "/foo/bar.html", get("/foo/bar.html")
+    assert_html "/foo/bar.html", get("/foo/bar/")
+    assert_html "/foo/bar.html", get("/foo/bar")
+  end
+
+  def test_serves_static_index_file_in_directory
+    assert_html "/foo/index.html", get("/foo/index.html")
+    assert_html "/foo/index.html", get("/foo/")
+    assert_html "/foo/index.html", get("/foo")
+  end
+
+  private
+
+    def assert_html(body, response)
+      assert_equal body, response.body
+      assert_equal "text/html", response.headers["Content-Type"]
+    end
+
+    def get(path)
+      Rack::MockRequest.new(@app).request("GET", path)
+    end
+end
+
 class StaticTest < ActiveSupport::TestCase
   DummyApp = lambda { |env|
     [200, {"Content-Type" => "text/plain"}, ["Hello, World!"]]
   }
   App = ActionDispatch::Static.new(DummyApp, "#{FIXTURE_LOAD_PATH}/public")
 
-  test "serves dynamic content" do
-    assert_equal "Hello, World!", get("/nofile")
+  def setup
+    @app = App
   end
 
-  test "serves static index at root" do
-    assert_equal "/index.html", get("/index.html")
-    assert_equal "/index.html", get("/index")
-    assert_equal "/index.html", get("/")
-  end
+  include StaticTests
+end
 
-  test "serves static file in directory" do
-    assert_equal "/foo/bar.html", get("/foo/bar.html")
-    assert_equal "/foo/bar.html", get("/foo/bar/")
-    assert_equal "/foo/bar.html", get("/foo/bar")
-  end
+class MultipleDirectorisStaticTest < ActiveSupport::TestCase
+  DummyApp = lambda { |env|
+    [200, {"Content-Type" => "text/plain"}, ["Hello, World!"]]
+  }
+  App = ActionDispatch::Static.new(DummyApp,
+            { "/"     => "#{FIXTURE_LOAD_PATH}/public",
+              "/blog" => "#{FIXTURE_LOAD_PATH}/blog_public",
+              "/foo"  => "#{FIXTURE_LOAD_PATH}/non_existing_dir"
+            })
 
-  test "serves static index file in directory" do
-    assert_equal "/foo/index.html", get("/foo/index.html")
-    assert_equal "/foo/index.html", get("/foo/")
-    assert_equal "/foo/index.html", get("/foo")
+  def setup
+    @app = App
   end
 
-  private
-    def get(path)
-      Rack::MockRequest.new(App).request("GET", path).body
-    end
+  include StaticTests
+
+  test "serves files from other mounted directories" do
+    assert_html "/blog/index.html", get("/blog/index.html")
+    assert_html "/blog/index.html", get("/blog/index")
+    assert_html "/blog/index.html", get("/blog/")
+
+    assert_html "/blog/blog.html", get("/blog/blog/")
+    assert_html "/blog/blog.html", get("/blog/blog.html")
+    assert_html "/blog/blog.html", get("/blog/blog")
+
+    assert_html "/blog/subdir/index.html", get("/blog/subdir/index.html")
+    assert_html "/blog/subdir/index.html", get("/blog/subdir/")
+    assert_html "/blog/subdir/index.html", get("/blog/subdir")
+  end
 end
diff --git a/actionpack/test/dispatch/test_request_test.rb b/actionpack/test/dispatch/test_request_test.rb
index e42ade73d1..81a8c24525 100644
--- a/actionpack/test/dispatch/test_request_test.rb
+++ b/actionpack/test/dispatch/test_request_test.rb
@@ -36,10 +36,10 @@ class TestRequestTest < ActiveSupport::TestCase
 
     req.cookies["user_name"] = "david"
     assert_equal({"user_name" => "david"}, req.cookies)
-    assert_equal "user_name=david;", req.env["HTTP_COOKIE"]
+    assert_equal "user_name=david", req.env["HTTP_COOKIE"]
 
     req.cookies["login"] = "XJ-122"
     assert_equal({"user_name" => "david", "login" => "XJ-122"}, req.cookies)
-    assert_equal %w(login=XJ-122 user_name=david), req.env["HTTP_COOKIE"].split(/; ?/).sort
+    assert_equal %w(login=XJ-122 user_name=david), req.env["HTTP_COOKIE"].split(/; /).sort
   end
 end
diff --git a/actionpack/test/dispatch/test_response_test.rb b/actionpack/test/dispatch/test_response_test.rb
new file mode 100644
index 0000000000..dc17668def
--- /dev/null
+++ b/actionpack/test/dispatch/test_response_test.rb
@@ -0,0 +1,21 @@
+require 'abstract_unit'
+
+class TestResponseTest < ActiveSupport::TestCase
+  def assert_response_code_range(range, predicate)
+    response = ActionDispatch::TestResponse.new
+    (0..599).each do |status|
+      response.status = status
+      assert_equal range.include?(status), response.send(predicate),
+                   "ActionDispatch::TestResponse.new(#{status}).#{predicate}"
+    end
+  end
+
+  test "helpers" do
+    assert_response_code_range 200..299, :success?
+    assert_response_code_range [404],    :missing?
+    assert_response_code_range 300..399, :redirect?
+    assert_response_code_range 500..599, :error?
+    assert_response_code_range 500..599, :server_error?
+    assert_response_code_range 400..499, :client_error?
+  end
+end
diff --git a/actionpack/test/dispatch/uploaded_file_test.rb b/actionpack/test/dispatch/uploaded_file_test.rb
new file mode 100644
index 0000000000..e2a7f1bad7
--- /dev/null
+++ b/actionpack/test/dispatch/uploaded_file_test.rb
@@ -0,0 +1,70 @@
+require 'abstract_unit'
+
+module ActionDispatch
+  class UploadedFileTest < ActiveSupport::TestCase
+    def test_constructor_with_argument_error
+      assert_raises(ArgumentError) do
+        Http::UploadedFile.new({})
+      end
+    end
+
+    def test_original_filename
+      uf = Http::UploadedFile.new(:filename => 'foo', :tempfile => Object.new)
+      assert_equal 'foo', uf.original_filename
+    end
+
+    def test_content_type
+      uf = Http::UploadedFile.new(:type => 'foo', :tempfile => Object.new)
+      assert_equal 'foo', uf.content_type
+    end
+
+    def test_headers
+      uf = Http::UploadedFile.new(:head => 'foo', :tempfile => Object.new)
+      assert_equal 'foo', uf.headers
+    end
+
+    def test_tempfile
+      uf = Http::UploadedFile.new(:tempfile => 'foo')
+      assert_equal 'foo', uf.tempfile
+    end
+
+    def test_delegates_path_to_tempfile
+      tf = Class.new { def path; 'thunderhorse' end }
+      uf = Http::UploadedFile.new(:tempfile => tf.new)
+      assert_equal 'thunderhorse', uf.path
+    end
+
+    def test_delegates_open_to_tempfile
+      tf = Class.new { def open; 'thunderhorse' end }
+      uf = Http::UploadedFile.new(:tempfile => tf.new)
+      assert_equal 'thunderhorse', uf.open
+    end
+
+    def test_delegates_to_tempfile
+      tf = Class.new { def read; 'thunderhorse' end }
+      uf = Http::UploadedFile.new(:tempfile => tf.new)
+      assert_equal 'thunderhorse', uf.read
+    end
+
+    def test_delegates_to_tempfile_with_params
+      tf = Class.new { def read *args; args end }
+      uf = Http::UploadedFile.new(:tempfile => tf.new)
+      assert_equal %w{ thunder horse }, uf.read(*%w{ thunder horse })
+    end
+
+    def test_delegate_respects_respond_to?
+      tf = Class.new { def read; yield end; private :read }
+      uf = Http::UploadedFile.new(:tempfile => tf.new)
+      assert_raises(NoMethodError) do
+        uf.read
+      end
+    end
+
+    def test_respond_to?
+      tf = Class.new { def read; yield end }
+      uf = Http::UploadedFile.new(:tempfile => tf.new)
+      assert uf.respond_to?(:headers), 'responds to headers'
+      assert uf.respond_to?(:read), 'responds to read'
+    end
+  end
+end
diff --git a/actionpack/test/dispatch/url_generation_test.rb b/actionpack/test/dispatch/url_generation_test.rb
index f83651d583..2b54bc62b0 100644
--- a/actionpack/test/dispatch/url_generation_test.rb
+++ b/actionpack/test/dispatch/url_generation_test.rb
@@ -31,7 +31,7 @@ module TestUrlGeneration
     end
 
     test "the request's SCRIPT_NAME takes precedence over the routes'" do
-      get "/foo", {}, 'SCRIPT_NAME' => "/new"
+      get "/foo", {}, 'SCRIPT_NAME' => "/new", 'action_dispatch.routes' => Routes
       assert_equal "/new/foo", response.body
     end
 
@@ -41,3 +41,4 @@ module TestUrlGeneration
     end
   end
 end
+
diff --git a/actionpack/test/fixtures/alternate_helpers/foo_helper.rb b/actionpack/test/fixtures/alternate_helpers/foo_helper.rb
index a956fce6fa..2528584473 100644
--- a/actionpack/test/fixtures/alternate_helpers/foo_helper.rb
+++ b/actionpack/test/fixtures/alternate_helpers/foo_helper.rb
@@ -1,3 +1,3 @@
 module FooHelper
-  def baz() end
+  redefine_method(:baz) {}
 end
diff --git a/actionpack/test/fixtures/blog_public/.gitignore b/actionpack/test/fixtures/blog_public/.gitignore
new file mode 100644
index 0000000000..312e635ee6
--- /dev/null
+++ b/actionpack/test/fixtures/blog_public/.gitignore
@@ -0,0 +1 @@
+absolute/*
diff --git a/actionpack/test/fixtures/blog_public/blog.html b/actionpack/test/fixtures/blog_public/blog.html
new file mode 100644
index 0000000000..79ad44c010
--- /dev/null
+++ b/actionpack/test/fixtures/blog_public/blog.html
@@ -0,0 +1 @@
+/blog/blog.html
\ No newline at end of file
diff --git a/actionpack/test/fixtures/blog_public/index.html b/actionpack/test/fixtures/blog_public/index.html
new file mode 100644
index 0000000000..2de3825481
--- /dev/null
+++ b/actionpack/test/fixtures/blog_public/index.html
@@ -0,0 +1 @@
+/blog/index.html
\ No newline at end of file
diff --git a/actionpack/test/fixtures/blog_public/subdir/index.html b/actionpack/test/fixtures/blog_public/subdir/index.html
new file mode 100644
index 0000000000..517bded335
--- /dev/null
+++ b/actionpack/test/fixtures/blog_public/subdir/index.html
@@ -0,0 +1 @@
+/blog/subdir/index.html
\ No newline at end of file
diff --git a/actionpack/test/fixtures/companies.yml b/actionpack/test/fixtures/companies.yml
index 707f72abc6..ed2992e0b1 100644
--- a/actionpack/test/fixtures/companies.yml
+++ b/actionpack/test/fixtures/companies.yml
@@ -17,7 +17,7 @@ Google:
   id: 4
   name: Google
   rating: 4
-  
+
 Ionist:
   id: 5
   name: Ioni.st
diff --git a/actionpack/test/fixtures/company.rb b/actionpack/test/fixtures/company.rb
index cbbd0edb14..cd39ea7898 100644
--- a/actionpack/test/fixtures/company.rb
+++ b/actionpack/test/fixtures/company.rb
@@ -6,5 +6,5 @@ class Company < ActiveRecord::Base
   validates_presence_of :name
   def validate
     errors.add('rating', 'rating should not be 2') if rating == 2
-  end  
+  end
 end
\ No newline at end of file
diff --git a/actionpack/test/fixtures/custom_pattern/another.html.erb b/actionpack/test/fixtures/custom_pattern/another.html.erb
new file mode 100644
index 0000000000..6d7f3bafbb
--- /dev/null
+++ b/actionpack/test/fixtures/custom_pattern/another.html.erb
@@ -0,0 +1 @@
+Hello custom patterns!
\ No newline at end of file
diff --git a/actionpack/test/fixtures/custom_pattern/html/another.erb b/actionpack/test/fixtures/custom_pattern/html/another.erb
new file mode 100644
index 0000000000..dbd7e96ab6
--- /dev/null
+++ b/actionpack/test/fixtures/custom_pattern/html/another.erb
@@ -0,0 +1 @@
+Another template!
\ No newline at end of file
diff --git a/actionpack/test/fixtures/custom_pattern/html/path.erb b/actionpack/test/fixtures/custom_pattern/html/path.erb
new file mode 100644
index 0000000000..6d7f3bafbb
--- /dev/null
+++ b/actionpack/test/fixtures/custom_pattern/html/path.erb
@@ -0,0 +1 @@
+Hello custom patterns!
\ No newline at end of file
diff --git a/actionpack/test/fixtures/db_definitions/sqlite.sql b/actionpack/test/fixtures/db_definitions/sqlite.sql
index 8e1947d14a..99df4b3e61 100644
--- a/actionpack/test/fixtures/db_definitions/sqlite.sql
+++ b/actionpack/test/fixtures/db_definitions/sqlite.sql
@@ -5,20 +5,20 @@ CREATE TABLE 'companies' (
 );
 
 CREATE TABLE 'replies' (
-  'id' INTEGER PRIMARY KEY NOT NULL, 
-  'content' text, 
-  'created_at' datetime, 
-  'updated_at' datetime, 
+  'id' INTEGER PRIMARY KEY NOT NULL,
+  'content' text,
+  'created_at' datetime,
+  'updated_at' datetime,
   'topic_id' integer,
   'developer_id' integer
 );
 
 CREATE TABLE 'topics' (
-  'id' INTEGER PRIMARY KEY NOT NULL, 
-  'title' varchar(255), 
-  'subtitle' varchar(255), 
-  'content' text, 
-  'created_at' datetime, 
+  'id' INTEGER PRIMARY KEY NOT NULL,
+  'title' varchar(255),
+  'subtitle' varchar(255),
+  'content' text,
+  'created_at' datetime,
   'updated_at' datetime
 );
 
@@ -43,7 +43,7 @@ CREATE TABLE 'developers_projects' (
 );
 
 CREATE TABLE 'mascots' (
-  'id' INTEGER PRIMARY KEY NOT NULL, 
+  'id' INTEGER PRIMARY KEY NOT NULL,
   'company_id' INTEGER NOT NULL,
   'name' TEXT DEFAULT NULL
 );
\ No newline at end of file
diff --git a/actionpack/test/fixtures/filter_test/implicit_actions/edit.html.erb b/actionpack/test/fixtures/filter_test/implicit_actions/edit.html.erb
new file mode 100644
index 0000000000..8491ab9f80
--- /dev/null
+++ b/actionpack/test/fixtures/filter_test/implicit_actions/edit.html.erb
@@ -0,0 +1 @@
+edit
\ No newline at end of file
diff --git a/actionpack/test/fixtures/filter_test/implicit_actions/show.html.erb b/actionpack/test/fixtures/filter_test/implicit_actions/show.html.erb
new file mode 100644
index 0000000000..0a89cecf05
--- /dev/null
+++ b/actionpack/test/fixtures/filter_test/implicit_actions/show.html.erb
@@ -0,0 +1 @@
+show
\ No newline at end of file
diff --git a/actionpack/test/fixtures/helpers/helpery_test_helper.rb b/actionpack/test/fixtures/helpers/helpery_test_helper.rb
new file mode 100644
index 0000000000..a4f2951efa
--- /dev/null
+++ b/actionpack/test/fixtures/helpers/helpery_test_helper.rb
@@ -0,0 +1,5 @@
+module HelperyTestHelper
+  def helpery_test
+    "Default"
+  end
+end
diff --git a/actionpack/test/fixtures/helpers/just_me_helper.rb b/actionpack/test/fixtures/helpers/just_me_helper.rb
new file mode 100644
index 0000000000..b140a7b9b4
--- /dev/null
+++ b/actionpack/test/fixtures/helpers/just_me_helper.rb
@@ -0,0 +1,3 @@
+module JustMeHelper
+  def me() "mine!" end
+end
\ No newline at end of file
diff --git a/actionpack/test/fixtures/helpers/me_too_helper.rb b/actionpack/test/fixtures/helpers/me_too_helper.rb
new file mode 100644
index 0000000000..ce56042143
--- /dev/null
+++ b/actionpack/test/fixtures/helpers/me_too_helper.rb
@@ -0,0 +1,3 @@
+module MeTooHelper
+  def me() "me too!" end
+end
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/alt/hello.erb b/actionpack/test/fixtures/layout_tests/alt/hello.erb
new file mode 100644
index 0000000000..1055c36659
--- /dev/null
+++ b/actionpack/test/fixtures/layout_tests/alt/hello.erb
@@ -0,0 +1 @@
+alt/hello.erb
diff --git a/actionpack/test/fixtures/layout_tests/alt/hello.rhtml b/actionpack/test/fixtures/layout_tests/alt/hello.rhtml
deleted file mode 100644
index fcda6cf97a..0000000000
--- a/actionpack/test/fixtures/layout_tests/alt/hello.rhtml
+++ /dev/null
@@ -1 +0,0 @@
-alt/hello.rhtml
diff --git a/actionpack/test/fixtures/layout_tests/alt/layouts/alt.rhtml b/actionpack/test/fixtures/layout_tests/alt/layouts/alt.erb
index e69de29bb2..e69de29bb2 100644
--- a/actionpack/test/fixtures/layout_tests/alt/layouts/alt.rhtml
+++ b/actionpack/test/fixtures/layout_tests/alt/layouts/alt.erb
diff --git a/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.erb b/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.erb
new file mode 100644
index 0000000000..121bc079a1
--- /dev/null
+++ b/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.erb
@@ -0,0 +1 @@
+controller_name_space/nested.erb <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.rhtml b/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.rhtml
deleted file mode 100644
index 5f86a7de4d..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.rhtml
+++ /dev/null
@@ -1 +0,0 @@
-controller_name_space/nested.rhtml <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/item.erb b/actionpack/test/fixtures/layout_tests/layouts/item.erb
new file mode 100644
index 0000000000..60f04d77d5
--- /dev/null
+++ b/actionpack/test/fixtures/layout_tests/layouts/item.erb
@@ -0,0 +1 @@
+item.erb <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/item.rhtml b/actionpack/test/fixtures/layout_tests/layouts/item.rhtml
deleted file mode 100644
index 1bc7cbda06..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/item.rhtml
+++ /dev/null
@@ -1 +0,0 @@
-item.rhtml <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/layout_test.erb b/actionpack/test/fixtures/layout_tests/layouts/layout_test.erb
new file mode 100644
index 0000000000..b74ac0840d
--- /dev/null
+++ b/actionpack/test/fixtures/layout_tests/layouts/layout_test.erb
@@ -0,0 +1 @@
+layout_test.erb <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/layout_test.rhtml b/actionpack/test/fixtures/layout_tests/layouts/layout_test.rhtml
deleted file mode 100644
index c0f2642b40..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/layout_test.rhtml
+++ /dev/null
@@ -1 +0,0 @@
-layout_test.rhtml <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/views/goodbye.erb b/actionpack/test/fixtures/layout_tests/views/goodbye.erb
new file mode 100644
index 0000000000..4ee911188e
--- /dev/null
+++ b/actionpack/test/fixtures/layout_tests/views/goodbye.erb
@@ -0,0 +1 @@
+hello.erb
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/views/goodbye.rhtml b/actionpack/test/fixtures/layout_tests/views/goodbye.rhtml
deleted file mode 100644
index bbccf0913e..0000000000
--- a/actionpack/test/fixtures/layout_tests/views/goodbye.rhtml
+++ /dev/null
@@ -1 +0,0 @@
-hello.rhtml
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/views/hello.erb b/actionpack/test/fixtures/layout_tests/views/hello.erb
new file mode 100644
index 0000000000..4ee911188e
--- /dev/null
+++ b/actionpack/test/fixtures/layout_tests/views/hello.erb
@@ -0,0 +1 @@
+hello.erb
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/views/hello.rhtml b/actionpack/test/fixtures/layout_tests/views/hello.rhtml
deleted file mode 100644
index bbccf0913e..0000000000
--- a/actionpack/test/fixtures/layout_tests/views/hello.rhtml
+++ /dev/null
@@ -1 +0,0 @@
-hello.rhtml
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layouts/_customers.erb b/actionpack/test/fixtures/layouts/_customers.erb
new file mode 100644
index 0000000000..ae63f13cd3
--- /dev/null
+++ b/actionpack/test/fixtures/layouts/_customers.erb
@@ -0,0 +1 @@
+<title><%= yield Struct.new(:name).new("David") %></title>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layouts/_partial_and_yield.erb b/actionpack/test/fixtures/layouts/_partial_and_yield.erb
new file mode 100644
index 0000000000..74cc428ffa
--- /dev/null
+++ b/actionpack/test/fixtures/layouts/_partial_and_yield.erb
@@ -0,0 +1,2 @@
+<%= render :partial => 'test/partial' %>
+<%= yield %>
diff --git a/actionpack/test/fixtures/layouts/_yield_only.erb b/actionpack/test/fixtures/layouts/_yield_only.erb
new file mode 100644
index 0000000000..37f0bddbd7
--- /dev/null
+++ b/actionpack/test/fixtures/layouts/_yield_only.erb
@@ -0,0 +1 @@
+<%= yield %>
diff --git a/actionpack/test/fixtures/layouts/_yield_with_params.erb b/actionpack/test/fixtures/layouts/_yield_with_params.erb
new file mode 100644
index 0000000000..68e6557fb8
--- /dev/null
+++ b/actionpack/test/fixtures/layouts/_yield_with_params.erb
@@ -0,0 +1 @@
+<%= yield 'Yield!' %>
diff --git a/actionpack/test/fixtures/layouts/yield_with_render_partial_inside.erb b/actionpack/test/fixtures/layouts/yield_with_render_partial_inside.erb
new file mode 100644
index 0000000000..74cc428ffa
--- /dev/null
+++ b/actionpack/test/fixtures/layouts/yield_with_render_partial_inside.erb
@@ -0,0 +1,2 @@
+<%= render :partial => 'test/partial' %>
+<%= yield %>
diff --git a/actionpack/test/fixtures/old_content_type/render_default_for_rxml.rxml b/actionpack/test/fixtures/old_content_type/render_default_for_builder.builder
index 598d62e2fc..598d62e2fc 100644
--- a/actionpack/test/fixtures/old_content_type/render_default_for_rxml.rxml
+++ b/actionpack/test/fixtures/old_content_type/render_default_for_builder.builder
diff --git a/actionpack/test/fixtures/old_content_type/render_default_for_rhtml.rhtml b/actionpack/test/fixtures/old_content_type/render_default_for_erb.erb
index c7926d48bb..c7926d48bb 100644
--- a/actionpack/test/fixtures/old_content_type/render_default_for_rhtml.rhtml
+++ b/actionpack/test/fixtures/old_content_type/render_default_for_erb.erb
diff --git a/actionpack/test/fixtures/replies.yml b/actionpack/test/fixtures/replies.yml
index 66020b706a..2a3454b8bf 100644
--- a/actionpack/test/fixtures/replies.yml
+++ b/actionpack/test/fixtures/replies.yml
@@ -5,7 +5,7 @@ witty_retort:
   content: Birdman is better!
   created_at: <%= 6.hours.ago.to_s(:db) %>
   updated_at: nil
-  
+
 another:
   id: 2
   topic_id: 2
diff --git a/actionpack/test/fixtures/star_star_mime/index.js.erb b/actionpack/test/fixtures/star_star_mime/index.js.erb
new file mode 100644
index 0000000000..4da4181f56
--- /dev/null
+++ b/actionpack/test/fixtures/star_star_mime/index.js.erb
@@ -0,0 +1 @@
+function addition(a,b){ return a+b; }
diff --git a/actionpack/test/fixtures/test/_layout_with_partial_and_yield.html.erb b/actionpack/test/fixtures/test/_layout_with_partial_and_yield.html.erb
new file mode 100644
index 0000000000..5db0822f07
--- /dev/null
+++ b/actionpack/test/fixtures/test/_layout_with_partial_and_yield.html.erb
@@ -0,0 +1,4 @@
+Before
+<%= render :partial => "test/partial.html.erb" %>
+<%= yield %>
+After
diff --git a/actionpack/test/fixtures/test/_object_inspector.erb b/actionpack/test/fixtures/test/_object_inspector.erb
new file mode 100644
index 0000000000..53af593821
--- /dev/null
+++ b/actionpack/test/fixtures/test/_object_inspector.erb
@@ -0,0 +1 @@
+<%= object_inspector.inspect -%>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/test/_partial_with_layout.erb b/actionpack/test/fixtures/test/_partial_with_layout.erb
new file mode 100644
index 0000000000..2a50c834fe
--- /dev/null
+++ b/actionpack/test/fixtures/test/_partial_with_layout.erb
@@ -0,0 +1,2 @@
+<%= render :partial => 'test/partial', :layout => 'test/layout_for_partial', :locals => { :name => 'Bar!' } %>
+partial with layout
diff --git a/actionpack/test/fixtures/test/_partial_with_layout_block_content.erb b/actionpack/test/fixtures/test/_partial_with_layout_block_content.erb
new file mode 100644
index 0000000000..65dafd93a8
--- /dev/null
+++ b/actionpack/test/fixtures/test/_partial_with_layout_block_content.erb
@@ -0,0 +1,4 @@
+<%= render :layout => 'test/layout_for_partial', :locals => { :name => 'Bar!' } do %>
+  Content from inside layout!
+<% end %>
+partial with layout
diff --git a/actionpack/test/fixtures/test/_partial_with_layout_block_partial.erb b/actionpack/test/fixtures/test/_partial_with_layout_block_partial.erb
new file mode 100644
index 0000000000..444197a7d0
--- /dev/null
+++ b/actionpack/test/fixtures/test/_partial_with_layout_block_partial.erb
@@ -0,0 +1,4 @@
+<%= render :layout => 'test/layout_for_partial', :locals => { :name => 'Bar!' } do %>
+  <%= render 'test/partial' %>
+<% end %>
+partial with layout
diff --git a/actionpack/test/fixtures/test/_partial_with_partial.erb b/actionpack/test/fixtures/test/_partial_with_partial.erb
new file mode 100644
index 0000000000..ee0d5037b6
--- /dev/null
+++ b/actionpack/test/fixtures/test/_partial_with_partial.erb
@@ -0,0 +1,2 @@
+<%= render 'test/partial' %>
+partial with partial
diff --git a/actionpack/test/fixtures/test/hello_world_from_rxml.builder b/actionpack/test/fixtures/test/hello_world_from_rxml.builder
index 8455b11edc..619a97ba96 100644
--- a/actionpack/test/fixtures/test/hello_world_from_rxml.builder
+++ b/actionpack/test/fixtures/test/hello_world_from_rxml.builder
@@ -1,4 +1,3 @@
 xml.html do
   xml.p "Hello"
 end
-"String return value"
diff --git a/actionpack/test/fixtures/test/hello_xml_world.builder b/actionpack/test/fixtures/test/hello_xml_world.builder
index 02b14fe87c..e7081b89fe 100644
--- a/actionpack/test/fixtures/test/hello_xml_world.builder
+++ b/actionpack/test/fixtures/test/hello_xml_world.builder
@@ -2,7 +2,7 @@ xml.html do
   xml.head do
     xml.title "Hello World"
   end
-  
+
   xml.body do
     xml.p "abes"
     xml.p "monks"
diff --git a/actionpack/test/fixtures/test/layout_render_object.erb b/actionpack/test/fixtures/test/layout_render_object.erb
new file mode 100644
index 0000000000..acc4453c08
--- /dev/null
+++ b/actionpack/test/fixtures/test/layout_render_object.erb
@@ -0,0 +1 @@
+<%= render :layout => "layouts/customers" do |customer| %><%= customer.name %><% end %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/test/proper_block_detection.erb b/actionpack/test/fixtures/test/proper_block_detection.erb
index 23564dbcee..b55efbb25d 100644
--- a/actionpack/test/fixtures/test/proper_block_detection.erb
+++ b/actionpack/test/fixtures/test/proper_block_detection.erb
@@ -1 +1 @@
-<%= @todo %>
+<%= @todo %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/test/scoped_translation.erb b/actionpack/test/fixtures/test/scoped_translation.erb
deleted file mode 100644
index 3be63ab3cc..0000000000
--- a/actionpack/test/fixtures/test/scoped_translation.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= t('.foo.bar').join %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/test/translation.erb b/actionpack/test/fixtures/test/translation.erb
deleted file mode 100644
index 81a837d1ff..0000000000
--- a/actionpack/test/fixtures/test/translation.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= t('.helper') %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/topics.yml b/actionpack/test/fixtures/topics.yml
index 61ea02d76f..7fdd49d54e 100644
--- a/actionpack/test/fixtures/topics.yml
+++ b/actionpack/test/fixtures/topics.yml
@@ -5,7 +5,7 @@ futurama:
   content: I like futurama
   created_at: <%= 1.day.ago.to_s(:db) %>
   updated_at:
-  
+
 harvey_birdman:
   id: 2
   title: Harvey Birdman is the king of all men
diff --git a/actionpack/test/fixtures/translations/templates/array.erb b/actionpack/test/fixtures/translations/templates/array.erb
new file mode 100644
index 0000000000..d86045a172
--- /dev/null
+++ b/actionpack/test/fixtures/translations/templates/array.erb
@@ -0,0 +1 @@
+<%= t('.foo.bar') %>
diff --git a/actionpack/test/fixtures/translations/templates/found.erb b/actionpack/test/fixtures/translations/templates/found.erb
new file mode 100644
index 0000000000..080c9c0aee
--- /dev/null
+++ b/actionpack/test/fixtures/translations/templates/found.erb
@@ -0,0 +1 @@
+<%= t('.foo') %>
diff --git a/actionpack/test/fixtures/translations/templates/missing.erb b/actionpack/test/fixtures/translations/templates/missing.erb
new file mode 100644
index 0000000000..0f3f17f8ef
--- /dev/null
+++ b/actionpack/test/fixtures/translations/templates/missing.erb
@@ -0,0 +1 @@
+<%= t('.missing') %>
diff --git a/actionpack/test/lib/controller/fake_models.rb b/actionpack/test/lib/controller/fake_models.rb
index bf3e175f1f..67baf369e2 100644
--- a/actionpack/test/lib/controller/fake_models.rb
+++ b/actionpack/test/lib/controller/fake_models.rb
@@ -55,6 +55,11 @@ class Post < Struct.new(:title, :author_name, :body, :secret, :written_on, :cost
 
   alias_method :secret?, :secret
 
+  def initialize(*args)
+    super
+    @persisted = false
+  end
+
   def persisted=(boolean)
     @persisted = boolean
   end
@@ -83,7 +88,7 @@ class Comment
   def to_key; id ? [id] : nil end
   def save; @id = 1; @post_id = 1 end
   def persisted?; @id.present? end
-  def to_param; @id; end
+  def to_param; @id.to_s; end
   def name
     @id.nil? ? "new #{self.class.name.downcase}" : "#{self.class.name.downcase} ##{@id}"
   end
@@ -91,6 +96,7 @@ class Comment
   attr_accessor :relevances
   def relevances_attributes=(attributes); end
 
+  attr_accessor :body
 end
 
 class Tag
@@ -129,6 +135,20 @@ class CommentRelevance
   end
 end
 
+class Sheep
+  extend ActiveModel::Naming
+  include ActiveModel::Conversion
+
+  attr_reader :id
+  def to_key; id ? [id] : nil end
+  def save; @id = 1 end
+  def new_record?; @id.nil? end
+  def name
+    @id.nil? ? 'new sheep' : "sheep ##{@id}"
+  end
+end
+
+
 class TagRelevance
   extend ActiveModel::Naming
   include ActiveModel::Conversion
@@ -149,3 +169,34 @@ class Author < Comment
   attr_accessor :post
   def post_attributes=(attributes); end
 end
+
+module Blog
+  def self._railtie
+    self
+  end
+
+  class Post < Struct.new(:title, :id)
+    extend ActiveModel::Naming
+    include ActiveModel::Conversion
+
+    def persisted?
+      id.present?
+    end
+  end
+end
+
+class ArelLike
+  def to_ary
+    true
+  end
+  def each
+    a = Array.new(2) { |id| Comment.new(id + 1) }
+    a.each { |i| yield i }
+  end
+end
+
+class RenderJsonTestException < Exception
+  def to_json(options = nil)
+    return { :error => self.class.name, :message => self.to_s }.to_json
+  end
+end
diff --git a/actionpack/test/template/active_model_helper_test.rb b/actionpack/test/template/active_model_helper_test.rb
index 6ab244d178..8530a72a82 100644
--- a/actionpack/test/template/active_model_helper_test.rb
+++ b/actionpack/test/template/active_model_helper_test.rb
@@ -59,12 +59,4 @@ class ActiveModelHelperTest < ActionView::TestCase
   ensure
     ActionView::Base.field_error_proc = old_proc if old_proc
   end
-
-  def test_deprecations
-    %w(input form error_messages_for error_message_on).each do |method|
-      assert_deprecated do
-        send(method, "post")
-      end
-    end
-  end
 end
diff --git a/actionpack/test/template/asset_tag_helper_test.rb b/actionpack/test/template/asset_tag_helper_test.rb
index 6d5e4893c4..1bf748af14 100644
--- a/actionpack/test/template/asset_tag_helper_test.rb
+++ b/actionpack/test/template/asset_tag_helper_test.rb
@@ -54,6 +54,9 @@ class AssetTagHelperTest < ActionView::TestCase
   def teardown
     config.perform_caching = false
     ENV.delete('RAILS_ASSET_ID')
+
+    JavascriptIncludeTag.expansions.clear
+    StylesheetIncludeTag.expansions.clear
   end
 
   AutoDiscoveryToTag = {
@@ -89,9 +92,10 @@ class AssetTagHelperTest < ActionView::TestCase
     %(javascript_include_tag("bank", :lang => "vbscript")) => %(<script lang="vbscript" src="/javascripts/bank.js" type="text/javascript"></script>),
     %(javascript_include_tag("common.javascript", "/elsewhere/cools")) => %(<script src="/javascripts/common.javascript" type="text/javascript"></script>\n<script src="/elsewhere/cools.js" type="text/javascript"></script>),
     %(javascript_include_tag(:defaults)) => %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
-    %(javascript_include_tag(:all)) => %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>),
-    %(javascript_include_tag(:all, :recursive => true)) => %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/subdir/subdir.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>),
+    %(javascript_include_tag(:all)) => %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
+    %(javascript_include_tag(:all, :recursive => true)) => %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/subdir/subdir.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
     %(javascript_include_tag(:defaults, "bank")) => %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
+    %(javascript_include_tag(:defaults, "application")) => %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
     %(javascript_include_tag("bank", :defaults)) => %(<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
 
     %(javascript_include_tag("http://example.com/all")) => %(<script src="http://example.com/all" type="text/javascript"></script>),
@@ -262,19 +266,66 @@ class AssetTagHelperTest < ActionView::TestCase
     assert_dom_equal  %(<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>), javascript_include_tag('controls', :robbery, 'effects')
   end
 
+  def test_custom_javascript_expansions_return_unique_set
+    ENV["RAILS_ASSET_ID"] = ""
+    ActionView::Helpers::AssetTagHelper::register_javascript_expansion :defaults => %w(prototype effects dragdrop controls rails application)
+    assert_dom_equal  %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>), javascript_include_tag(:defaults)
+  end
+
   def test_custom_javascript_expansions_and_defaults_puts_application_js_at_the_end
     ENV["RAILS_ASSET_ID"] = ""
     ActionView::Helpers::AssetTagHelper::register_javascript_expansion :robbery => ["bank", "robber"]
-    assert_dom_equal  %(<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>), javascript_include_tag('controls',:defaults, :robbery, 'effects')
+    assert_dom_equal  %(<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>), javascript_include_tag('controls',:defaults, :robbery, 'effects')
+  end
+
+  def test_javascript_include_tag_should_not_output_the_same_asset_twice
+    ENV["RAILS_ASSET_ID"] = ""
+    assert_dom_equal  %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>), javascript_include_tag('prototype', 'effects', :defaults)
+  end
+
+  def test_javascript_include_tag_should_not_output_the_same_expansion_twice
+    ENV["RAILS_ASSET_ID"] = ""
+    assert_dom_equal  %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>), javascript_include_tag(:defaults, :defaults)
+  end
+
+  def test_single_javascript_asset_keys_should_take_precedence_over_expansions
+    ENV["RAILS_ASSET_ID"] = ""
+    assert_dom_equal  %(<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>), javascript_include_tag('controls', :defaults, 'effects')
+    assert_dom_equal  %(<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/rails.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>), javascript_include_tag('controls', 'effects', :defaults)
+  end
+
+  def test_registering_javascript_expansions_merges_with_existing_expansions
+    ENV["RAILS_ASSET_ID"] = ""
+    ActionView::Helpers::AssetTagHelper::register_javascript_expansion :can_merge => ['bank']
+    ActionView::Helpers::AssetTagHelper::register_javascript_expansion :can_merge => ['robber']
+    ActionView::Helpers::AssetTagHelper::register_javascript_expansion :can_merge => ['bank']
+    assert_dom_equal  %(<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>), javascript_include_tag(:can_merge)
   end
 
   def test_custom_javascript_expansions_with_undefined_symbol
+    assert_raise(ArgumentError) { javascript_include_tag('first', :unknown, 'last') }
+  end
+
+  def test_custom_javascript_expansions_with_nil_value
     ActionView::Helpers::AssetTagHelper::register_javascript_expansion :monkey => nil
-    assert_raise(ArgumentError) { javascript_include_tag('first', :monkey, 'last') }
+    assert_dom_equal  %(<script src="/javascripts/first.js" type="text/javascript"></script>\n<script src="/javascripts/last.js" type="text/javascript"></script>), javascript_include_tag('first', :monkey, 'last')
+  end
+
+  def test_custom_javascript_expansions_with_empty_array_value
+    ActionView::Helpers::AssetTagHelper::register_javascript_expansion :monkey => []
+    assert_dom_equal  %(<script src="/javascripts/first.js" type="text/javascript"></script>\n<script src="/javascripts/last.js" type="text/javascript"></script>), javascript_include_tag('first', :monkey, 'last')
+  end
+
+  def test_custom_javascript_and_stylesheet_expansion_with_same_name
+    ENV["RAILS_ASSET_ID"] = ""
+    ActionView::Helpers::AssetTagHelper::register_javascript_expansion :robbery => ["bank", "robber"]
+    ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :robbery => ["money", "security"]
+    assert_dom_equal  %(<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>), javascript_include_tag('controls', :robbery, 'effects')
+    assert_dom_equal  %(<link href="/stylesheets/style.css" rel="stylesheet" type="text/css" media="screen" />\n<link href="/stylesheets/money.css" rel="stylesheet" type="text/css" media="screen" />\n<link href="/stylesheets/security.css" rel="stylesheet" type="text/css" media="screen" />\n<link href="/stylesheets/print.css" rel="stylesheet" type="text/css" media="screen" />), stylesheet_link_tag('style', :robbery, 'print')
   end
 
   def test_reset_javascript_expansions
-    ActionView::Helpers::AssetTagHelper.javascript_expansions.clear
+    JavascriptIncludeTag.expansions.clear
     assert_raise(ArgumentError) { javascript_include_tag(:defaults) }
   end
 
@@ -306,7 +357,6 @@ class AssetTagHelperTest < ActionView::TestCase
     ENV["RAILS_ASSET_ID"] = ""
     assert stylesheet_link_tag('dir/file').html_safe?
     assert stylesheet_link_tag('dir/other/file', 'dir/file2').html_safe?
-    assert stylesheet_tag('dir/file', {}).html_safe?
   end
 
   def test_custom_stylesheet_expansions
@@ -315,9 +365,49 @@ class AssetTagHelperTest < ActionView::TestCase
     assert_dom_equal  %(<link href="/stylesheets/version.1.0.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/bank.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/robber.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/subdir/subdir.css" media="screen" rel="stylesheet" type="text/css" />), stylesheet_link_tag('version.1.0', :robbery, 'subdir/subdir')
   end
 
-  def test_custom_stylesheet_expansions_with_undefined_symbol
+  def test_custom_stylesheet_expansions_return_unique_set
+    ENV["RAILS_ASSET_ID"] = ""
+    ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :cities => %w(wellington amsterdam london)
+    assert_dom_equal  %(<link href="/stylesheets/wellington.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/amsterdam.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/london.css" media="screen" rel="stylesheet" type="text/css" />), stylesheet_link_tag(:cities)
+  end
+
+  def test_stylesheet_link_tag_should_not_output_the_same_asset_twice
+    ENV["RAILS_ASSET_ID"] = ""
+    assert_dom_equal  %(<link href="/stylesheets/wellington.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/amsterdam.css" media="screen" rel="stylesheet" type="text/css" />), stylesheet_link_tag('wellington', 'wellington', 'amsterdam')
+  end
+
+  def test_stylesheet_link_tag_should_not_output_the_same_expansion_twice
+    ENV["RAILS_ASSET_ID"] = ""
+    ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :cities => %w(wellington amsterdam london)
+    assert_dom_equal  %(<link href="/stylesheets/wellington.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/amsterdam.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/london.css" media="screen" rel="stylesheet" type="text/css" />), stylesheet_link_tag(:cities, :cities)
+  end
+
+  def test_single_stylesheet_asset_keys_should_take_precedence_over_expansions
+    ENV["RAILS_ASSET_ID"] = ""
+    ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :cities => %w(wellington amsterdam london)
+    assert_dom_equal  %(<link href="/stylesheets/london.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/wellington.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/amsterdam.css" media="screen" rel="stylesheet" type="text/css" />), stylesheet_link_tag('london', :cities)
+  end
+
+  def test_custom_stylesheet_expansions_with_unknown_symbol
+    assert_raise(ArgumentError) { stylesheet_link_tag('first', :unknown, 'last') }
+  end
+
+  def test_custom_stylesheet_expansions_with_nil_value
     ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :monkey => nil
-    assert_raise(ArgumentError) { stylesheet_link_tag('first', :monkey, 'last') }
+    assert_dom_equal  %(<link href="/stylesheets/first.css" rel="stylesheet" type="text/css" media="screen" />\n<link href="/stylesheets/last.css" rel="stylesheet" type="text/css" media="screen" />), stylesheet_link_tag('first', :monkey, 'last')
+  end
+
+  def test_custom_stylesheet_expansions_with_empty_array_value
+    ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :monkey => []
+    assert_dom_equal  %(<link href="/stylesheets/first.css" rel="stylesheet" type="text/css" media="screen" />\n<link href="/stylesheets/last.css" rel="stylesheet" type="text/css" media="screen" />), stylesheet_link_tag('first', :monkey, 'last')
+  end
+
+  def test_registering_stylesheet_expansions_merges_with_existing_expansions
+    ENV["RAILS_ASSET_ID"] = ""
+    ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :can_merge => ['bank']
+    ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :can_merge => ['robber']
+    ActionView::Helpers::AssetTagHelper::register_stylesheet_expansion :can_merge => ['bank']
+    assert_dom_equal  %(<link href="/stylesheets/bank.css" media="screen" rel="stylesheet" type="text/css" />\n<link href="/stylesheets/robber.css" media="screen" rel="stylesheet" type="text/css" />), stylesheet_link_tag(:can_merge)
   end
 
   def test_image_path
@@ -387,6 +477,15 @@ class AssetTagHelperTest < ActionView::TestCase
     assert_equal %(<img alt="Rails" src="#{expected_path}" />), image_tag("rails.png")
   end
 
+  def test_env_asset_path
+    @controller.config.asset_path = "/assets%s"
+    def @controller.env; @_env ||= {} end
+    @controller.env["action_dispatch.asset_path"] = "/omg%s"
+
+    expected_path = "/assets/omg/images/rails.png"
+    assert_equal %(<img alt="Rails" src="#{expected_path}" />), image_tag("rails.png")
+  end
+
   def test_proc_asset_id
     @controller.config.asset_path = Proc.new do |asset_path|
       "/assets.v12345#{asset_path}"
@@ -396,6 +495,20 @@ class AssetTagHelperTest < ActionView::TestCase
     assert_equal %(<img alt="Rails" src="#{expected_path}" />), image_tag("rails.png")
   end
 
+  def test_env_proc_asset_path
+    @controller.config.asset_path = Proc.new do |asset_path|
+      "/assets.v12345#{asset_path}"
+    end
+
+    def @controller.env; @_env ||= {} end
+    @controller.env["action_dispatch.asset_path"] = Proc.new do |asset_path|
+      "/omg#{asset_path}"
+    end
+
+    expected_path = "/assets.v12345/omg/images/rails.png"
+    assert_equal %(<img alt="Rails" src="#{expected_path}" />), image_tag("rails.png")
+  end
+
   def test_image_tag_interpreting_email_cid_correctly
     # An inline image has no need for an alt tag to be automatically generated from the cid:
     assert_equal '<img src="cid:thi%25%25sis@acontentid" />', image_tag("cid:thi%25%25sis@acontentid")
@@ -605,7 +718,7 @@ class AssetTagHelperTest < ActionView::TestCase
     assert File.exist?(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'combined.js'))
 
     assert_equal(
-      %(// prototype js\n\n// effects js\n\n// dragdrop js\n\n// controls js\n\n// application js\n\n// bank js\n\n// robber js\n\n// subdir js\n\n\n// version.1.0 js),
+      %(// prototype js\n\n// effects js\n\n// dragdrop js\n\n// controls js\n\n// bank js\n\n// robber js\n\n// subdir js\n\n\n// version.1.0 js\n\n// application js),
       IO.read(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'combined.js'))
     )
 
@@ -626,7 +739,7 @@ class AssetTagHelperTest < ActionView::TestCase
     assert File.exist?(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'combined.js'))
 
     assert_equal(
-      %(// prototype js\n\n// effects js\n\n// dragdrop js\n\n// controls js\n\n// application js\n\n// bank js\n\n// robber js\n\n// version.1.0 js),
+      %(// prototype js\n\n// effects js\n\n// dragdrop js\n\n// controls js\n\n// bank js\n\n// robber js\n\n// version.1.0 js\n\n// application js),
       IO.read(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'combined.js'))
     )
 
@@ -658,29 +771,49 @@ class AssetTagHelperTest < ActionView::TestCase
     FileUtils.rm_f(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'money.js'))
   end
 
+  def test_caching_javascript_include_tag_with_named_paths_and_relative_url_root_when_caching_off
+    ENV["RAILS_ASSET_ID"] = ""
+    @controller.config.relative_url_root = "/collaboration/hieraki"
+    config.perform_caching = false
+
+    assert_dom_equal(
+      %(<script src="/collaboration/hieraki/javascripts/robber.js" type="text/javascript"></script>),
+      javascript_include_tag('robber', :cache => true)
+    )
+
+    assert !File.exist?(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'all.js'))
+
+    assert_dom_equal(
+      %(<script src="/collaboration/hieraki/javascripts/robber.js" type="text/javascript"></script>),
+      javascript_include_tag('robber', :cache => "money", :recursive => true)
+    )
+
+    assert !File.exist?(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'money.js'))
+  end
+
   def test_caching_javascript_include_tag_when_caching_off
     ENV["RAILS_ASSET_ID"] = ""
     config.perform_caching = false
 
     assert_dom_equal(
-      %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>),
+      %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
       javascript_include_tag(:all, :cache => true)
     )
 
     assert_dom_equal(
-      %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/subdir/subdir.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>),
+      %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/subdir/subdir.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
       javascript_include_tag(:all, :cache => true, :recursive => true)
     )
 
     assert !File.exist?(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'all.js'))
 
     assert_dom_equal(
-      %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>),
+      %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
       javascript_include_tag(:all, :cache => "money")
     )
 
     assert_dom_equal(
-      %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/subdir/subdir.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>),
+      %(<script src="/javascripts/prototype.js" type="text/javascript"></script>\n<script src="/javascripts/effects.js" type="text/javascript"></script>\n<script src="/javascripts/dragdrop.js" type="text/javascript"></script>\n<script src="/javascripts/controls.js" type="text/javascript"></script>\n<script src="/javascripts/bank.js" type="text/javascript"></script>\n<script src="/javascripts/robber.js" type="text/javascript"></script>\n<script src="/javascripts/subdir/subdir.js" type="text/javascript"></script>\n<script src="/javascripts/version.1.0.js" type="text/javascript"></script>\n<script src="/javascripts/application.js" type="text/javascript"></script>),
       javascript_include_tag(:all, :cache => "money", :recursive => true)
     )
 
@@ -704,6 +837,17 @@ class AssetTagHelperTest < ActionView::TestCase
     assert !File.exist?(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'money.js'))
   end
 
+  def test_caching_javascript_include_tag_when_caching_on_and_javascript_file_is_uri
+    ENV["RAILS_ASSET_ID"] = ""
+    config.perform_caching = true
+
+    assert_raise(Errno::ENOENT) {
+      javascript_include_tag('bank', 'robber', 'https://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.js', :cache => true)
+    }
+
+    assert !File.exist?(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'all.js'))
+  end
+
   def test_caching_javascript_include_tag_when_caching_off_and_missing_javascript_file
     ENV["RAILS_ASSET_ID"] = ""
     config.perform_caching = false
@@ -874,6 +1018,30 @@ class AssetTagHelperTest < ActionView::TestCase
     FileUtils.rm_f(File.join(ActionView::Helpers::AssetTagHelper::STYLESHEETS_DIR, 'money.css'))
   end
 
+
+  def test_caching_stylesheet_link_tag_with_named_paths_and_relative_url_root_when_caching_off
+    ENV["RAILS_ASSET_ID"] = ""
+    @controller.config.relative_url_root = "/collaboration/hieraki"
+    config.perform_caching = false
+
+    assert_dom_equal(
+      %(<link href="/collaboration/hieraki/stylesheets/robber.css" media="screen" rel="stylesheet" type="text/css" />),
+      stylesheet_link_tag('robber', :cache => true)
+    )
+
+    assert !File.exist?(File.join(ActionView::Helpers::AssetTagHelper::STYLESHEETS_DIR, 'all.css'))
+
+    assert_dom_equal(
+      %(<link href="/collaboration/hieraki/stylesheets/robber.css" media="screen" rel="stylesheet" type="text/css" />),
+      stylesheet_link_tag('robber', :cache => "money")
+    )
+
+    assert !File.exist?(File.join(ActionView::Helpers::AssetTagHelper::STYLESHEETS_DIR, 'money.css'))
+  end
+
+
+
+
   def test_caching_stylesheet_include_tag_when_caching_off
     ENV["RAILS_ASSET_ID"] = ""
     config.perform_caching = false
@@ -915,7 +1083,7 @@ class AssetTagHelperNonVhostTest < ActionView::TestCase
     @request = Struct.new(:protocol).new("gopher://")
     @controller.request = @request
 
-    ActionView::Helpers::AssetTagHelper.javascript_expansions.clear
+    JavascriptIncludeTag.expansions.clear
   end
 
   def url_for(options)
@@ -952,7 +1120,7 @@ class AssetTagHelperNonVhostTest < ActionView::TestCase
 
   def test_should_wildcard_asset_host_between_zero_and_four
     @controller.config.asset_host = 'http://a%d.example.com'
-    assert_match %r(http://a[0123].example.com/collaboration/hieraki/images/xml.png), image_path('xml.png')
+    assert_match(%r(http://a[0123].example.com/collaboration/hieraki/images/xml.png), image_path('xml.png'))
   end
 
   def test_asset_host_without_protocol_should_use_request_protocol
diff --git a/actionpack/test/template/atom_feed_helper_test.rb b/actionpack/test/template/atom_feed_helper_test.rb
index 869ea22469..36102bbc4f 100644
--- a/actionpack/test/template/atom_feed_helper_test.rb
+++ b/actionpack/test/template/atom_feed_helper_test.rb
@@ -203,7 +203,7 @@ class AtomFeedTest < ActionController::TestCase
   def test_feed_should_use_default_language_if_none_is_given
     with_restful_routing(:scrolls) do
       get :index, :id => "defaults"
-      assert_match %r{xml:lang="en-US"}, @response.body
+      assert_match(%r{xml:lang="en-US"}, @response.body)
     end
   end
 
@@ -226,7 +226,7 @@ class AtomFeedTest < ActionController::TestCase
       get :index, :id=>"provide_builder"
       # because we pass in the non-default builder, the content generated by the
       # helper should go 'nowhere'.  Leaving the response body blank.
-      assert @response.body.blank?
+      assert_blank @response.body
     end
   end
 
@@ -314,7 +314,7 @@ class AtomFeedTest < ActionController::TestCase
   private
     def with_restful_routing(resources)
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           resources(resources)
         end
         yield
diff --git a/actionpack/test/template/capture_helper_test.rb b/actionpack/test/template/capture_helper_test.rb
index f7c42c7f22..03050485fa 100644
--- a/actionpack/test/template/capture_helper_test.rb
+++ b/actionpack/test/template/capture_helper_test.rb
@@ -15,7 +15,6 @@ class CaptureHelperTest < ActionView::TestCase
     end
     assert_nil @av.output_buffer
     assert_equal 'foobar', string
-    assert_kind_of ActionView::NonConcattingString, string
   end
 
   def test_capture_captures_the_value_returned_by_the_block_if_the_temporary_buffer_is_blank
@@ -23,13 +22,22 @@ class CaptureHelperTest < ActionView::TestCase
       a + b
     end
     assert_equal 'foobar', string
-    assert_kind_of ActionView::NonConcattingString, string
   end
 
   def test_capture_returns_nil_if_the_returned_value_is_not_a_string
     assert_nil @av.capture { 1 }
   end
 
+  def test_capture_escapes_html
+    string = @av.capture { '<em>bar</em>' }
+    assert_equal '&lt;em&gt;bar&lt;/em&gt;', string
+  end
+
+  def test_capture_doesnt_escape_twice
+    string = @av.capture { '&lt;em&gt;bar&lt;/em&gt;'.html_safe }
+    assert_equal '&lt;em&gt;bar&lt;/em&gt;', string
+  end
+
   def test_content_for
     assert ! content_for?(:title)
     content_for :title, 'title'
diff --git a/actionpack/test/template/compiled_templates_test.rb b/actionpack/test/template/compiled_templates_test.rb
index 2c719757e4..3f31edd5ce 100644
--- a/actionpack/test/template/compiled_templates_test.rb
+++ b/actionpack/test/template/compiled_templates_test.rb
@@ -8,7 +8,7 @@ class CompiledTemplatesTest < Test::Unit::TestCase
       @compiled_templates.send(:remove_method, m) if m =~ /^_render_template_/
     end
   end
-  
+
   def test_template_gets_recompiled_when_using_different_keys_in_local_assigns
     assert_equal "one", render(:file => "test/render_file_with_locals_and_default.erb")
     assert_equal "two", render(:file => "test/render_file_with_locals_and_default.erb", :locals => { :secret => "two" })
diff --git a/actionpack/test/template/date_helper_i18n_test.rb b/actionpack/test/template/date_helper_i18n_test.rb
index b69a449617..d45215acfd 100644
--- a/actionpack/test/template/date_helper_i18n_test.rb
+++ b/actionpack/test/template/date_helper_i18n_test.rb
@@ -5,7 +5,7 @@ class DateHelperDistanceOfTimeInWordsI18nTests < Test::Unit::TestCase
   attr_reader :request
 
   def setup
-    @from = Time.mktime(2004, 6, 6, 21, 45, 0)
+    @from = Time.utc(2004, 6, 6, 21, 45, 0)
   end
 
   # distance_of_time_in_words
@@ -62,7 +62,7 @@ class DateHelperDistanceOfTimeInWordsI18nTests < Test::Unit::TestCase
       [:'about_x_years',       1]   => 'about 1 year',
       [:'about_x_years',       2]   => 'about 2 years',
       [:'over_x_years',        1]   => 'over 1 year',
-      [:'over_x_years',        2]   => 'over 2 years' 
+      [:'over_x_years',        2]   => 'over 2 years'
 
       }.each do |args, expected|
       key, count = *args
diff --git a/actionpack/test/template/date_helper_test.rb b/actionpack/test/template/date_helper_test.rb
index a1db49d4d0..aca2fef170 100644
--- a/actionpack/test/template/date_helper_test.rb
+++ b/actionpack/test/template/date_helper_test.rb
@@ -99,7 +99,7 @@ class DateHelperTest < ActionView::TestCase
   end
 
   def test_distance_in_words
-    from = Time.mktime(2004, 6, 6, 21, 45, 0)
+    from = Time.utc(2004, 6, 6, 21, 45, 0)
     assert_distance_of_time_in_words(from)
   end
 
@@ -673,7 +673,7 @@ class DateHelperTest < ActionView::TestCase
     expected = %(<input id="date_first_year" name="date[first][year]" type="hidden" value="2003" />\n)
     expected << %(<input id="date_first_month" name="date[first][month]" type="hidden" value="8" />\n)
     expected << %(<input id="date_first_day" name="date[first][day]" type="hidden" value="16" />\n)
-     
+
     assert_dom_equal expected, select_date(Time.mktime(2003, 8, 16), :start_year => 2003, :end_year => 2005, :prefix => "date[first]", :order => [:day])
   end
 
@@ -897,7 +897,7 @@ class DateHelperTest < ActionView::TestCase
 
     assert_dom_equal expected, select_date(Time.mktime(2003, 8, 16), { :date_separator => " / ", :discard_day => true, :start_year => 2003, :end_year => 2005, :prefix => "date[first]"})
   end
-  
+
   def test_select_date_with_separator_discard_month_and_day
     expected =  %(<select id="date_first_year" name="date[first][year]">\n)
     expected << %(<option value="2003" selected="selected">2003</option>\n<option value="2004">2004</option>\n<option value="2005">2005</option>\n)
@@ -978,7 +978,7 @@ class DateHelperTest < ActionView::TestCase
     expected << %(<option value="1">1</option>\n<option value="2">2</option>\n<option value="3">3</option>\n<option value="4">4</option>\n<option value="5">5</option>\n<option value="6">6</option>\n<option value="7">7</option>\n<option value="8">8</option>\n<option value="9">9</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n<option value="24">24</option>\n<option value="25">25</option>\n<option value="26">26</option>\n<option value="27">27</option>\n<option value="28">28</option>\n<option value="29">29</option>\n<option value="30">30</option>\n<option value="31">31</option>\n)
     expected << "</select>\n"
 
-    expected << " &mdash; " 
+    expected << " &mdash; "
 
     expected << %(<select id="date_first_hour" name="date[first][hour]">\n)
     expected << %(<option value="00">00</option>\n<option value="01">01</option>\n<option value="02">02</option>\n<option value="03">03</option>\n<option value="04">04</option>\n<option value="05">05</option>\n<option value="06">06</option>\n<option value="07">07</option>\n<option value="08">08</option>\n<option value="09">09</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n)
@@ -1007,7 +1007,7 @@ class DateHelperTest < ActionView::TestCase
     expected << %(<option value="1">1</option>\n<option value="2">2</option>\n<option value="3">3</option>\n<option value="4">4</option>\n<option value="5">5</option>\n<option value="6">6</option>\n<option value="7">7</option>\n<option value="8">8</option>\n<option value="9">9</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16" selected="selected">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n<option value="24">24</option>\n<option value="25">25</option>\n<option value="26">26</option>\n<option value="27">27</option>\n<option value="28">28</option>\n<option value="29">29</option>\n<option value="30">30</option>\n<option value="31">31</option>\n)
     expected << "</select>\n"
 
-    expected << " &mdash; " 
+    expected << " &mdash; "
 
     expected << %(<select id="date_first_hour" name="date[first][hour]" class="selector">\n)
     expected << %(<option value="00">00</option>\n<option value="01">01</option>\n<option value="02">02</option>\n<option value="03">03</option>\n<option value="04">04</option>\n<option value="05">05</option>\n<option value="06">06</option>\n<option value="07">07</option>\n<option value="08" selected="selected">08</option>\n<option value="09">09</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n)
@@ -1121,7 +1121,7 @@ class DateHelperTest < ActionView::TestCase
     expected = %(<input name="date[year]" id="date_year" value="2003" type="hidden" />\n)
     expected << %(<input name="date[month]" id="date_month" value="8" type="hidden" />\n)
     expected << %(<input name="date[day]" id="date_day" value="16" type="hidden" />\n)
-    
+
     expected << %(<select id="date_hour" name="date[hour]">\n)
     expected << %(<option value="00">00</option>\n<option value="01">01</option>\n<option value="02">02</option>\n<option value="03">03</option>\n<option value="04">04</option>\n<option value="05">05</option>\n<option value="06">06</option>\n<option value="07">07</option>\n<option value="08" selected="selected">08</option>\n<option value="09">09</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n)
     expected << "</select>\n"
@@ -1158,7 +1158,7 @@ class DateHelperTest < ActionView::TestCase
     expected = %(<input name="date[year]" id="date_year" value="2003" type="hidden" />\n)
     expected << %(<input name="date[month]" id="date_month" value="8" type="hidden" />\n)
     expected << %(<input name="date[day]" id="date_day" value="16" type="hidden" />\n)
-    
+
     expected << %(<select id="date_hour" name="date[hour]">\n)
     expected << %(<option value="00">00</option>\n<option value="01">01</option>\n<option value="02">02</option>\n<option value="03">03</option>\n<option value="04">04</option>\n<option value="05">05</option>\n<option value="06">06</option>\n<option value="07">07</option>\n<option value="08" selected="selected">08</option>\n<option value="09">09</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n)
     expected << "</select>\n"
@@ -1182,7 +1182,7 @@ class DateHelperTest < ActionView::TestCase
     expected = %(<input name="date[year]" id="date_year" value="2003" type="hidden" />\n)
     expected << %(<input name="date[month]" id="date_month" value="8" type="hidden" />\n)
     expected << %(<input name="date[day]" id="date_day" value="16" type="hidden" />\n)
-    
+
     expected << %(<select id="date_hour" name="date[hour]">\n)
     expected << %(<option value="00">00</option>\n<option value="01">01</option>\n<option value="02">02</option>\n<option value="03">03</option>\n<option value="04">04</option>\n<option value="05">05</option>\n<option value="06">06</option>\n<option value="07">07</option>\n<option value="08" selected="selected">08</option>\n<option value="09">09</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n)
     expected << "</select>\n"
@@ -1206,7 +1206,7 @@ class DateHelperTest < ActionView::TestCase
     expected = %(<input name="date[year]" id="date_year" value="2003" type="hidden" />\n)
     expected << %(<input name="date[month]" id="date_month" value="8" type="hidden" />\n)
     expected << %(<input name="date[day]" id="date_day" value="16" type="hidden" />\n)
-        
+
     expected << %(<select id="date_hour" name="date[hour]" class="selector">\n)
     expected << %(<option value="00">00</option>\n<option value="01">01</option>\n<option value="02">02</option>\n<option value="03">03</option>\n<option value="04">04</option>\n<option value="05">05</option>\n<option value="06">06</option>\n<option value="07">07</option>\n<option value="08" selected="selected">08</option>\n<option value="09">09</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n)
     expected << "</select>\n"
@@ -1229,11 +1229,11 @@ class DateHelperTest < ActionView::TestCase
     expected = %(<input name="date[year]" id="date_year" value="2003" type="hidden" />\n)
     expected << %(<input name="date[month]" id="date_month" value="8" type="hidden" />\n)
     expected << %(<input name="date[day]" id="date_day" value="16" type="hidden" />\n)
-    
+
     expected << %(<select id="date_hour" name="date[hour]">\n)
     expected << %(<option value="">Hour</option>\n<option value="00">00</option>\n<option value="01">01</option>\n<option value="02">02</option>\n<option value="03">03</option>\n<option value="04">04</option>\n<option value="05">05</option>\n<option value="06">06</option>\n<option value="07">07</option>\n<option value="08" selected="selected">08</option>\n<option value="09">09</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n)
     expected << "</select>\n"
-    
+
     expected << " : "
 
     expected << %(<select id="date_minute" name="date[minute]">\n)
@@ -1253,7 +1253,7 @@ class DateHelperTest < ActionView::TestCase
     expected = %(<input name="date[year]" id="date_year" value="2003" type="hidden" />\n)
     expected << %(<input name="date[month]" id="date_month" value="8" type="hidden" />\n)
     expected << %(<input name="date[day]" id="date_day" value="16" type="hidden" />\n)
-    
+
     expected << %(<select id="date_hour" name="date[hour]">\n)
     expected << %(<option value="">Choose hour</option>\n<option value="00">00</option>\n<option value="01">01</option>\n<option value="02">02</option>\n<option value="03">03</option>\n<option value="04">04</option>\n<option value="05">05</option>\n<option value="06">06</option>\n<option value="07">07</option>\n<option value="08" selected="selected">08</option>\n<option value="09">09</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n)
     expected << "</select>\n"
@@ -1497,26 +1497,6 @@ class DateHelperTest < ActionView::TestCase
     assert_dom_equal expected, date_select("post", "written_on", :order=>[:year, :month], :include_blank=>true)
   end
 
-  def test_date_select_with_nil_and_blank_and_order
-    @post = Post.new
-
-    start_year = Time.now.year-5
-    end_year   = Time.now.year+5
-
-    expected = '<input name="post[written_on(3i)]" type="hidden" id="post_written_on_3i"/>' + "\n"
-    expected <<   %{<select id="post_written_on_1i" name="post[written_on(1i)]">\n}
-    expected << "<option value=\"\"></option>\n"
-    start_year.upto(end_year) { |i| expected << %(<option value="#{i}">#{i}</option>\n) }
-    expected << "</select>\n"
-
-    expected << %{<select id="post_written_on_2i" name="post[written_on(2i)]">\n}
-    expected << "<option value=\"\"></option>\n"
-    1.upto(12) { |i| expected << %(<option value="#{i}">#{Date::MONTHNAMES[i]}</option>\n) }
-    expected << "</select>\n"
-
-    assert_dom_equal expected, date_select("post", "written_on", :order=>[:year, :month], :include_blank=>true)
-  end
-
   def test_date_select_cant_override_discard_hour
     @post = Post.new
     @post.written_on = Date.new(2004, 6, 15)
@@ -1604,6 +1584,47 @@ class DateHelperTest < ActionView::TestCase
     assert_dom_equal expected, date_select("post", "written_on", { :date_separator => " / " })
   end
 
+  def test_date_select_with_separator_and_order
+    @post = Post.new
+    @post.written_on = Date.new(2004, 6, 15)
+
+    expected = %{<select id="post_written_on_3i" name="post[written_on(3i)]">\n}
+    expected << %{<option value="1">1</option>\n<option value="2">2</option>\n<option value="3">3</option>\n<option value="4">4</option>\n<option value="5">5</option>\n<option value="6">6</option>\n<option value="7">7</option>\n<option value="8">8</option>\n<option value="9">9</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15" selected="selected">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n<option value="24">24</option>\n<option value="25">25</option>\n<option value="26">26</option>\n<option value="27">27</option>\n<option value="28">28</option>\n<option value="29">29</option>\n<option value="30">30</option>\n<option value="31">31</option>\n}
+    expected << "</select>\n"
+
+    expected << " / "
+
+    expected << %{<select id="post_written_on_2i" name="post[written_on(2i)]">\n}
+    expected << %{<option value="1">January</option>\n<option value="2">February</option>\n<option value="3">March</option>\n<option value="4">April</option>\n<option value="5">May</option>\n<option value="6" selected="selected">June</option>\n<option value="7">July</option>\n<option value="8">August</option>\n<option value="9">September</option>\n<option value="10">October</option>\n<option value="11">November</option>\n<option value="12">December</option>\n}
+    expected << "</select>\n"
+
+    expected << " / "
+
+    expected << %{<select id="post_written_on_1i" name="post[written_on(1i)]">\n}
+    expected << %{<option value="1999">1999</option>\n<option value="2000">2000</option>\n<option value="2001">2001</option>\n<option value="2002">2002</option>\n<option value="2003">2003</option>\n<option value="2004" selected="selected">2004</option>\n<option value="2005">2005</option>\n<option value="2006">2006</option>\n<option value="2007">2007</option>\n<option value="2008">2008</option>\n<option value="2009">2009</option>\n}
+    expected << "</select>\n"
+
+    assert_dom_equal expected, date_select("post", "written_on", { :order => [:day, :month, :year], :date_separator => " / " })
+  end
+
+  def test_date_select_with_separator_and_order_and_year_discarded
+    @post = Post.new
+    @post.written_on = Date.new(2004, 6, 15)
+
+    expected = %{<select id="post_written_on_3i" name="post[written_on(3i)]">\n}
+    expected << %{<option value="1">1</option>\n<option value="2">2</option>\n<option value="3">3</option>\n<option value="4">4</option>\n<option value="5">5</option>\n<option value="6">6</option>\n<option value="7">7</option>\n<option value="8">8</option>\n<option value="9">9</option>\n<option value="10">10</option>\n<option value="11">11</option>\n<option value="12">12</option>\n<option value="13">13</option>\n<option value="14">14</option>\n<option value="15" selected="selected">15</option>\n<option value="16">16</option>\n<option value="17">17</option>\n<option value="18">18</option>\n<option value="19">19</option>\n<option value="20">20</option>\n<option value="21">21</option>\n<option value="22">22</option>\n<option value="23">23</option>\n<option value="24">24</option>\n<option value="25">25</option>\n<option value="26">26</option>\n<option value="27">27</option>\n<option value="28">28</option>\n<option value="29">29</option>\n<option value="30">30</option>\n<option value="31">31</option>\n}
+    expected << "</select>\n"
+
+    expected << " / "
+
+    expected << %{<select id="post_written_on_2i" name="post[written_on(2i)]">\n}
+    expected << %{<option value="1">January</option>\n<option value="2">February</option>\n<option value="3">March</option>\n<option value="4">April</option>\n<option value="5">May</option>\n<option value="6" selected="selected">June</option>\n<option value="7">July</option>\n<option value="8">August</option>\n<option value="9">September</option>\n<option value="10">October</option>\n<option value="11">November</option>\n<option value="12">December</option>\n}
+    expected << "</select>\n"
+    expected << %{<input type="hidden" id="post_written_on_1i" name="post[written_on(1i)]" value="2004" />\n}
+
+    assert_dom_equal expected, date_select("post", "written_on", { :order => [:day, :month, :year], :discard_year => true, :date_separator => " / " })
+  end
+
   def test_date_select_with_default_prompt
     @post = Post.new
     @post.written_on = Date.new(2004, 6, 15)
@@ -1861,10 +1882,17 @@ class DateHelperTest < ActionView::TestCase
   end
 
   def test_datetime_select_defaults_to_time_zone_now_when_config_time_zone_is_set
-    time = stub(:year => 2004, :month => 6, :day => 15, :hour => 16, :min => 35, :sec => 0)
-    time_zone = mock()
-    time_zone.expects(:now).returns time
-    Time.zone_default = time_zone
+    # The love zone is UTC+0
+    mytz = Class.new(ActiveSupport::TimeZone) {
+      attr_accessor :now
+    }.create('tenderlove', 0)
+
+    now       = Time.mktime(2004, 6, 15, 16, 35, 0)
+    mytz.now  = now
+    Time.zone = mytz
+
+    assert_equal mytz, Time.zone
+
     @post = Post.new
 
     expected = %{<select id="post_updated_at_1i" name="post[updated_at(1i)]">\n}
@@ -1891,7 +1919,7 @@ class DateHelperTest < ActionView::TestCase
 
     assert_dom_equal expected, datetime_select("post", "updated_at")
   ensure
-    Time.zone_default = nil
+    Time.zone = nil
   end
 
   def test_datetime_select_with_html_options_within_fields_for
@@ -2670,13 +2698,39 @@ class DateHelperTest < ActionView::TestCase
     assert select_time(Time.mktime(2003, 8, 16, 8, 4, 18), {}, :class => 'selector').html_safe?
     assert select_date(Time.mktime(2003, 8, 16), :date_separator => " / ", :start_year => 2003, :end_year => 2005, :prefix => "date[first]").html_safe?
   end
-  
+
   def test_object_select_html_safety
     @post = Post.new
     @post.written_on = Date.new(2004, 6, 15)
 
-    assert date_select("post", "written_on", :default => Time.local(2006, 9, 19, 15, 16, 35), :include_blank => true).html_safe?    
-    assert time_select("post", "written_on", :ignore_date => true).html_safe?    
+    assert date_select("post", "written_on", :default => Time.local(2006, 9, 19, 15, 16, 35), :include_blank => true).html_safe?
+    assert time_select("post", "written_on", :ignore_date => true).html_safe?
+  end
+
+  def test_time_tag_with_date
+    date = Date.today
+    expected = "<time datetime=\"#{date.rfc3339}\">#{I18n.l(date, :format => :long)}</time>"
+    assert_equal expected, time_tag(date)
+  end
+
+  def test_time_tag_with_time
+    time = Time.now
+    expected = "<time datetime=\"#{time.xmlschema}\">#{I18n.l(time, :format => :long)}</time>"
+    assert_equal expected, time_tag(time)
+  end
+
+  def test_time_tag_pubdate_option
+    assert_match /<time.*pubdate="pubdate">.*<\/time>/, time_tag(Time.now, :pubdate => true)
+  end
+
+  def test_time_tag_with_given_text
+    assert_match /<time.*>Right now<\/time>/, time_tag(Time.now, 'Right now')
+  end
+
+  def test_time_tag_with_different_format
+    time = Time.now
+    expected = "<time datetime=\"#{time.xmlschema}\">#{I18n.l(time, :format => :short)}</time>"
+    assert_equal expected, time_tag(time, :format => :short)
   end
 
   protected
diff --git a/actionpack/test/template/erb/tag_helper_test.rb b/actionpack/test/template/erb/tag_helper_test.rb
index d073100986..a384e94766 100644
--- a/actionpack/test/template/erb/tag_helper_test.rb
+++ b/actionpack/test/template/erb/tag_helper_test.rb
@@ -2,59 +2,32 @@ require "abstract_unit"
 require "template/erb/helper"
 
 module ERBTest
-  module SharedTagHelpers
-    extend ActiveSupport::Testing::Declarative
+  class TagHelperTest < BlockTestCase
 
-    def maybe_deprecated
-      if @deprecated
-        assert_deprecated { yield }
-      else
-        yield
-      end
-    end
+    extend ActiveSupport::Testing::Declarative
 
     test "percent equals works for content_tag and does not require parenthesis on method call" do
-      maybe_deprecated { assert_equal "<div>Hello world</div>", render_content("content_tag :div", "Hello world") }
+      assert_equal "<div>Hello world</div>", render_content("content_tag :div", "Hello world")
     end
 
     test "percent equals works for javascript_tag" do
       expected_output = "<script type=\"text/javascript\">\n//<![CDATA[\nalert('Hello')\n//]]>\n</script>"
-      maybe_deprecated { assert_equal expected_output, render_content("javascript_tag", "alert('Hello')") }
+      assert_equal expected_output, render_content("javascript_tag", "alert('Hello')")
     end
 
     test "percent equals works for javascript_tag with options" do
       expected_output = "<script id=\"the_js_tag\" type=\"text/javascript\">\n//<![CDATA[\nalert('Hello')\n//]]>\n</script>"
-      maybe_deprecated { assert_equal expected_output, render_content("javascript_tag(:id => 'the_js_tag')", "alert('Hello')") }
+      assert_equal expected_output, render_content("javascript_tag(:id => 'the_js_tag')", "alert('Hello')")
     end
 
     test "percent equals works with form tags" do
       expected_output = %r{<form.*action="foo".*method="post">.*hello*</form>}
-      maybe_deprecated { assert_match expected_output, render_content("form_tag('foo')", "<%= 'hello' %>") }
+      assert_match expected_output, render_content("form_tag('foo')", "<%= 'hello' %>")
     end
 
     test "percent equals works with fieldset tags" do
       expected_output = "<fieldset><legend>foo</legend>hello</fieldset>"
-      maybe_deprecated { assert_equal expected_output, render_content("field_set_tag('foo')", "<%= 'hello' %>") }
-    end
-  end
-
-  class TagHelperTest < BlockTestCase
-    def block_helper(str, rest)
-      "<%= #{str} do %>#{rest}<% end %>"
+      assert_equal expected_output, render_content("field_set_tag('foo')", "<%= 'hello' %>")
     end
-
-    include SharedTagHelpers
-  end
-
-  class DeprecatedTagHelperTest < BlockTestCase
-    def block_helper(str, rest)
-      "<% __in_erb_template=true %><% #{str} do %>#{rest}<% end %>"
-    end
-
-    def setup
-      @deprecated = true
-    end
-
-    include SharedTagHelpers
   end
 end
\ No newline at end of file
diff --git a/actionpack/test/template/erb_util_test.rb b/actionpack/test/template/erb_util_test.rb
index d3129d0e1a..d1891094e8 100644
--- a/actionpack/test/template/erb_util_test.rb
+++ b/actionpack/test/template/erb_util_test.rb
@@ -14,7 +14,7 @@ class ErbUtilTest < Test::Unit::TestCase
       end
     end
   end
-  
+
   def test_html_escape_is_html_safe
     escaped = h("<p>")
     assert_equal "&lt;p&gt;", escaped
diff --git a/actionpack/test/template/form_helper_test.rb b/actionpack/test/template/form_helper_test.rb
index be66710ae5..359b078466 100644
--- a/actionpack/test/template/form_helper_test.rb
+++ b/actionpack/test/template/form_helper_test.rb
@@ -4,16 +4,6 @@ require 'controller/fake_models'
 class FormHelperTest < ActionView::TestCase
   tests ActionView::Helpers::FormHelper
 
-  class Developer
-    def name_before_type_cast
-      "David"
-    end
-
-    def name
-      "Santiago"
-    end
-  end
-
   def form_for(*)
     @output_buffer = super
   end
@@ -73,15 +63,38 @@ class FormHelperTest < ActionView::TestCase
     @post.body        = "Back to the hill and over it again!"
     @post.secret      = 1
     @post.written_on  = Date.new(2004, 6, 15)
+
+    @blog_post = Blog::Post.new("And his name will be forty and four.", 44)
+  end
+
+  Routes = ActionDispatch::Routing::RouteSet.new
+  Routes.draw do
+    resources :posts do
+      resources :comments
+    end
+
+    namespace :admin do
+      resources :posts do
+        resources :comments
+      end
+    end
+
+    match "/foo", :to => "controller#action"
+    root :to => "main#index"
   end
 
+  def _routes
+    Routes
+  end
+
+  include Routes.url_helpers
+
   def url_for(object)
     @url_for_options = object
-    if object.is_a?(Hash)
-      "http://www.example.com"
-    else
-      super
+    if object.is_a?(Hash) && object[:use_route].blank? && object[:controller].blank?
+      object.merge!(:controller => "main", :action => "index")
     end
+    super
   end
 
   def test_label
@@ -165,7 +178,10 @@ class FormHelperTest < ActionView::TestCase
       '<input id="post_title" name="post[title]" size="30" type="text" value="Hello World" />', text_field("post", "title")
     )
     assert_dom_equal(
-      '<input id="post_title" name="post[title]" size="30" type="password" value="Hello World" />', password_field("post", "title")
+      '<input id="post_title" name="post[title]" size="30" type="password" />', password_field("post", "title")
+    )
+    assert_dom_equal(
+      '<input id="post_title" name="post[title]" size="30" type="password" value="Hello World" />', password_field("post", "title", :value => @post.title)
     )
     assert_dom_equal(
       '<input id="person_name" name="person[name]" size="30" type="password" />', password_field("person", "name")
@@ -240,7 +256,7 @@ class FormHelperTest < ActionView::TestCase
     assert_dom_equal expected, hidden_field("post", "title", :value => nil)
   end
 
-  def test_text_field_with_options
+  def test_hidden_field_with_options
     assert_dom_equal '<input id="post_title" name="post[title]" type="hidden" value="Something Else" />',
       hidden_field("post", "title", :value => "Something Else")
   end
@@ -250,13 +266,6 @@ class FormHelperTest < ActionView::TestCase
       text_field("user", "email", :type => "email")
   end
 
-  def test_text_field_from_a_user_defined_method
-    @developer = Developer.new
-    assert_dom_equal(
-      '<input id="developer_name" name="developer[name]" size="30" type="text" value="Santiago" />', text_field("developer", "name")
-    )
-  end
-
   def test_check_box
     assert_dom_equal(
       '<input name="post[secret]" type="hidden" value="0" /><input checked="checked" id="post_secret" name="post[secret]" type="checkbox" value="1" />',
@@ -600,31 +609,91 @@ class FormHelperTest < ActionView::TestCase
     )
   end
 
+  def test_form_for_requires_block
+    assert_raises(ArgumentError) do
+      form_for(:post, @post, :html => { :id => 'create-post' })
+    end
+  end
+
   def test_form_for
-    assert_deprecated do
-      form_for(:post, @post, :html => { :id => 'create-post' }) do |f|
-        concat f.label(:title) { "The Title" }
-        concat f.text_field(:title)
-        concat f.text_area(:body)
-        concat f.check_box(:secret)
-        concat f.submit('Create post')
-      end
+    form_for(@post, :html => { :id => 'create-post' }) do |f|
+      concat f.label(:title) { "The Title" }
+      concat f.text_field(:title)
+      concat f.text_area(:body)
+      concat f.check_box(:secret)
+      concat f.submit('Create post')
     end
 
-    expected =
-      "<form accept-charset='UTF-8' action='http://www.example.com' id='create-post' method='post'>" +
-      snowman +
+    expected = whole_form("/posts/123", "create-post" , "edit_post", :method => "put") do
       "<label for='post_title'>The Title</label>" +
       "<input name='post[title]' size='30' type='text' id='post_title' value='Hello World' />" +
       "<textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='post[secret]' type='hidden' value='0' />" +
       "<input name='post[secret]' checked='checked' type='checkbox' id='post_secret' value='1' />" +
-      "<input name='commit' id='post_submit' type='submit' value='Create post' />" +
-      "</form>"
+      "<input name='commit' type='submit' value='Create post' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
+  def test_form_for_with_file_field_generate_multipart
+    Post.send :attr_accessor, :file
+
+    form_for(@post, :html => { :id => 'create-post' }) do |f|
+      concat f.file_field(:file)
+    end
+
+    expected = whole_form("/posts/123", "create-post" , "edit_post", :method => "put", :multipart => true) do
+      "<input name='post[file]' type='file' id='post_file' />"
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_fields_for_with_file_field_generate_multipart
+    Comment.send :attr_accessor, :file
+
+    form_for(@post) do |f|
+      concat f.fields_for(:comment, @post) { |c|
+        concat c.file_field(:file)
+      }
+    end
+
+    expected = whole_form("/posts/123", "edit_post_123" , "edit_post", :method => "put", :multipart => true) do
+      "<input name='post[comment][file]' type='file' id='post_comment_file' />"
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+
+  def test_form_for_with_format
+    form_for(@post, :format => :json, :html => { :id => "edit_post_123", :class => "edit_post" }) do |f|
+      concat f.label(:title)
+    end
+
+    expected = whole_form("/posts/123.json", "edit_post_123" , "edit_post", :method => "put") do
+      "<label for='post_title'>Title</label>"
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_form_for_with_isolated_namespaced_model
+    form_for(@blog_post) do |f|
+      concat f.text_field :title
+      concat f.submit('Edit post')
+    end
+
+    expected =
+      "<form accept-charset='UTF-8' action='/posts/44' method='post'>" +
+      snowman +
+      "<label for='post_title'>The Title</label>" +
+      "<input name='post[title]' size='30' type='text' id='post_title' value='And his name will be forty and four.' />" +
+      "<input name='commit' id='post_submit' type='submit' value='Edit post' />" +
+      "</form>"
+  end
+
   def test_form_for_with_symbol_object_name
     form_for(@post, :as => "other_name", :html => { :id => 'create-post' }) do |f|
       concat f.label(:title, :class => 'post_title')
@@ -640,22 +709,20 @@ class FormHelperTest < ActionView::TestCase
       "<textarea name='other_name[body]' id='other_name_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='other_name[secret]' value='0' type='hidden' />" +
       "<input name='other_name[secret]' checked='checked' id='other_name_secret' value='1' type='checkbox' />" +
-      "<input name='commit' id='other_name_submit' value='Create post' type='submit' />"
+      "<input name='commit' value='Create post' type='submit' />"
     end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_form_for_with_method
-    assert_deprecated do
-      form_for(:post, @post, :html => { :id => 'create-post', :method => :put }) do |f|
-        concat f.text_field(:title)
-        concat f.text_area(:body)
-        concat f.check_box(:secret)
-      end
+    form_for(@post, :url => '/', :html => { :id => 'create-post', :method => :put }) do |f|
+      concat f.text_field(:title)
+      concat f.text_area(:body)
+      concat f.check_box(:secret)
     end
 
-    expected =  whole_form("http://www.example.com", "create-post", nil, "put") do
+    expected =  whole_form("/", "create-post", "edit_post", "put") do
       "<input name='post[title]' size='30' type='text' id='post_title' value='Hello World' />" +
       "<textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='post[secret]' type='hidden' value='0' />" +
@@ -665,16 +732,28 @@ class FormHelperTest < ActionView::TestCase
     assert_dom_equal expected, output_buffer
   end
 
+  def test_form_for_with_search_field
+    # Test case for bug which would emit an "object" attribute
+    # when used with form_for using a search_field form helper
+    form_for(Post.new, :url => "/search", :html => { :id => 'search-post', :method => :get}) do |f|
+      concat f.search_field(:title)
+    end
+
+    expected =  whole_form("/search", "search-post", "new_post", "get") do
+      "<input name='post[title]' size='30' type='search' id='post_title' />"
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
   def test_form_for_with_remote
-    assert_deprecated do
-      form_for(:post, @post, :remote => true, :html => { :id => 'create-post', :method => :put }) do |f|
-        concat f.text_field(:title)
-        concat f.text_area(:body)
-        concat f.check_box(:secret)
-      end
+    form_for(@post, :url => '/', :remote => true, :html => { :id => 'create-post', :method => :put }) do |f|
+      concat f.text_field(:title)
+      concat f.text_area(:body)
+      concat f.check_box(:secret)
     end
 
-    expected =  whole_form("http://www.example.com", "create-post", nil, :method => "put", :remote => true) do
+    expected =  whole_form("/", "create-post", "edit_post", :method => "put", :remote => true) do
       "<input name='post[title]' size='30' type='text' id='post_title' value='Hello World' />" +
       "<textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='post[secret]' type='hidden' value='0' />" +
@@ -685,15 +764,14 @@ class FormHelperTest < ActionView::TestCase
   end
 
   def test_form_for_with_remote_without_html
-    assert_deprecated do
-      form_for(:post, @post, :remote => true) do |f|
-        concat f.text_field(:title)
-        concat f.text_area(:body)
-        concat f.check_box(:secret)
-      end
+    @post.persisted = false
+    form_for(@post, :remote => true) do |f|
+      concat f.text_field(:title)
+      concat f.text_area(:body)
+      concat f.check_box(:secret)
     end
 
-    expected =  whole_form("http://www.example.com", nil, nil, :remote => true) do
+    expected =  whole_form("/posts", 'new_post', 'new_post', :remote => true) do
       "<input name='post[title]' size='30' type='text' id='post_title' value='Hello World' />" +
       "<textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='post[secret]' type='hidden' value='0' />" +
@@ -710,7 +788,7 @@ class FormHelperTest < ActionView::TestCase
       concat f.check_box(:secret)
     end
 
-    expected =  whole_form("http://www.example.com", "create-post") do
+    expected = whole_form("/", "create-post") do
       "<input name='post[title]' size='30' type='text' id='post_title' value='Hello World' />" +
       "<textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='post[secret]' type='hidden' value='0' />" +
@@ -721,16 +799,14 @@ class FormHelperTest < ActionView::TestCase
   end
 
   def test_form_for_with_index
-    assert_deprecated do
-      form_for("post[]", @post) do |f|
-        concat f.label(:title)
-        concat f.text_field(:title)
-        concat f.text_area(:body)
-        concat f.check_box(:secret)
-      end
+    form_for(@post, :as => "post[]") do |f|
+      concat f.label(:title)
+      concat f.text_field(:title)
+      concat f.text_area(:body)
+      concat f.check_box(:secret)
     end
 
-    expected = whole_form do
+    expected = whole_form('/posts/123', 'post[]_edit', 'post[]_edit', 'put') do
       "<label for='post_123_title'>Title</label>" +
       "<input name='post[123][title]' size='30' type='text' id='post_123_title' value='Hello World' />" +
       "<textarea name='post[123][body]' id='post_123_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
@@ -742,15 +818,13 @@ class FormHelperTest < ActionView::TestCase
   end
 
   def test_form_for_with_nil_index_option_override
-    assert_deprecated do
-      form_for("post[]", @post, :index => nil) do |f|
-        concat f.text_field(:title)
-        concat f.text_area(:body)
-        concat f.check_box(:secret)
-      end
+    form_for(@post, :as => "post[]", :index => nil) do |f|
+      concat f.text_field(:title)
+      concat f.text_area(:body)
+      concat f.check_box(:secret)
     end
 
-    expected = whole_form do
+    expected = whole_form('/posts/123', 'post[]_edit', 'post[]_edit', 'put') do
       "<input name='post[][title]' size='30' type='text' id='post__title' value='Hello World' />" +
       "<textarea name='post[][body]' id='post__body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='post[][secret]' type='hidden' value='0' />" +
@@ -764,15 +838,13 @@ class FormHelperTest < ActionView::TestCase
     old_locale, I18n.locale = I18n.locale, :submit
 
     @post.persisted = false
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.submit
-      end
+    form_for(@post) do |f|
+      concat f.submit
     end
 
-    expected =  whole_form do
-                  "<input name='commit' id='post_submit' type='submit' value='Create Post' />"
-                end
+    expected = whole_form('/posts', 'new_post', 'new_post') do
+      "<input name='commit' type='submit' value='Create Post' />"
+    end
 
     assert_dom_equal expected, output_buffer
   ensure
@@ -782,15 +854,13 @@ class FormHelperTest < ActionView::TestCase
   def test_submit_with_object_as_existing_record_and_locale_strings
     old_locale, I18n.locale = I18n.locale, :submit
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.submit
-      end
+    form_for(@post) do |f|
+      concat f.submit
     end
 
-    expected =  whole_form do
-                  "<input name='commit' id='post_submit' type='submit' value='Confirm Post changes' />"
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      "<input name='commit' type='submit' value='Confirm Post changes' />"
+    end
 
     assert_dom_equal expected, output_buffer
   ensure
@@ -804,9 +874,9 @@ class FormHelperTest < ActionView::TestCase
       concat f.submit :class => "extra"
     end
 
-    expected =  whole_form do
-                  "<input name='commit' class='extra' id='post_submit' type='submit' value='Save changes' />"
-                end
+    expected = whole_form do
+      "<input name='commit' class='extra' type='submit' value='Save changes' />"
+    end
 
     assert_dom_equal expected, output_buffer
   ensure
@@ -816,15 +886,13 @@ class FormHelperTest < ActionView::TestCase
   def test_submit_with_object_and_nested_lookup
     old_locale, I18n.locale = I18n.locale, :submit
 
-    assert_deprecated do
-      form_for(:another_post, @post) do |f|
-        concat f.submit
-      end
+    form_for(@post, :as => :another_post) do |f|
+      concat f.submit
     end
 
-    expected =  whole_form do
-                  "<input name='commit' id='another_post_submit' type='submit' value='Update your Post' />"
-                end
+    expected = whole_form('/posts/123', 'another_post_edit', 'another_post_edit', :method => 'put') do
+      "<input name='commit' type='submit' value='Update your Post' />"
+    end
 
     assert_dom_equal expected, output_buffer
   ensure
@@ -832,188 +900,167 @@ class FormHelperTest < ActionView::TestCase
   end
 
   def test_nested_fields_for
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.fields_for(:comment, @post) { |c|
-          concat c.text_field(:title)
-        }
-      end
+    @comment.body = 'Hello World'
+    form_for(@post) do |f|
+      concat f.fields_for(@comment) { |c|
+        concat c.text_field(:body)
+      }
     end
 
-    expected =  whole_form do
-                  "<input name='post[comment][title]' size='30' type='text' id='post_comment_title' value='Hello World' />"
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      "<input name='post[comment][body]' size='30' type='text' id='post_comment_body' value='Hello World' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_nested_collections
-    assert_deprecated do
-      form_for('post[]', @post) do |f|
-        concat f.text_field(:title)
-        concat f.fields_for('comment[]', @comment) { |c|
-          concat c.text_field(:name)
-        }
-      end
+    form_for(@post, :as => 'post[]') do |f|
+      concat f.text_field(:title)
+      concat f.fields_for('comment[]', @comment) { |c|
+        concat c.text_field(:name)
+      }
     end
 
-    expected =  whole_form do
-                  "<input name='post[123][title]' size='30' type='text' id='post_123_title' value='Hello World' />" +
-                  "<input name='post[123][comment][][name]' size='30' type='text' id='post_123_comment__name' value='new comment' />"
-                end
+    expected = whole_form('/posts/123', 'post[]_edit', 'post[]_edit', 'put') do
+      "<input name='post[123][title]' size='30' type='text' id='post_123_title' value='Hello World' />" +
+      "<input name='post[123][comment][][name]' size='30' type='text' id='post_123_comment__name' value='new comment' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_index_and_parent_fields
-    assert_deprecated do
-      form_for('post', @post, :index => 1) do |c|
-        concat c.text_field(:title)
-        concat c.fields_for('comment', @comment, :index => 1) { |r|
-          concat r.text_field(:name)
-        }
-      end
+    form_for(@post, :index => 1) do |c|
+      concat c.text_field(:title)
+      concat c.fields_for('comment', @comment, :index => 1) { |r|
+        concat r.text_field(:name)
+      }
     end
 
-    expected =  whole_form do
-                  "<input name='post[1][title]' size='30' type='text' id='post_1_title' value='Hello World' />" +
-                  "<input name='post[1][comment][1][name]' size='30' type='text' id='post_1_comment_1_name' value='new comment' />"
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', 'put') do
+      "<input name='post[1][title]' size='30' type='text' id='post_1_title' value='Hello World' />" +
+      "<input name='post[1][comment][1][name]' size='30' type='text' id='post_1_comment_1_name' value='new comment' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_form_for_with_index_and_nested_fields_for
-    assert_deprecated do
-      output_buffer = form_for(:post, @post, :index => 1) do |f|
-        concat f.fields_for(:comment, @post) { |c|
-          concat c.text_field(:title)
-        }
-      end
+    output_buffer = form_for(@post, :index => 1) do |f|
+      concat f.fields_for(:comment, @post) { |c|
+        concat c.text_field(:title)
+      }
     end
 
-    expected =  whole_form do
-                  "<input name='post[1][comment][title]' size='30' type='text' id='post_1_comment_title' value='Hello World' />"
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', 'put') do
+      "<input name='post[1][comment][title]' size='30' type='text' id='post_1_comment_title' value='Hello World' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_index_on_both
-    assert_deprecated do
-      form_for(:post, @post, :index => 1) do |f|
-        concat f.fields_for(:comment, @post, :index => 5) { |c|
-          concat c.text_field(:title)
-        }
-      end
+    form_for(@post, :index => 1) do |f|
+      concat f.fields_for(:comment, @post, :index => 5) { |c|
+        concat c.text_field(:title)
+      }
     end
 
-    expected =  whole_form do
-                  "<input name='post[1][comment][5][title]' size='30' type='text' id='post_1_comment_5_title' value='Hello World' />"
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', 'put') do
+      "<input name='post[1][comment][5][title]' size='30' type='text' id='post_1_comment_5_title' value='Hello World' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_auto_index
-    assert_deprecated do
-      form_for("post[]", @post) do |f|
-        concat f.fields_for(:comment, @post) { |c|
-          concat c.text_field(:title)
-        }
-      end
+    form_for(@post, :as => "post[]") do |f|
+      concat f.fields_for(:comment, @post) { |c|
+        concat c.text_field(:title)
+      }
     end
 
-    expected =  whole_form do
-                  "<input name='post[123][comment][title]' size='30' type='text' id='post_123_comment_title' value='Hello World' />"
-                end
+    expected = whole_form('/posts/123', 'post[]_edit', 'post[]_edit', 'put') do
+      "<input name='post[123][comment][title]' size='30' type='text' id='post_123_comment_title' value='Hello World' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_index_radio_button
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.fields_for(:comment, @post, :index => 5) { |c|
-          concat c.radio_button(:title, "hello")
-        }
-      end
+    form_for(@post) do |f|
+      concat f.fields_for(:comment, @post, :index => 5) { |c|
+        concat c.radio_button(:title, "hello")
+      }
     end
 
-    expected =  whole_form do
-                  "<input name='post[comment][5][title]' type='radio' id='post_comment_5_title_hello' value='hello' />"
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', 'put') do
+      "<input name='post[comment][5][title]' type='radio' id='post_comment_5_title_hello' value='hello' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_auto_index_on_both
-    assert_deprecated do
-      form_for("post[]", @post) do |f|
-        concat f.fields_for("comment[]", @post) { |c|
-          concat c.text_field(:title)
-        }
-      end
+    form_for(@post, :as => "post[]") do |f|
+      concat f.fields_for("comment[]", @post) { |c|
+        concat c.text_field(:title)
+      }
     end
 
-    expected =  whole_form do
-                  "<input name='post[123][comment][123][title]' size='30' type='text' id='post_123_comment_123_title' value='Hello World' />"
-                end
+    expected = whole_form('/posts/123', 'post[]_edit', 'post[]_edit', 'put') do
+      "<input name='post[123][comment][123][title]' size='30' type='text' id='post_123_comment_123_title' value='Hello World' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_index_and_auto_index
-    assert_deprecated do
-      output_buffer = form_for("post[]", @post) do |f|
-        concat f.fields_for(:comment, @post, :index => 5) { |c|
-          concat c.text_field(:title)
-        }
-      end
-
-      output_buffer << form_for(:post, @post, :index => 1) do |f|
-        concat f.fields_for("comment[]", @post) { |c|
-          concat c.text_field(:title)
-        }
-      end
+    output_buffer = form_for(@post, :as => "post[]") do |f|
+      concat f.fields_for(:comment, @post, :index => 5) { |c|
+        concat c.text_field(:title)
+      }
+    end
 
-      expected =  whole_form do
-                    "<input name='post[123][comment][5][title]' size='30' type='text' id='post_123_comment_5_title' value='Hello World' />"
-                  end + whole_form do
-                    "<input name='post[1][comment][123][title]' size='30' type='text' id='post_1_comment_123_title' value='Hello World' />"
-                  end
+    output_buffer << form_for(@post, :as => :post, :index => 1) do |f|
+      concat f.fields_for("comment[]", @post) { |c|
+        concat c.text_field(:title)
+      }
+    end
 
-      assert_dom_equal expected, output_buffer
+    expected = whole_form('/posts/123', 'post[]_edit', 'post[]_edit', 'put') do
+      "<input name='post[123][comment][5][title]' size='30' type='text' id='post_123_comment_5_title' value='Hello World' />"
+    end + whole_form('/posts/123', 'post_edit', 'post_edit', 'put') do
+      "<input name='post[1][comment][123][title]' size='30' type='text' id='post_1_comment_123_title' value='Hello World' />"
     end
+
+    assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_a_new_record_on_a_nested_attributes_one_to_one_association
     @post.author = Author.new
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        concat f.fields_for(:author) { |af|
-          concat af.text_field(:name)
-        }
-      end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author) { |af|
+        concat af.text_field(:name)
+      }
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="new author" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+        '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="new author" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_explicitly_passed_object_on_a_nested_attributes_one_to_one_association
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        f.fields_for(:author, Author.new(123)) do |af|
-          assert_not_nil af.object
-          assert_equal 123, af.object.id
-        end
+    form_for(@post) do |f|
+      f.fields_for(:author, Author.new(123)) do |af|
+        assert_not_nil af.object
+        assert_equal 123, af.object.id
       end
     end
   end
@@ -1021,67 +1068,238 @@ class FormHelperTest < ActionView::TestCase
   def test_nested_fields_for_with_an_existing_record_on_a_nested_attributes_one_to_one_association
     @post.author = Author.new(321)
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        concat f.fields_for(:author) { |af|
-          concat af.text_field(:name)
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author) { |af|
+        concat af.text_field(:name)
+      }
+    end
+
+   expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+     '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+     '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />' +
+     '<input id="post_author_attributes_id" name="post[author_attributes][id]" type="hidden" value="321" />'
+   end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_with_an_existing_record_on_a_nested_attributes_one_to_one_association_using_erb_and_inline_block
+    @post.author = Author.new(321)
+
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author) { |af|
+        af.text_field(:name)
+      }
+    end
+
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />' +
+      '<input id="post_author_attributes_id" name="post[author_attributes][id]" type="hidden" value="321" />'
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_with_an_existing_record_on_a_nested_attributes_one_to_one_association_with_disabled_hidden_id
+    @post.author = Author.new(321)
+
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author, :include_id => false) { |af|
+        af.text_field(:name)
+      }
+    end
+
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />'
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_with_an_existing_record_on_a_nested_attributes_one_to_one_association_with_disabled_hidden_id_inherited
+    @post.author = Author.new(321)
+
+    form_for(@post, :include_id => false) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author) { |af|
+        af.text_field(:name)
+      }
+    end
+
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />'
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_with_an_existing_record_on_a_nested_attributes_one_to_one_association_with_disabled_hidden_id_override
+    @post.author = Author.new(321)
+
+    form_for(@post, :include_id => false) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author, :include_id => true) { |af|
+        af.text_field(:name)
+      }
+    end
+
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />' +
+      '<input id="post_author_attributes_id" name="post[author_attributes][id]" type="hidden" value="321" />'
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_with_existing_records_on_a_nested_attributes_one_to_one_association_with_explicit_hidden_field_placement
+    @post.author = Author.new(321)
+
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author) { |af|
+        concat af.hidden_field(:id)
+        concat af.text_field(:name)
+      }
+    end
+
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_author_attributes_id" name="post[author_attributes][id]" type="hidden" value="321" />' +
+      '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />'
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association
+    @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
+
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      @post.comments.each do |comment|
+        concat f.fields_for(:comments, comment) { |cf|
+          concat cf.text_field(:name)
         }
       end
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />' +
-                  '<input id="post_author_attributes_id" name="post[author_attributes][id]" type="hidden" value="321" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />' +
+      '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
-  def test_nested_fields_for_with_existing_records_on_a_nested_attributes_one_to_one_association_with_explicit_hidden_field_placement
+  def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association_with_disabled_hidden_id
+    @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
     @post.author = Author.new(321)
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        concat f.fields_for(:author) { |af|
-          concat af.hidden_field(:id)
-          concat af.text_field(:name)
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author) { |af|
+        concat af.text_field(:name)
+      }
+      @post.comments.each do |comment|
+        concat f.fields_for(:comments, comment, :include_id => false) { |cf|
+          concat cf.text_field(:name)
         }
       end
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_author_attributes_id" name="post[author_attributes][id]" type="hidden" value="321" />' +
-                  '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />' +
+      '<input id="post_author_attributes_id" name="post[author_attributes][id]" type="hidden" value="321" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
-  def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association
+  def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association_with_disabled_hidden_id_inherited
+    @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
+    @post.author = Author.new(321)
+
+    form_for(@post, :include_id => false) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author) { |af|
+        concat af.text_field(:name)
+      }
+      @post.comments.each do |comment|
+        concat f.fields_for(:comments, comment) { |cf|
+          concat cf.text_field(:name)
+        }
+      end
+    end
+
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />'
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association_with_disabled_hidden_id_override
     @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
+    @post.author = Author.new(321)
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        @post.comments.each do |comment|
-          concat f.fields_for(:comments, comment) { |cf|
-            concat cf.text_field(:name)
-          }
-        end
+    form_for(@post, :include_id => false) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:author, :include_id => true) { |af|
+        concat af.text_field(:name)
+      }
+      @post.comments.each do |comment|
+        concat f.fields_for(:comments, comment) { |cf|
+          concat cf.text_field(:name)
+        }
       end
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
-                  '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
-                  '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />' +
-                  '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_author_attributes_name" name="post[author_attributes][name]" size="30" type="text" value="author #321" />' +
+      '<input id="post_author_attributes_id" name="post[author_attributes][id]" type="hidden" value="321" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />'
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association_using_erb_and_inline_block
+    @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
+
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      @post.comments.each do |comment|
+        concat f.fields_for(:comments, comment) { |cf|
+          cf.text_field(:name)
+        }
+      end
+    end
+
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />' +
+      '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1089,25 +1307,23 @@ class FormHelperTest < ActionView::TestCase
   def test_nested_fields_for_with_existing_records_on_a_nested_attributes_collection_association_with_explicit_hidden_field_placement
     @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        @post.comments.each do |comment|
-          concat f.fields_for(:comments, comment) { |cf|
-            concat cf.hidden_field(:id)
-            concat cf.text_field(:name)
-          }
-        end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      @post.comments.each do |comment|
+        concat f.fields_for(:comments, comment) { |cf|
+          concat cf.hidden_field(:id)
+          concat cf.text_field(:name)
+        }
       end
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
-                  '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
-                  '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />' +
-                  '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1115,22 +1331,20 @@ class FormHelperTest < ActionView::TestCase
   def test_nested_fields_for_with_new_records_on_a_nested_attributes_collection_association
     @post.comments = [Comment.new, Comment.new]
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        @post.comments.each do |comment|
-          concat f.fields_for(:comments, comment) { |cf|
-            concat cf.text_field(:name)
-          }
-        end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      @post.comments.each do |comment|
+        concat f.fields_for(:comments, comment) { |cf|
+          concat cf.text_field(:name)
+        }
       end
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="new comment" />' +
-                  '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="new comment" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="new comment" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="new comment" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1138,40 +1352,36 @@ class FormHelperTest < ActionView::TestCase
   def test_nested_fields_for_with_existing_and_new_records_on_a_nested_attributes_collection_association
     @post.comments = [Comment.new(321), Comment.new]
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        @post.comments.each do |comment|
-          concat f.fields_for(:comments, comment) { |cf|
-            concat cf.text_field(:name)
-          }
-        end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      @post.comments.each do |comment|
+        concat f.fields_for(:comments, comment) { |cf|
+          concat cf.text_field(:name)
+        }
       end
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #321" />' +
-                  '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="321" />' +
-                  '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="new comment" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #321" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="321" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="new comment" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_nested_fields_for_with_an_empty_supplied_attributes_collection
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        f.fields_for(:comments, []) do |cf|
-          concat cf.text_field(:name)
-        end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      f.fields_for(:comments, []) do |cf|
+        concat cf.text_field(:name)
       end
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1179,22 +1389,41 @@ class FormHelperTest < ActionView::TestCase
   def test_nested_fields_for_with_existing_records_on_a_supplied_nested_attributes_collection
     @post.comments = Array.new(2) { |id| Comment.new(id + 1) }
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        concat f.fields_for(:comments, @post.comments) { |cf|
-          concat cf.text_field(:name)
-        }
-      end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:comments, @post.comments) { |cf|
+        concat cf.text_field(:name)
+      }
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
-                  '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
-                  '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />' +
-                  '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />' +
+      '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />'
+    end
+
+    assert_dom_equal expected, output_buffer
+  end
+
+  def test_nested_fields_for_arel_like
+    @post.comments = ArelLike.new
+
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:comments, @post.comments) { |cf|
+        concat cf.text_field(:name)
+      }
+    end
+
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />' +
+      '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1203,22 +1432,20 @@ class FormHelperTest < ActionView::TestCase
     comments = Array.new(2) { |id| Comment.new(id + 1) }
     @post.comments = []
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        concat f.fields_for(:comments, comments) { |cf|
-          concat cf.text_field(:name)
-        }
-      end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:comments, comments) { |cf|
+        concat cf.text_field(:name)
+      }
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
-                  '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
-                  '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />' +
-                  '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #1" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="1" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="comment #2" />' +
+      '<input id="post_comments_attributes_1_id" name="post[comments_attributes][1][id]" type="hidden" value="2" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1227,22 +1454,20 @@ class FormHelperTest < ActionView::TestCase
     @post.comments = [Comment.new(321), Comment.new]
     yielded_comments = []
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        concat f.fields_for(:comments) { |cf|
-          concat cf.text_field(:name)
-          yielded_comments << cf.object
-        }
-      end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.fields_for(:comments) { |cf|
+        concat cf.text_field(:name)
+        yielded_comments << cf.object
+      }
     end
 
-    expected =  whole_form do
-                  '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
-                  '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #321" />' +
-                  '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="321" />' +
-                  '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="new comment" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input name="post[title]" size="30" type="text" id="post_title" value="Hello World" />' +
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #321" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="321" />' +
+      '<input id="post_comments_attributes_1_name" name="post[comments_attributes][1][name]" size="30" type="text" value="new comment" />'
+    end
 
     assert_dom_equal expected, output_buffer
     assert_equal yielded_comments, @post.comments
@@ -1251,18 +1476,16 @@ class FormHelperTest < ActionView::TestCase
   def test_nested_fields_for_with_child_index_option_override_on_a_nested_attributes_collection_association
     @post.comments = []
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.fields_for(:comments, Comment.new(321), :child_index => 'abc') { |cf|
-          concat cf.text_field(:name)
-        }
-      end
+    form_for(@post) do |f|
+      concat f.fields_for(:comments, Comment.new(321), :child_index => 'abc') { |cf|
+        concat cf.text_field(:name)
+      }
     end
 
-    expected =  whole_form do
-                  '<input id="post_comments_attributes_abc_name" name="post[comments_attributes][abc][name]" size="30" type="text" value="comment #321" />' +
-                  '<input id="post_comments_attributes_abc_id" name="post[comments_attributes][abc][id]" type="hidden" value="321" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input id="post_comments_attributes_abc_name" name="post[comments_attributes][abc][name]" size="30" type="text" value="comment #321" />' +
+      '<input id="post_comments_attributes_abc_id" name="post[comments_attributes][abc][id]" type="hidden" value="321" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1274,43 +1497,41 @@ class FormHelperTest < ActionView::TestCase
     @post.tags[0].relevances = []
     @post.tags[1].relevances = []
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.fields_for(:comments, @post.comments[0]) { |cf|
-          concat cf.text_field(:name)
-          concat cf.fields_for(:relevances, CommentRelevance.new(314)) { |crf|
-            concat crf.text_field(:value)
-          }
+    form_for(@post) do |f|
+      concat f.fields_for(:comments, @post.comments[0]) { |cf|
+        concat cf.text_field(:name)
+        concat cf.fields_for(:relevances, CommentRelevance.new(314)) { |crf|
+          concat crf.text_field(:value)
         }
-        concat f.fields_for(:tags, @post.tags[0]) { |tf|
-          concat tf.text_field(:value)
-          concat tf.fields_for(:relevances, TagRelevance.new(3141)) { |trf|
-            concat trf.text_field(:value)
-          }
+      }
+      concat f.fields_for(:tags, @post.tags[0]) { |tf|
+        concat tf.text_field(:value)
+        concat tf.fields_for(:relevances, TagRelevance.new(3141)) { |trf|
+          concat trf.text_field(:value)
         }
-        concat f.fields_for('tags', @post.tags[1]) { |tf|
-          concat tf.text_field(:value)
-          concat tf.fields_for(:relevances, TagRelevance.new(31415)) { |trf|
-            concat trf.text_field(:value)
-          }
+      }
+      concat f.fields_for('tags', @post.tags[1]) { |tf|
+        concat tf.text_field(:value)
+        concat tf.fields_for(:relevances, TagRelevance.new(31415)) { |trf|
+          concat trf.text_field(:value)
         }
-      end
+      }
     end
 
-    expected =  whole_form do
-                  '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #321" />' +
-                  '<input id="post_comments_attributes_0_relevances_attributes_0_value" name="post[comments_attributes][0][relevances_attributes][0][value]" size="30" type="text" value="commentrelevance #314" />' +
-                  '<input id="post_comments_attributes_0_relevances_attributes_0_id" name="post[comments_attributes][0][relevances_attributes][0][id]" type="hidden" value="314" />' +
-                  '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="321" />' +
-                  '<input id="post_tags_attributes_0_value" name="post[tags_attributes][0][value]" size="30" type="text" value="tag #123" />' +
-                  '<input id="post_tags_attributes_0_relevances_attributes_0_value" name="post[tags_attributes][0][relevances_attributes][0][value]" size="30" type="text" value="tagrelevance #3141" />' +
-                  '<input id="post_tags_attributes_0_relevances_attributes_0_id" name="post[tags_attributes][0][relevances_attributes][0][id]" type="hidden" value="3141" />' +
-                  '<input id="post_tags_attributes_0_id" name="post[tags_attributes][0][id]" type="hidden" value="123" />' +
-                  '<input id="post_tags_attributes_1_value" name="post[tags_attributes][1][value]" size="30" type="text" value="tag #456" />' +
-                  '<input id="post_tags_attributes_1_relevances_attributes_0_value" name="post[tags_attributes][1][relevances_attributes][0][value]" size="30" type="text" value="tagrelevance #31415" />' +
-                  '<input id="post_tags_attributes_1_relevances_attributes_0_id" name="post[tags_attributes][1][relevances_attributes][0][id]" type="hidden" value="31415" />' +
-                  '<input id="post_tags_attributes_1_id" name="post[tags_attributes][1][id]" type="hidden" value="456" />'
-                end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      '<input id="post_comments_attributes_0_name" name="post[comments_attributes][0][name]" size="30" type="text" value="comment #321" />' +
+      '<input id="post_comments_attributes_0_relevances_attributes_0_value" name="post[comments_attributes][0][relevances_attributes][0][value]" size="30" type="text" value="commentrelevance #314" />' +
+      '<input id="post_comments_attributes_0_relevances_attributes_0_id" name="post[comments_attributes][0][relevances_attributes][0][id]" type="hidden" value="314" />' +
+      '<input id="post_comments_attributes_0_id" name="post[comments_attributes][0][id]" type="hidden" value="321" />' +
+      '<input id="post_tags_attributes_0_value" name="post[tags_attributes][0][value]" size="30" type="text" value="tag #123" />' +
+      '<input id="post_tags_attributes_0_relevances_attributes_0_value" name="post[tags_attributes][0][relevances_attributes][0][value]" size="30" type="text" value="tagrelevance #3141" />' +
+      '<input id="post_tags_attributes_0_relevances_attributes_0_id" name="post[tags_attributes][0][relevances_attributes][0][id]" type="hidden" value="3141" />' +
+      '<input id="post_tags_attributes_0_id" name="post[tags_attributes][0][id]" type="hidden" value="123" />' +
+      '<input id="post_tags_attributes_1_value" name="post[tags_attributes][1][value]" size="30" type="text" value="tag #456" />' +
+      '<input id="post_tags_attributes_1_relevances_attributes_0_value" name="post[tags_attributes][1][relevances_attributes][0][value]" size="30" type="text" value="tagrelevance #31415" />' +
+      '<input id="post_tags_attributes_1_relevances_attributes_0_id" name="post[tags_attributes][1][relevances_attributes][0][id]" type="hidden" value="31415" />' +
+      '<input id="post_tags_attributes_1_id" name="post[tags_attributes][1][id]" type="hidden" value="456" />'
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1438,47 +1659,40 @@ class FormHelperTest < ActionView::TestCase
   end
 
   def test_form_for_and_fields_for
-    assert_deprecated do
-      form_for(:post, @post, :html => { :id => 'create-post' }) do |post_form|
-        concat post_form.text_field(:title)
-        concat post_form.text_area(:body)
+    form_for(@post, :as => :post, :html => { :id => 'create-post' }) do |post_form|
+      concat post_form.text_field(:title)
+      concat post_form.text_area(:body)
 
-        concat fields_for(:parent_post, @post) { |parent_fields|
-          concat parent_fields.check_box(:secret)
-        }
-      end
+      concat fields_for(:parent_post, @post) { |parent_fields|
+        concat parent_fields.check_box(:secret)
+      }
     end
 
-    expected =
-      "<form accept-charset='UTF-8' action='http://www.example.com' id='create-post' method='post'>" +
-      snowman +
+    expected = whole_form('/posts/123', 'create-post', 'post_edit', :method => 'put') do
       "<input name='post[title]' size='30' type='text' id='post_title' value='Hello World' />" +
       "<textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
       "<input name='parent_post[secret]' type='hidden' value='0' />" +
-      "<input name='parent_post[secret]' checked='checked' type='checkbox' id='parent_post_secret' value='1' />" +
-      "</form>"
+      "<input name='parent_post[secret]' checked='checked' type='checkbox' id='parent_post_secret' value='1' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_form_for_and_fields_for_with_object
-    assert_deprecated do
-      form_for(:post, @post, :html => { :id => 'create-post' }) do |post_form|
-        concat post_form.text_field(:title)
-        concat post_form.text_area(:body)
+    form_for(@post, :as => :post, :html => { :id => 'create-post' }) do |post_form|
+      concat post_form.text_field(:title)
+      concat post_form.text_area(:body)
 
-        concat post_form.fields_for(@comment) { |comment_fields|
-          concat comment_fields.text_field(:name)
-        }
-      end
+      concat post_form.fields_for(@comment) { |comment_fields|
+        concat comment_fields.text_field(:name)
+      }
     end
 
-    expected =
-      whole_form("http://www.example.com", "create-post") do
-        "<input name='post[title]' size='30' type='text' id='post_title' value='Hello World' />" +
-        "<textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
-        "<input name='post[comment][name]' type='text' id='post_comment_name' value='new comment' size='30' />"
-      end
+    expected = whole_form('/posts/123', 'create-post', 'post_edit', :method => 'put') do
+      "<input name='post[title]' size='30' type='text' id='post_title' value='Hello World' />" +
+      "<textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea>" +
+      "<input name='post[comment][name]' type='text' id='post_comment_name' value='new comment' size='30' />"
+    end
 
     assert_dom_equal expected, output_buffer
   end
@@ -1494,63 +1708,63 @@ class FormHelperTest < ActionView::TestCase
   end
 
   def test_form_for_with_labelled_builder
-    assert_deprecated do
-      form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
-        concat f.text_field(:title)
-        concat f.text_area(:body)
-        concat f.check_box(:secret)
-      end
+    form_for(@post, :builder => LabelledFormBuilder) do |f|
+      concat f.text_field(:title)
+      concat f.text_area(:body)
+      concat f.check_box(:secret)
     end
 
-    expected =  whole_form do
-        "<label for='title'>Title:</label> <input name='post[title]' size='30' type='text' id='post_title' value='Hello World' /><br/>" +
-        "<label for='body'>Body:</label> <textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea><br/>" +
-        "<label for='secret'>Secret:</label> <input name='post[secret]' type='hidden' value='0' /><input name='post[secret]' checked='checked' type='checkbox' id='post_secret' value='1' /><br/>"
-      end
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
+      "<label for='title'>Title:</label> <input name='post[title]' size='30' type='text' id='post_title' value='Hello World' /><br/>" +
+      "<label for='body'>Body:</label> <textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea><br/>" +
+      "<label for='secret'>Secret:</label> <input name='post[secret]' type='hidden' value='0' /><input name='post[secret]' checked='checked' type='checkbox' id='post_secret' value='1' /><br/>"
+    end
 
     assert_dom_equal expected, output_buffer
   end
 
   def snowman(method = nil)
     txt =  %{<div style="margin:0;padding:0;display:inline">}
-    txt << %{<input name="_e" type="hidden" value="&#9731;" />}
-    txt << %{<input name="_method" type="hidden" value="#{method}" />} if method
+    txt << %{<input name="utf8" type="hidden" value="&#x2713;" />}
+    if (method && !['get','post'].include?(method.to_s))
+      txt << %{<input name="_method" type="hidden" value="#{method}" />}
+    end
     txt << %{</div>}
   end
 
-  def form_text(action = "http://www.example.com", id = nil, html_class = nil, remote = nil)
+  def form_text(action = "/", id = nil, html_class = nil, remote = nil, multipart = nil, method = nil)
     txt =  %{<form accept-charset="UTF-8" action="#{action}"}
+    txt << %{ enctype="multipart/form-data"} if multipart
     txt << %{ data-remote="true"} if remote
     txt << %{ class="#{html_class}"} if html_class
     txt << %{ id="#{id}"} if id
-    txt << %{ method="post">}
+    method = method.to_s == "get" ? "get" : "post"
+    txt << %{ method="#{method}">}
   end
 
-  def whole_form(action = "http://www.example.com", id = nil, html_class = nil, options = nil)
+  def whole_form(action = "/", id = nil, html_class = nil, options = nil)
     contents = block_given? ? yield : ""
 
     if options.is_a?(Hash)
-      method, remote = options.values_at(:method, :remote)
+      method, remote, multipart = options.values_at(:method, :remote, :multipart)
     else
       method = options
     end
 
-    form_text(action, id, html_class, remote) + snowman(method) + contents + "</form>"
+    form_text(action, id, html_class, remote, multipart, method) + snowman(method) + contents + "</form>"
   end
 
   def test_default_form_builder
     old_default_form_builder, ActionView::Base.default_form_builder =
       ActionView::Base.default_form_builder, LabelledFormBuilder
 
-    assert_deprecated do
-      form_for(:post, @post) do |f|
-        concat f.text_field(:title)
-        concat f.text_area(:body)
-        concat f.check_box(:secret)
-      end
+    form_for(@post) do |f|
+      concat f.text_field(:title)
+      concat f.text_area(:body)
+      concat f.check_box(:secret)
     end
 
-    expected =  whole_form do
+    expected = whole_form('/posts/123', 'edit_post_123', 'edit_post', :method => 'put') do
       "<label for='title'>Title:</label> <input name='post[title]' size='30' type='text' id='post_title' value='Hello World' /><br/>" +
       "<label for='body'>Body:</label> <textarea name='post[body]' id='post_body' rows='20' cols='40'>Back to the hill and over it again!</textarea><br/>" +
       "<label for='secret'>Secret:</label> <input name='post[secret]' type='hidden' value='0' /><input name='post[secret]' checked='checked' type='checkbox' id='post_secret' value='1' /><br/>"
@@ -1579,12 +1793,10 @@ class FormHelperTest < ActionView::TestCase
   def test_form_for_with_labelled_builder_with_nested_fields_for_without_options_hash
     klass = nil
 
-    assert_deprecated do
-      form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
-        f.fields_for(:comments, Comment.new) do |nested_fields|
-          klass = nested_fields.class
-          ''
-        end
+    form_for(@post, :builder => LabelledFormBuilder) do |f|
+      f.fields_for(:comments, Comment.new) do |nested_fields|
+        klass = nested_fields.class
+        ''
       end
     end
 
@@ -1594,12 +1806,10 @@ class FormHelperTest < ActionView::TestCase
   def test_form_for_with_labelled_builder_with_nested_fields_for_with_options_hash
     klass = nil
 
-    assert_deprecated do
-      form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
-        f.fields_for(:comments, Comment.new, :index => 'foo') do |nested_fields|
-          klass = nested_fields.class
-          ''
-        end
+    form_for(@post, :builder => LabelledFormBuilder) do |f|
+      f.fields_for(:comments, Comment.new, :index => 'foo') do |nested_fields|
+        klass = nested_fields.class
+        ''
       end
     end
 
@@ -1611,12 +1821,10 @@ class FormHelperTest < ActionView::TestCase
   def test_form_for_with_labelled_builder_with_nested_fields_for_with_custom_builder
     klass = nil
 
-    assert_deprecated do
-      form_for(:post, @post, :builder => LabelledFormBuilder) do |f|
-        f.fields_for(:comments, Comment.new, :builder => LabelledFormBuilderSubclass) do |nested_fields|
-          klass = nested_fields.class
-          ''
-        end
+    form_for(@post, :builder => LabelledFormBuilder) do |f|
+      f.fields_for(:comments, Comment.new, :builder => LabelledFormBuilderSubclass) do |nested_fields|
+        klass = nested_fields.class
+        ''
       end
     end
 
@@ -1624,39 +1832,29 @@ class FormHelperTest < ActionView::TestCase
   end
 
   def test_form_for_with_html_options_adds_options_to_form_tag
-    assert_deprecated do
-      form_for(:post, @post, :html => {:id => 'some_form', :class => 'some_class'}) do |f| end
-    end
-    expected = whole_form("http://www.example.com", "some_form", "some_class")
+    form_for(@post, :html => {:id => 'some_form', :class => 'some_class'}) do |f| end
+    expected = whole_form("/posts/123", "some_form", "some_class", 'put')
 
     assert_dom_equal expected, output_buffer
   end
 
   def test_form_for_with_string_url_option
-    assert_deprecated do
-      form_for(:post, @post, :url => 'http://www.otherdomain.com') do |f| end
-    end
+    form_for(@post, :url => 'http://www.otherdomain.com') do |f| end
 
-    assert_equal whole_form("http://www.otherdomain.com"), output_buffer
-    # assert_equal '<form action="http://www.otherdomain.com" method="post"></form>', output_buffer
+    assert_equal whole_form("http://www.otherdomain.com", 'edit_post_123', 'edit_post', 'put'), output_buffer
   end
 
   def test_form_for_with_hash_url_option
-    assert_deprecated do
-      form_for(:post, @post, :url => {:controller => 'controller', :action => 'action'}) do |f| end
-    end
+    form_for(@post, :url => {:controller => 'controller', :action => 'action'}) do |f| end
 
     assert_equal 'controller', @url_for_options[:controller]
     assert_equal 'action', @url_for_options[:action]
   end
 
   def test_form_for_with_record_url_option
-    assert_deprecated do
-      form_for(:post, @post, :url => @post) do |f| end
-    end
+    form_for(@post, :url => @post) do |f| end
 
-    expected = whole_form("/posts/123")
-    # expected = "<form action=\"/posts/123\" method=\"post\"></form>"
+    expected = whole_form("/posts/123", 'edit_post_123', 'edit_post', 'put')
     assert_equal expected, output_buffer
   end
 
@@ -1682,14 +1880,14 @@ class FormHelperTest < ActionView::TestCase
     @comment.save
     form_for([@post, @comment]) {}
 
-    expected = whole_form(comment_path(@post, @comment), "edit_comment_1", "edit_comment", "put")
+    expected = whole_form(post_comment_path(@post, @comment), "edit_comment_1", "edit_comment", "put")
     assert_dom_equal expected, output_buffer
   end
 
   def test_form_for_with_new_object_in_list
     form_for([@post, @comment]) {}
 
-    expected = whole_form(comments_path(@post), "new_comment", "new_comment")
+    expected = whole_form(post_comments_path(@post), "new_comment", "new_comment")
     assert_dom_equal expected, output_buffer
   end
 
@@ -1697,14 +1895,14 @@ class FormHelperTest < ActionView::TestCase
     @comment.save
     form_for([:admin, @post, @comment]) {}
 
-    expected = whole_form(admin_comment_path(@post, @comment), "edit_comment_1", "edit_comment", "put")
+    expected = whole_form(admin_post_comment_path(@post, @comment), "edit_comment_1", "edit_comment", "put")
     assert_dom_equal expected, output_buffer
   end
 
   def test_form_for_with_new_object_and_namespace_in_list
     form_for([:admin, @post, @comment]) {}
 
-    expected = whole_form(admin_comments_path(@post), "new_comment", "new_comment")
+    expected = whole_form(admin_post_comments_path(@post), "new_comment", "new_comment")
     assert_dom_equal expected, output_buffer
   end
 
@@ -1721,35 +1919,8 @@ class FormHelperTest < ActionView::TestCase
   end
 
   protected
-    def comments_path(post)
-      "/posts/#{post.id}/comments"
-    end
-    alias_method :post_comments_path, :comments_path
-
-    def comment_path(post, comment)
-      "/posts/#{post.id}/comments/#{comment.id}"
-    end
-    alias_method :post_comment_path, :comment_path
-
-    def admin_comments_path(post)
-      "/admin/posts/#{post.id}/comments"
-    end
-    alias_method :admin_post_comments_path, :admin_comments_path
-
-    def admin_comment_path(post, comment)
-      "/admin/posts/#{post.id}/comments/#{comment.id}"
-    end
-    alias_method :admin_post_comment_path, :admin_comment_path
-
-    def posts_path
-      "/posts"
-    end
-
-    def post_path(post)
-      "/posts/#{post.id}"
-    end
-
     def protect_against_forgery?
       false
     end
+
 end
diff --git a/actionpack/test/template/form_options_helper_test.rb b/actionpack/test/template/form_options_helper_test.rb
index d14e5020c7..93ff7ba0fd 100644
--- a/actionpack/test/template/form_options_helper_test.rb
+++ b/actionpack/test/template/form_options_helper_test.rb
@@ -1,13 +1,19 @@
 require 'abstract_unit'
 require 'tzinfo'
 
+class Map < Hash
+  def category
+    "<mus>"
+  end
+end
+
 TZInfo::Timezone.cattr_reader :loaded_zones
 
 class FormOptionsHelperTest < ActionView::TestCase
   tests ActionView::Helpers::FormOptionsHelper
 
   silence_warnings do
-    Post        = Struct.new('Post', :title, :author_name, :body, :secret, :written_on, :category, :origin)
+    Post        = Struct.new('Post', :title, :author_name, :body, :secret, :written_on, :category, :origin, :allow_comments)
     Continent   = Struct.new('Continent', :continent_name, :countries)
     Country     = Struct.new('Country', :country_id, :country_name)
     Firm        = Struct.new('Firm', :time_zone)
@@ -130,6 +136,13 @@ class FormOptionsHelperTest < ActionView::TestCase
     )
   end
 
+  def test_boolean_array_options_for_select_with_selection_and_disabled_value
+    assert_dom_equal(
+      "<option value=\"true\">true</option>\n<option value=\"false\" selected=\"selected\">false</option>",
+      options_for_select([ true, false ], :selected => false, :disabled => nil)
+    )
+  end
+
   def test_array_options_for_string_include_in_other_string_bug_fix
       assert_dom_equal(
         "<option value=\"ruby\">ruby</option>\n<option value=\"rubyonrails\" selected=\"selected\">rubyonrails</option>",
@@ -176,6 +189,68 @@ class FormOptionsHelperTest < ActionView::TestCase
     )
   end
 
+  def test_collection_options_with_preselected_value_as_string_and_option_value_is_integer
+    albums = [ Album.new(1, "first","rap"), Album.new(2, "second","pop")]
+    assert_dom_equal(
+    %(<option selected="selected" value="1">rap</option>\n<option value="2">pop</option>),
+    options_from_collection_for_select(albums, "id", "genre", :selected => "1")
+    )
+  end
+
+  def test_collection_options_with_preselected_value_as_integer_and_option_value_is_string
+    albums = [ Album.new("1", "first","rap"), Album.new("2", "second","pop")]
+
+    assert_dom_equal(
+    %(<option selected="selected" value="1">rap</option>\n<option value="2">pop</option>),
+    options_from_collection_for_select(albums, "id", "genre", :selected => 1)
+    )
+  end
+
+  def test_collection_options_with_preselected_value_as_string_and_option_value_is_float
+    albums = [ Album.new(1.0, "first","rap"), Album.new(2.0, "second","pop")]
+
+    assert_dom_equal(
+    %(<option value="1.0">rap</option>\n<option value="2.0" selected="selected">pop</option>),
+    options_from_collection_for_select(albums, "id", "genre", :selected => "2.0")
+    )
+  end
+
+  def test_collection_options_with_preselected_value_as_nil
+    albums = [ Album.new(1.0, "first","rap"), Album.new(2.0, "second","pop")]
+
+    assert_dom_equal(
+    %(<option value="1.0">rap</option>\n<option value="2.0">pop</option>),
+    options_from_collection_for_select(albums, "id", "genre", :selected => nil)
+    )
+  end
+
+  def test_collection_options_with_disabled_value_as_nil
+    albums = [ Album.new(1.0, "first","rap"), Album.new(2.0, "second","pop")]
+
+    assert_dom_equal(
+    %(<option value="1.0">rap</option>\n<option value="2.0">pop</option>),
+    options_from_collection_for_select(albums, "id", "genre", :disabled => nil)
+    )
+  end
+
+  def test_collection_options_with_disabled_value_as_array
+    albums = [ Album.new(1.0, "first","rap"), Album.new(2.0, "second","pop")]
+
+    assert_dom_equal(
+    %(<option disabled="disabled" value="1.0">rap</option>\n<option disabled="disabled" value="2.0">pop</option>),
+    options_from_collection_for_select(albums, "id", "genre", :disabled => ["1.0", 2.0])
+    )
+  end
+
+  def test_collection_options_with_preselected_values_as_string_array_and_option_value_is_float
+    albums = [ Album.new(1.0, "first","rap"), Album.new(2.0, "second","pop"), Album.new(3.0, "third","country") ]
+
+    assert_dom_equal(
+    %(<option value="1.0" selected="selected">rap</option>\n<option value="2.0">pop</option>\n<option value="3.0" selected="selected">country</option>),
+    options_from_collection_for_select(albums, "id", "genre", ["1.0","3.0"])
+    )
+  end
+
   def test_option_groups_from_collection_for_select
     assert_dom_equal(
       "<optgroup label=\"&lt;Africa&gt;\"><option value=\"&lt;sa&gt;\">&lt;South Africa&gt;</option>\n<option value=\"so\">Somalia</option></optgroup><optgroup label=\"Europe\"><option value=\"dk\" selected=\"selected\">Denmark</option>\n<option value=\"ie\">Ireland</option></optgroup>",
@@ -289,6 +364,10 @@ class FormOptionsHelperTest < ActionView::TestCase
                  opts
   end
 
+  def test_time_zone_options_returns_html_safe_string
+    assert time_zone_options_for_select.html_safe?
+  end
+
   def test_select
     @post = Post.new
     @post.category = "<mus>"
@@ -298,6 +377,15 @@ class FormOptionsHelperTest < ActionView::TestCase
     )
   end
 
+  def test_select_with_boolean_method
+    @post = Post.new
+    @post.allow_comments = false
+    assert_dom_equal(
+      "<select id=\"post_allow_comments\" name=\"post[allow_comments]\"><option value=\"true\">true</option>\n<option value=\"false\" selected=\"selected\">false</option></select>",
+      select("post", "allow_comments", %w( true false ))
+    )
+  end
+
   def test_select_under_fields_for
     @post = Post.new
     @post.category = "<mus>"
@@ -305,13 +393,26 @@ class FormOptionsHelperTest < ActionView::TestCase
     output_buffer = fields_for :post, @post do |f|
       concat f.select(:category, %w( abe <mus> hest))
     end
-  
+
     assert_dom_equal(
       "<select id=\"post_category\" name=\"post[category]\"><option value=\"abe\">abe</option>\n<option value=\"&lt;mus&gt;\" selected=\"selected\">&lt;mus&gt;</option>\n<option value=\"hest\">hest</option></select>",
       output_buffer
     )
   end
 
+  def test_fields_for_with_record_inherited_from_hash
+    map = Map.new
+
+    output_buffer = fields_for :map, map do |f|
+      concat f.select(:category, %w( abe <mus> hest))
+    end
+
+    assert_dom_equal(
+      "<select id=\"map_category\" name=\"map[category]\"><option value=\"abe\">abe</option>\n<option value=\"&lt;mus&gt;\" selected=\"selected\">&lt;mus&gt;</option>\n<option value=\"hest\">hest</option></select>",
+      output_buffer
+    )
+  end
+
   def test_select_under_fields_for_with_index
     @post = Post.new
     @post.category = "<mus>"
@@ -438,11 +539,11 @@ class FormOptionsHelperTest < ActionView::TestCase
   def test_select_with_index_option
     @album = Album.new
     @album.id = 1
-  
-    expected = "<select id=\"album__genre\" name=\"album[][genre]\"><option value=\"rap\">rap</option>\n<option value=\"rock\">rock</option>\n<option value=\"country\">country</option></select>"    
+
+    expected = "<select id=\"album__genre\" name=\"album[][genre]\"><option value=\"rap\">rap</option>\n<option value=\"rock\">rock</option>\n<option value=\"country\">country</option></select>"
 
     assert_dom_equal(
-      expected, 
+      expected,
       select("album[]", "genre", %w[rap rock country], {}, { :index => nil })
     )
   end
@@ -491,7 +592,7 @@ class FormOptionsHelperTest < ActionView::TestCase
     output_buffer = fields_for :post, @post do |f|
       concat f.collection_select(:author_name, dummy_posts, :author_name, :author_name)
     end
-  
+
     assert_dom_equal(
       "<select id=\"post_author_name\" name=\"post[author_name]\"><option value=\"&lt;Abe&gt;\">&lt;Abe&gt;</option>\n<option value=\"Babe\" selected=\"selected\">Babe</option>\n<option value=\"Cabe\">Cabe</option></select>",
       output_buffer
@@ -599,7 +700,7 @@ class FormOptionsHelperTest < ActionView::TestCase
     output_buffer = fields_for :firm, @firm do |f|
       concat f.time_zone_select(:time_zone)
     end
-  
+
     assert_dom_equal(
       "<select id=\"firm_time_zone\" name=\"firm[time_zone]\">" +
       "<option value=\"A\">A</option>\n" +
diff --git a/actionpack/test/template/form_tag_helper_test.rb b/actionpack/test/template/form_tag_helper_test.rb
index 6c85952d40..f8671f2980 100644
--- a/actionpack/test/template/form_tag_helper_test.rb
+++ b/actionpack/test/template/form_tag_helper_test.rb
@@ -12,20 +12,24 @@ class FormTagHelperTest < ActionView::TestCase
     method = options[:method]
 
     txt =  %{<div style="margin:0;padding:0;display:inline">}
-    txt << %{<input name="_e" type="hidden" value="&#9731;" />}
-    txt << %{<input name="_method" type="hidden" value="#{method}" />} if method
+    txt << %{<input name="utf8" type="hidden" value="&#x2713;" />}
+    if (method && !['get','post'].include?(method.to_s))
+      txt << %{<input name="_method" type="hidden" value="#{method}" />}
+    end
     txt << %{</div>}
   end
 
   def form_text(action = "http://www.example.com", options = {})
-    remote, enctype, html_class, id = options.values_at(:remote, :enctype, :html_class, :id)
+    remote, enctype, html_class, id, method = options.values_at(:remote, :enctype, :html_class, :id, :method)
+
+    method = method.to_s == "get" ? "get" : "post"
 
     txt =  %{<form accept-charset="UTF-8" action="#{action}"}
     txt << %{ enctype="multipart/form-data"} if enctype
     txt << %{ data-remote="true"} if remote
     txt << %{ class="#{html_class}"} if html_class
     txt << %{ id="#{id}"} if id
-    txt << %{ method="post">}
+    txt << %{ method="#{method}">}
   end
 
   def whole_form(action = "http://www.example.com", options = {})
@@ -201,12 +205,6 @@ class FormTagHelperTest < ActionView::TestCase
     assert_dom_equal expected, actual
   end
 
-  def test_select_tag_with_array_options
-    assert_deprecated /array/ do
-      select_tag "people", ["<option>david</option>"]
-    end
-  end
-
   def test_text_area_tag_size_string
     actual = text_area_tag "body", "hello world", "size" => "20x40"
     expected = %(<textarea cols="20" id="body" name="body" rows="40">hello world</textarea>)
@@ -387,6 +385,57 @@ class FormTagHelperTest < ActionView::TestCase
     )
   end
 
+  def test_button_tag
+    assert_dom_equal(
+      %(<button name="button" type="submit">Button</button>),
+      button_tag
+    )
+  end
+
+  def test_button_tag_with_submit_type
+    assert_dom_equal(
+      %(<button name="button" type="submit">Save</button>),
+      button_tag("Save", :type => "submit")
+    )
+  end
+
+  def test_button_tag_with_button_type
+    assert_dom_equal(
+      %(<button name="button" type="button">Button</button>),
+      button_tag("Button", :type => "button")
+    )
+  end
+
+  def test_button_tag_with_reset_type
+    assert_dom_equal(
+      %(<button name="button" type="reset">Reset</button>),
+      button_tag("Reset", :type => "reset")
+    )
+  end
+
+  def test_button_tag_with_disabled_option
+    assert_dom_equal(
+      %(<button name="button" type="reset" disabled="disabled">Reset</button>),
+      button_tag("Reset", :type => "reset", :disabled => true)
+    )
+  end
+
+  def test_button_tag_escape_content
+    assert_dom_equal(
+      %(<button name="button" type="reset" disabled="disabled">&lt;b&gt;Reset&lt;/b&gt;</button>),
+      button_tag("<b>Reset</b>", :type => "reset", :disabled => true)
+    )
+  end
+
+  def test_button_tag_with_block
+    assert_dom_equal('<button name="button" type="submit">Content</button>', button_tag { 'Content' })
+  end
+
+  def test_button_tag_with_block_and_options
+    output = button_tag(:name => 'temptation', :type => 'button') { content_tag(:strong, 'Do not press me') }
+    assert_dom_equal('<button name="temptation" type="button"><strong>Do not press me</strong></button>', output)
+  end
+
   def test_image_submit_tag_with_confirmation
     assert_dom_equal(
       %(<input type="image" src="/images/save.gif" data-confirm="Are you sure?" />),
diff --git a/actionpack/test/template/html-scanner/document_test.rb b/actionpack/test/template/html-scanner/document_test.rb
index c68f04fa75..ddfb351595 100644
--- a/actionpack/test/template/html-scanner/document_test.rb
+++ b/actionpack/test/template/html-scanner/document_test.rb
@@ -15,7 +15,7 @@ class DocumentTest < Test::Unit::TestCase
     assert_match %r{\s+}m, doc.root.children[1].content
     assert_equal "html", doc.root.children[2].name
   end
-  
+
   def test_find_img
     doc = HTML::Document.new <<-HTML.strip
       <html>
diff --git a/actionpack/test/template/html-scanner/node_test.rb b/actionpack/test/template/html-scanner/node_test.rb
index b0df36877e..f4b9b198e8 100644
--- a/actionpack/test/template/html-scanner/node_test.rb
+++ b/actionpack/test/template/html-scanner/node_test.rb
@@ -1,39 +1,39 @@
 require 'abstract_unit'
 
 class NodeTest < Test::Unit::TestCase
-  
+
   class MockNode
     def initialize(matched, value)
       @matched = matched
       @value = value
     end
-    
+
     def find(conditions)
       @matched && self
     end
-    
+
     def to_s
       @value.to_s
     end
   end
-  
+
   def setup
     @node = HTML::Node.new("parent")
     @node.children.concat [MockNode.new(false,1), MockNode.new(true,"two"), MockNode.new(false,:three)]
   end
-  
+
   def test_match
     assert !@node.match("foo")
   end
-  
+
   def test_tag
     assert !@node.tag?
   end
-  
+
   def test_to_s
     assert_equal "1twothree", @node.to_s
   end
-  
+
   def test_find
     assert_equal "two", @node.find('blah').to_s
   end
@@ -58,7 +58,7 @@ class NodeTest < Test::Unit::TestCase
     assert node.attributes.has_key?("bar")
     assert "<b foo bar>", node.to_s
   end
-  
+
   def test_parse_with_unclosed_tag
     s = "<span onmouseover='bang'"
     node = nil
diff --git a/actionpack/test/template/html-scanner/sanitizer_test.rb b/actionpack/test/template/html-scanner/sanitizer_test.rb
index c9edde8892..fcc3782f04 100644
--- a/actionpack/test/template/html-scanner/sanitizer_test.rb
+++ b/actionpack/test/template/html-scanner/sanitizer_test.rb
@@ -24,11 +24,11 @@ class SanitizerTest < ActionController::TestCase
 
   def test_strip_links
     sanitizer = HTML::LinkSanitizer.new
-    assert_equal "Dont touch me", sanitizer.sanitize("Dont touch me")    
+    assert_equal "Dont touch me", sanitizer.sanitize("Dont touch me")
     assert_equal "on my mind\nall day long", sanitizer.sanitize("<a href='almost'>on my mind</a>\n<A href='almost'>all day long</A>")
-    assert_equal "0wn3d", sanitizer.sanitize("<a href='http://www.rubyonrails.com/'><a href='http://www.rubyonrails.com/' onlclick='steal()'>0wn3d</a></a>") 
-    assert_equal "Magic", sanitizer.sanitize("<a href='http://www.rubyonrails.com/'>Mag<a href='http://www.ruby-lang.org/'>ic") 
-    assert_equal "FrrFox", sanitizer.sanitize("<href onlclick='steal()'>FrrFox</a></href>") 
+    assert_equal "0wn3d", sanitizer.sanitize("<a href='http://www.rubyonrails.com/'><a href='http://www.rubyonrails.com/' onlclick='steal()'>0wn3d</a></a>")
+    assert_equal "Magic", sanitizer.sanitize("<a href='http://www.rubyonrails.com/'>Mag<a href='http://www.ruby-lang.org/'>ic")
+    assert_equal "FrrFox", sanitizer.sanitize("<href onlclick='steal()'>FrrFox</a></href>")
     assert_equal "My mind\nall <b>day</b> long", sanitizer.sanitize("<a href='almost'>My mind</a>\n<A href='almost'>all <b>day</b> long</A>")
     assert_equal "all <b>day</b> long", sanitizer.sanitize("<<a>a href='hello'>all <b>day</b> long<</A>/a>")
 
@@ -58,7 +58,7 @@ class SanitizerTest < ActionController::TestCase
     raw = %{href="javascript:bang" <a href="javascript:bang" name="hello">foo</a>, <span href="javascript:bang">bar</span>}
     assert_sanitized raw, %{href="javascript:bang" <a name="hello">foo</a>, <span>bar</span>}
   end
-  
+
   def test_sanitize_image_src
     raw = %{src="javascript:bang" <img src="javascript:bang" width="5">foo</img>, <span src="javascript:bang">bar</span>}
     assert_sanitized raw, %{src="javascript:bang" <img width="5">foo</img>, <span>bar</span>}
@@ -130,6 +130,13 @@ class SanitizerTest < ActionController::TestCase
       assert sanitizer.send(:contains_bad_protocols?, 'src', "#{proto}://bad")
     end
   end
+  
+  def test_should_accept_good_protocols_ignoring_case
+    sanitizer = HTML::WhiteListSanitizer.new
+    HTML::WhiteListSanitizer.allowed_protocols.each do |proto|
+      assert !sanitizer.send(:contains_bad_protocols?, 'src', "#{proto.capitalize}://good")
+    end
+  end
 
   def test_should_accept_good_protocols
     sanitizer = HTML::WhiteListSanitizer.new
@@ -147,9 +154,9 @@ class SanitizerTest < ActionController::TestCase
     assert_sanitized %(<SCRIPT\nSRC=http://ha.ckers.org/xss.js></SCRIPT>), ""
   end
 
-  [%(<IMG SRC="javascript:alert('XSS');">), 
-   %(<IMG SRC=javascript:alert('XSS')>), 
-   %(<IMG SRC=JaVaScRiPt:alert('XSS')>), 
+  [%(<IMG SRC="javascript:alert('XSS');">),
+   %(<IMG SRC=javascript:alert('XSS')>),
+   %(<IMG SRC=JaVaScRiPt:alert('XSS')>),
    %(<IMG """><SCRIPT>alert("XSS")</SCRIPT>">),
    %(<IMG SRC=javascript:alert(&quot;XSS&quot;)>),
    %(<IMG SRC=javascript:alert(String.fromCharCode(88,83,83))>),
@@ -166,28 +173,28 @@ class SanitizerTest < ActionController::TestCase
       assert_sanitized img_hack, "<img>"
     end
   end
-  
+
   def test_should_sanitize_tag_broken_up_by_null
     assert_sanitized %(<SCR\0IPT>alert(\"XSS\")</SCR\0IPT>), "alert(\"XSS\")"
   end
-  
+
   def test_should_sanitize_invalid_script_tag
     assert_sanitized %(<SCRIPT/XSS SRC="http://ha.ckers.org/xss.js"></SCRIPT>), ""
   end
-  
+
   def test_should_sanitize_script_tag_with_multiple_open_brackets
     assert_sanitized %(<<SCRIPT>alert("XSS");//<</SCRIPT>), "&lt;"
     assert_sanitized %(<iframe src=http://ha.ckers.org/scriptlet.html\n<a), %(&lt;a)
   end
-  
+
   def test_should_sanitize_unclosed_script
     assert_sanitized %(<SCRIPT SRC=http://ha.ckers.org/xss.js?<B>), "<b>"
   end
-  
+
   def test_should_sanitize_half_open_scripts
     assert_sanitized %(<IMG SRC="javascript:alert('XSS')"), "<img>"
   end
-  
+
   def test_should_not_fall_for_ridiculous_hack
     img_hack = %(<IMG\nSRC\n=\n"\nj\na\nv\na\ns\nc\nr\ni\np\nt\n:\na\nl\ne\nr\nt\n(\n'\nX\nS\nS\n'\n)\n"\n>)
     assert_sanitized img_hack, "<img>"
@@ -214,15 +221,15 @@ class SanitizerTest < ActionController::TestCase
     raw = %(-moz-binding:url('http://ha.ckers.org/xssmoz.xml#xss'))
     assert_equal '', sanitize_css(raw)
   end
-  
+
   def test_should_sanitize_invalid_tag_names
     assert_sanitized(%(a b c<script/XSS src="http://ha.ckers.org/xss.js"></script>d e f), "a b cd e f")
   end
-  
+
   def test_should_sanitize_non_alpha_and_non_digit_characters_in_tags
     assert_sanitized('<a onclick!#$%&()*~+-_.,:;?@[/|\]^`=alert("XSS")>foo</a>', "<a>foo</a>")
   end
-  
+
   def test_should_sanitize_invalid_tag_names_in_single_tags
     assert_sanitized('<img/src="http://ha.ckers.org/xss.js"/>', "<img />")
   end
diff --git a/actionpack/test/template/html-scanner/tag_node_test.rb b/actionpack/test/template/html-scanner/tag_node_test.rb
index d1d4667378..0d87f1bd42 100644
--- a/actionpack/test/template/html-scanner/tag_node_test.rb
+++ b/actionpack/test/template/html-scanner/tag_node_test.rb
@@ -7,7 +7,7 @@ class TagNodeTest < Test::Unit::TestCase
     assert_equal Hash.new, node.attributes
     assert_nil node.closing
   end
-  
+
   def test_open_with_attributes
     node = tag("<TAG1 foo=hey_ho x:bar=\"blah blah\" BAZ='blah blah blah' >")
     assert_equal "tag1", node.name
@@ -15,28 +15,28 @@ class TagNodeTest < Test::Unit::TestCase
     assert_equal "blah blah", node["x:bar"]
     assert_equal "blah blah blah", node["baz"]
   end
-  
+
   def test_self_closing_without_attributes
     node = tag("<tag/>")
     assert_equal "tag", node.name
     assert_equal Hash.new, node.attributes
     assert_equal :self, node.closing
   end
-  
+
   def test_self_closing_with_attributes
     node = tag("<tag a=b/>")
     assert_equal "tag", node.name
     assert_equal( { "a" => "b" }, node.attributes )
     assert_equal :self, node.closing
   end
-  
+
   def test_closing_without_attributes
     node = tag("</tag>")
     assert_equal "tag", node.name
     assert_nil node.attributes
     assert_equal :close, node.closing
   end
-  
+
   def test_bracket_op_when_no_attributes
     node = tag("</tag>")
     assert_nil node["foo"]
@@ -46,27 +46,27 @@ class TagNodeTest < Test::Unit::TestCase
     node = tag("<tag a=b/>")
     assert_equal "b", node["a"]
   end
-  
+
   def test_attributes_with_escaped_quotes
     node = tag("<tag a='b\\'c' b=\"bob \\\"float\\\"\">")
     assert_equal "b\\'c", node["a"]
     assert_equal "bob \\\"float\\\"", node["b"]
   end
-  
+
   def test_to_s
     node = tag("<a b=c d='f' g=\"h 'i'\" />")
-    assert_equal %(<a b='c' d='f' g='h \\'i\\'' />), node.to_s
+    assert_equal %(<a b="c" d="f" g="h 'i'" />), node.to_s
   end
-  
+
   def test_tag
     assert tag("<tag>").tag?
   end
-  
+
   def test_match_tag_as_string
     assert tag("<tag>").match(:tag => "tag")
     assert !tag("<tag>").match(:tag => "b")
   end
-  
+
   def test_match_tag_as_regexp
     assert tag("<tag>").match(:tag => /t.g/)
     assert !tag("<tag>").match(:tag => /t[bqs]g/)
@@ -77,45 +77,45 @@ class TagNodeTest < Test::Unit::TestCase
     assert t.match(:attributes => {"a" => "something"})
     assert t.match(:attributes => {"b" => "else"})
   end
-  
+
   def test_match_attributes_as_regexp
     t = tag("<tag a=something b=else />")
     assert t.match(:attributes => {"a" => /^something$/})
     assert t.match(:attributes => {"b" =>  /e.*e/})
     assert t.match(:attributes => {"a" => /me..i/, "b" => /.ls.$/})
   end
-  
+
   def test_match_attributes_as_number
     t = tag("<tag a=15 b=3.1415 />")
     assert t.match(:attributes => {"a" => 15})
     assert t.match(:attributes => {"b" => 3.1415})
     assert t.match(:attributes => {"a" => 15, "b" => 3.1415})
   end
-  
+
   def test_match_attributes_exist
     t = tag("<tag a=15 b=3.1415 />")
     assert t.match(:attributes => {"a" => true})
     assert t.match(:attributes => {"b" => true})
     assert t.match(:attributes => {"a" => true, "b" => true})
   end
-  
+
   def test_match_attributes_not_exist
     t = tag("<tag a=15 b=3.1415 />")
     assert t.match(:attributes => {"c" => false})
     assert t.match(:attributes => {"c" => nil})
     assert t.match(:attributes => {"a" => true, "c" => false})
   end
-  
+
   def test_match_parent_success
     t = tag("<tag a=15 b='hello'>", tag("<foo k='value'>"))
     assert t.match(:parent => {:tag => "foo", :attributes => {"k" => /v.l/, "j" => false}})
   end
-  
+
   def test_match_parent_fail
     t = tag("<tag a=15 b='hello'>", tag("<foo k='value'>"))
     assert !t.match(:parent => {:tag => /kafka/})
   end
-  
+
   def test_match_child_success
     t = tag("<tag x:k='something'>")
     tag("<child v=john a=kelly>", t)
@@ -123,7 +123,7 @@ class TagNodeTest < Test::Unit::TestCase
     assert t.match(:child => { :tag => "sib", :attributes => {"v" => /j/}})
     assert t.match(:child => { :attributes => {"a" => "kelly"}})
   end
-  
+
   def test_match_child_fail
     t = tag("<tag x:k='something'>")
     tag("<child v=john a=kelly>", t)
@@ -131,13 +131,13 @@ class TagNodeTest < Test::Unit::TestCase
     assert !t.match(:child => { :tag => "sib", :attributes => {"v" => /r/}})
     assert !t.match(:child => { :attributes => {"v" => false}})
   end
-  
+
   def test_match_ancestor_success
     t = tag("<tag x:k='something'>", tag("<parent v=john a=kelly>", tag("<grandparent m=vaughn v=james>")))
     assert t.match(:ancestor => {:tag => "parent", :attributes => {"a" => /ll/}})
     assert t.match(:ancestor => {:attributes => {"m" => "vaughn"}})
   end
-  
+
   def test_match_ancestor_fail
     t = tag("<tag x:k='something'>", tag("<parent v=john a=kelly>", tag("<grandparent m=vaughn v=james>")))
     assert !t.match(:ancestor => {:tag => /^parent/, :attributes => {"v" => /m/}})
@@ -149,13 +149,13 @@ class TagNodeTest < Test::Unit::TestCase
     assert t.match(:descendant => {:tag => "child", :attributes => {"a" => /ll/}})
     assert t.match(:descendant => {:attributes => {"m" => "vaughn"}})
   end
-  
+
   def test_match_descendant_fail
     tag("<grandchild m=vaughn v=james>", tag("<child v=john a=kelly>", t = tag("<tag x:k='something'>")))
     assert !t.match(:descendant => {:tag => /^child/, :attributes => {"v" => /m/}})
     assert !t.match(:descendant => {:attributes => {"v" => false}})
   end
-  
+
   def test_match_child_count
     t = tag("<tag x:k='something'>")
     tag("hello", t)
@@ -221,7 +221,7 @@ class TagNodeTest < Test::Unit::TestCase
     assert !m.match(:after => {:tag => "span", :attributes => {:k => true}})
   end
 
-  def test_to_s
+  def test_tag_to_s
     t = tag("<b x='foo'>")
     tag("hello", t)
     tag("<hr />", t)
@@ -229,7 +229,7 @@ class TagNodeTest < Test::Unit::TestCase
   end
 
   private
-  
+
     def tag(content, parent=nil)
       node = HTML::Node.parse(parent,0,0,content)
       parent.children << node if parent
diff --git a/actionpack/test/template/html-scanner/text_node_test.rb b/actionpack/test/template/html-scanner/text_node_test.rb
index 1ab3f4454e..6f61253ffa 100644
--- a/actionpack/test/template/html-scanner/text_node_test.rb
+++ b/actionpack/test/template/html-scanner/text_node_test.rb
@@ -4,27 +4,27 @@ class TextNodeTest < Test::Unit::TestCase
   def setup
     @node = HTML::Text.new(nil, 0, 0, "hello, howdy, aloha, annyeong")
   end
-  
+
   def test_to_s
     assert_equal "hello, howdy, aloha, annyeong", @node.to_s
   end
-  
+
   def test_find_string
     assert_equal @node, @node.find("hello, howdy, aloha, annyeong")
     assert_equal false, @node.find("bogus")
   end
-  
+
   def test_find_regexp
     assert_equal @node, @node.find(/an+y/)
     assert_nil @node.find(/b/)
   end
-  
+
   def test_find_hash
     assert_equal @node, @node.find(:content => /howdy/)
     assert_nil @node.find(:content => /^howdy$/)
     assert_equal false, @node.find(:content => "howdy")
   end
-  
+
   def test_find_other
     assert_nil @node.find(:hello)
   end
diff --git a/actionpack/test/template/html-scanner/tokenizer_test.rb b/actionpack/test/template/html-scanner/tokenizer_test.rb
index a001bcbbad..bf45a7c2e3 100644
--- a/actionpack/test/template/html-scanner/tokenizer_test.rb
+++ b/actionpack/test/template/html-scanner/tokenizer_test.rb
@@ -29,7 +29,7 @@ class TokenizerTest < Test::Unit::TestCase
     tokenize "</tag>"
     assert_next "</tag>"
   end
-  
+
   def test_tag_with_single_quoted_attribute
     tokenize %{<tag a='hello'>x}
     assert_next %{<tag a='hello'>}
@@ -49,7 +49,7 @@ class TokenizerTest < Test::Unit::TestCase
     tokenize %{<tag a="hello\\"">x}
     assert_next %{<tag a="hello\\"">}
   end
-  
+
   def test_tag_with_unquoted_attribute
     tokenize %{<tag a=hello>x}
     assert_next %{<tag a=hello>}
@@ -59,12 +59,12 @@ class TokenizerTest < Test::Unit::TestCase
     tokenize %{<tag a="x < y">x}
     assert_next %{<tag a="x < y">}
   end
-  
+
   def test_tag_with_gt_char_in_attribute
     tokenize %{<tag a="x > y">x}
     assert_next %{<tag a="x > y">}
   end
-  
+
   def test_doctype_tag
     tokenize %{<!DOCTYPE "blah" "blah" "blah">\n    <html>}
     assert_next %{<!DOCTYPE "blah" "blah" "blah">}
@@ -90,7 +90,7 @@ class TokenizerTest < Test::Unit::TestCase
     assert_next %{original }
     assert_next %{< hello > world}
   end
-  
+
   def test_less_than_without_matching_greater_than
     tokenize %{hello <span onmouseover="gotcha"\n<b>foo</b>\nbar</span>}
     assert_next %{hello }
@@ -109,22 +109,22 @@ class TokenizerTest < Test::Unit::TestCase
     assert_next %{<!-- neverending...}
     assert_end
   end
-  
+
   private
-  
+
     def tokenize(text)
       @tokenizer = HTML::Tokenizer.new(text)
     end
-    
+
     def assert_next(expected, message=nil)
       token = @tokenizer.next
       assert_equal expected, token, message
     end
-    
+
     def assert_sequence(*expected)
       assert_next expected.shift until expected.empty?
     end
-    
+
     def assert_end(message=nil)
       assert_nil @tokenizer.next, message
     end
diff --git a/actionpack/test/template/javascript_helper_test.rb b/actionpack/test/template/javascript_helper_test.rb
index a8ca19931b..2e7484afaf 100644
--- a/actionpack/test/template/javascript_helper_test.rb
+++ b/actionpack/test/template/javascript_helper_test.rb
@@ -22,8 +22,6 @@ class JavaScriptHelperTest < ActionView::TestCase
     ActiveSupport.escape_html_entities_in_json  = false
   end
 
-  def _evaluate_assigns_and_ivars() end
-
   def test_escape_javascript
     assert_equal '', escape_javascript(nil)
     assert_equal %(This \\"thing\\" is really\\n netos\\'), escape_javascript(%(This "thing" is really\n netos'))
diff --git a/actionpack/test/template/log_subscriber_test.rb b/actionpack/test/template/log_subscriber_test.rb
index eb1e548672..8b8b005a1d 100644
--- a/actionpack/test/template/log_subscriber_test.rb
+++ b/actionpack/test/template/log_subscriber_test.rb
@@ -29,7 +29,7 @@ class AVLogSubscriberTest < ActiveSupport::TestCase
     wait
 
     assert_equal 1, @logger.logged(:info).size
-    assert_match /Rendered test\/hello_world\.erb/, @logger.logged(:info).last
+    assert_match(/Rendered test\/hello_world\.erb/, @logger.logged(:info).last)
   end
 
   def test_render_text_template
@@ -37,7 +37,7 @@ class AVLogSubscriberTest < ActiveSupport::TestCase
     wait
 
     assert_equal 1, @logger.logged(:info).size
-    assert_match /Rendered text template/, @logger.logged(:info).last
+    assert_match(/Rendered text template/, @logger.logged(:info).last)
   end
 
   def test_render_inline_template
@@ -45,7 +45,7 @@ class AVLogSubscriberTest < ActiveSupport::TestCase
     wait
 
     assert_equal 1, @logger.logged(:info).size
-    assert_match /Rendered inline template/, @logger.logged(:info).last
+    assert_match(/Rendered inline template/, @logger.logged(:info).last)
   end
 
   def test_render_partial_template
@@ -53,16 +53,16 @@ class AVLogSubscriberTest < ActiveSupport::TestCase
     wait
 
     assert_equal 1, @logger.logged(:info).size
-    assert_match /Rendered test\/_customer.erb/, @logger.logged(:info).last
+    assert_match(/Rendered test\/_customer.erb/, @logger.logged(:info).last)
   end
 
   def test_render_partial_with_implicit_path
-    @view.stubs(:controller_path).returns("test")
+    @view.stubs(:controller_prefixes).returns(%w(test))
     @view.render(Customer.new("david"), :greeting => "hi")
     wait
 
     assert_equal 1, @logger.logged(:info).size
-    assert_match /Rendered customers\/_customer\.html\.erb/, @logger.logged(:info).last
+    assert_match(/Rendered customers\/_customer\.html\.erb/, @logger.logged(:info).last)
   end
 
   def test_render_collection_template
@@ -70,24 +70,24 @@ class AVLogSubscriberTest < ActiveSupport::TestCase
     wait
 
     assert_equal 1, @logger.logged(:info).size
-    assert_match /Rendered test\/_customer.erb/, @logger.logged(:info).last
+    assert_match(/Rendered test\/_customer.erb/, @logger.logged(:info).last)
   end
 
   def test_render_collection_with_implicit_path
-    @view.stubs(:controller_path).returns("test")
+    @view.stubs(:controller_prefixes).returns(%w(test))
     @view.render([ Customer.new("david"), Customer.new("mary") ], :greeting => "hi")
     wait
 
     assert_equal 1, @logger.logged(:info).size
-    assert_match /Rendered customers\/_customer\.html\.erb/, @logger.logged(:info).last
+    assert_match(/Rendered customers\/_customer\.html\.erb/, @logger.logged(:info).last)
   end
 
   def test_render_collection_template_without_path
-    @view.stubs(:controller_path).returns("test")
+    @view.stubs(:controller_prefixes).returns(%w(test))
     @view.render([ GoodCustomer.new("david"), Customer.new("mary") ], :greeting => "hi")
     wait
 
     assert_equal 1, @logger.logged(:info).size
-    assert_match /Rendered collection/, @logger.logged(:info).last
+    assert_match(/Rendered collection/, @logger.logged(:info).last)
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/test/template/lookup_context_test.rb b/actionpack/test/template/lookup_context_test.rb
index cc71cb42d0..8d063e66b0 100644
--- a/actionpack/test/template/lookup_context_test.rb
+++ b/actionpack/test/template/lookup_context_test.rb
@@ -47,7 +47,7 @@ class LookupContextTest < ActiveSupport::TestCase
   end
 
   test "handles */* formats" do
-    @lookup_context.formats = [:"*/*"]
+    @lookup_context.formats = ["*/*"]
     assert_equal Mime::SET, @lookup_context.formats
   end
 
@@ -73,25 +73,25 @@ class LookupContextTest < ActiveSupport::TestCase
       assert_equal :pt, I18n.locale
       assert_equal :pt, @lookup_context.locale
     ensure
-      I18n.config = I18n.config.i18n_config
+      I18n.config = I18n.config.original_config
     end
 
     assert_equal :pt, I18n.locale
   end
 
   test "find templates using the given view paths and configured details" do
-    template = @lookup_context.find("hello_world", "test")
+    template = @lookup_context.find("hello_world", %w(test))
     assert_equal "Hello world!", template.source
 
     @lookup_context.locale = :da
-    template = @lookup_context.find("hello_world", "test")
+    template = @lookup_context.find("hello_world", %w(test))
     assert_equal "Hey verden", template.source
   end
 
   test "found templates respects given formats if one cannot be found from template or handler" do
     ActionView::Template::Handlers::ERB.expects(:default_format).returns(nil)
     @lookup_context.formats = [:text]
-    template = @lookup_context.find("hello_world", "test")
+    template = @lookup_context.find("hello_world", %w(test))
     assert_equal [:text], template.formats
   end
 
@@ -100,8 +100,8 @@ class LookupContextTest < ActiveSupport::TestCase
 
     @lookup_context.with_fallbacks do
       assert_equal 3, @lookup_context.view_paths.size
-      assert @lookup_context.view_paths.include?(ActionView::FileSystemResolver.new(""))
-      assert @lookup_context.view_paths.include?(ActionView::FileSystemResolver.new("/"))
+      assert @lookup_context.view_paths.include?(ActionView::FallbackFileSystemResolver.new(""))
+      assert @lookup_context.view_paths.include?(ActionView::FallbackFileSystemResolver.new("/"))
     end
   end
 
@@ -137,30 +137,137 @@ class LookupContextTest < ActiveSupport::TestCase
 
   test "gives the key forward to the resolver, so it can be used as cache key" do
     @lookup_context.view_paths = ActionView::FixtureResolver.new("test/_foo.erb" => "Foo")
-    template = @lookup_context.find("foo", "test", true)
+    template = @lookup_context.find("foo", %w(test), true)
     assert_equal "Foo", template.source
 
     # Now we are going to change the template, but it won't change the returned template
     # since we will hit the cache.
     @lookup_context.view_paths.first.hash["test/_foo.erb"] = "Bar"
-    template = @lookup_context.find("foo", "test", true)
+    template = @lookup_context.find("foo", %w(test), true)
     assert_equal "Foo", template.source
 
     # This time we will change the locale. The updated template should be picked since
     # lookup_context generated a new key after we changed the locale.
     @lookup_context.locale = :da
-    template = @lookup_context.find("foo", "test", true)
+    template = @lookup_context.find("foo", %w(test), true)
     assert_equal "Bar", template.source
 
     # Now we will change back the locale and it will still pick the old template.
     # This is expected because lookup_context will reuse the previous key for :en locale.
     @lookup_context.locale = :en
-    template = @lookup_context.find("foo", "test", true)
+    template = @lookup_context.find("foo", %w(test), true)
     assert_equal "Foo", template.source
 
     # Finally, we can expire the cache. And the expected template will be used.
     @lookup_context.view_paths.first.clear_cache
-    template = @lookup_context.find("foo", "test", true)
+    template = @lookup_context.find("foo", %w(test), true)
     assert_equal "Bar", template.source
   end
-end
\ No newline at end of file
+
+  test "can disable the cache on demand" do
+    @lookup_context.view_paths = ActionView::FixtureResolver.new("test/_foo.erb" => "Foo")
+    old_template = @lookup_context.find("foo", %w(test), true)
+
+    template = @lookup_context.find("foo", %w(test), true)
+    assert_equal template, old_template
+
+    assert @lookup_context.cache
+    template = @lookup_context.disable_cache do
+      assert !@lookup_context.cache
+      @lookup_context.find("foo", %w(test), true)
+    end
+    assert @lookup_context.cache
+
+    assert_not_equal template, old_template
+  end
+
+  test "data can be stored in cached templates" do
+    template = @lookup_context.find("hello_world", %w(test))
+    template.data["cached"] = "data"
+    assert_equal "Hello world!", template.source
+
+    template = @lookup_context.find("hello_world", %w(test))
+    assert_equal "data", template.data["cached"]
+    assert_equal "Hello world!", template.source
+  end
+end
+
+class LookupContextWithFalseCaching < ActiveSupport::TestCase
+  def setup
+    @resolver = ActionView::FixtureResolver.new("test/_foo.erb" => ["Foo", Time.utc(2000)])
+    @resolver.stubs(:caching?).returns(false)
+    @lookup_context = ActionView::LookupContext.new(@resolver, {})
+  end
+
+  test "templates are always found in the resolver but timestamp is checked before being compiled" do
+    template = @lookup_context.find("foo", %w(test), true)
+    assert_equal "Foo", template.source
+
+    # Now we are going to change the template, but it won't change the returned template
+    # since the timestamp is the same.
+    @resolver.hash["test/_foo.erb"][0] = "Bar"
+    template = @lookup_context.find("foo", %w(test), true)
+    assert_equal "Foo", template.source
+
+    # Now update the timestamp.
+    @resolver.hash["test/_foo.erb"][1] = Time.now.utc
+    template = @lookup_context.find("foo", %w(test), true)
+    assert_equal "Bar", template.source
+  end
+
+  test "if no template was found in the second lookup, with no cache, raise error" do
+    template = @lookup_context.find("foo", %w(test), true)
+    assert_equal "Foo", template.source
+
+    @resolver.hash.clear
+    assert_raise ActionView::MissingTemplate do
+      @lookup_context.find("foo", %w(test), true)
+    end
+  end
+
+  test "if no template was cached in the first lookup, retrieval should work in the second call" do
+    @resolver.hash.clear
+    assert_raise ActionView::MissingTemplate do
+      @lookup_context.find("foo", %w(test), true)
+    end
+
+    @resolver.hash["test/_foo.erb"] = ["Foo", Time.utc(2000)]
+    template = @lookup_context.find("foo", %w(test), true)
+    assert_equal "Foo", template.source
+  end
+
+  test "data can be stored as long as template was not updated" do
+    template = @lookup_context.find("foo", %w(test), true)
+    template.data["cached"] = "data"
+    assert_equal "Foo", template.source
+
+    template = @lookup_context.find("foo", %w(test), true)
+    assert_equal "data", template.data["cached"]
+    assert_equal "Foo", template.source
+
+    @resolver.hash["test/_foo.erb"][1] = Time.now.utc
+    template = @lookup_context.find("foo", %w(test), true)
+    assert_nil template.data["cached"]
+    assert_equal "Foo", template.source
+  end
+end
+
+class TestMissingTemplate < ActiveSupport::TestCase
+  def setup
+    @lookup_context = ActionView::LookupContext.new("/Path/to/views", {})
+  end
+
+  test "if no template was found we get a helpful error message including the inheritance chain" do
+    e = assert_raise ActionView::MissingTemplate do
+      @lookup_context.find("foo", %w(parent child))
+    end
+    assert_match %r{Missing template parent/foo, child/foo with .* Searched in:\n  \* "/Path/to/views"\n}, e.message
+  end
+
+  test "if no partial was found we get a helpful error message including the inheritance chain" do
+    e = assert_raise ActionView::MissingTemplate do
+      @lookup_context.find("foo", %w(parent child), true)
+    end
+    assert_match %r{Missing partial parent/foo, child/foo with .* Searched in:\n  \* "/Path/to/views"\n}, e.message
+  end
+end
diff --git a/actionpack/test/template/number_helper_i18n_test.rb b/actionpack/test/template/number_helper_i18n_test.rb
index 8561019461..5df09b4d3b 100644
--- a/actionpack/test/template/number_helper_i18n_test.rb
+++ b/actionpack/test/template/number_helper_i18n_test.rb
@@ -7,7 +7,7 @@ class NumberHelperTest < ActionView::TestCase
     I18n.backend.store_translations 'ts',
       :number => {
         :format => { :precision => 3, :delimiter => ',', :separator => '.', :significant => false, :strip_insignificant_zeros => false },
-        :currency => { :format => { :unit => '&$', :format => '%u - %n', :precision => 2 } },
+        :currency => { :format => { :unit => '&$', :format => '%u - %n', :negative_format => '(%u - %n)', :precision => 2 } },
         :human => {
           :format => {
             :precision => 2,
@@ -41,17 +41,20 @@ class NumberHelperTest < ActionView::TestCase
       :custom_units_for_number_to_human => {:mili => "mm", :centi => "cm", :deci => "dm", :unit => "m", :ten => "dam", :hundred => "hm", :thousand => "km"}
   end
 
-  def test_number_to_currency
+  def test_number_to_i18n_currency
     assert_equal("&$ - 10.00", number_to_currency(10, :locale => 'ts'))
+    assert_equal("(&$ - 10.00)", number_to_currency(-10, :locale => 'ts'))
+    assert_equal("-10.00 - &$", number_to_currency(-10, :locale => 'ts', :format => "%n - %u"))
   end
 
   def test_number_to_currency_with_clean_i18n_settings
     clean_i18n do
       assert_equal("$10.00", number_to_currency(10))
+      assert_equal("-$10.00", number_to_currency(-10))
     end
   end
 
-  def test_number_with_precision
+  def test_number_with_i18n_precision
     #Delimiter was set to ""
     assert_equal("10000", number_with_precision(10000, :locale => 'ts'))
 
@@ -60,12 +63,12 @@ class NumberHelperTest < ActionView::TestCase
 
   end
 
-  def test_number_with_delimiter
+  def test_number_with_i18n_delimiter
     #Delimiter "," and separator "."
     assert_equal("1,000,000.234", number_with_delimiter(1000000.234, :locale => 'ts'))
   end
 
-  def test_number_to_percentage
+  def test_number_to_i18n_percentage
     # to see if strip_insignificant_zeros is true
     assert_equal("1%", number_to_percentage(1, :locale => 'ts'))
     # precision is 2, significant should be inherited
@@ -74,7 +77,7 @@ class NumberHelperTest < ActionView::TestCase
     assert_equal("12434%", number_to_percentage(12434, :locale => 'ts'))
   end
 
-  def test_number_to_human_size
+  def test_number_to_i18n_human_size
     #b for bytes and k for kbytes
     assert_equal("2 k", number_to_human_size(2048, :locale => 'ts'))
     assert_equal("42 b", number_to_human_size(42, :locale => 'ts'))
diff --git a/actionpack/test/template/number_helper_test.rb b/actionpack/test/template/number_helper_test.rb
index 7f787b7b00..c8d50ebf75 100644
--- a/actionpack/test/template/number_helper_test.rb
+++ b/actionpack/test/template/number_helper_test.rb
@@ -45,11 +45,15 @@ class NumberHelperTest < ActionView::TestCase
   def test_number_to_currency
     assert_equal("$1,234,567,890.50", number_to_currency(1234567890.50))
     assert_equal("$1,234,567,890.51", number_to_currency(1234567890.506))
+    assert_equal("-$1,234,567,890.50", number_to_currency(-1234567890.50))
+    assert_equal("-$ 1,234,567,890.50", number_to_currency(-1234567890.50, {:format => "%u %n"}))
+    assert_equal("($1,234,567,890.50)", number_to_currency(-1234567890.50, {:negative_format => "(%u%n)"}))
     assert_equal("$1,234,567,892", number_to_currency(1234567891.50, {:precision => 0}))
     assert_equal("$1,234,567,890.5", number_to_currency(1234567890.50, {:precision => 1}))
     assert_equal("&pound;1234567890,50", number_to_currency(1234567890.50, {:unit => "&pound;", :separator => ",", :delimiter => ""}))
     assert_equal("$1,234,567,890.50", number_to_currency("1234567890.50"))
     assert_equal("1,234,567,890.50 K&#269;", number_to_currency("1234567890.50", {:unit => "K&#269;", :format => "%n %u"}))
+    assert_equal("1,234,567,890.50 - K&#269;", number_to_currency("-1234567890.50", {:unit => "K&#269;", :format => "%n %u", :negative_format => "%n - %u"}))
   end
 
   def test_number_to_percentage
@@ -83,6 +87,7 @@ class NumberHelperTest < ActionView::TestCase
   end
 
   def test_number_with_precision
+    assert_equal("-111.235", number_with_precision(-111.2346))
     assert_equal("111.235", number_with_precision(111.2346))
     assert_equal("31.83", number_with_precision(31.825, :precision => 2))
     assert_equal("111.23", number_with_precision(111.2346, :precision => 2))
@@ -95,6 +100,8 @@ class NumberHelperTest < ActionView::TestCase
     assert_equal("0", number_with_precision(0, :precision => 0))
     assert_equal("0.00100", number_with_precision(0.001, :precision => 5))
     assert_equal("0.001", number_with_precision(0.00111, :precision => 3))
+    assert_equal("10.00", number_with_precision(9.995, :precision => 2))
+    assert_equal("11.00", number_with_precision(10.995, :precision => 2))
   end
 
   def test_number_with_precision_with_custom_delimiter_and_separator
@@ -116,10 +123,13 @@ class NumberHelperTest < ActionView::TestCase
     assert_equal "9775.00", number_with_precision(9775, :precision => 6, :significant => true )
     assert_equal "5.392900", number_with_precision(5.3929, :precision => 7, :significant => true )
     assert_equal "0.0", number_with_precision(0, :precision => 2, :significant => true )
-    assert_equal "0", number_with_precision(0, :precision => 1, :significant => true )    
+    assert_equal "0", number_with_precision(0, :precision => 1, :significant => true )
     assert_equal "0.0001", number_with_precision(0.0001, :precision => 1, :significant => true )
     assert_equal "0.000100", number_with_precision(0.0001, :precision => 3, :significant => true )
     assert_equal "0.0001", number_with_precision(0.0001111, :precision => 1, :significant => true )
+    assert_equal "10.0", number_with_precision(9.995, :precision => 3, :significant => true)
+    assert_equal "9.99", number_with_precision(9.994, :precision => 3, :significant => true)
+    assert_equal "11.0", number_with_precision(10.995, :precision => 3, :significant => true)
   end
 
   def test_number_with_precision_with_strip_insignificant_zeros
@@ -130,7 +140,7 @@ class NumberHelperTest < ActionView::TestCase
 
   def test_number_with_precision_with_significant_true_and_zero_precision
     # Zero precision with significant is a mistake (would always return zero),
-    # so we treat it as if significant was false (increases backwards compatibily for number_to_human_size)
+    # so we treat it as if significant was false (increases backwards compatibility for number_to_human_size)
     assert_equal "124", number_with_precision(123.987, :precision => 0, :significant => true)
     assert_equal "12", number_with_precision(12, :precision => 0, :significant => true )
     assert_equal "12", number_with_precision("12.3", :precision => 0, :significant => true )
@@ -184,53 +194,57 @@ class NumberHelperTest < ActionView::TestCase
   end
 
   def test_number_to_human
-     assert_equal '123', number_to_human(123)
-     assert_equal '1.23 Thousand', number_to_human(1234)
-     assert_equal '12.3 Thousand', number_to_human(12345)
-     assert_equal '1.23 Million', number_to_human(1234567)
-     assert_equal '1.23 Billion', number_to_human(1234567890)
-     assert_equal '1.23 Trillion', number_to_human(1234567890123)
-     assert_equal '1.23 Quadrillion', number_to_human(1234567890123456)
-     assert_equal '1230 Quadrillion', number_to_human(1234567890123456789)
-     assert_equal '490 Thousand', number_to_human(489939, :precision => 2)
-     assert_equal '489.9 Thousand', number_to_human(489939, :precision => 4)
-     assert_equal '489 Thousand', number_to_human(489000, :precision => 4)
-     assert_equal '489.0 Thousand', number_to_human(489000, :precision => 4, :strip_insignificant_zeros => false)
-     assert_equal '1.2346 Million', number_to_human(1234567, :precision => 4, :significant => false)
-     assert_equal '1,2 Million', number_to_human(1234567, :precision => 1, :significant => false, :separator => ',')
-     assert_equal '1 Million', number_to_human(1234567, :precision => 0, :significant => true, :separator => ',') #significant forced to false
+    assert_equal '-123', number_to_human(-123)
+    assert_equal '-0.5', number_to_human(-0.5)
+    assert_equal '0',   number_to_human(0)
+    assert_equal '0.5', number_to_human(0.5)
+    assert_equal '123', number_to_human(123)
+    assert_equal '1.23 Thousand', number_to_human(1234)
+    assert_equal '12.3 Thousand', number_to_human(12345)
+    assert_equal '1.23 Million', number_to_human(1234567)
+    assert_equal '1.23 Billion', number_to_human(1234567890)
+    assert_equal '1.23 Trillion', number_to_human(1234567890123)
+    assert_equal '1.23 Quadrillion', number_to_human(1234567890123456)
+    assert_equal '1230 Quadrillion', number_to_human(1234567890123456789)
+    assert_equal '490 Thousand', number_to_human(489939, :precision => 2)
+    assert_equal '489.9 Thousand', number_to_human(489939, :precision => 4)
+    assert_equal '489 Thousand', number_to_human(489000, :precision => 4)
+    assert_equal '489.0 Thousand', number_to_human(489000, :precision => 4, :strip_insignificant_zeros => false)
+    assert_equal '1.2346 Million', number_to_human(1234567, :precision => 4, :significant => false)
+    assert_equal '1,2 Million', number_to_human(1234567, :precision => 1, :significant => false, :separator => ',')
+    assert_equal '1 Million', number_to_human(1234567, :precision => 0, :significant => true, :separator => ',') #significant forced to false
   end
 
   def test_number_to_human_with_custom_units
-     #Only integers
-     volume = {:unit => "ml", :thousand => "lt", :million => "m3"}
-     assert_equal '123 lt', number_to_human(123456, :units => volume)
-     assert_equal '12 ml', number_to_human(12, :units => volume)
-     assert_equal '1.23 m3', number_to_human(1234567, :units => volume)
-
-     #Including fractionals
-     distance = {:mili => "mm", :centi => "cm", :deci => "dm", :unit => "m", :ten => "dam", :hundred => "hm", :thousand => "km"}
-     assert_equal '1.23 mm', number_to_human(0.00123, :units => distance)
-     assert_equal '1.23 cm', number_to_human(0.0123, :units => distance)
-     assert_equal '1.23 dm', number_to_human(0.123, :units => distance)
-     assert_equal '1.23 m', number_to_human(1.23, :units => distance)
-     assert_equal '1.23 dam', number_to_human(12.3, :units => distance)
-     assert_equal '1.23 hm', number_to_human(123, :units => distance)
-     assert_equal '1.23 km', number_to_human(1230, :units => distance)
-     assert_equal '1.23 km', number_to_human(1230, :units => distance)
-     assert_equal '1.23 km', number_to_human(1230, :units => distance)
-     assert_equal '12.3 km', number_to_human(12300, :units => distance)
-
-     #The quantifiers don't need to be a continuous sequence
-     gangster = {:hundred => "hundred bucks", :million => "thousand quids"}
-     assert_equal '1 hundred bucks', number_to_human(100, :units => gangster)
-     assert_equal '25 hundred bucks', number_to_human(2500, :units => gangster)
-     assert_equal '25 thousand quids', number_to_human(25000000, :units => gangster)
-     assert_equal '12300 thousand quids', number_to_human(12345000000, :units => gangster)
-
-     #Spaces are stripped from the resulting string
-     assert_equal '4', number_to_human(4, :units => {:unit => "", :ten => 'tens '})
-     assert_equal '4.5  tens', number_to_human(45, :units => {:unit => "", :ten => ' tens   '})
+    #Only integers
+    volume = {:unit => "ml", :thousand => "lt", :million => "m3"}
+    assert_equal '123 lt', number_to_human(123456, :units => volume)
+    assert_equal '12 ml', number_to_human(12, :units => volume)
+    assert_equal '1.23 m3', number_to_human(1234567, :units => volume)
+
+    #Including fractionals
+    distance = {:mili => "mm", :centi => "cm", :deci => "dm", :unit => "m", :ten => "dam", :hundred => "hm", :thousand => "km"}
+    assert_equal '1.23 mm', number_to_human(0.00123, :units => distance)
+    assert_equal '1.23 cm', number_to_human(0.0123, :units => distance)
+    assert_equal '1.23 dm', number_to_human(0.123, :units => distance)
+    assert_equal '1.23 m', number_to_human(1.23, :units => distance)
+    assert_equal '1.23 dam', number_to_human(12.3, :units => distance)
+    assert_equal '1.23 hm', number_to_human(123, :units => distance)
+    assert_equal '1.23 km', number_to_human(1230, :units => distance)
+    assert_equal '1.23 km', number_to_human(1230, :units => distance)
+    assert_equal '1.23 km', number_to_human(1230, :units => distance)
+    assert_equal '12.3 km', number_to_human(12300, :units => distance)
+
+    #The quantifiers don't need to be a continuous sequence
+    gangster = {:hundred => "hundred bucks", :million => "thousand quids"}
+    assert_equal '1 hundred bucks', number_to_human(100, :units => gangster)
+    assert_equal '25 hundred bucks', number_to_human(2500, :units => gangster)
+    assert_equal '25 thousand quids', number_to_human(25000000, :units => gangster)
+    assert_equal '12300 thousand quids', number_to_human(12345000000, :units => gangster)
+
+    #Spaces are stripped from the resulting string
+    assert_equal '4', number_to_human(4, :units => {:unit => "", :ten => 'tens '})
+    assert_equal '4.5  tens', number_to_human(45, :units => {:unit => "", :ten => ' tens   '})
   end
 
   def test_number_to_human_with_custom_format
@@ -286,7 +300,8 @@ class NumberHelperTest < ActionView::TestCase
     assert number_to_percentage("asdf".html_safe).html_safe?
 
     assert number_to_phone(1).html_safe?
-    assert !number_to_phone("<script></script>").html_safe?
+    assert_equal "&lt;script&gt;&lt;/script&gt;", number_to_phone("<script></script>")
+    assert number_to_phone("<script></script>").html_safe?
     assert number_to_phone("asdf".html_safe).html_safe?
 
     assert number_with_delimiter(1).html_safe?
@@ -341,7 +356,7 @@ class NumberHelperTest < ActionView::TestCase
     end
 
     assert_raise InvalidNumberError do
-     number_with_delimiter("x", :raise => true)
+      number_with_delimiter("x", :raise => true)
     end
     begin
       number_with_delimiter("x", :raise => true)
@@ -350,7 +365,7 @@ class NumberHelperTest < ActionView::TestCase
     end
 
     assert_raise InvalidNumberError do
-     number_to_phone("x", :raise => true)
+      number_to_phone("x", :raise => true)
     end
     begin
       number_to_phone("x", :raise => true)
diff --git a/actionpack/test/template/output_safety_helper_test.rb b/actionpack/test/template/output_safety_helper_test.rb
new file mode 100644
index 0000000000..fc127c24e9
--- /dev/null
+++ b/actionpack/test/template/output_safety_helper_test.rb
@@ -0,0 +1,30 @@
+require 'abstract_unit'
+require 'testing_sandbox'
+
+class OutputSafetyHelperTest < ActionView::TestCase
+  tests ActionView::Helpers::OutputSafetyHelper
+  include TestingSandbox
+
+  def setup
+    @string = "hello"
+  end
+
+  test "raw returns the safe string" do
+    result = raw(@string)
+    assert_equal @string, result
+    assert result.html_safe?
+  end
+
+  test "raw handles nil values correctly" do
+    assert_equal "", raw(nil)
+  end
+
+  test "safe_join should html_escape any items, including the separator, if they are not html_safe" do
+    joined = safe_join(["<p>foo</p>".html_safe, "<p>bar</p>"], "<br />")
+    assert_equal "<p>foo</p>&lt;br /&gt;&lt;p&gt;bar&lt;/p&gt;", joined
+
+    joined = safe_join(["<p>foo</p>".html_safe, "<p>bar</p>".html_safe], "<br />".html_safe)
+    assert_equal "<p>foo</p><br /><p>bar</p>", joined
+  end
+
+end
\ No newline at end of file
diff --git a/actionpack/test/template/prototype_helper_test.rb b/actionpack/test/template/prototype_helper_test.rb
index 036a44730c..a6aa848a00 100644
--- a/actionpack/test/template/prototype_helper_test.rb
+++ b/actionpack/test/template/prototype_helper_test.rb
@@ -71,7 +71,7 @@ class PrototypeHelperBaseTest < ActionView::TestCase
     end
 
     def create_generator
-      block = Proc.new { |*args| yield *args if block_given? }
+      block = Proc.new { |*args| yield(*args) if block_given? }
       JavaScriptGenerator.new self, &block
     end
 end
diff --git a/actionpack/test/template/raw_output_helper_test.rb b/actionpack/test/template/raw_output_helper_test.rb
deleted file mode 100644
index 598aa5b1d8..0000000000
--- a/actionpack/test/template/raw_output_helper_test.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-require 'abstract_unit'
-require 'testing_sandbox'
-
-class RawOutputHelperTest < ActionView::TestCase
-  tests ActionView::Helpers::RawOutputHelper
-  include TestingSandbox
-
-  def setup
-    @string = "hello"
-  end
-
-  test "raw returns the safe string" do
-    result = raw(@string)
-    assert_equal @string, result
-    assert result.html_safe?
-  end
-
-  test "raw handles nil values correctly" do
-    assert_equal "", raw(nil)
-  end
-end
\ No newline at end of file
diff --git a/actionpack/test/template/render_test.rb b/actionpack/test/template/render_test.rb
index 059dcedad8..dd86bfed04 100644
--- a/actionpack/test/template/render_test.rb
+++ b/actionpack/test/template/render_test.rb
@@ -69,8 +69,6 @@ module RenderTestCases
   end
 
   def test_render_update
-    # TODO: You should not have to stub out template because template is self!
-    @view.instance_variable_set(:@template, @view)
     assert_equal 'alert("Hello, World!");', @view.render(:update) { |page| page.alert('Hello, World!') }
   end
 
@@ -116,7 +114,7 @@ module RenderTestCases
   end
 
   def test_render_sub_template_with_errors
-    @view.render(:file => "test/sub_template_raise")
+    @view.render(:template => "test/sub_template_raise")
     flunk "Render did not raise Template::Error"
   rescue ActionView::Template::Error => e
     assert_match %r!method.*doesnt_exist!, e.message
@@ -125,15 +123,35 @@ module RenderTestCases
     assert_equal File.expand_path("#{FIXTURE_LOAD_PATH}/test/_raise.html.erb"), e.file_name
   end
 
+  def test_render_file_with_errors
+    @view.render(:file => File.expand_path("test/_raise", FIXTURE_LOAD_PATH))
+    flunk "Render did not raise Template::Error"
+  rescue ActionView::Template::Error => e
+    assert_match %r!method.*doesnt_exist!, e.message
+    assert_equal "", e.sub_template_message
+    assert_equal "1", e.line_number
+    assert_equal "1: <%= doesnt_exist %>", e.annoted_source_code.strip
+    assert_equal File.expand_path("#{FIXTURE_LOAD_PATH}/test/_raise.html.erb"), e.file_name
+  end
+
   def test_render_object
     assert_equal "Hello: david", @view.render(:partial => "test/customer", :object => Customer.new("david"))
   end
 
+  def test_render_object_with_array
+    assert_equal "[1, 2, 3]", @view.render(:partial => "test/object_inspector", :object => [1, 2, 3])
+  end
+
   def test_render_partial_collection
     assert_equal "Hello: davidHello: mary", @view.render(:partial => "test/customer", :collection => [ Customer.new("david"), Customer.new("mary") ])
   end
 
-  def test_render_partial_collection_as
+  def test_render_partial_collection_as_by_string
+    assert_equal "david david davidmary mary mary",
+      @view.render(:partial => "test/customer_with_var", :collection => [ Customer.new("david"), Customer.new("mary") ], :as => 'customer')
+  end
+
+  def test_render_partial_collection_as_by_symbol
     assert_equal "david david davidmary mary mary",
       @view.render(:partial => "test/customer_with_var", :collection => [ Customer.new("david"), Customer.new("mary") ], :as => :customer)
   end
@@ -191,6 +209,11 @@ module RenderTestCases
     @view.formats = nil
   end
 
+  def test_render_layout_with_block_and_other_partial_inside
+    render = @view.render(:layout => "test/layout_with_partial_and_yield.html.erb") { "Yield!" }
+    assert_equal "Before\npartial html\nYield!\nAfter\n", render
+  end
+
   def test_render_inline
     assert_equal "Hello, World!", @view.render(:inline => "Hello, World!")
   end
@@ -208,6 +231,20 @@ module RenderTestCases
       "@output_buffer << 'source: #{template.source.inspect}'\n"
   end
 
+  WithViewHandler = lambda do |template, view|
+    %'"#{template.class} #{view.class}"'
+  end
+
+  def test_render_inline_with_render_from_to_proc
+    ActionView::Template.register_template_handler :ruby_handler, :source.to_proc
+    assert_equal '3', @view.render(:inline => "(1 + 2).to_s", :type => :ruby_handler)
+  end
+
+  def test_render_inline_with_template_handler_with_view
+    ActionView::Template.register_template_handler :with_view, WithViewHandler
+    assert_equal 'ActionView::Template ActionView::Base', @view.render(:inline => "Hello, World!", :type => :with_view)
+  end
+
   def test_render_inline_with_compilable_custom_type
     ActionView::Template.register_template_handler :foo, CustomHandler
     assert_equal 'source: "Hello, World!"', @view.render(:inline => "Hello, World!", :type => :foo)
@@ -234,13 +271,49 @@ module RenderTestCases
       @view.render(:file => "test/hello_world.erb", :layout => "layouts/yield_with_render_inline_inside")
   end
 
+  def test_render_with_layout_which_renders_another_partial
+    assert_equal %(partial html\nHello world!\n),
+      @view.render(:file => "test/hello_world.erb", :layout => "layouts/yield_with_render_partial_inside")
+  end
 
-  # TODO: Move to deprecated_tests.rb
-  def test_render_with_nested_layout_deprecated
-    assert_deprecated do
-      assert_equal %(<title>title</title>\n\n<div id="column">column</div>\n<div id="content">content</div>\n),
-        @view.render(:file => "test/deprecated_nested_layout.erb", :layout => "layouts/yield")
-    end
+  def test_render_layout_with_block_and_yield
+    assert_equal %(Content from block!\n),
+      @view.render(:layout => "layouts/yield_only") { "Content from block!" }
+  end
+
+  def test_render_layout_with_block_and_yield_with_params
+    assert_equal %(Yield! Content from block!\n),
+      @view.render(:layout => "layouts/yield_with_params") { |param| "#{param} Content from block!" }
+  end
+
+  def test_render_layout_with_block_which_renders_another_partial_and_yields
+    assert_equal %(partial html\nContent from block!\n),
+      @view.render(:layout => "layouts/partial_and_yield") { "Content from block!" }
+  end
+
+  def test_render_partial_and_layout_without_block_with_locals
+    assert_equal %(Before (Foo!)\npartial html\nAfter),
+      @view.render(:partial => 'test/partial', :layout => 'test/layout_for_partial', :locals => { :name => 'Foo!'})
+  end
+
+  def test_render_partial_and_layout_without_block_with_locals_and_rendering_another_partial
+    assert_equal %(Before (Foo!)\npartial html\npartial with partial\n\nAfter),
+      @view.render(:partial => 'test/partial_with_partial', :layout => 'test/layout_for_partial', :locals => { :name => 'Foo!'})
+  end
+
+  def test_render_layout_with_a_nested_render_layout_call
+    assert_equal %(Before (Foo!)\nBefore (Bar!)\npartial html\nAfter\npartial with layout\n\nAfter),
+      @view.render(:partial => 'test/partial_with_layout', :layout => 'test/layout_for_partial', :locals => { :name => 'Foo!'})
+  end
+
+  def test_render_layout_with_a_nested_render_layout_call_using_block_with_render_partial
+    assert_equal %(Before (Foo!)\nBefore (Bar!)\n\n  partial html\n\nAfterpartial with layout\n\nAfter),
+      @view.render(:partial => 'test/partial_with_layout_block_partial', :layout => 'test/layout_for_partial', :locals => { :name => 'Foo!'})
+  end
+
+  def test_render_layout_with_a_nested_render_layout_call_using_block_with_render_content
+    assert_equal %(Before (Foo!)\nBefore (Bar!)\n\n  Content from inside layout!\n\nAfterpartial with layout\n\nAfter),
+      @view.render(:partial => 'test/partial_with_layout_block_content', :layout => 'test/layout_for_partial', :locals => { :name => 'Foo!'})
   end
 
   def test_render_with_nested_layout
@@ -252,6 +325,11 @@ module RenderTestCases
     assert_equal %(\n<title>title</title>\n\n),
       @view.render(:file => "test/layout_render_file.erb")
   end
+
+  def test_render_layout_with_object
+    assert_equal %(<title>David</title>),
+      @view.render(:file => "test/layout_render_object.erb")
+  end
 end
 
 class CachedViewRenderTest < ActiveSupport::TestCase
@@ -303,7 +381,7 @@ class LazyViewRenderTest < ActiveSupport::TestCase
     end
 
     def test_render_utf8_template_with_incompatible_external_encoding
-      with_external_encoding Encoding::SJIS do
+      with_external_encoding Encoding::SHIFT_JIS do
         begin
           result = @view.render(:file => "test/utf8.html.erb", :layouts => "layouts/yield")
           flunk 'Should have raised incompatible encoding error'
@@ -314,7 +392,7 @@ class LazyViewRenderTest < ActiveSupport::TestCase
     end
 
     def test_render_utf8_template_with_partial_with_incompatible_encoding
-      with_external_encoding Encoding::SJIS do
+      with_external_encoding Encoding::SHIFT_JIS do
         begin
           result = @view.render(:file => "test/utf8_magic_with_bare_partial.html.erb", :layouts => "layouts/yield")
           flunk 'Should have raised incompatible encoding error'
@@ -325,10 +403,11 @@ class LazyViewRenderTest < ActiveSupport::TestCase
     end
 
     def with_external_encoding(encoding)
-      old, Encoding.default_external = Encoding.default_external, encoding
+      old = Encoding.default_external
+      silence_warnings { Encoding.default_external = encoding }
       yield
     ensure
-      Encoding.default_external = old
+      silence_warnings { Encoding.default_external = old }
     end
   end
 end
diff --git a/actionpack/test/template/resolver_patterns_test.rb b/actionpack/test/template/resolver_patterns_test.rb
new file mode 100644
index 0000000000..97b1bad055
--- /dev/null
+++ b/actionpack/test/template/resolver_patterns_test.rb
@@ -0,0 +1,31 @@
+require 'abstract_unit'
+
+class ResolverPatternsTest < ActiveSupport::TestCase
+  def setup
+    path = File.expand_path("../../fixtures/", __FILE__)
+    pattern = ":prefix/{:formats/,}:action{.:formats,}{.:handlers,}"
+    @resolver = ActionView::FileSystemResolver.new(path, pattern)
+  end
+
+  def test_should_return_empty_list_for_unknown_path
+    templates = @resolver.find_all("unknown", "custom_pattern", false, {:locale => [], :formats => [:html], :handlers => [:erb]})
+    assert_equal [], templates, "expected an empty list of templates"
+  end
+
+  def test_should_return_template_for_declared_path
+    templates = @resolver.find_all("path", "custom_pattern", false, {:locale => [], :formats => [:html], :handlers => [:erb]})
+    assert_equal 1, templates.size, "expected one template"
+    assert_equal "Hello custom patterns!", templates.first.source
+    assert_equal "custom_pattern/path",    templates.first.virtual_path
+    assert_equal [:html],                  templates.first.formats
+  end
+
+  def test_should_return_all_templates_when_ambigous_pattern
+    templates = @resolver.find_all("another", "custom_pattern", false, {:locale => [], :formats => [:html], :handlers => [:erb]})
+    assert_equal 2, templates.size, "expected two templates"
+    assert_equal "Another template!",      templates[0].source
+    assert_equal "custom_pattern/another", templates[0].virtual_path
+    assert_equal "Hello custom patterns!", templates[1].source
+    assert_equal "custom_pattern/another", templates[1].virtual_path
+  end
+end
diff --git a/actionpack/test/template/tag_helper_test.rb b/actionpack/test/template/tag_helper_test.rb
index 507cdca8d0..60b466a9ff 100644
--- a/actionpack/test/template/tag_helper_test.rb
+++ b/actionpack/test/template/tag_helper_test.rb
@@ -11,8 +11,8 @@ class TagHelperTest < ActionView::TestCase
 
   def test_tag_options
     str = tag("p", "class" => "show", :class => "elsewhere")
-    assert_match /class="show"/, str
-    assert_match /class="elsewhere"/, str
+    assert_match(/class="show"/, str)
+    assert_match(/class="elsewhere"/, str)
   end
 
   def test_tag_options_rejects_nil_option
@@ -90,24 +90,31 @@ class TagHelperTest < ActionView::TestCase
   def test_cdata_section
     assert_equal "<![CDATA[<hello world>]]>", cdata_section("<hello world>")
   end
-  
+
   def test_escape_once
     assert_equal '1 &lt; 2 &amp; 3', escape_once('1 < 2 &amp; 3')
   end
-  
+
   def test_tag_honors_html_safe_for_param_values
     ['1&amp;2', '1 &lt; 2', '&#8220;test&#8220;'].each do |escaped|
       assert_equal %(<a href="#{escaped}" />), tag('a', :href => escaped.html_safe)
     end
   end
-  
+
   def test_skip_invalid_escaped_attributes
     ['&1;', '&#1dfa3;', '& #123;'].each do |escaped|
-      assert_equal %(<a href="#{escaped.gsub /&/, '&amp;'}" />), tag('a', :href => escaped)
+      assert_equal %(<a href="#{escaped.gsub(/&/, '&amp;')}" />), tag('a', :href => escaped)
     end
   end
 
   def test_disable_escaping
     assert_equal '<a href="&amp;" />', tag('a', { :href => '&amp;' }, false, false)
   end
+
+  def test_data_attributes
+    ['data', :data].each { |data|
+      assert_dom_equal '<a data-a-number="1" data-array="[1,2,3]" data-hash="{&quot;key&quot;:&quot;value&quot;}" data-string="hello" data-symbol="foo" />',
+        tag('a', { data => { :a_number => 1, :string => 'hello', :symbol => :foo, :array => [1, 2, 3], :hash => { :key => 'value'} } })
+    }
+  end
 end
diff --git a/actionpack/test/template/template_error_test.rb b/actionpack/test/template/template_error_test.rb
new file mode 100644
index 0000000000..3a874082d9
--- /dev/null
+++ b/actionpack/test/template/template_error_test.rb
@@ -0,0 +1,13 @@
+require "abstract_unit"
+
+class TemplateErrorTest < ActiveSupport::TestCase
+  def test_provides_original_message
+    error = ActionView::Template::Error.new("test", {}, Exception.new("original"))
+    assert_equal "original", error.message
+  end
+
+  def test_provides_useful_inspect
+    error = ActionView::Template::Error.new("test", {}, Exception.new("original"))
+    assert_equal "#<ActionView::Template::Error: original>", error.inspect
+  end
+end
diff --git a/actionpack/test/template/template_test.rb b/actionpack/test/template/template_test.rb
index 18e0e83ec3..3432a02c3c 100644
--- a/actionpack/test/template/template_test.rb
+++ b/actionpack/test/template/template_test.rb
@@ -1,18 +1,21 @@
 require "abstract_unit"
-
-if "ruby".encoding_aware?
-  # These are the normal settings that will be set up by Railties
-  # TODO: Have these tests support other combinations of these values
-  Encoding.default_internal = "UTF-8"
-  Encoding.default_external = "UTF-8"
-end
+require "logger"
 
 class TestERBTemplate < ActiveSupport::TestCase
-  ERBHandler = ActionView::Template::Handlers::ERB
+  ERBHandler = ActionView::Template::Handlers::ERB.new
+
+  class LookupContext
+    def disable_cache
+      yield
+    end
+  end
 
   class Context
+    attr_accessor :_template
+
     def initialize
       @output_buffer = "original"
+      @_virtual_path = nil
     end
 
     def hello
@@ -21,15 +24,18 @@ class TestERBTemplate < ActiveSupport::TestCase
 
     def partial
       ActionView::Template.new(
-        "<%= @_virtual_path %>",
+        "<%= @_template.virtual_path %>",
         "partial",
         ERBHandler,
         :virtual_path => "partial"
       )
     end
 
+    def lookup_context
+      @lookup_context ||= LookupContext.new
+    end
+
     def logger
-      require "logger"
       Logger.new(STDERR)
     end
 
@@ -38,16 +44,16 @@ class TestERBTemplate < ActiveSupport::TestCase
     end
   end
 
-  def new_template(body = "<%= hello %>", handler = ERBHandler, details = {})
-    ActionView::Template.new(body, "hello template", ERBHandler, {:virtual_path => "hello"})
+  def new_template(body = "<%= hello %>", details = {})
+    ActionView::Template.new(body, "hello template", ERBHandler, {:virtual_path => "hello"}.merge!(details))
   end
 
   def render(locals = {})
-    @template.render(@obj, locals)
+    @template.render(@context, locals)
   end
 
   def setup
-    @obj = Context.new
+    @context = Context.new
   end
 
   def test_basic_template
@@ -55,24 +61,96 @@ class TestERBTemplate < ActiveSupport::TestCase
     assert_equal "Hello", render
   end
 
+  def test_template_loses_its_source_after_rendering
+    @template = new_template
+    render
+    assert_nil @template.source
+  end
+
+  def test_template_does_not_lose_its_source_after_rendering_if_it_does_not_have_a_virtual_path
+    @template = new_template("Hello", :virtual_path => nil)
+    render
+    assert_equal "Hello", @template.source
+  end
+
   def test_locals
     @template = new_template("<%= my_local %>")
+    @template.locals = [:my_local]
     assert_equal "I'm a local", render(:my_local => "I'm a local")
   end
 
   def test_restores_buffer
     @template = new_template
     assert_equal "Hello", render
-    assert_equal "original", @obj.my_buffer
+    assert_equal "original", @context.my_buffer
   end
 
   def test_virtual_path
-    @template = new_template("<%= @_virtual_path %>" \
+    @template = new_template("<%= @_template.virtual_path %>" \
                              "<%= partial.render(self, {}) %>" \
-                             "<%= @_virtual_path %>")
+                             "<%= @_template.virtual_path %>")
     assert_equal "hellopartialhello", render
   end
 
+  def test_refresh_with_templates
+    @template = new_template("Hello", :virtual_path => "test/foo/bar")
+    @template.locals = [:key]
+    @context.lookup_context.expects(:find_template).with("bar", %w(test/foo), false, [:key]).returns("template")
+    assert_equal "template", @template.refresh(@context)
+  end
+
+  def test_refresh_with_partials
+    @template = new_template("Hello", :virtual_path => "test/_foo")
+    @template.locals = [:key]
+    @context.lookup_context.expects(:find_template).with("foo", %w(test), true, [:key]).returns("partial")
+    assert_equal "partial", @template.refresh(@context)
+  end
+
+  def test_refresh_raises_an_error_without_virtual_path
+    @template = new_template("Hello", :virtual_path => nil)
+    assert_raise RuntimeError do
+      @template.refresh(@context)
+    end
+  end
+
+  def test_template_expire_sets_the_timestamp_to_1970
+    @template = new_template("Hello", :updated_at => Time.utc(2010))
+    assert_equal Time.utc(2010), @template.updated_at
+    @template.expire!
+    assert_equal Time.utc(1970), @template.updated_at
+  end
+
+  def test_template_rerender_renders_a_template_like_self
+    @template = new_template("Hello", :virtual_path => "test/foo_bar")
+    @context.expects(:render).with(:template => "test/foo_bar").returns("template")
+    assert_equal "template", @template.rerender(@context)
+  end
+
+  def test_template_rerender_renders_a_root_template_like_self
+    @template = new_template("Hello", :virtual_path => "foo_bar")
+    @context.expects(:render).with(:template => "foo_bar").returns("template")
+    assert_equal "template", @template.rerender(@context)
+  end
+
+  def test_template_rerender_renders_a_partial_like_self
+    @template = new_template("Hello", :virtual_path => "test/_foo_bar")
+    @context.expects(:render).with(:partial => "test/foo_bar").returns("partial")
+    assert_equal "partial", @template.rerender(@context)
+  end
+
+  def test_template_rerender_renders_a_root_partial_like_self
+    @template = new_template("Hello", :virtual_path => "_foo_bar")
+    @context.expects(:render).with(:partial => "foo_bar").returns("partial")
+    assert_equal "partial", @template.rerender(@context)
+  end
+
+  def test_rerender_raises_an_error_without_virtual_path
+    @template = new_template("Hello", :virtual_path => nil)
+    assert_raise RuntimeError do
+      @template.rerender(@context)
+    end
+  end
+
   if "ruby".encoding_aware?
     def test_resulting_string_is_utf8
       @template = new_template
@@ -89,12 +167,11 @@ class TestERBTemplate < ActiveSupport::TestCase
     # is set to something other than UTF-8, we don't
     # get any errors and get back a UTF-8 String.
     def test_default_external_works
-      Encoding.default_external = "ISO-8859-1"
-      @template = new_template("hello \xFCmlat")
-      assert_equal Encoding::UTF_8, render.encoding
-      assert_equal "hello \u{fc}mlat", render
-    ensure
-      Encoding.default_external = "UTF-8"
+      with_external_encoding "ISO-8859-1" do
+        @template = new_template("hello \xFCmlat")
+        assert_equal Encoding::UTF_8, render.encoding
+        assert_equal "hello \u{fc}mlat", render
+      end
     end
 
     def test_encoding_can_be_specified_with_magic_comment
@@ -108,14 +185,14 @@ class TestERBTemplate < ActiveSupport::TestCase
     # inside Rails.
     def test_lying_with_magic_comment
       assert_raises(ActionView::Template::Error) do
-        @template = new_template("# encoding: UTF-8\nhello \xFCmlat")
+        @template = new_template("# encoding: UTF-8\nhello \xFCmlat", :virtual_path => nil)
         render
       end
     end
 
     def test_encoding_can_be_specified_with_magic_comment_in_erb
       with_external_encoding Encoding::UTF_8 do
-        @template = new_template("<%# encoding: ISO-8859-1 %>hello \xFCmlat")
+        @template = new_template("<%# encoding: ISO-8859-1 %>hello \xFCmlat", :virtual_path => nil)
         result = render
         assert_equal Encoding::UTF_8, render.encoding
         assert_equal "hello \u{fc}mlat", render
@@ -124,16 +201,17 @@ class TestERBTemplate < ActiveSupport::TestCase
 
     def test_error_when_template_isnt_valid_utf8
       assert_raises(ActionView::Template::Error, /\xFC/) do
-        @template = new_template("hello \xFCmlat")
+        @template = new_template("hello \xFCmlat", :virtual_path => nil)
         render
       end
     end
 
     def with_external_encoding(encoding)
-      old, Encoding.default_external = Encoding.default_external, encoding
+      old = Encoding.default_external
+      silence_warnings { Encoding.default_external = encoding }
       yield
     ensure
-      Encoding.default_external = old
+      silence_warnings { Encoding.default_external = old }
     end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/test/template/test_case_test.rb b/actionpack/test/template/test_case_test.rb
index a0c46f8a59..11c355dc6d 100644
--- a/actionpack/test/template/test_case_test.rb
+++ b/actionpack/test/template/test_case_test.rb
@@ -112,7 +112,59 @@ module ActionView
       @controller.controller_path = 'test'
 
       @customers = [stub(:name => 'Eloy'), stub(:name => 'Manfred')]
-      assert_match /Hello: EloyHello: Manfred/, render(:partial => 'test/from_helper')
+      assert_match(/Hello: EloyHello: Manfred/, render(:partial => 'test/from_helper'))
+    end
+  end
+
+  class ControllerHelperMethod < ActionView::TestCase
+    module SomeHelper
+      def some_method
+        render :partial => 'test/from_helper'
+      end
+    end
+
+    helper SomeHelper
+
+    test "can call a helper method defined on the current controller from a helper" do
+      @controller.singleton_class.class_eval <<-EOF, __FILE__, __LINE__ + 1
+        def render_from_helper
+          'controller_helper_method'
+        end
+      EOF
+      @controller.class.helper_method :render_from_helper
+
+      assert_equal 'controller_helper_method', some_method
+    end
+  end
+
+  class AssignsTest < ActionView::TestCase
+    setup do
+      ActiveSupport::Deprecation.stubs(:warn)
+    end
+
+    test "_assigns delegates to user_defined_ivars" do
+      self.expects(:view_assigns)
+      _assigns
+    end
+
+    test "_assigns is deprecated" do
+      ActiveSupport::Deprecation.expects(:warn)
+      _assigns
+    end
+  end
+
+  class ViewAssignsTest < ActionView::TestCase
+    test "view_assigns returns a Hash of user defined ivars" do
+      @a = 'b'
+      @c = 'd'
+      assert_equal({:a => 'b', :c => 'd'}, view_assigns)
+    end
+
+    test "view_assigns excludes internal ivars" do
+      INTERNAL_IVARS.each do |ivar|
+        assert defined?(ivar), "expected #{ivar} to be defined"
+        assert !view_assigns.keys.include?(ivar.sub('@','').to_sym), "expected #{ivar} to be excluded from view_assigns"
+      end
     end
   end
 
@@ -172,7 +224,7 @@ module ActionView
 
     test "is able to use named routes" do
       with_routing do |set|
-        set.draw { |map| resources :contents }
+        set.draw { resources :contents }
         assert_equal 'http://test.host/contents/new', new_content_url
         assert_equal 'http://test.host/contents/1',   content_url(:id => 1)
       end
@@ -180,7 +232,7 @@ module ActionView
 
     test "named routes can be used from helper included in view" do
       with_routing do |set|
-        set.draw { |map| resources :contents }
+        set.draw { resources :contents }
         _helpers.module_eval do
           def render_from_helper
             new_content_url
@@ -201,7 +253,7 @@ module ActionView
       @controller.controller_path = "test"
 
       @customers = [stub(:name => 'Eloy'), stub(:name => 'Manfred')]
-      assert_match /Hello: EloyHello: Manfred/, render(:file => 'test/list')
+      assert_match(/Hello: EloyHello: Manfred/, render(:file => 'test/list'))
     end
 
     test "is able to render partials from templates and also use instance variables after view has been referenced" do
@@ -210,7 +262,7 @@ module ActionView
       view
 
       @customers = [stub(:name => 'Eloy'), stub(:name => 'Manfred')]
-      assert_match /Hello: EloyHello: Manfred/, render(:file => 'test/list')
+      assert_match(/Hello: EloyHello: Manfred/, render(:file => 'test/list'))
     end
 
   end
@@ -253,4 +305,17 @@ module ActionView
       end
     end
   end
+
+  module AHelperWithInitialize
+    def initialize(*)
+      super
+      @called_initialize = true
+    end
+  end
+
+  class AHelperWithInitializeTest < ActionView::TestCase
+    test "the helper's initialize was actually called" do
+      assert @called_initialize
+    end
+  end
 end
diff --git a/actionpack/test/template/test_test.rb b/actionpack/test/template/test_test.rb
index 68e790cf46..3d0bbba435 100644
--- a/actionpack/test/template/test_test.rb
+++ b/actionpack/test/template/test_test.rb
@@ -39,7 +39,7 @@ class PeopleHelperTest < ActionView::TestCase
     with_test_route_set do
       person = mock(:name => "David")
       person.class.extend ActiveModel::Naming
-      expects(:mocha_mock_path).with(person).returns("/people/1")
+      _routes.url_helpers.expects(:hash_for_mocha_mock_path).with(person).returns("/people/1")
       assert_equal '<a href="/people/1">David</a>', link_to_person(person)
     end
   end
@@ -47,7 +47,7 @@ class PeopleHelperTest < ActionView::TestCase
   private
     def with_test_route_set
       with_routing do |set|
-        set.draw do |map|
+        set.draw do
           match 'people', :to => 'people#index', :as => :people
         end
         yield
diff --git a/actionpack/test/template/text_helper_test.rb b/actionpack/test/template/text_helper_test.rb
index d22b9fe406..d0d4286393 100644
--- a/actionpack/test/template/text_helper_test.rb
+++ b/actionpack/test/template/text_helper_test.rb
@@ -1,4 +1,4 @@
-# encoding: us-ascii
+# encoding: utf-8
 require 'abstract_unit'
 require 'testing_sandbox'
 
@@ -99,7 +99,7 @@ class TextHelperTest < ActionView::TestCase
   def test_highlight_should_be_html_safe
     assert highlight("This is a beautiful morning", "beautiful").html_safe?
   end
- 
+
   def test_highlight
     assert_equal(
       "This is a <strong class=\"highlight\">beautiful</strong> morning",
@@ -415,6 +415,12 @@ class TextHelperTest < ActionView::TestCase
     link10_raw    = 'http://www.mail-archive.com/ruby-talk@ruby-lang.org/'
     link10_result = generate_result(link10_raw)
     assert_equal %(<p>#{link10_result} Link</p>), auto_link("<p>#{link10_raw} Link</p>")
+
+    link11_raw    = 'http://asakusa.rubyist.net/'
+    link11_result = generate_result(link11_raw)
+    with_kcode 'u' do
+      assert_equal %(浅草.rbの公式サイトはこちら#{link11_result}), auto_link("浅草.rbの公式サイトはこちら#{link11_raw}")
+    end
   end
 
   def test_auto_link_should_sanitize_input_when_sanitize_option_is_not_false
@@ -430,7 +436,7 @@ class TextHelperTest < ActionView::TestCase
   def test_auto_link_other_protocols
     ftp_raw = 'ftp://example.com/file.txt'
     assert_equal %(Download #{generate_result(ftp_raw)}), auto_link("Download #{ftp_raw}")
-    
+
     file_scheme   = 'file:///home/username/RomeoAndJuliet.pdf'
     z39_scheme    = 'z39.50r://host:696/db'
     chrome_scheme = 'chrome://package/section/path'
@@ -452,7 +458,7 @@ class TextHelperTest < ActionView::TestCase
     assert_equal linked3, auto_link(linked3)
     assert_equal linked4, auto_link(linked4)
     assert_equal linked5, auto_link(linked5)
-    
+
     linked_email = %Q(<a href="mailto:david@loudthinking.com">Mail me</a>)
     assert_equal linked_email, auto_link(linked_email)
   end
@@ -491,13 +497,13 @@ class TextHelperTest < ActionView::TestCase
     url = "http://api.rubyonrails.com/Foo.html"
     email = "fantabulous@shiznadel.ic"
 
-    assert_equal %(<p><a href="#{url}">#{url[0...7]}...</a><br /><a href="mailto:#{email}">#{email[0...7]}...</a><br /></p>), auto_link("<p>#{url}<br />#{email}<br /></p>") { |url| truncate(url, :length => 10) }
+    assert_equal %(<p><a href="#{url}">#{url[0...7]}...</a><br /><a href="mailto:#{email}">#{email[0...7]}...</a><br /></p>), auto_link("<p>#{url}<br />#{email}<br /></p>") { |_url| truncate(_url, :length => 10) }
   end
-  
+
   def test_auto_link_with_block_with_html
     pic = "http://example.com/pic.png"
     url = "http://example.com/album?a&b=c"
-    
+
     assert_equal %(My pic: <a href="#{pic}"><img src="#{pic}" width="160px"></a> -- full album here #{generate_result(url)}), auto_link("My pic: #{pic} -- full album here #{url}") { |link|
       if link =~ /\.(jpg|gif|png|bmp|tif)$/i
         raw %(<img src="#{link}" width="160px">)
@@ -512,7 +518,7 @@ class TextHelperTest < ActionView::TestCase
       auto_link("Welcome to my new blog at http://www.myblog.com/. Please e-mail me at me@email.com.",
                 :link => :all, :html => { :class => "menu", :target => "_blank" })
   end
-  
+
   def test_auto_link_with_multiple_trailing_punctuations
     url = "http://youtube.com"
     url_result = generate_result(url)
diff --git a/actionpack/test/template/translation_helper_test.rb b/actionpack/test/template/translation_helper_test.rb
index 1be418a206..9b5c6d127c 100644
--- a/actionpack/test/template/translation_helper_test.rb
+++ b/actionpack/test/template/translation_helper_test.rb
@@ -4,60 +4,78 @@ class TranslationHelperTest < ActiveSupport::TestCase
   include ActionView::Helpers::TagHelper
   include ActionView::Helpers::TranslationHelper
 
-  attr_reader :request
+  attr_reader :request, :view
+
   def setup
+    I18n.backend.store_translations(:en,
+      :translations => {
+        :templates => {
+          :found => { :foo => 'Foo' },
+          :array => { :foo => { :bar => 'Foo Bar' } }
+        },
+        :foo => 'Foo',
+        :hello => '<a>Hello World</a>',
+        :html => '<a>Hello World</a>',
+        :hello_html => '<a>Hello World</a>',
+        :array_html => %w(foo bar),
+        :array => %w(foo bar)
+      }
+    )
+    @view = ::ActionView::Base.new(ActionController::Base.view_paths, {})
   end
-  
-  def test_delegates_to_i18n_setting_the_raise_option
-    I18n.expects(:translate).with(:foo, :locale => 'en', :raise => true).returns("")
+
+  def test_delegates_to_i18n_setting_the_rescue_format_option_to_html
+    I18n.expects(:translate).with(:foo, :locale => 'en', :rescue_format => :html).returns("")
     translate :foo, :locale => 'en'
   end
-  
+
+  def test_delegates_localize_to_i18n
+    @time = Time.utc(2008, 7, 8, 12, 18, 38)
+    I18n.expects(:localize).with(@time)
+    localize @time
+  end
+
   def test_returns_missing_translation_message_wrapped_into_span
-    expected = '<span class="translation_missing">en, foo</span>'
-    assert_equal expected, translate(:foo)
+    expected = '<span class="translation_missing" title="translation missing: en.translations.missing">Missing</span>'
+    assert_equal expected, translate(:"translations.missing")
+  end
+
+  def test_returns_missing_translation_message_using_nil_as_rescue_format
+    expected = 'translation missing: en.translations.missing'
+    assert_equal expected, translate(:"translations.missing", :rescue_format => nil)
   end
 
   def test_translation_returning_an_array
-    I18n.expects(:translate).with(:foo, :raise => true).returns(["foo", "bar"])
-    assert_equal ["foo", "bar"], translate(:foo)
+    expected = %w(foo bar)
+    assert_equal expected, translate(:"translations.array")
   end
 
-  def test_delegates_localize_to_i18n
-    @time = Time.utc(2008, 7, 8, 12, 18, 38)
-    I18n.expects(:localize).with(@time)
-    localize @time
+  def test_finds_translation_scoped_by_partial
+    assert_equal 'Foo', view.render(:file => 'translations/templates/found').strip
   end
-  
-  def test_scoping_by_partial
-    I18n.expects(:translate).with("test.translation.helper", :raise => true).returns("helper")
-    @view = ActionView::Base.new(ActionController::Base.view_paths, {})
-    assert_equal "helper", @view.render(:file => "test/translation")
+
+  def test_finds_array_of_translations_scoped_by_partial
+    assert_equal 'Foo Bar', @view.render(:file => 'translations/templates/array').strip
   end
 
-  def test_scoping_by_partial_of_an_array
-    I18n.expects(:translate).with("test.scoped_translation.foo.bar", :raise => true).returns(["foo", "bar"])
-    @view = ActionView::Base.new(ActionController::Base.view_paths, {})
-    assert_equal "foobar", @view.render(:file => "test/scoped_translation")
+  def test_missing_translation_scoped_by_partial
+    expected = '<span class="translation_missing" title="translation missing: en.translations.templates.missing.missing">Missing</span>'
+    assert_equal expected, view.render(:file => 'translations/templates/missing').strip
   end
-  
+
   def test_translate_does_not_mark_plain_text_as_safe_html
-    I18n.expects(:translate).with("hello", :raise => true).returns("Hello World")
-    assert_equal false, translate("hello").html_safe?
+    assert_equal false, translate(:'translations.hello').html_safe?
   end
 
   def test_translate_marks_translations_named_html_as_safe_html
-    I18n.expects(:translate).with("html", :raise => true).returns("<a>Hello World</a>")
-    assert translate("html").html_safe?
+    assert translate(:'translations.html').html_safe?
   end
 
   def test_translate_marks_translations_with_a_html_suffix_as_safe_html
-    I18n.expects(:translate).with("hello_html", :raise => true).returns("<a>Hello World</a>")
-    assert translate("hello_html").html_safe?
+    assert translate(:'translations.hello_html').html_safe?
   end
 
   def test_translation_returning_an_array_ignores_html_suffix
-    I18n.expects(:translate).with(:foo_html, :raise => true).returns(["foo", "bar"])
-    assert_equal ["foo", "bar"], translate(:foo_html)
+    assert_equal ["foo", "bar"], translate(:'translations.array_html')
   end
 end
diff --git a/actionpack/test/template/url_helper_test.rb b/actionpack/test/template/url_helper_test.rb
index d59bbec4a9..fc330f7a73 100644
--- a/actionpack/test/template/url_helper_test.rb
+++ b/actionpack/test/template/url_helper_test.rb
@@ -9,7 +9,7 @@ class UrlHelperTest < ActiveSupport::TestCase
   # or request.
   #
   # In those cases, we'll set up a simple mock
-  attr_accessor :controller, :request
+  attr_accessor :controller, :request, :_template
 
   routes = ActionDispatch::Routing::RouteSet.new
   routes.draw do
@@ -20,17 +20,11 @@ class UrlHelperTest < ActiveSupport::TestCase
   include routes.url_helpers
 
   include ActionView::Helpers::UrlHelper
+  include ActionView::Helpers::JavaScriptHelper
   include ActionDispatch::Assertions::DomAssertions
   include ActionView::Context
   include RenderERBUtils
 
-  # self.default_url_options = {:host => "www.example.com"}
-
-  # TODO: This shouldn't be needed (see template.rb:53)
-  def assigns
-    {}
-  end
-
   def hash_for(opts = [])
     ActiveSupport::OrderedHash[*([:controller, "foo", :action, "bar"].concat(opts))]
   end
@@ -57,6 +51,14 @@ class UrlHelperTest < ActiveSupport::TestCase
     assert_dom_equal "<form method=\"post\" action=\"http://www.example.com\" class=\"button_to\"><div><input type=\"submit\" value=\"Hello\" /></div></form>", button_to("Hello", "http://www.example.com")
   end
 
+  def test_button_to_with_form_class
+    assert_dom_equal "<form method=\"post\" action=\"http://www.example.com\" class=\"custom-class\"><div><input type=\"submit\" value=\"Hello\" /></div></form>", button_to("Hello", "http://www.example.com", :form_class => 'custom-class')
+  end
+
+  def test_button_to_with_form_class_escapes
+    assert_dom_equal "<form method=\"post\" action=\"http://www.example.com\" class=\"&lt;script&gt;evil_js&lt;/script&gt;\"><div><input type=\"submit\" value=\"Hello\" /></div></form>", button_to("Hello", "http://www.example.com", :form_class => '<script>evil_js</script>')
+  end
+
   def test_button_to_with_query
     assert_dom_equal "<form method=\"post\" action=\"http://www.example.com/q1=v1&amp;q2=v2\" class=\"button_to\"><div><input type=\"submit\" value=\"Hello\" /></div></form>", button_to("Hello", "http://www.example.com/q1=v1&q2=v2")
   end
@@ -76,6 +78,13 @@ class UrlHelperTest < ActiveSupport::TestCase
     )
   end
 
+  def test_button_to_with_javascript_disable_with
+    assert_dom_equal(
+      "<form method=\"post\" action=\"http://www.example.com\" class=\"button_to\"><div><input data-disable-with=\"Greeting...\" type=\"submit\" value=\"Hello\" /></div></form>",
+      button_to("Hello", "http://www.example.com", :disable_with => "Greeting...")
+    )
+  end
+
   def test_button_to_with_remote_and_javascript_confirm
     assert_dom_equal(
       "<form method=\"post\" action=\"http://www.example.com\" class=\"button_to\" data-remote=\"true\"><div><input data-confirm=\"Are you sure?\" type=\"submit\" value=\"Hello\" /></div></form>",
@@ -83,6 +92,20 @@ class UrlHelperTest < ActiveSupport::TestCase
     )
   end
 
+  def test_button_to_with_remote_and_javascript_disable_with
+    assert_dom_equal(
+      "<form method=\"post\" action=\"http://www.example.com\" class=\"button_to\" data-remote=\"true\"><div><input data-disable-with=\"Greeting...\" type=\"submit\" value=\"Hello\" /></div></form>",
+      button_to("Hello", "http://www.example.com", :remote => true, :disable_with => "Greeting...")
+    )
+  end
+
+  def test_button_to_with_remote_and_javascript_confirm_and_javascript_disable_with
+    assert_dom_equal(
+      "<form method=\"post\" action=\"http://www.example.com\" class=\"button_to\" data-remote=\"true\"><div><input data-disable-with=\"Greeting...\" data-confirm=\"Are you sure?\" type=\"submit\" value=\"Hello\" /></div></form>",
+      button_to("Hello", "http://www.example.com", :remote => true, :confirm => "Are you sure?", :disable_with => "Greeting...")
+    )
+  end
+
   def test_button_to_with_remote_false
     assert_dom_equal(
       "<form method=\"post\" action=\"http://www.example.com\" class=\"button_to\"><div><input type=\"submit\" value=\"Hello\" /></div></form>",
@@ -249,12 +272,7 @@ class UrlHelperTest < ActiveSupport::TestCase
 
     assert_equal "<strong>Showing</strong>",
       link_to_unless(true, "Showing", url_hash) { |name|
-        "<strong>#{name}</strong>"
-      }
-
-    assert_equal "<strong>Showing</strong>",
-      link_to_unless(true, "Showing", url_hash) { |name|
-        "<strong>#{name}</strong>"
+        "<strong>#{name}</strong>".html_safe
       }
 
     assert_equal "test",
@@ -350,13 +368,13 @@ class UrlHelperTest < ActiveSupport::TestCase
 
   def test_mail_to_with_javascript
     snippet = mail_to("me@domain.com", "My email", :encode => "javascript")
-    assert_dom_equal "<script type=\"text/javascript\">eval(decodeURIComponent('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%22%6d%61%69%6c%74%6f%3a%6d%65%40%64%6f%6d%61%69%6e%2e%63%6f%6d%22%3e%4d%79%20%65%6d%61%69%6c%3c%2f%61%3e%27%29%3b'))</script>", snippet
+    assert_dom_equal "<script type=\"text/javascript\">eval(decodeURIComponent('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%5c%22%6d%61%69%6c%74%6f%3a%6d%65%40%64%6f%6d%61%69%6e%2e%63%6f%6d%5c%22%3e%4d%79%20%65%6d%61%69%6c%3c%5c%2f%61%3e%27%29%3b'))</script>", snippet
     assert snippet.html_safe?
   end
 
   def test_mail_to_with_javascript_unicode
     snippet = mail_to("unicode@example.com", "únicode", :encode => "javascript")
-    assert_dom_equal "<script type=\"text/javascript\">eval(decodeURIComponent('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%22%6d%61%69%6c%74%6f%3a%75%6e%69%63%6f%64%65%40%65%78%61%6d%70%6c%65%2e%63%6f%6d%22%3e%c3%ba%6e%69%63%6f%64%65%3c%2f%61%3e%27%29%3b'))</script>", snippet
+    assert_dom_equal "<script type=\"text/javascript\">eval(decodeURIComponent('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%5c%22%6d%61%69%6c%74%6f%3a%75%6e%69%63%6f%64%65%40%65%78%61%6d%70%6c%65%2e%63%6f%6d%5c%22%3e%c3%ba%6e%69%63%6f%64%65%3c%5c%2f%61%3e%27%29%3b'))</script>", snippet
     assert snippet.html_safe
   end
 
@@ -382,8 +400,8 @@ class UrlHelperTest < ActiveSupport::TestCase
     assert_dom_equal "<a href=\"&#109;&#97;&#105;&#108;&#116;&#111;&#58;%6d%65@%64%6f%6d%61%69%6e.%63%6f%6d\">&#109;&#101;&#40;&#97;&#116;&#41;&#100;&#111;&#109;&#97;&#105;&#110;&#46;&#99;&#111;&#109;</a>", mail_to("me@domain.com", nil, :encode => "hex", :replace_at => "(at)")
     assert_dom_equal "<a href=\"&#109;&#97;&#105;&#108;&#116;&#111;&#58;%6d%65@%64%6f%6d%61%69%6e.%63%6f%6d\">My email</a>", mail_to("me@domain.com", "My email", :encode => "hex", :replace_at => "(at)")
     assert_dom_equal "<a href=\"&#109;&#97;&#105;&#108;&#116;&#111;&#58;%6d%65@%64%6f%6d%61%69%6e.%63%6f%6d\">&#109;&#101;&#40;&#97;&#116;&#41;&#100;&#111;&#109;&#97;&#105;&#110;&#40;&#100;&#111;&#116;&#41;&#99;&#111;&#109;</a>", mail_to("me@domain.com", nil, :encode => "hex", :replace_at => "(at)", :replace_dot => "(dot)")
-    assert_dom_equal "<script type=\"text/javascript\">eval(decodeURIComponent('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%22%6d%61%69%6c%74%6f%3a%6d%65%40%64%6f%6d%61%69%6e%2e%63%6f%6d%22%3e%4d%79%20%65%6d%61%69%6c%3c%2f%61%3e%27%29%3b'))</script>", mail_to("me@domain.com", "My email", :encode => "javascript", :replace_at => "(at)", :replace_dot => "(dot)")
-    assert_dom_equal "<script type=\"text/javascript\">eval(decodeURIComponent('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%22%6d%61%69%6c%74%6f%3a%6d%65%40%64%6f%6d%61%69%6e%2e%63%6f%6d%22%3e%6d%65%28%61%74%29%64%6f%6d%61%69%6e%28%64%6f%74%29%63%6f%6d%3c%2f%61%3e%27%29%3b'))</script>", mail_to("me@domain.com", nil, :encode => "javascript", :replace_at => "(at)", :replace_dot => "(dot)")
+    assert_dom_equal "<script type=\"text/javascript\">eval(decodeURIComponent('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%5c%22%6d%61%69%6c%74%6f%3a%6d%65%40%64%6f%6d%61%69%6e%2e%63%6f%6d%5c%22%3e%4d%79%20%65%6d%61%69%6c%3c%5c%2f%61%3e%27%29%3b'))</script>", mail_to("me@domain.com", "My email", :encode => "javascript", :replace_at => "(at)", :replace_dot => "(dot)")
+    assert_dom_equal "<script type=\"text/javascript\">eval(decodeURIComponent('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%5c%22%6d%61%69%6c%74%6f%3a%6d%65%40%64%6f%6d%61%69%6e%2e%63%6f%6d%5c%22%3e%6d%65%28%61%74%29%64%6f%6d%61%69%6e%28%64%6f%74%29%63%6f%6d%3c%5c%2f%61%3e%27%29%3b'))</script>", mail_to("me@domain.com", nil, :encode => "javascript", :replace_at => "(at)", :replace_dot => "(dot)")
   end
 
   # TODO: button_to looks at this ... why?
@@ -401,7 +419,7 @@ end
 
 class UrlHelperControllerTest < ActionController::TestCase
   class UrlHelperController < ActionController::Base
-    test_routes do |map|
+    test_routes do
       match 'url_helper_controller_test/url_helper/show/:id',
         :to => 'url_helper_controller_test/url_helper#show',
         :as => :show
@@ -414,12 +432,15 @@ class UrlHelperControllerTest < ActionController::TestCase
         :to => 'url_helper_controller_test/url_helper#show_named_route',
         :as => :show_named_route
 
-      map.connect ":controller/:action/:id"
-      # match "/:controller(/:action(/:id))"
+      match "/:controller(/:action(/:id))"
 
       match 'url_helper_controller_test/url_helper/normalize_recall_params',
         :to => UrlHelperController.action(:normalize_recall),
         :as => :normalize_recall_params
+
+      match '/url_helper_controller_test/url_helper/override_url_helper/default',
+        :to => 'url_helper_controller_test/url_helper#override_url_helper',
+        :as => :override_url_helper
     end
 
     def show
@@ -455,6 +476,15 @@ class UrlHelperControllerTest < ActionController::TestCase
     end
 
     def rescue_action(e) raise e end
+
+    def override_url_helper
+      render :inline => '<%= override_url_helper_path %>'
+    end
+
+    def override_url_helper_path
+      '/url_helper_controller_test/url_helper/override_url_helper/override'
+    end
+    helper_method :override_url_helper_path
   end
 
   tests UrlHelperController
@@ -514,6 +544,11 @@ class UrlHelperControllerTest < ActionController::TestCase
     get :show, :name => '123'
     assert_equal 'ok', @response.body
   end
+
+  def test_url_helper_can_be_overriden
+    get :override_url_helper
+    assert_equal '/url_helper_controller_test/url_helper/override_url_helper/override', @response.body
+  end
 end
 
 class TasksController < ActionController::Base
@@ -555,24 +590,6 @@ class LinkToUnlessCurrentWithControllerTest < ActionController::TestCase
   end
 end
 
-class Workshop
-  extend ActiveModel::Naming
-  include ActiveModel::Conversion
-  attr_accessor :id
-
-  def initialize(id)
-    @id = id
-  end
-
-  def persisted?
-    id.present?
-  end
-
-  def to_s
-    id.to_s
-  end
-end
-
 class Session
   extend ActiveModel::Naming
   include ActiveModel::Conversion
@@ -654,10 +671,10 @@ class PolymorphicControllerTest < ActionController::TestCase
     get :index, :workshop_id => 1
     assert_equal "/workshops/1/sessions\n<a href=\"/workshops/1/sessions\">Session</a>", @response.body
   end
-  
+
   def test_existing_nested_resource
     @controller = SessionsController.new
-  
+
     get :show, :workshop_id => 1, :id => 1
     assert_equal "/workshops/1/sessions/1\n<a href=\"/workshops/1/sessions/1\">Session</a>", @response.body
   end