Merge branch 'master' into active_model

Conflicts:
	activemodel/lib/active_model/core.rb
	activemodel/test/cases/state_machine/event_test.rb
	activemodel/test/cases/state_machine/state_transition_test.rb
	activerecord/lib/active_record/validations.rb
	activerecord/test/cases/validations/i18n_validation_test.rb
	activeresource/lib/active_resource.rb
	activeresource/test/abstract_unit.rb

176 files changed, 4674 insertions, 2477 deletions

diff --git a/actionpack/lib/action_controller.rb b/actionpack/lib/action_controller.rb
index 100a0be1db..dd22bfd617 100644
--- a/actionpack/lib/action_controller.rb
+++ b/actionpack/lib/action_controller.rb
@@ -21,15 +21,9 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #++
 
-begin
-  require 'active_support'
-rescue LoadError
-  activesupport_path = "#{File.dirname(__FILE__)}/../../activesupport/lib"
-  if File.directory?(activesupport_path)
-    $:.unshift activesupport_path
-    require 'active_support'
-  end
-end
+activesupport_path = "#{File.dirname(__FILE__)}/../../activesupport/lib"
+$:.unshift activesupport_path if File.directory?(activesupport_path)
+require 'active_support'
 
 require File.join(File.dirname(__FILE__), "action_pack")
 
@@ -59,7 +53,7 @@ module ActionController
   autoload :Redirector, 'action_controller/base/redirect'
   autoload :Renderer, 'action_controller/base/render'
   autoload :RequestForgeryProtection, 'action_controller/base/request_forgery_protection'
-  autoload :Rescue, 'action_controller/dispatch/rescue'
+  autoload :Rescue, 'action_controller/base/rescue'
   autoload :Resources, 'action_controller/routing/resources'
   autoload :Responder, 'action_controller/base/responder'
   autoload :Routing, 'action_controller/routing'
@@ -72,6 +66,7 @@ module ActionController
   autoload :UrlRewriter, 'action_controller/routing/generation/url_rewriter'
   autoload :UrlWriter, 'action_controller/routing/generation/url_rewriter'
   autoload :Verification, 'action_controller/base/verification'
+  autoload :FilterParameterLogging, 'action_controller/base/filter_parameter_logging'
 
   module Assertions
     autoload :DomAssertions, 'action_controller/testing/assertions/dom'
diff --git a/actionpack/lib/action_controller/abstract.rb b/actionpack/lib/action_controller/abstract.rb
index 3f5c4a185f..f46b91627f 100644
--- a/actionpack/lib/action_controller/abstract.rb
+++ b/actionpack/lib/action_controller/abstract.rb
@@ -1,5 +1,9 @@
+require "active_support/core_ext/module/attr_internal"
+require "active_support/core_ext/module/delegation"
+
 module AbstractController
   autoload :Base,           "action_controller/abstract/base"
+  autoload :Benchmarker,    "action_controller/abstract/benchmarker"
   autoload :Callbacks,      "action_controller/abstract/callbacks"
   autoload :Helpers,        "action_controller/abstract/helpers"
   autoload :Layouts,        "action_controller/abstract/layouts"
@@ -7,4 +11,4 @@ module AbstractController
   autoload :Renderer,       "action_controller/abstract/renderer"
   # === Exceptions
   autoload :ActionNotFound, "action_controller/abstract/exceptions"
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/abstract/base.rb b/actionpack/lib/action_controller/abstract/base.rb
index ade7719cc0..87083a4d79 100644
--- a/actionpack/lib/action_controller/abstract/base.rb
+++ b/actionpack/lib/action_controller/abstract/base.rb
@@ -1,41 +1,115 @@
+require 'active_support/core_ext/module/attr_internal'
+
 module AbstractController
+  class Error < StandardError; end
+
+  class DoubleRenderError < Error
+    DEFAULT_MESSAGE = "Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like \"redirect_to(...) and return\"."
+
+    def initialize(message = nil)
+      super(message || DEFAULT_MESSAGE)
+    end
+  end
+
   class Base
-    
     attr_internal :response_body
     attr_internal :response_obj
     attr_internal :action_name
-    
-    def self.process(action)
-      new.process(action)
-    end
-    
-    def self.inherited(klass)
+
+    class << self
+      attr_reader :abstract
+
+      def abstract!
+        @abstract = true
+      end
+
+      alias_method :abstract?, :abstract
+
+      def inherited(klass)
+        ::AbstractController::Base.subclasses << klass.to_s
+        super
+      end
+
+      def subclasses
+        @subclasses ||= []
+      end
+
+      def internal_methods
+        controller = self
+        controller = controller.superclass until controller.abstract?
+        controller.public_instance_methods(true)
+      end
+
+      def process(action)
+        new.process(action.to_s)
+      end
+
+      def hidden_actions
+        []
+      end
+
+      def action_methods
+        @action_methods ||=
+          # All public instance methods of this class, including ancestors
+          public_instance_methods(true).map { |m| m.to_s }.to_set -
+          # Except for public instance methods of Base and its ancestors
+          internal_methods.map { |m| m.to_s } +
+          # Be sure to include shadowed public instance methods of this class
+          public_instance_methods(false).map { |m| m.to_s } -
+          # And always exclude explicitly hidden actions
+          hidden_actions
+      end
     end
-    
+
+    abstract!
+
     def initialize
       self.response_obj = {}
     end
-    
-    def process(action_name)
-      unless respond_to_action?(action_name)
-        raise ActionNotFound, "The action '#{action_name}' could not be found"
+
+    def process(action)
+      @_action_name = action_name = action.to_s
+
+      unless action_name = method_for_action(action_name)
+        raise ActionNotFound, "The action '#{action}' could not be found"
       end
-      
-      @_action_name = action_name
-      process_action
-      self.response_obj[:body] = self.response_body
+
+      process_action(action_name)
       self
     end
-    
+
   private
-  
-    def process_action
-      respond_to?(action_name) ? send(action_name) : send(:action_missing, action_name)
+    def action_methods
+      self.class.action_methods
+    end
+
+    def action_method?(action)
+      action_methods.include?(action)
     end
-    
-    def respond_to_action?(action_name)
-      respond_to?(action_name) || respond_to?(:action_missing, true)
+
+    # It is possible for respond_to?(action_name) to be false and
+    # respond_to?(:action_missing) to be false if respond_to_action?
+    # is overridden in a subclass. For instance, ActionController::Base
+    # overrides it to include the case where a template matching the
+    # action_name is found.
+    def process_action(method_name)
+      send_action(method_name)
+    end
+
+    alias send_action send
+
+    def _handle_action_missing
+      action_missing(@_action_name)
+    end
+
+    # Override this to change the conditions that will raise an
+    # ActionNotFound error. If you accept a difference case,
+    # you must handle it by also overriding process_action and
+    # handling the case.
+    def method_for_action(action_name)
+      if action_method?(action_name) then action_name
+      elsif respond_to?(:action_missing, true) then "_handle_action_missing"
+      end
     end
-    
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/abstract/benchmarker.rb b/actionpack/lib/action_controller/abstract/benchmarker.rb
new file mode 100644
index 0000000000..6999329144
--- /dev/null
+++ b/actionpack/lib/action_controller/abstract/benchmarker.rb
@@ -0,0 +1,28 @@
+module AbstractController
+  module Benchmarker
+    extend ActiveSupport::Concern
+
+    depends_on Logger
+
+    module ClassMethods
+      def benchmark(title, log_level = ::Logger::DEBUG, use_silence = true)
+        if logger && logger.level >= log_level
+          result = nil
+          ms = Benchmark.ms { result = use_silence ? silence { yield } : yield }
+          logger.add(log_level, "#{title} (#{('%.1f' % ms)}ms)")
+          result
+        else
+          yield
+        end
+      end
+
+      # Silences the logger for the duration of the block.
+      def silence
+        old_logger_level, logger.level = logger.level, ::Logger::ERROR if logger
+        yield
+      ensure
+        logger.level = old_logger_level if logger
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/abstract/callbacks.rb b/actionpack/lib/action_controller/abstract/callbacks.rb
index c8b509081c..6c67315c58 100644
--- a/actionpack/lib/action_controller/abstract/callbacks.rb
+++ b/actionpack/lib/action_controller/abstract/callbacks.rb
@@ -1,28 +1,31 @@
 module AbstractController
   module Callbacks
-    setup do
-      include ActiveSupport::NewCallbacks
-      define_callbacks :process_action      
+    extend ActiveSupport::Concern
+
+    depends_on ActiveSupport::NewCallbacks
+
+    included do
+      define_callbacks :process_action, "response_body"
     end
-    
-    def process_action
-      _run_process_action_callbacks(action_name) do
+
+    def process_action(method_name)
+      _run_process_action_callbacks(method_name) do
         super
       end
     end
-    
+
     module ClassMethods
       def _normalize_callback_options(options)
         if only = options[:only]
-          only = Array(only).map {|o| "action_name == :#{o}"}.join(" || ")
+          only = Array(only).map {|o| "action_name == '#{o}'"}.join(" || ")
           options[:per_key] = {:if => only}
         end
         if except = options[:except]
-          except = Array(except).map {|e| "action_name == :#{e}"}.join(" || ")          
+          except = Array(except).map {|e| "action_name == '#{e}'"}.join(" || ")
           options[:per_key] = {:unless => except}
         end
       end
-      
+
       [:before, :after, :around].each do |filter|
         class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
           def #{filter}_filter(*names, &blk)
@@ -33,8 +36,28 @@ module AbstractController
               process_action_callback(:#{filter}, name, options)
             end
           end
+
+          def prepend_#{filter}_filter(*names, &blk)
+            options = names.last.is_a?(Hash) ? names.pop : {}
+            _normalize_callback_options(options)
+            names.push(blk) if block_given?
+            names.each do |name|
+              process_action_callback(:#{filter}, name, options.merge(:prepend => true))
+            end
+          end
+
+          def skip_#{filter}_filter(*names, &blk)
+            options = names.last.is_a?(Hash) ? names.pop : {}
+            _normalize_callback_options(options)
+            names.push(blk) if block_given?
+            names.each do |name|
+              skip_process_action_callback(:#{filter}, name, options)
+            end
+          end
+
+          alias_method :append_#{filter}_filter, :#{filter}_filter
         RUBY_EVAL
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/abstract/exceptions.rb b/actionpack/lib/action_controller/abstract/exceptions.rb
index ec4680629b..2f6c55f068 100644
--- a/actionpack/lib/action_controller/abstract/exceptions.rb
+++ b/actionpack/lib/action_controller/abstract/exceptions.rb
@@ -1,3 +1,3 @@
 module AbstractController
-  class ActionNotFound < StandardError ; end
-end
\ No newline at end of file
+  class ActionNotFound < StandardError; end
+end
diff --git a/actionpack/lib/action_controller/abstract/helpers.rb b/actionpack/lib/action_controller/abstract/helpers.rb
index 1f0b38417b..43832f1e2d 100644
--- a/actionpack/lib/action_controller/abstract/helpers.rb
+++ b/actionpack/lib/action_controller/abstract/helpers.rb
@@ -1,19 +1,14 @@
 module AbstractController
   module Helpers
+    extend ActiveSupport::Concern
+
     depends_on Renderer
-    
-    setup do
+
+    included do
       extlib_inheritable_accessor :master_helper_module
       self.master_helper_module = Module.new
     end
-  
-    # def self.included(klass)
-    #   klass.class_eval do
-    #     extlib_inheritable_accessor :master_helper_module
-    #     self.master_helper_module = Module.new
-    #   end
-    # end
-    
+
     def _action_view
       @_action_view ||= begin
         av = super
@@ -21,19 +16,38 @@ module AbstractController
         av
       end
     end
-    
+
     module ClassMethods
       def inherited(klass)
         klass.master_helper_module = Module.new
         klass.master_helper_module.__send__ :include, master_helper_module
-        
+
         super
       end
-      
+
+      # Makes all the (instance) methods in the helper module available to templates rendered through this controller.
+      # See ActionView::Helpers (link:classes/ActionView/Helpers.html) for more about making your own helper modules
+      # available to the templates.
       def add_template_helper(mod)
         master_helper_module.module_eval { include mod }
       end
-      
+
+      # Declare a controller method as a helper. For example, the following
+      # makes the +current_user+ controller method available to the view:
+      #   class ApplicationController < ActionController::Base
+      #     helper_method :current_user, :logged_in?
+      #
+      #     def current_user
+      #       @current_user ||= User.find_by_id(session[:user])
+      #     end
+      #
+      #      def logged_in?
+      #        current_user != nil
+      #      end
+      #   end
+      #
+      # In a view:
+      #  <% if logged_in? -%>Welcome, <%= current_user.name %><% end -%>
       def helper_method(*meths)
         meths.flatten.each do |meth|
           master_helper_module.class_eval <<-ruby_eval, __FILE__, __LINE__ + 1
@@ -43,17 +57,16 @@ module AbstractController
           ruby_eval
         end
       end
-      
-      def helper(*args, &blk)
+
+      def helper(*args, &block)
         args.flatten.each do |arg|
           case arg
           when Module
             add_template_helper(arg)
           end
         end
-        master_helper_module.module_eval(&blk) if block_given?
+        master_helper_module.module_eval(&block) if block_given?
       end
     end
-    
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/abstract/layouts.rb b/actionpack/lib/action_controller/abstract/layouts.rb
index 478b301a26..b3f21f7b22 100644
--- a/actionpack/lib/action_controller/abstract/layouts.rb
+++ b/actionpack/lib/action_controller/abstract/layouts.rb
@@ -1,25 +1,34 @@
 module AbstractController
   module Layouts
-    
+    extend ActiveSupport::Concern
+
     depends_on Renderer
-        
+
+    included do
+      extlib_inheritable_accessor :_layout_conditions
+      self._layout_conditions = {}
+    end
+
     module ClassMethods
-      def layout(layout)
+      def layout(layout, conditions = {})
         unless [String, Symbol, FalseClass, NilClass].include?(layout.class)
           raise ArgumentError, "Layouts must be specified as a String, Symbol, false, or nil"
         end
-        
+
+        conditions.each {|k, v| conditions[k] = Array(v).map {|a| a.to_s} }
+        self._layout_conditions = conditions
+
         @_layout = layout || false # Converts nil to false
         _write_layout_method
       end
-      
+
       def _implied_layout_name
         name.underscore
       end
-      
+
       # Takes the specified layout and creates a _layout method to be called
       # by _default_layout
-      # 
+      #
       # If the specified layout is a:
       # String:: return the string
       # Symbol:: call the method specified by the symbol
@@ -30,15 +39,15 @@ module AbstractController
       def _write_layout_method
         case @_layout
         when String
-          self.class_eval %{def _layout() #{@_layout.inspect} end}
+          self.class_eval %{def _layout(details) #{@_layout.inspect} end}
         when Symbol
-          self.class_eval %{def _layout() #{@_layout} end}
+          self.class_eval %{def _layout(details) #{@_layout} end}
         when false
-          self.class_eval %{def _layout() end}
+          self.class_eval %{def _layout(details) end}
         else
           self.class_eval %{
-            def _layout
-              if view_paths.find_by_parts?("#{_implied_layout_name}", formats, "layouts")
+            def _layout(details)
+              if view_paths.find_by_parts?("#{_implied_layout_name}", details, "layouts")
                 "#{_implied_layout_name}"
               else
                 super
@@ -48,35 +57,51 @@ module AbstractController
         end
       end
     end
-    
-    def _render_template(template, options)
-      _action_view._render_template_with_layout(template, options[:_layout])
-    end
-        
+
   private
-  
-    def _layout() end # This will be overwritten
-    
-    def _layout_for_name(name)
+    # This will be overwritten
+    def _layout(details)
+    end
+
+    # :api: plugin
+    # ====
+    # Override this to mutate the inbound layout name
+    def _layout_for_name(name, details = {:formats => formats})
       unless [String, FalseClass, NilClass].include?(name.class)
         raise ArgumentError, "String, false, or nil expected; you passed #{name.inspect}"
       end
-      
-      name && view_paths.find_by_parts(name, formats, "layouts")
+
+      name && view_paths.find_by_parts(name, details, _layout_prefix(name))
     end
-    
-    def _default_layout(require_layout = false)
-      if require_layout && !_layout
-        raise ArgumentError, 
+
+    # TODO: Decide if this is the best hook point for the feature
+    def _layout_prefix(name)
+      "layouts"
+    end
+
+    def _default_layout(require_layout = false, details = {:formats => formats})
+      if require_layout && _action_has_layout? && !_layout(details)
+        raise ArgumentError,
           "There was no default layout for #{self.class} in #{view_paths.inspect}"
       end
-        
+
       begin
-        layout = _layout_for_name(_layout)
+        _layout_for_name(_layout(details), details) if _action_has_layout?
       rescue NameError => e
-        raise NoMethodError, 
+        raise NoMethodError,
           "You specified #{@_layout.inspect} as the layout, but no such method was found"
       end
     end
+
+    def _action_has_layout?
+      conditions = _layout_conditions
+      if only = conditions[:only]
+        only.include?(action_name)
+      elsif except = conditions[:except]
+        !except.include?(action_name)
+      else
+        true
+      end
+    end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/abstract/logger.rb b/actionpack/lib/action_controller/abstract/logger.rb
index 4117369bd4..d6fa843485 100644
--- a/actionpack/lib/action_controller/abstract/logger.rb
+++ b/actionpack/lib/action_controller/abstract/logger.rb
@@ -1,7 +1,45 @@
+require 'active_support/core_ext/class/attribute_accessors'
+require 'active_support/core_ext/logger'
+
 module AbstractController
   module Logger
-    setup do
+    extend ActiveSupport::Concern
+
+    class DelayedLog
+      def initialize(&blk)
+        @blk = blk
+      end
+
+      def to_s
+        @blk.call
+      end
+      alias to_str to_s
+    end
+
+    included do
       cattr_accessor :logger
     end
+
+    def process(action)
+      ret = super
+
+      if logger
+        log = DelayedLog.new do
+          "\n\nProcessing #{self.class.name}\##{action_name} " \
+          "to #{request.formats} " \
+          "(for #{request_origin}) [#{request.method.to_s.upcase}]"
+        end
+
+        logger.info(log)
+      end
+
+      ret
+    end
+
+    def request_origin
+      # this *needs* to be cached!
+      # otherwise you'd get different results if calling it more than once
+      @request_origin ||= "#{request.remote_ip} at #{Time.now.to_s(:db)}"
+    end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/abstract/renderer.rb b/actionpack/lib/action_controller/abstract/renderer.rb
index a86eef889e..cd3e87d861 100644
--- a/actionpack/lib/action_controller/abstract/renderer.rb
+++ b/actionpack/lib/action_controller/abstract/renderer.rb
@@ -2,52 +2,63 @@ require "action_controller/abstract/logger"
 
 module AbstractController
   module Renderer
+    extend ActiveSupport::Concern
+
     depends_on AbstractController::Logger
-    
-    setup do
+
+    included do
       attr_internal :formats
-      
+
       extlib_inheritable_accessor :_view_paths
-      
+
       self._view_paths ||= ActionView::PathSet.new
     end
-        
+
     def _action_view
-      @_action_view ||= ActionView::Base.new(self.class.view_paths, {}, self)      
+      @_action_view ||= ActionView::Base.new(self.class.view_paths, {}, self)
     end
-        
-    def render(options = {})
-      self.response_body = render_to_body(options)
+
+    def render(*args)
+      if response_body
+        raise AbstractController::DoubleRenderError, "OMG"
+      end
+
+      self.response_body = render_to_body(*args)
     end
-    
+
     # Raw rendering of a template to a Rack-compatible body.
     # ====
     # @option _prefix<String> The template's path prefix
     # @option _layout<String> The relative path to the layout template to use
-    # 
+    #
     # :api: plugin
     def render_to_body(options = {})
-      name = options[:_template_name] || action_name
-      
-      template = options[:_template] || view_paths.find_by_parts(name.to_s, formats, options[:_prefix])
-      _render_template(template, options)
+      # TODO: Refactor so we can just use the normal template logic for this
+      if options[:_partial_object]
+        _action_view._render_partial_from_controller(options)
+      else
+        _determine_template(options)
+        _render_template(options)
+      end
     end
 
     # Raw rendering of a template to a string.
     # ====
     # @option _prefix<String> The template's path prefix
     # @option _layout<String> The relative path to the layout template to use
-    # 
+    #
     # :api: plugin
     def render_to_string(options = {})
       AbstractController::Renderer.body_to_s(render_to_body(options))
     end
 
-    def _render_template(template, options)
-      _action_view._render_template_with_layout(template)
+    def _render_template(options)
+      _action_view._render_template_from_controller(options[:_template], options[:_layout], options, options[:_partial])
+    end
+
+    def view_paths()
+      _view_paths
     end
-    
-    def view_paths() _view_paths end
 
     # Return a string representation of a Rack-compatible response body.
     def self.body_to_s(body)
@@ -61,16 +72,28 @@ module AbstractController
       end
     end
 
+  private
+    def _determine_template(options)
+      name = (options[:_template_name] || action_name).to_s
+
+      options[:_template] ||= view_paths.find_by_parts(
+        name, { :formats => formats }, options[:_prefix], options[:_partial]
+      )
+    end
+
     module ClassMethods
-      
       def append_view_path(path)
         self.view_paths << path
       end
-      
+
+      def prepend_view_path(path)
+        self.view_paths.unshift(path)
+      end
+
       def view_paths
         self._view_paths
       end
-      
+
       def view_paths=(paths)
         self._view_paths = paths.is_a?(ActionView::PathSet) ?
                             paths : ActionView::Base.process_view_paths(paths)
diff --git a/actionpack/lib/action_controller/base/base.rb b/actionpack/lib/action_controller/base/base.rb
index 3000b3d12f..67369eb122 100644
--- a/actionpack/lib/action_controller/base/base.rb
+++ b/actionpack/lib/action_controller/base/base.rb
@@ -1,5 +1,7 @@
 require 'action_controller/deprecated'
 require 'set'
+require 'active_support/core_ext/class/inheritable_attributes'
+require 'active_support/core_ext/module/attr_internal'
 
 module ActionController #:nodoc:
   class ActionControllerError < StandardError #:nodoc:
@@ -30,10 +32,6 @@ module ActionController #:nodoc:
     def allowed_methods_header
       allowed_methods.map { |method_symbol| method_symbol.to_s.upcase } * ', '
     end
-
-    def handle_response!(response)
-      response.headers['Allow'] ||= allowed_methods_header
-    end
   end
 
   class NotImplemented < MethodNotAllowed #:nodoc:
@@ -238,13 +236,12 @@ module ActionController #:nodoc:
     cattr_reader :protected_instance_variables
     # Controller specific instance variables which will not be accessible inside views.
     @@protected_instance_variables = %w(@assigns @performed_redirect @performed_render @variables_added @request_origin @url @parent_controller
-                                        @action_name @before_filter_chain_aborted @action_cache_path @_session @_headers @_params
+                                        @action_name @before_filter_chain_aborted @action_cache_path @_headers @_params
                                         @_flash @_response)
 
     # Prepends all the URL-generating helpers from AssetHelper. This makes it possible to easily move javascripts, stylesheets,
     # and images to a dedicated asset server away from the main web server. Example:
     #   ActionController::Base.asset_host = "http://assets.example.com"
-    @@asset_host = ""
     cattr_accessor :asset_host
 
     # All requests are considered local by default, so everyone will be exposed to detailed debugging screens on errors.
@@ -356,7 +353,9 @@ module ActionController #:nodoc:
 
     # Holds a hash of objects in the session. Accessed like <tt>session[:person]</tt> to get the object tied to the "person"
     # key. The session will hold any type of object as values, but the key should be a string or symbol.
-    attr_internal :session
+    def session
+      request.session
+    end
 
     # Holds a hash of header names and values. Accessed like <tt>headers["Cache-Control"]</tt> to get the value of the Cache-Control
     # directive. Values should always be specified as strings.
@@ -365,19 +364,24 @@ module ActionController #:nodoc:
     # Returns the name of the action this controller is processing.
     attr_accessor :action_name
 
-    class << self
-      def call(env)
-        # HACK: For global rescue to have access to the original request and response
-        request = env["action_controller.rescue.request"] ||= ActionDispatch::Request.new(env)
-        response = env["action_controller.rescue.response"] ||= ActionDispatch::Response.new
-        process(request, response)
-      end
+    attr_reader :template
 
-      # Factory for the standard create, process loop where the controller is discarded after processing.
-      def process(request, response) #:nodoc:
-        new.process(request, response)
-      end
+    def action(name, env)
+      request  = ActionDispatch::Request.new(env)
+      response = ActionDispatch::Response.new
+      self.action_name = name && name.to_s
+      process(request, response).to_a
+    end
 
+
+    class << self
+      def action(name = nil)
+        @actions ||= {}
+        @actions[name] ||= proc do |env|
+          new.action(name, env)
+        end
+      end
+      
       # Converts the class name from something like "OneModule::TwoModule::NeatController" to "NeatController".
       def controller_class_name
         @controller_class_name ||= name.demodulize
@@ -443,60 +447,27 @@ module ActionController #:nodoc:
         @view_paths = superclass.view_paths.dup if @view_paths.nil?
         @view_paths.push(*path)
       end
-
-      # Replace sensitive parameter data from the request log.
-      # Filters parameters that have any of the arguments as a substring.
-      # Looks 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.
-      #
-      # Examples:
-      #   filter_parameter_logging
-      #   => Does nothing, just slows the logging process down
-      #
-      #   filter_parameter_logging :password
-      #   => replaces the value to all keys matching /password/i with "[FILTERED]"
-      #
-      #   filter_parameter_logging :foo, "bar"
-      #   => replaces the value to all keys matching /foo|bar/i with "[FILTERED]"
-      #
-      #   filter_parameter_logging { |k,v| v.reverse! if k =~ /secret/i }
-      #   => reverses the value to all keys matching /secret/i
-      #
-      #   filter_parameter_logging(:foo, "bar") { |k,v| v.reverse! if k =~ /secret/i }
-      #   => reverses the value to all keys matching /secret/i, and
-      #      replaces the value to all keys matching /foo|bar/i with "[FILTERED]"
-      def filter_parameter_logging(*filter_words, &block)
-        parameter_filter = Regexp.new(filter_words.collect{ |s| s.to_s }.join('|'), true) if filter_words.length > 0
-
-        define_method(:filter_parameters) do |unfiltered_parameters|
-          filtered_parameters = {}
-
-          unfiltered_parameters.each do |key, value|
-            if key =~ parameter_filter
-              filtered_parameters[key] = '[FILTERED]'
-            elsif value.is_a?(Hash)
-              filtered_parameters[key] = filter_parameters(value)
-            elsif block_given?
-              key = key.dup
-              value = value.dup if value
-              yield key, value
-              filtered_parameters[key] = value
-            else
-              filtered_parameters[key] = value
-            end
-          end
-
-          filtered_parameters
+      
+      @@exempt_from_layout = [ActionView::TemplateHandlers::RJS]
+      
+      def exempt_from_layout(*types)
+        types.each do |type|
+          @@exempt_from_layout << 
+            ActionView::Template.handler_class_for_extension(type)
         end
-        protected :filter_parameters
+        
+        @@exempt_from_layout
       end
 
-      delegate :exempt_from_layout, :to => 'ActionView::Template'
     end
 
     public
+      def call(env)
+        request = ActionDispatch::Request.new(env)
+        response = ActionDispatch::Response.new
+        process(request, response).to_a
+      end
+
       # Extracts the action_name from the request parameters and performs that action.
       def process(request, response, method = :perform_action, *arguments) #:nodoc:
         response.request = request
@@ -504,7 +475,6 @@ module ActionController #:nodoc:
         assign_shortcuts(request, response)
         initialize_template_class(response)
         initialize_current_url
-        assign_names
 
         log_processing
         send(method, *arguments)
@@ -787,7 +757,6 @@ module ActionController #:nodoc:
       # Resets the session by clearing out all the objects stored within and initializing a new session object.
       def reset_session #:doc:
         request.reset_session
-        @_session = request.session
       end
 
     private
@@ -804,20 +773,14 @@ module ActionController #:nodoc:
       end
 
       def initialize_template_class(response)
-        @template = response.template = ActionView::Base.new(self.class.view_paths, {}, self, formats)
-        response.template.helpers.send :include, self.class.master_helper_module
-        response.redirected_to = nil
+        @template = ActionView::Base.new(self.class.view_paths, {}, self, formats)
+        response.template = @template if response.respond_to?(:template=)
+        @template.helpers.send :include, self.class.master_helper_module
         @performed_render = @performed_redirect = false
       end
 
       def assign_shortcuts(request, response)
-        @_request, @_params = request, request.parameters
-
-        @_response         = response
-        @_response.session = request.session
-
-        @_session = @_response.session
-
+        @_request, @_response, @_params = request, response, request.parameters
         @_headers = @_response.headers
       end
 
@@ -840,13 +803,6 @@ module ActionController #:nodoc:
         logger.info(request_id)
       end
 
-      def log_processing_for_parameters
-        parameters = respond_to?(:filter_parameters) ? filter_parameters(params) : params.dup
-        parameters = parameters.except!(:controller, :action, :format, :_method)
-
-        logger.info "  Parameters: #{parameters.inspect}" unless parameters.empty?
-      end
-
       def default_render #:nodoc:
         render
       end
@@ -861,13 +817,13 @@ module ActionController #:nodoc:
         return (performed? ? ret : default_render) if called
         
         begin
-          default_render
-        rescue ActionView::MissingTemplate => e
-          raise e unless e.action_name == action_name
-          # If the path is the same as the action_name, the action is completely missing
+          view_paths.find_by_parts(action_name, {:formats => formats, :locales => [I18n.locale]}, controller_path)
+        rescue => e
           raise UnknownAction, "No action responded to #{action_name}. Actions: " +
             "#{action_methods.sort.to_sentence}", caller
         end
+        
+        default_render
       end
 
       # Returns true if a render or redirect has already been performed.
@@ -875,10 +831,6 @@ module ActionController #:nodoc:
         @performed_render || @performed_redirect
       end
 
-      def assign_names
-        @action_name = (params['action'] || 'index')
-      end
-
       def reset_variables_added_to_assigns
         @template.instance_variable_set("@assigns_added", nil)
       end
@@ -894,10 +846,6 @@ module ActionController #:nodoc:
         "#{request.protocol}#{request.host}#{request.request_uri}"
       end
 
-      def close_session
-        # @_session.close if @_session && @_session.respond_to?(:close)
-      end
-
       def default_template(action_name = self.action_name)
         self.view_paths.find_template(default_template_name(action_name), default_template_format)
       end
@@ -921,7 +869,6 @@ module ActionController #:nodoc:
       end
 
       def process_cleanup
-        close_session
       end
   end
 
@@ -929,7 +876,7 @@ module ActionController #:nodoc:
     [ Filters, Layout, Renderer, Redirector, Responder, Benchmarking, Rescue, Flash, MimeResponds, Helpers,
       Cookies, Caching, Verification, Streaming, SessionManagement,
       HttpAuthentication::Basic::ControllerMethods, HttpAuthentication::Digest::ControllerMethods, RecordIdentifier,
-      RequestForgeryProtection, Translation
+      RequestForgeryProtection, Translation, FilterParameterLogging
     ].each do |mod|
       include mod
     end
diff --git a/actionpack/lib/action_controller/base/chained/benchmarking.rb b/actionpack/lib/action_controller/base/chained/benchmarking.rb
index 066150f58a..57a1ac8314 100644
--- a/actionpack/lib/action_controller/base/chained/benchmarking.rb
+++ b/actionpack/lib/action_controller/base/chained/benchmarking.rb
@@ -1,4 +1,4 @@
-require 'benchmark'
+require 'active_support/core_ext/benchmark'
 
 module ActionController #:nodoc:
   # The benchmarking module times the performance of actions and reports to the logger. If the Active Record
@@ -21,7 +21,7 @@ module ActionController #:nodoc:
       # easy to include benchmarking statements in production software that will remain inexpensive because the benchmark
       # will only be conducted if the log level is low enough.
       def benchmark(title, log_level = Logger::DEBUG, use_silence = true)
-        if logger && logger.level == log_level
+        if logger && logger.level >= log_level
           result = nil
           ms = Benchmark.ms { result = use_silence ? silence { yield } : yield }
           logger.add(log_level, "#{title} (#{('%.1f' % ms)}ms)")
diff --git a/actionpack/lib/action_controller/base/chained/filters.rb b/actionpack/lib/action_controller/base/chained/filters.rb
index 9022b8b279..e121c0129d 100644
--- a/actionpack/lib/action_controller/base/chained/filters.rb
+++ b/actionpack/lib/action_controller/base/chained/filters.rb
@@ -160,7 +160,7 @@ module ActionController #:nodoc:
         def convert_only_and_except_options_to_sets_of_strings(opts)
           [:only, :except].each do |key|
             if values = opts[key]
-              opts[key] = Array(values).map(&:to_s).to_set
+              opts[key] = Array(values).map {|val| val.to_s }.to_set
             end
           end
         end
@@ -571,12 +571,7 @@ module ActionController #:nodoc:
 
       # Returns an array of Filter objects for this controller.
       def filter_chain
-        if chain = read_inheritable_attribute('filter_chain')
-          return chain
-        else
-          write_inheritable_attribute('filter_chain', FilterChain.new)
-          return filter_chain
-        end
+        read_inheritable_attribute('filter_chain') || write_inheritable_attribute('filter_chain', FilterChain.new)
       end
 
       # Returns all the before filters for this class and all its ancestors.
diff --git a/actionpack/lib/action_controller/base/chained/flash.rb b/actionpack/lib/action_controller/base/chained/flash.rb
index 56ee9c67e2..04d27bf090 100644
--- a/actionpack/lib/action_controller/base/chained/flash.rb
+++ b/actionpack/lib/action_controller/base/chained/flash.rb
@@ -26,9 +26,18 @@ module ActionController #:nodoc:
   #
   # See docs on the FlashHash class for more details about the flash.
   module Flash
-    def self.included(base)
-      base.class_eval do
-        include InstanceMethods
+    extend ActiveSupport::Concern
+
+    # TODO : Remove the defined? check when new base is the main base
+    depends_on Session if defined?(ActionController::Http)
+
+    included do
+      # TODO : Remove the defined? check when new base is the main base
+      if defined?(ActionController::Http)
+        include InstanceMethodsForNewBase
+      else
+        include InstanceMethodsForBase
+
         alias_method_chain :perform_action, :flash
         alias_method_chain :reset_session,  :flash
       end
@@ -120,44 +129,68 @@ module ActionController #:nodoc:
         (@used.keys - keys).each{ |k| @used.delete(k) }
       end
 
+      def store(session, key = "flash")
+        return if self.empty?
+        session[key] = self
+      end
+
       private
         # Used internally by the <tt>keep</tt> and <tt>discard</tt> methods
         #     use()               # marks the entire flash as used
         #     use('msg')          # marks the "msg" entry as used
         #     use(nil, false)     # marks the entire flash as unused (keeps it around for one more action)
         #     use('msg', false)   # marks the "msg" entry as unused (keeps it around for one more action)
-        def use(k=nil, v=true)
-          unless k.nil?
-            @used[k] = v
-          else
-            keys.each{ |key| use(key, v) }
-          end
+        # Returns the single value for the key you asked to be marked (un)used or the FlashHash itself
+        # if no key is passed.
+        def use(key = nil, used = true)
+          Array(key || keys).each { |k| @used[k] = used }
+          return key ? self[key] : self
         end
     end
 
-    module InstanceMethods #:nodoc:
+    module InstanceMethodsForBase #:nodoc:
       protected
         def perform_action_with_flash
           perform_action_without_flash
-          remove_instance_variable(:@_flash) if defined? @_flash
+          if defined? @_flash
+            @_flash.store(session)
+            remove_instance_variable(:@_flash)
+          end
         end
 
         def reset_session_with_flash
           reset_session_without_flash
-          remove_instance_variable(:@_flash) if defined? @_flash
+          remove_instance_variable(:@_flash) if defined?(@_flash)
         end
+    end
 
-        # Access the contents of the flash. Use <tt>flash["notice"]</tt> to
-        # read a notice you put there or <tt>flash["notice"] = "hello"</tt>
-        # to put a new one.
-        def flash #:doc:
-          unless defined? @_flash
-            @_flash = session["flash"] ||= FlashHash.new
-            @_flash.sweep
+    module InstanceMethodsForNewBase #:nodoc:
+      protected
+        def process_action(method_name)
+          super
+          if defined? @_flash
+            @_flash.store(session)
+            remove_instance_variable(:@_flash)
           end
+        end
 
-          @_flash
+        def reset_session
+          super
+          remove_instance_variable(:@_flash) if defined?(@_flash)
         end
     end
+
+    protected
+      # Access the contents of the flash. Use <tt>flash["notice"]</tt> to
+      # read a notice you put there or <tt>flash["notice"] = "hello"</tt>
+      # to put a new one.
+      def flash #:doc:
+        if !defined?(@_flash)
+          @_flash = session["flash"] || FlashHash.new
+          @_flash.sweep
+        end
+
+        @_flash
+      end
   end
 end
diff --git a/actionpack/lib/action_controller/base/cookies.rb b/actionpack/lib/action_controller/base/cookies.rb
index ca380e98d0..d4806623c3 100644
--- a/actionpack/lib/action_controller/base/cookies.rb
+++ b/actionpack/lib/action_controller/base/cookies.rb
@@ -51,7 +51,7 @@ module ActionController #:nodoc:
     protected
       # Returns the cookie container, which operates as described above.
       def cookies
-        CookieJar.new(self)
+        @cookies ||= CookieJar.new(self)
       end
   end
 
diff --git a/actionpack/lib/action_controller/base/filter_parameter_logging.rb b/actionpack/lib/action_controller/base/filter_parameter_logging.rb
new file mode 100644
index 0000000000..9df286ee24
--- /dev/null
+++ b/actionpack/lib/action_controller/base/filter_parameter_logging.rb
@@ -0,0 +1,97 @@
+module ActionController
+  module FilterParameterLogging
+    extend ActiveSupport::Concern
+
+    # TODO : Remove the defined? check when new base is the main base
+    if defined?(ActionController::Http)
+      depends_on AbstractController::Logger
+    end
+
+    included do
+      if defined?(ActionController::Http)
+        include InstanceMethodsForNewBase
+      end
+    end
+
+    module ClassMethods
+      # Replace sensitive parameter data from the request log.
+      # Filters parameters that have any of the arguments as a substring.
+      # Looks 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.
+      #
+      # Examples:
+      #   filter_parameter_logging
+      #   => Does nothing, just slows the logging process down
+      #
+      #   filter_parameter_logging :password
+      #   => replaces the value to all keys matching /password/i with "[FILTERED]"
+      #
+      #   filter_parameter_logging :foo, "bar"
+      #   => replaces the value to all keys matching /foo|bar/i with "[FILTERED]"
+      #
+      #   filter_parameter_logging { |k,v| v.reverse! if k =~ /secret/i }
+      #   => reverses the value to all keys matching /secret/i
+      #
+      #   filter_parameter_logging(:foo, "bar") { |k,v| v.reverse! if k =~ /secret/i }
+      #   => reverses the value to all keys matching /secret/i, and
+      #      replaces the value to all keys matching /foo|bar/i with "[FILTERED]"
+      def filter_parameter_logging(*filter_words, &block)
+        parameter_filter = Regexp.new(filter_words.collect{ |s| s.to_s }.join('|'), true) if filter_words.length > 0
+
+        define_method(:filter_parameters) do |unfiltered_parameters|
+          filtered_parameters = {}
+
+          unfiltered_parameters.each do |key, value|
+            if key =~ parameter_filter
+              filtered_parameters[key] = '[FILTERED]'
+            elsif value.is_a?(Hash)
+              filtered_parameters[key] = filter_parameters(value)
+            elsif block_given?
+              key = key.dup
+              value = value.dup if value
+              yield key, value
+              filtered_parameters[key] = value
+            else
+              filtered_parameters[key] = value
+            end
+          end
+
+          filtered_parameters
+        end
+        protected :filter_parameters
+      end
+    end
+
+    module InstanceMethodsForNewBase
+      # TODO : Fix the order of information inside such that it's exactly same as the old base
+      def process(*)
+        ret = super
+
+        if logger
+          parameters = respond_to?(:filter_parameters) ? filter_parameters(params) : params.dup
+          parameters = parameters.except!(:controller, :action, :format, :_method, :only_path)
+
+          unless parameters.empty?
+            # TODO : Move DelayedLog to AS
+            log = AbstractController::Logger::DelayedLog.new { "  Parameters: #{parameters.inspect}" }
+            logger.info(log)
+          end
+        end
+
+        ret
+      end
+    end
+
+    private
+
+    # TODO : This method is not needed for the new base
+    def log_processing_for_parameters
+      parameters = respond_to?(:filter_parameters) ? filter_parameters(params) : params.dup
+      parameters = parameters.except!(:controller, :action, :format, :_method)
+
+      logger.info "  Parameters: #{parameters.inspect}" unless parameters.empty?
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/base/helpers.rb b/actionpack/lib/action_controller/base/helpers.rb
index ba65032f6a..f74158bc13 100644
--- a/actionpack/lib/action_controller/base/helpers.rb
+++ b/actionpack/lib/action_controller/base/helpers.rb
@@ -3,23 +3,19 @@ require 'active_support/dependencies'
 # FIXME: helper { ... } is broken on Ruby 1.9
 module ActionController #:nodoc:
   module Helpers #:nodoc:
-    def self.included(base)
+    extend ActiveSupport::Concern
+
+    included do
       # Initialize the base module to aggregate its helpers.
-      base.class_inheritable_accessor :master_helper_module
-      base.master_helper_module = Module.new
+      class_inheritable_accessor :master_helper_module
+      self.master_helper_module = Module.new
 
       # Set the default directory for helpers
-      base.class_inheritable_accessor :helpers_dir
-      base.helpers_dir = (defined?(RAILS_ROOT) ? "#{RAILS_ROOT}/app/helpers" : "app/helpers")
-
-      # Extend base with class methods to declare helpers.
-      base.extend(ClassMethods)
+      class_inheritable_accessor :helpers_dir
+      self.helpers_dir = (defined?(RAILS_ROOT) ? "#{RAILS_ROOT}/app/helpers" : "app/helpers")
 
-      base.class_eval do
-        # Wrap inherited to create a new master helper module for subclasses.
-        class << self
-          alias_method_chain :inherited, :helper
-        end
+      class << self
+        alias_method_chain :inherited, :helper
       end
     end
 
diff --git a/actionpack/lib/action_controller/base/http_authentication.rb b/actionpack/lib/action_controller/base/http_authentication.rb
index b6b5267c66..2893290efb 100644
--- a/actionpack/lib/action_controller/base/http_authentication.rb
+++ b/actionpack/lib/action_controller/base/http_authentication.rb
@@ -1,3 +1,5 @@
+require 'active_support/base64'
+
 module ActionController
   module HttpAuthentication
     # Makes it dead easy to do HTTP Basic authentication.
@@ -192,9 +194,10 @@ module ActionController
 
         if valid_nonce && realm == credentials[:realm] && opaque == credentials[:opaque]
           password = password_procedure.call(credentials[:username])
+          method = request.env['rack.methodoverride.original_method'] || request.env['REQUEST_METHOD']
 
          [true, false].any? do |password_is_ha1|
-           expected = expected_response(request.env['REQUEST_METHOD'], request.env['REQUEST_URI'], credentials, password, password_is_ha1)
+           expected = expected_response(method, request.env['REQUEST_URI'], credentials, password, password_is_ha1)
            expected == credentials[:response]
          end
         end
@@ -276,7 +279,7 @@ module ActionController
         t = time.to_i
         hashed = [t, secret_key]
         digest = ::Digest::MD5.hexdigest(hashed.join(":"))
-        Base64.encode64("#{t}:#{digest}").gsub("\n", '')
+        ActiveSupport::Base64.encode64("#{t}:#{digest}").gsub("\n", '')
       end
 
       # Might want a shorter timeout depending on whether the request
@@ -285,7 +288,7 @@ module ActionController
       # allow a user to use new nonce without prompting user again for their
       # username and password.
       def validate_nonce(request, value, seconds_to_timeout=5*60)
-        t = Base64.decode64(value).split(":").first.to_i
+        t = ActiveSupport::Base64.decode64(value).split(":").first.to_i
         nonce(t) == value && (t - Time.now.to_i).abs <= seconds_to_timeout
       end
 
diff --git a/actionpack/lib/action_controller/base/layout.rb b/actionpack/lib/action_controller/base/layout.rb
index 4fcef6c5d9..cf5f46a32b 100644
--- a/actionpack/lib/action_controller/base/layout.rb
+++ b/actionpack/lib/action_controller/base/layout.rb
@@ -1,3 +1,7 @@
+require 'active_support/core_ext/enumerable'
+require 'active_support/core_ext/class/delegating_attributes'
+require 'active_support/core_ext/class/inheritable_attributes'
+
 module ActionController #:nodoc:
   module Layout #:nodoc:
     def self.included(base)
@@ -182,7 +186,7 @@ module ActionController #:nodoc:
       def memoized_find_layout(layout, formats) #:nodoc:
         return layout if layout.nil? || layout.respond_to?(:render)
         prefix = layout.to_s =~ /layouts\// ? nil : "layouts"
-        view_paths.find_by_parts(layout.to_s, formats, prefix)
+        view_paths.find_by_parts(layout.to_s, {:formats => formats}, prefix)
       end
 
       def find_layout(*args)
diff --git a/actionpack/lib/action_controller/base/mime_responds.rb b/actionpack/lib/action_controller/base/mime_responds.rb
index bac225ab2a..3c17dda1a1 100644
--- a/actionpack/lib/action_controller/base/mime_responds.rb
+++ b/actionpack/lib/action_controller/base/mime_responds.rb
@@ -1,111 +1,103 @@
 module ActionController #:nodoc:
   module MimeResponds #:nodoc:
-    def self.included(base)
-      base.module_eval do
-        include ActionController::MimeResponds::InstanceMethods
-      end
-    end
-
-    module InstanceMethods
-      # Without web-service support, an action which collects the data for displaying a list of people
-      # might look something like this:
-      #
-      #   def index
-      #     @people = Person.find(:all)
-      #   end
-      #
-      # Here's the same action, with web-service support baked in:
-      #
-      #   def index
-      #     @people = Person.find(:all)
-      #
-      #     respond_to do |format|
-      #       format.html
-      #       format.xml { render :xml => @people.to_xml }
-      #     end
-      #   end
-      #
-      # What that says is, "if the client wants HTML in response to this action, just respond as we
-      # would have before, but if the client wants XML, return them the list of people in XML format."
-      # (Rails determines the desired response format from the HTTP Accept header submitted by the client.)
-      #
-      # Supposing you have an action that adds a new person, optionally creating their company
-      # (by name) if it does not already exist, without web-services, it might look like this:
-      #
-      #   def create
-      #     @company = Company.find_or_create_by_name(params[:company][:name])
-      #     @person  = @company.people.create(params[:person])
-      #
-      #     redirect_to(person_list_url)
-      #   end
-      #
-      # Here's the same action, with web-service support baked in:
-      #
-      #   def create
-      #     company  = params[:person].delete(:company)
-      #     @company = Company.find_or_create_by_name(company[:name])
-      #     @person  = @company.people.create(params[:person])
-      #
-      #     respond_to do |format|
-      #       format.html { redirect_to(person_list_url) }
-      #       format.js
-      #       format.xml  { render :xml => @person.to_xml(:include => @company) }
-      #     end
-      #   end
-      #
-      # If the client wants HTML, we just redirect them back to the person list. If they want Javascript
-      # (format.js), then it is an RJS request and we render the RJS template associated with this action.
-      # Lastly, if the client wants XML, we render the created person as XML, but with a twist: we also
-      # include the person's company in the rendered XML, so you get something like this:
-      #
-      #   <person>
-      #     <id>...</id>
-      #     ...
-      #     <company>
-      #       <id>...</id>
-      #       <name>...</name>
-      #       ...
-      #     </company>
-      #   </person>
-      #
-      # Note, however, the extra bit at the top of that action:
-      #
-      #   company  = params[:person].delete(:company)
-      #   @company = Company.find_or_create_by_name(company[:name])
-      #
-      # This is because the incoming XML document (if a web-service request is in process) can only contain a
-      # single root-node. So, we have to rearrange things so that the request looks like this (url-encoded):
-      #
-      #   person[name]=...&person[company][name]=...&...
-      #
-      # And, like this (xml-encoded):
-      #
-      #   <person>
-      #     <name>...</name>
-      #     <company>
-      #       <name>...</name>
-      #     </company>
-      #   </person>
-      #
-      # In other words, we make the request so that it operates on a single entity's person. Then, in the action,
-      # we extract the company data from the request, find or create the company, and then create the new person
-      # with the remaining data.
-      #
-      # Note that you can define your own XML parameter parser which would allow you to describe multiple entities
-      # in a single request (i.e., by wrapping them all in a single root node), but if you just go with the flow
-      # and accept Rails' defaults, life will be much easier.
-      #
-      # If you need to use a MIME type which isn't supported by default, you can register your own handlers in
-      # environment.rb as follows.
-      #
-      #   Mime::Type.register "image/jpg", :jpg
-      def respond_to(*types, &block)
-        raise ArgumentError, "respond_to takes either types or a block, never both" unless types.any? ^ block
-        block ||= lambda { |responder| types.each { |type| responder.send(type) } }
-        responder = Responder.new(self)
-        block.call(responder)
-        responder.respond
-      end
+    # Without web-service support, an action which collects the data for displaying a list of people
+    # might look something like this:
+    #
+    #   def index
+    #     @people = Person.find(:all)
+    #   end
+    #
+    # Here's the same action, with web-service support baked in:
+    #
+    #   def index
+    #     @people = Person.find(:all)
+    #
+    #     respond_to do |format|
+    #       format.html
+    #       format.xml { render :xml => @people.to_xml }
+    #     end
+    #   end
+    #
+    # What that says is, "if the client wants HTML in response to this action, just respond as we
+    # would have before, but if the client wants XML, return them the list of people in XML format."
+    # (Rails determines the desired response format from the HTTP Accept header submitted by the client.)
+    #
+    # Supposing you have an action that adds a new person, optionally creating their company
+    # (by name) if it does not already exist, without web-services, it might look like this:
+    #
+    #   def create
+    #     @company = Company.find_or_create_by_name(params[:company][:name])
+    #     @person  = @company.people.create(params[:person])
+    #
+    #     redirect_to(person_list_url)
+    #   end
+    #
+    # Here's the same action, with web-service support baked in:
+    #
+    #   def create
+    #     company  = params[:person].delete(:company)
+    #     @company = Company.find_or_create_by_name(company[:name])
+    #     @person  = @company.people.create(params[:person])
+    #
+    #     respond_to do |format|
+    #       format.html { redirect_to(person_list_url) }
+    #       format.js
+    #       format.xml  { render :xml => @person.to_xml(:include => @company) }
+    #     end
+    #   end
+    #
+    # If the client wants HTML, we just redirect them back to the person list. If they want Javascript
+    # (format.js), then it is an RJS request and we render the RJS template associated with this action.
+    # Lastly, if the client wants XML, we render the created person as XML, but with a twist: we also
+    # include the person's company in the rendered XML, so you get something like this:
+    #
+    #   <person>
+    #     <id>...</id>
+    #     ...
+    #     <company>
+    #       <id>...</id>
+    #       <name>...</name>
+    #       ...
+    #     </company>
+    #   </person>
+    #
+    # Note, however, the extra bit at the top of that action:
+    #
+    #   company  = params[:person].delete(:company)
+    #   @company = Company.find_or_create_by_name(company[:name])
+    #
+    # This is because the incoming XML document (if a web-service request is in process) can only contain a
+    # single root-node. So, we have to rearrange things so that the request looks like this (url-encoded):
+    #
+    #   person[name]=...&person[company][name]=...&...
+    #
+    # And, like this (xml-encoded):
+    #
+    #   <person>
+    #     <name>...</name>
+    #     <company>
+    #       <name>...</name>
+    #     </company>
+    #   </person>
+    #
+    # In other words, we make the request so that it operates on a single entity's person. Then, in the action,
+    # we extract the company data from the request, find or create the company, and then create the new person
+    # with the remaining data.
+    #
+    # Note that you can define your own XML parameter parser which would allow you to describe multiple entities
+    # in a single request (i.e., by wrapping them all in a single root node), but if you just go with the flow
+    # and accept Rails' defaults, life will be much easier.
+    #
+    # If you need to use a MIME type which isn't supported by default, you can register your own handlers in
+    # environment.rb as follows.
+    #
+    #   Mime::Type.register "image/jpg", :jpg
+    def respond_to(*types, &block)
+      raise ArgumentError, "respond_to takes either types or a block, never both" unless types.any? ^ block
+      block ||= lambda { |responder| types.each { |type| responder.send(type) } }
+      responder = Responder.new(self)
+      block.call(responder)
+      responder.respond
     end
 
     class Responder #:nodoc:
@@ -127,8 +119,14 @@ module ActionController #:nodoc:
         @order << mime_type
 
         @responses[mime_type] ||= Proc.new do
-          @response.template.formats = [mime_type.to_sym]
+          # TODO: Remove this when new base is merged in
+          if defined?(Http)
+            @controller.formats = [mime_type.to_sym]
+          end
+
+          @controller.template.formats = [mime_type.to_sym]
           @response.content_type = mime_type.to_s
+
           block_given? ? block.call : @controller.send(:render, :action => @controller.action_name)
         end
       end
diff --git a/actionpack/lib/action_controller/base/redirect.rb b/actionpack/lib/action_controller/base/redirect.rb
index 2e92117e7c..7e10f614e2 100644
--- a/actionpack/lib/action_controller/base/redirect.rb
+++ b/actionpack/lib/action_controller/base/redirect.rb
@@ -48,8 +48,6 @@ module ActionController
         status = 302
       end
 
-      response.redirected_to = options
-
       case options
         # The scheme name consist of a letter followed by any combination of
         # letters, digits, and the plus ("+"), period ("."), or hyphen ("-")
@@ -72,7 +70,9 @@ module ActionController
     def redirect_to_full_url(url, status)
       raise DoubleRenderError if performed?
       logger.info("Redirected to #{url}") if logger && logger.info?
-      response.redirect(url, interpret_status(status))
+      response.status = interpret_status(status)
+      response.location = url.gsub(/[\r\n]/, '')
+      response.body = "<html><body>You are being <a href=\"#{CGI.escapeHTML(url)}\">redirected</a>.</body></html>"      
       @performed_redirect = true
     end
     
@@ -82,8 +82,6 @@ module ActionController
     # The response body is not reset here, see +erase_render_results+
     def erase_redirect_results #:nodoc:
       @performed_redirect = false
-      response.redirected_to = nil
-      response.redirected_to_method_params = nil
       response.status = DEFAULT_RENDER_STATUS_CODE
       response.headers.delete('Location')
     end
diff --git a/actionpack/lib/action_controller/base/render.rb b/actionpack/lib/action_controller/base/render.rb
index 606df58518..cc0d878e01 100644
--- a/actionpack/lib/action_controller/base/render.rb
+++ b/actionpack/lib/action_controller/base/render.rb
@@ -253,8 +253,9 @@ module ActionController
         response.content_type ||= Mime::JS
         render_for_text(js)
 
-      elsif json = options[:json]
-        json = json.to_json unless json.is_a?(String)
+      elsif options.include?(:json)
+        json = options[:json]
+        json = ActiveSupport::JSON.encode(json) unless json.respond_to?(:to_str)
         json = "#{options[:callback]}(#{json})" unless options[:callback].blank?
         response.content_type ||= Mime::JSON
         render_for_text(json)
@@ -374,12 +375,18 @@ module ActionController
         render_for_file(name.sub(/^\//, ''), [layout, true], options)
       end
     end
-  
-    def render_for_parts(parts, layout, options = {})
+
+    # ==== Arguments
+    # parts<Array[String, Array[Symbol*], String, Boolean]>::
+    #     Example: ["show", [:html, :xml], "users", false]
+    def render_for_parts(parts, layout_details, options = {})
+      parts[1] = {:formats => parts[1], :locales => [I18n.locale]}
+      
       tmp = view_paths.find_by_parts(*parts)
       
-      layout = _pick_layout(*layout) unless tmp.exempt_from_layout?
-            
+      layout = _pick_layout(*layout_details) unless 
+        self.class.exempt_from_layout.include?(tmp.handler)
+      
       render_for_text(
         @template._render_template_with_layout(tmp, layout, options, parts[3]))
     end
diff --git a/actionpack/lib/action_controller/base/request_forgery_protection.rb b/actionpack/lib/action_controller/base/request_forgery_protection.rb
index 3067122ceb..368c6e9de8 100644
--- a/actionpack/lib/action_controller/base/request_forgery_protection.rb
+++ b/actionpack/lib/action_controller/base/request_forgery_protection.rb
@@ -3,12 +3,26 @@ module ActionController #:nodoc:
   end
 
   module RequestForgeryProtection
-    def self.included(base)
-      base.class_eval do
-        helper_method :form_authenticity_token
-        helper_method :protect_against_forgery?
+    extend ActiveSupport::Concern
+
+    # TODO : Remove the defined? check when new base is the main base
+    if defined?(ActionController::Http)
+      depends_on AbstractController::Helpers, Session
+    end
+
+    included do
+      if defined?(ActionController::Http)
+        # Sets the token parameter name for RequestForgery. Calling +protect_from_forgery+
+        # sets it to <tt>:authenticity_token</tt> by default.
+        cattr_accessor :request_forgery_protection_token
+
+        # Controls whether request forgergy protection is turned on or not. Turned off by default only in test mode.
+        class_inheritable_accessor :allow_forgery_protection
+        self.allow_forgery_protection = true
       end
-      base.extend(ClassMethods)
+
+      helper_method :form_authenticity_token
+      helper_method :protect_against_forgery?
     end
     
     # Protecting controller actions from CSRF attacks by ensuring that all forms are coming from the current web application, not a
diff --git a/actionpack/lib/action_controller/base/rescue.rb b/actionpack/lib/action_controller/base/rescue.rb
new file mode 100644
index 0000000000..2717a06a37
--- /dev/null
+++ b/actionpack/lib/action_controller/base/rescue.rb
@@ -0,0 +1,50 @@
+module ActionController #:nodoc:
+  # Actions that fail to perform as expected throw exceptions. These
+  # exceptions can either be rescued for the public view (with a nice
+  # user-friendly explanation) or for the developers view (with tons of
+  # debugging information). The developers view is already implemented by
+  # the Action Controller, but the public view should be tailored to your
+  # specific application.
+  #
+  # The default behavior for public exceptions is to render a static html
+  # file with the name of the error code thrown.  If no such file exists, an
+  # empty response is sent with the correct status code.
+  #
+  # You can override what constitutes a local request by overriding the
+  # <tt>local_request?</tt> method in your own controller. Custom rescue
+  # behavior is achieved by overriding the <tt>rescue_action_in_public</tt>
+  # and <tt>rescue_action_locally</tt> methods.
+  module Rescue
+    def self.included(base) #:nodoc:
+      base.send :include, ActiveSupport::Rescuable
+      base.extend(ClassMethods)
+
+      base.class_eval do
+        alias_method_chain :perform_action, :rescue
+      end
+    end
+
+    module ClassMethods
+      def rescue_action(env)
+        exception = env.delete('action_dispatch.rescue.exception')
+        request   = ActionDispatch::Request.new(env)
+        response  = ActionDispatch::Response.new
+        new.process(request, response, :rescue_action, exception).to_a
+      end
+    end
+
+    protected
+      # Exception handler called when the performance of an action raises
+      # an exception.
+      def rescue_action(exception)
+        rescue_with_handler(exception) || raise(exception)
+      end
+
+    private
+      def perform_action_with_rescue
+        perform_action_without_rescue
+      rescue Exception => exception
+        rescue_action(exception)
+      end
+  end
+end
diff --git a/actionpack/lib/action_controller/base/streaming.rb b/actionpack/lib/action_controller/base/streaming.rb
index 9f80f48c3d..5f56c95483 100644
--- a/actionpack/lib/action_controller/base/streaming.rb
+++ b/actionpack/lib/action_controller/base/streaming.rb
@@ -2,6 +2,13 @@ module ActionController #:nodoc:
   # Methods for sending arbitrary data and for streaming files to the browser,
   # instead of rendering.
   module Streaming
+    extend ActiveSupport::Concern
+
+    # TODO : Remove the defined? check when new base is the main base
+    if defined?(ActionController::Http)
+      depends_on ActionController::Renderer
+    end
+
     DEFAULT_SEND_FILE_OPTIONS = {
       :type         => 'application/octet-stream'.freeze,
       :disposition  => 'attachment'.freeze,
@@ -88,6 +95,7 @@ module ActionController #:nodoc:
           head options[:status], X_SENDFILE_HEADER => path
         else
           if options[:stream]
+            # TODO : Make render :text => proc {} work with the new base
             render :status => options[:status], :text => Proc.new { |response, output|
               logger.info "Streaming file #{path}" unless logger.nil?
               len = options[:buffer_size] || 4096
diff --git a/actionpack/lib/action_controller/base/verification.rb b/actionpack/lib/action_controller/base/verification.rb
index c62b81b666..31654e36f3 100644
--- a/actionpack/lib/action_controller/base/verification.rb
+++ b/actionpack/lib/action_controller/base/verification.rb
@@ -1,7 +1,10 @@
 module ActionController #:nodoc:
   module Verification #:nodoc:
-    def self.included(base) #:nodoc:
-      base.extend(ClassMethods)
+    extend ActiveSupport::Concern
+
+    # TODO : Remove the defined? check when new base is the main base
+    if defined?(ActionController::Http)
+      depends_on AbstractController::Callbacks, Session, Flash, Renderer
     end
 
     # This module provides a class-level method for specifying that certain
@@ -102,7 +105,7 @@ module ActionController #:nodoc:
     end
  
     def verify_presence_of_keys_in_hash_flash_or_params(options) # :nodoc:
-      [*options[:params] ].find { |v| params[v].nil?  } ||
+      [*options[:params] ].find { |v| v && params[v.to_sym].nil?  } ||
       [*options[:session]].find { |v| session[v].nil? } ||
       [*options[:flash]  ].find { |v| flash[v].nil?   }
     end
diff --git a/actionpack/lib/action_controller/caching.rb b/actionpack/lib/action_controller/caching.rb
index ffd8081edc..38cf1da6a8 100644
--- a/actionpack/lib/action_controller/caching.rb
+++ b/actionpack/lib/action_controller/caching.rb
@@ -24,31 +24,31 @@ module ActionController #:nodoc:
   #   ActionController::Base.cache_store = :mem_cache_store, "localhost"
   #   ActionController::Base.cache_store = MyOwnStore.new("parameter")
   module Caching
+    extend ActiveSupport::Concern
+
     autoload :Actions, 'action_controller/caching/actions'
     autoload :Fragments, 'action_controller/caching/fragments'
     autoload :Pages, 'action_controller/caching/pages'
     autoload :Sweeper, 'action_controller/caching/sweeping'
     autoload :Sweeping, 'action_controller/caching/sweeping'
 
-    def self.included(base) #:nodoc:
-      base.class_eval do
-        @@cache_store = nil
-        cattr_reader :cache_store
+    included do
+      @@cache_store = nil
+      cattr_reader :cache_store
 
-        # Defines the storage option for cached fragments
-        def self.cache_store=(store_option)
-          @@cache_store = ActiveSupport::Cache.lookup_store(store_option)
-        end
+      # Defines the storage option for cached fragments
+      def self.cache_store=(store_option)
+        @@cache_store = ActiveSupport::Cache.lookup_store(store_option)
+      end
 
-        include Pages, Actions, Fragments
-        include Sweeping if defined?(ActiveRecord)
+      include Pages, Actions, Fragments
+      include Sweeping if defined?(ActiveRecord)
 
-        @@perform_caching = true
-        cattr_accessor :perform_caching
+      @@perform_caching = true
+      cattr_accessor :perform_caching
 
-        def self.cache_configured?
-          perform_caching && cache_store
-        end
+      def self.cache_configured?
+        perform_caching && cache_store
       end
     end
 
diff --git a/actionpack/lib/action_controller/caching/actions.rb b/actionpack/lib/action_controller/caching/actions.rb
index b99feddf77..54148b55d8 100644
--- a/actionpack/lib/action_controller/caching/actions.rb
+++ b/actionpack/lib/action_controller/caching/actions.rb
@@ -61,7 +61,15 @@ module ActionController #:nodoc:
           filter_options = { :only => actions, :if => options.delete(:if), :unless => options.delete(:unless) }
 
           cache_filter = ActionCacheFilter.new(:layout => options.delete(:layout), :cache_path => options.delete(:cache_path), :store_options => options)
-          around_filter(cache_filter, filter_options)
+
+          # TODO: Remove this once new base is swapped in.
+          if defined?(ActionController::Http)
+            around_filter cache_filter, filter_options
+          else
+            around_filter(filter_options) do |controller, action|
+              cache_filter.filter(controller, action)
+            end
+          end
         end
       end
 
@@ -83,8 +91,24 @@ module ActionController #:nodoc:
           @options = options
         end
 
+        # TODO: Remove once New Base is merged
+        if defined?(ActionController::Http)
+          def filter(controller)
+            should_continue = before(controller)
+            yield if should_continue
+            after(controller)
+          end
+        else
+          def filter(controller, action)
+            should_continue = before(controller)
+            action.call if should_continue
+            after(controller)
+          end
+        end
+
         def before(controller)
           cache_path = ActionCachePath.new(controller, path_options_for(controller, @options.slice(:cache_path)))
+
           if cache = controller.read_fragment(cache_path.path, @options[:store_options])
             controller.rendered_action_cache = true
             set_content_type!(controller, cache_path.extension)
@@ -121,7 +145,9 @@ module ActionController #:nodoc:
           end
 
           def content_for_layout(controller)
-            controller.response.layout && controller.response.template.instance_variable_get('@cached_content_for_layout')
+            # TODO: Remove this when new base is merged in
+            template = controller.respond_to?(:template) ? controller.template : controller._action_view
+            template.layout && template.instance_variable_get('@cached_content_for_layout')
           end
       end
 
diff --git a/actionpack/lib/action_controller/dispatch/dispatcher.rb b/actionpack/lib/action_controller/dispatch/dispatcher.rb
index bb9d8bd063..9ad1cadfd3 100644
--- a/actionpack/lib/action_controller/dispatch/dispatcher.rb
+++ b/actionpack/lib/action_controller/dispatch/dispatcher.rb
@@ -1,96 +1,65 @@
+require 'active_support/core_ext/module/delegation'
+
 module ActionController
   # Dispatches requests to the appropriate controller and takes care of
   # reloading the app after each request when Dependencies.load? is true.
   class Dispatcher
+    cattr_accessor :prepare_each_request
+    self.prepare_each_request = false
+
+    cattr_accessor :router
+    self.router = Routing::Routes
+
+    cattr_accessor :middleware
+    self.middleware = ActionDispatch::MiddlewareStack.new do |middleware|
+      middlewares = File.join(File.dirname(__FILE__), "middlewares.rb")
+      middleware.instance_eval(File.read(middlewares), middlewares, 1)
+    end
+
     class << self
       def define_dispatcher_callbacks(cache_classes)
         unless cache_classes
-          unless self.middleware.include?(ActionDispatch::Reloader)
-            self.middleware.insert_after(ActionDispatch::Failsafe, ActionDispatch::Reloader)
+          # Run prepare callbacks before every request in development mode
+          self.prepare_each_request = true
+
+          # Development mode callbacks
+          ActionDispatch::Callbacks.before_dispatch do |app|
+            ActionController::Dispatcher.router.reload
+          end
+
+          ActionDispatch::Callbacks.after_dispatch do
+            # Cleanup the application before processing the current request.
+            ActiveRecord::Base.reset_subclasses if defined?(ActiveRecord)
+            ActiveSupport::Dependencies.clear
+            ActiveRecord::Base.clear_reloadable_connections! if defined?(ActiveRecord)
           end
 
           ActionView::Helpers::AssetTagHelper.cache_asset_timestamps = false
         end
 
         if defined?(ActiveRecord)
-          to_prepare(:activerecord_instantiate_observers) { ActiveRecord::Base.instantiate_observers }
+          to_prepare(:activerecord_instantiate_observers) do
+            ActiveRecord::Base.instantiate_observers
+          end
         end
 
-        after_dispatch :flush_logger if Base.logger && Base.logger.respond_to?(:flush)
+        if Base.logger && Base.logger.respond_to?(:flush)
+          after_dispatch do
+            Base.logger.flush
+          end
+        end
 
         to_prepare do
           I18n.reload!
         end
       end
 
-      # Add a preparation callback. Preparation callbacks are run before every
-      # request in development mode, and before the first request in production
-      # mode.
-      #
-      # An optional identifier may be supplied for the callback. If provided,
-      # to_prepare may 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 to_prepare(identifier = nil, &block)
-        @prepare_dispatch_callbacks ||= ActiveSupport::Callbacks::CallbackChain.new
-        callback = ActiveSupport::Callbacks::Callback.new(:prepare_dispatch, block, :identifier => identifier)
-        @prepare_dispatch_callbacks.replace_or_append!(callback)
-      end
-
-      def run_prepare_callbacks
-        new.send :run_callbacks, :prepare_dispatch
-      end
-
-      def reload_application
-        # Run prepare callbacks before every request in development mode
-        run_prepare_callbacks
+      delegate :to_prepare, :prepare_dispatch, :before_dispatch, :after_dispatch,
+        :to => ActionDispatch::Callbacks
 
-        Routing::Routes.reload
+      def new
+        @@middleware.build(@@router)
       end
-
-      def cleanup_application
-        # Cleanup the application before processing the current request.
-        ActiveRecord::Base.reset_subclasses if defined?(ActiveRecord)
-        ActiveSupport::Dependencies.clear
-        ActiveRecord::Base.clear_reloadable_connections! if defined?(ActiveRecord)
-      end
-    end
-
-    cattr_accessor :middleware
-    self.middleware = ActionDispatch::MiddlewareStack.new do |middleware|
-      middlewares = File.join(File.dirname(__FILE__), "middlewares.rb")
-      middleware.instance_eval(File.read(middlewares))
-    end
-
-    include ActiveSupport::Callbacks
-    define_callbacks :prepare_dispatch, :before_dispatch, :after_dispatch
-
-    def initialize
-      @app = @@middleware.build(lambda { |env| self._call(env) })
-      freeze
-    end
-
-    def call(env)
-      @app.call(env)
-    end
-
-    def _call(env)
-      begin
-        run_callbacks :before_dispatch
-        Routing::Routes.call(env)
-      rescue Exception => exception
-        if controller ||= (::ApplicationController rescue Base)
-          controller.call_with_exception(env, exception).to_a
-        else
-          raise exception
-        end
-      ensure
-        run_callbacks :after_dispatch, :enumerator => :reverse_each
-      end
-    end
-
-    def flush_logger
-      Base.logger.flush
     end
   end
 end
diff --git a/actionpack/lib/action_controller/dispatch/middlewares.rb b/actionpack/lib/action_controller/dispatch/middlewares.rb
index b62b4f84a1..b25ed3fd3f 100644
--- a/actionpack/lib/action_controller/dispatch/middlewares.rb
+++ b/actionpack/lib/action_controller/dispatch/middlewares.rb
@@ -2,12 +2,17 @@ use "Rack::Lock", :if => lambda {
   !ActionController::Base.allow_concurrency
 }
 
-use "ActionDispatch::Failsafe"
+use "ActionDispatch::ShowExceptions", lambda { ActionController::Base.consider_all_requests_local }
+use "ActionDispatch::Callbacks", lambda { ActionController::Dispatcher.prepare_each_request }
+use "ActionDispatch::Rescue", lambda {
+  controller = (::ApplicationController rescue ActionController::Base)
+  # TODO: Replace with controller.action(:_rescue_action)
+  controller.method(:rescue_action)
+}
 
 use lambda { ActionController::Base.session_store },
     lambda { ActionController::Base.session_options }
 
-use "ActionDispatch::RewindableInput"
 use "ActionDispatch::ParamsParser"
 use "Rack::MethodOverride"
-use "Rack::Head"
+use "Rack::Head"
\ No newline at end of file
diff --git a/actionpack/lib/action_controller/dispatch/rescue.rb b/actionpack/lib/action_controller/dispatch/rescue.rb
deleted file mode 100644
index df80ac0909..0000000000
--- a/actionpack/lib/action_controller/dispatch/rescue.rb
+++ /dev/null
@@ -1,185 +0,0 @@
-module ActionController #:nodoc:
-  # Actions that fail to perform as expected throw exceptions. These
-  # exceptions can either be rescued for the public view (with a nice
-  # user-friendly explanation) or for the developers view (with tons of
-  # debugging information). The developers view is already implemented by
-  # the Action Controller, but the public view should be tailored to your
-  # specific application.
-  #
-  # The default behavior for public exceptions is to render a static html
-  # file with the name of the error code thrown.  If no such file exists, an
-  # empty response is sent with the correct status code.
-  #
-  # You can override what constitutes a local request by overriding the
-  # <tt>local_request?</tt> method in your own controller. Custom rescue
-  # behavior is achieved by overriding the <tt>rescue_action_in_public</tt>
-  # and <tt>rescue_action_locally</tt> methods.
-  module Rescue
-    LOCALHOST = '127.0.0.1'.freeze
-
-    DEFAULT_RESCUE_RESPONSE = :internal_server_error
-    DEFAULT_RESCUE_RESPONSES = {
-      'ActionController::RoutingError'             => :not_found,
-      'ActionController::UnknownAction'            => :not_found,
-      'ActiveRecord::RecordNotFound'               => :not_found,
-      'ActiveRecord::StaleObjectError'             => :conflict,
-      'ActiveRecord::RecordInvalid'                => :unprocessable_entity,
-      'ActiveRecord::RecordNotSaved'               => :unprocessable_entity,
-      'ActionController::MethodNotAllowed'         => :method_not_allowed,
-      'ActionController::NotImplemented'           => :not_implemented,
-      'ActionController::InvalidAuthenticityToken' => :unprocessable_entity
-    }
-
-    DEFAULT_RESCUE_TEMPLATE = 'diagnostics'
-    DEFAULT_RESCUE_TEMPLATES = {
-      'ActionView::MissingTemplate'       => 'missing_template',
-      'ActionController::RoutingError'    => 'routing_error',
-      'ActionController::UnknownAction'   => 'unknown_action',
-      'ActionView::TemplateError'         => 'template_error'
-    }
-
-    RESCUES_TEMPLATE_PATH = ActionView::Template::FileSystemPath.new(
-      File.join(File.dirname(__FILE__), "templates"))
-
-    def self.included(base) #:nodoc:
-      base.cattr_accessor :rescue_responses
-      base.rescue_responses = Hash.new(DEFAULT_RESCUE_RESPONSE)
-      base.rescue_responses.update DEFAULT_RESCUE_RESPONSES
-
-      base.cattr_accessor :rescue_templates
-      base.rescue_templates = Hash.new(DEFAULT_RESCUE_TEMPLATE)
-      base.rescue_templates.update DEFAULT_RESCUE_TEMPLATES
-
-      base.extend(ClassMethods)
-      base.send :include, ActiveSupport::Rescuable
-
-      base.class_eval do
-        alias_method_chain :perform_action, :rescue
-      end
-    end
-
-    module ClassMethods
-      def call_with_exception(env, exception) #:nodoc:
-        request = env["action_controller.rescue.request"] ||= ActionDispatch::Request.new(env)
-        response = env["action_controller.rescue.response"] ||= ActionDispatch::Response.new
-        new.process(request, response, :rescue_action, exception)
-      end
-    end
-
-    protected
-      # Exception handler called when the performance of an action raises
-      # an exception.
-      def rescue_action(exception)
-        rescue_with_handler(exception) ||
-          rescue_action_without_handler(exception)
-      end
-
-      # Overwrite to implement custom logging of errors. By default
-      # logs as fatal.
-      def log_error(exception) #:doc:
-        ActiveSupport::Deprecation.silence do
-          if ActionView::TemplateError === exception
-            logger.fatal(exception.to_s)
-          else
-            logger.fatal(
-              "\n#{exception.class} (#{exception.message}):\n  " +
-              clean_backtrace(exception).join("\n  ") + "\n\n"
-            )
-          end
-        end
-      end
-
-      # Overwrite to implement public exception handling (for requests
-      # answering false to <tt>local_request?</tt>).  By default will call
-      # render_optional_error_file.  Override this method to provide more
-      # user friendly error messages.
-      def rescue_action_in_public(exception) #:doc:
-        render_optional_error_file response_code_for_rescue(exception)
-      end
-
-      # Attempts to render a static error page based on the
-      # <tt>status_code</tt> thrown, or just return headers if no such file
-      # exists. At first, it will try to render a localized static page.
-      # For example, if a 500 error is being handled Rails and locale is :da,
-      # it will first attempt to render the file at <tt>public/500.da.html</tt>
-      # then attempt to render <tt>public/500.html</tt>. If none of them exist,
-      # the body of the response will be left empty.
-      def render_optional_error_file(status_code)
-        status = interpret_status(status_code)
-        locale_path = "#{Rails.public_path}/#{status[0,3]}.#{I18n.locale}.html" if I18n.locale
-        path = "#{Rails.public_path}/#{status[0,3]}.html"
-
-        if locale_path && File.exist?(locale_path)
-          render :file => locale_path, :status => status, :content_type => Mime::HTML
-        elsif File.exist?(path)
-          render :file => path, :status => status, :content_type => Mime::HTML
-        else
-          head status
-        end
-      end
-
-      # True if the request came from localhost, 127.0.0.1. Override this
-      # method if you wish to redefine the meaning of a local request to
-      # include remote IP addresses or other criteria.
-      def local_request? #:doc:
-        request.remote_addr == LOCALHOST && request.remote_ip == LOCALHOST
-      end
-
-      # Render detailed diagnostics for unhandled exceptions rescued from
-      # a controller action.
-      def rescue_action_locally(exception)
-        @template.instance_variable_set("@exception", exception)
-        @template.instance_variable_set("@rescues_path", RESCUES_TEMPLATE_PATH)
-        @template.instance_variable_set("@contents",
-          @template._render_template(template_path_for_local_rescue(exception)))
-
-        response.content_type = Mime::HTML
-        response.status = interpret_status(response_code_for_rescue(exception))
-        
-        content = @template._render_template(rescues_path("layout"))
-        render_for_text(content)
-      end
-
-      def rescue_action_without_handler(exception)
-        log_error(exception) if logger
-        erase_results if performed?
-
-        # Let the exception alter the response if it wants.
-        # For example, MethodNotAllowed sets the Allow header.
-        if exception.respond_to?(:handle_response!)
-          exception.handle_response!(response)
-        end
-
-        if consider_all_requests_local || local_request?
-          rescue_action_locally(exception)
-        else
-          rescue_action_in_public(exception)
-        end
-      end
-
-    private
-      def perform_action_with_rescue #:nodoc:
-        perform_action_without_rescue
-      rescue Exception => exception
-        rescue_action(exception)
-      end
-
-      def rescues_path(template_name)
-        RESCUES_TEMPLATE_PATH.find_by_parts("rescues/#{template_name}.erb")
-      end
-
-      def template_path_for_local_rescue(exception)
-        rescues_path(rescue_templates[exception.class.name])
-      end
-
-      def response_code_for_rescue(exception)
-        rescue_responses[exception.class.name]
-      end
-
-      def clean_backtrace(exception)
-        defined?(Rails) && Rails.respond_to?(:backtrace_cleaner) ?
-          Rails.backtrace_cleaner.clean(exception.backtrace) :
-          exception.backtrace
-      end
-  end
-end
diff --git a/actionpack/lib/action_controller/dispatch/templates/rescues/diagnostics.erb b/actionpack/lib/action_controller/dispatch/templates/rescues/diagnostics.erb
deleted file mode 100644
index e5c647c826..0000000000
--- a/actionpack/lib/action_controller/dispatch/templates/rescues/diagnostics.erb
+++ /dev/null
@@ -1,10 +0,0 @@
-<h1>
-  <%=h @exception.class.to_s %>
-  <% if request.parameters['controller'] %>
-    in <%=h request.parameters['controller'].humanize %>Controller<% if request.parameters['action'] %>#<%=h request.parameters['action'] %><% end %>
-  <% end %>
-</h1>
-<pre><%=h @exception.clean_message %></pre>
-
-<%= @template._render_template(@rescues_path.find_by_parts("rescues/_trace.erb")) %>
-<%= @template._render_template(@rescues_path.find_by_parts("rescues/_request_and_response.erb")) %>
\ No newline at end of file
diff --git a/actionpack/lib/action_controller/new_base.rb b/actionpack/lib/action_controller/new_base.rb
index 7c65f1cdc1..df256985ac 100644
--- a/actionpack/lib/action_controller/new_base.rb
+++ b/actionpack/lib/action_controller/new_base.rb
@@ -1,7 +1,47 @@
 module ActionController
-  autoload :AbstractBase, "action_controller/new_base/base"
-  autoload :HideActions,  "action_controller/new_base/hide_actions"
-  autoload :Layouts,      "action_controller/new_base/layouts"
-  autoload :Renderer,     "action_controller/new_base/renderer"
-  autoload :UrlFor,       "action_controller/new_base/url_for"
-end
\ No newline at end of file
+  autoload :Base,                 "action_controller/new_base/base"
+  autoload :ConditionalGet,       "action_controller/new_base/conditional_get"
+  autoload :HideActions,          "action_controller/new_base/hide_actions"
+  autoload :Http,                 "action_controller/new_base/http"
+  autoload :Layouts,              "action_controller/new_base/layouts"
+  autoload :RackConvenience,      "action_controller/new_base/rack_convenience"
+  autoload :Rails2Compatibility,  "action_controller/new_base/compatibility"
+  autoload :Redirector,           "action_controller/new_base/redirector"
+  autoload :Renderer,             "action_controller/new_base/renderer"
+  autoload :RenderOptions,        "action_controller/new_base/render_options"
+  autoload :Renderers,            "action_controller/new_base/render_options"
+  autoload :Rescue,               "action_controller/new_base/rescuable"
+  autoload :Testing,              "action_controller/new_base/testing"
+  autoload :UrlFor,               "action_controller/new_base/url_for"
+  autoload :Session,              "action_controller/new_base/session"
+  autoload :Helpers,              "action_controller/new_base/helpers"
+
+  # Ported modules
+  # require 'action_controller/routing'
+  autoload :Caching,           'action_controller/caching'
+  autoload :Dispatcher,        'action_controller/dispatch/dispatcher'
+  autoload :MimeResponds,      'action_controller/base/mime_responds'
+  autoload :PolymorphicRoutes, 'action_controller/routing/generation/polymorphic_routes'
+  autoload :RecordIdentifier,  'action_controller/record_identifier'
+  autoload :Resources,         'action_controller/routing/resources'
+  autoload :SessionManagement, 'action_controller/base/session_management'
+  autoload :TestCase,          'action_controller/testing/test_case'
+  autoload :UrlRewriter,       'action_controller/routing/generation/url_rewriter'
+  autoload :UrlWriter,         'action_controller/routing/generation/url_rewriter'
+
+  autoload :Verification,             'action_controller/base/verification'
+  autoload :Flash,                    'action_controller/base/chained/flash'
+  autoload :RequestForgeryProtection, 'action_controller/base/request_forgery_protection'
+  autoload :Streaming,                'action_controller/base/streaming'
+  autoload :HttpAuthentication,       'action_controller/base/http_authentication'
+  autoload :FilterParameterLogging,   'action_controller/base/filter_parameter_logging'
+  autoload :Translation,              'action_controller/translation'
+  autoload :Cookies,                  'action_controller/base/cookies'
+
+  require 'action_controller/routing'
+end
+
+autoload :HTML, 'action_controller/vendor/html-scanner'
+
+require 'action_dispatch'
+require 'action_view'
diff --git a/actionpack/lib/action_controller/new_base/base.rb b/actionpack/lib/action_controller/new_base/base.rb
index 08e7a1a0e7..d7b65d37fa 100644
--- a/actionpack/lib/action_controller/new_base/base.rb
+++ b/actionpack/lib/action_controller/new_base/base.rb
@@ -1,60 +1,173 @@
 module ActionController
-  class AbstractBase < AbstractController::Base
-    
-    # :api: public
-    attr_internal :request, :response, :params
-
-    # :api: public
-    def self.controller_name
-      @controller_name ||= controller_path.split("/").last
-    end
-
-    # :api: public
-    def controller_name() self.class.controller_name end
-
-    # :api: public    
-    def self.controller_path
-      @controller_path ||= self.name.sub(/Controller$/, '').underscore
-    end
-    
-    # :api: public    
-    def controller_path() self.class.controller_path end
-      
-    # :api: private      
-    def self.action_methods
-      @action_names ||= Set.new(self.public_instance_methods - self::CORE_METHODS)
-    end
-    
-    # :api: private    
-    def self.action_names() action_methods end
-    
-    # :api: private        
-    def action_methods() self.class.action_names end
-
-    # :api: private
-    def action_names() action_methods end
-    
-    # :api: plugin
-    def self.call(env)
-      controller = new
-      controller.call(env).to_rack
-    end
-    
-    # :api: plugin
-    def response_body=(body)
-      @_response.body = body
-    end
-    
-    # :api: private
-    def call(env)
-      @_request = ActionDispatch::Request.new(env)
-      @_response = ActionDispatch::Response.new
-      process(@_request.parameters[:action])
-    end
-    
-    # :api: private
-    def to_rack
-      response.to_a
+  class Base < Http
+    abstract!
+
+    include AbstractController::Benchmarker
+    include AbstractController::Callbacks
+    include AbstractController::Logger
+
+    include ActionController::Helpers
+    include ActionController::HideActions
+    include ActionController::UrlFor
+    include ActionController::Redirector
+    include ActionController::Renderer
+    include ActionController::Renderers::All
+    include ActionController::Layouts
+    include ActionController::ConditionalGet
+    include ActionController::RackConvenience
+
+    # Legacy modules
+    include SessionManagement
+    include ActionDispatch::StatusCodes
+    include ActionController::Caching
+    include ActionController::MimeResponds
+
+    # Rails 2.x compatibility
+    include ActionController::Rails2Compatibility
+
+    include ActionController::Cookies
+    include ActionController::Session
+    include ActionController::Flash
+    include ActionController::Verification
+    include ActionController::RequestForgeryProtection
+    include ActionController::Streaming
+    include ActionController::HttpAuthentication::Basic::ControllerMethods
+    include ActionController::HttpAuthentication::Digest::ControllerMethods
+    include ActionController::FilterParameterLogging
+    include ActionController::Translation
+
+    # TODO: Extract into its own module
+    # This should be moved together with other normalizing behavior
+    module ImplicitRender
+      def send_action(method_name)
+        ret = super
+        default_render unless performed?
+        ret
+      end
+
+      def default_render
+        render
+      end
+
+      def method_for_action(action_name)
+        super || begin
+          if view_paths.find_by_parts?(action_name.to_s, {:formats => formats, :locales => [I18n.locale]}, controller_path)
+            "default_render"
+          end
+        end
+      end
+    end
+
+    include ImplicitRender
+
+    include ActionController::Rescue
+
+    def self.inherited(klass)
+      ::ActionController::Base.subclasses << klass.to_s
+      super
+    end
+
+    def self.subclasses
+      @subclasses ||= []
+    end
+
+    def self.app_loaded!
+      @subclasses.each do |subclass|
+        subclass.constantize._write_layout_method
+      end
+    end
+
+    def _normalize_options(action = nil, options = {}, &blk)
+      if action.is_a?(Hash)
+        options, action = action, nil
+      elsif action.is_a?(String) || action.is_a?(Symbol)
+        key = case action = action.to_s
+        when %r{^/} then :file
+        when %r{/}  then :template
+        else             :action
+        end
+        options.merge! key => action
+      elsif action
+        options.merge! :partial => action
+      end
+
+      if options.key?(:action) && options[:action].to_s.index("/")
+        options[:template] = options.delete(:action)
+      end
+
+      if options[:status]
+        options[:status] = interpret_status(options[:status]).to_i
+      end
+
+      options[:update] = blk if block_given?
+      options
+    end
+
+    def render(action = nil, options = {}, &blk)
+      options = _normalize_options(action, options, &blk)
+      super(options)
+    end
+
+    def render_to_string(action = nil, options = {}, &blk)
+      options = _normalize_options(action, options, &blk)
+      super(options)
+    end
+
+    # Redirects the browser to the target specified in +options+. This parameter can take one of three forms:
+    #
+    # * <tt>Hash</tt> - The URL will be generated by calling url_for with the +options+.
+    # * <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>: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>
+    #
+    # Examples:
+    #   redirect_to :action => "show", :id => 5
+    #   redirect_to post
+    #   redirect_to "http://www.rubyonrails.org"
+    #   redirect_to "/images/screenshot.jpg"
+    #   redirect_to articles_url
+    #   redirect_to :back
+    #
+    # The redirection happens as a "302 Moved" header unless otherwise specified.
+    #
+    # Examples:
+    #   redirect_to post_url(@post), :status=>:found
+    #   redirect_to :action=>'atom', :status=>:moved_permanently
+    #   redirect_to post_url(@post), :status=>301
+    #   redirect_to :action=>'atom', :status=>302
+    #
+    # 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?
+
+      status = if options.is_a?(Hash) && options.key?(:status)
+        interpret_status(options.delete(:status))
+      elsif response_status.key?(:status)
+        interpret_status(response_status[:status])
+      else
+        302
+      end
+
+      url = case options
+      # The scheme name consist of a letter followed by any combination of
+      # letters, digits, and the plus ("+"), period ("."), or hyphen ("-")
+      # characters; and is terminated by a colon (":").
+      when %r{^\w[\w\d+.-]*:.*}
+        options
+      when String
+        request.protocol + request.host_with_port + options
+      when :back
+        raise RedirectBackError unless refer = request.headers["Referer"]
+        refer
+      else
+        url_for(options)
+      end
+
+      super(url, status)
     end
   end
 end
diff --git a/actionpack/lib/action_controller/new_base/compatibility.rb b/actionpack/lib/action_controller/new_base/compatibility.rb
new file mode 100644
index 0000000000..f278c2da14
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/compatibility.rb
@@ -0,0 +1,138 @@
+module ActionController
+  module Rails2Compatibility
+    extend ActiveSupport::Concern
+
+    class ::ActionController::ActionControllerError < StandardError #:nodoc:
+    end
+
+    # Temporary hax
+    included do
+      ::ActionController::UnknownAction = ::AbstractController::ActionNotFound
+      ::ActionController::DoubleRenderError = ::AbstractController::DoubleRenderError
+
+      cattr_accessor :session_options
+      self.session_options = {}
+
+      cattr_accessor :allow_concurrency
+      self.allow_concurrency = false
+
+      cattr_accessor :param_parsers
+      self.param_parsers = { Mime::MULTIPART_FORM   => :multipart_form,
+                             Mime::URL_ENCODED_FORM => :url_encoded_form,
+                             Mime::XML              => :xml_simple,
+                             Mime::JSON             => :json }
+
+      cattr_accessor :relative_url_root
+      self.relative_url_root = ENV['RAILS_RELATIVE_URL_ROOT']
+
+      cattr_accessor :default_charset
+      self.default_charset = "utf-8"
+
+      # cattr_reader :protected_instance_variables
+      cattr_accessor :protected_instance_variables
+      self.protected_instance_variables = %w(@assigns @performed_redirect @performed_render @variables_added @request_origin @url @parent_controller
+                                          @action_name @before_filter_chain_aborted @action_cache_path @_headers @_params
+                                          @_flash @_response)
+
+      # Indicates whether or not optimise the generated named
+      # route helper methods
+      cattr_accessor :optimise_named_routes
+      self.optimise_named_routes = true
+
+      cattr_accessor :resources_path_names
+      self.resources_path_names = { :new => 'new', :edit => 'edit' }
+
+      # Controls the resource action separator
+      cattr_accessor :resource_action_separator
+      self.resource_action_separator = "/"
+
+      cattr_accessor :use_accept_header
+      self.use_accept_header = true
+
+      cattr_accessor :page_cache_directory
+      self.page_cache_directory = defined?(Rails.public_path) ? Rails.public_path : ""
+
+      cattr_reader :cache_store
+
+      cattr_accessor :consider_all_requests_local
+      self.consider_all_requests_local = true
+
+      # Prepends all the URL-generating helpers from AssetHelper. This makes it possible to easily move javascripts, stylesheets,
+      # and images to a dedicated asset server away from the main web server. Example:
+      #   ActionController::Base.asset_host = "http://assets.example.com"
+      cattr_accessor :asset_host
+
+      cattr_accessor :ip_spoofing_check
+      self.ip_spoofing_check = true
+    end
+
+    # For old tests
+    def initialize_template_class(*) end
+    def assign_shortcuts(*) end
+
+    # TODO: Remove this after we flip
+    def template
+      @template ||= _action_view
+    end
+
+    def process_action(*)
+      template
+      super
+    end
+
+    module ClassMethods
+      def consider_all_requests_local
+      end
+
+      def rescue_action(env)
+        raise env["action_dispatch.rescue.exception"]
+      end
+
+      # Defines the storage option for cached fragments
+      def cache_store=(store_option)
+        @@cache_store = ActiveSupport::Cache.lookup_store(store_option)
+      end
+    end
+
+    def render_to_body(options)
+      if options.is_a?(Hash) && options.key?(:template)
+        options[:template].sub!(/^\//, '')
+      end
+
+      options[:text] = nil if options[:nothing] == true
+
+      body = super
+      body = [' '] if body.blank?
+      body
+    end
+
+    def _handle_method_missing
+      method_missing(@_action_name.to_sym)
+    end
+
+    def method_for_action(action_name)
+      super || (respond_to?(:method_missing) && "_handle_method_missing")
+    end
+
+    def _layout_prefix(name)
+      super unless name =~ /\blayouts/
+    end
+
+    def performed?
+      response_body
+    end
+
+    # ==== Request only view path switching ====
+    def append_view_path(path)
+      view_paths.push(*path)
+    end
+
+    def prepend_view_path(path)
+      view_paths.unshift(*path)
+    end
+
+    def view_paths
+      _action_view.view_paths
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/conditional_get.rb b/actionpack/lib/action_controller/new_base/conditional_get.rb
new file mode 100644
index 0000000000..8bd6db500b
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/conditional_get.rb
@@ -0,0 +1,133 @@
+module ActionController
+  module ConditionalGet
+    extend ActiveSupport::Concern
+
+    depends_on RackConvenience
+
+    # Sets the etag, last_modified, or both on the response and renders a
+    # "304 Not Modified" response if the request is already fresh.
+    #
+    # Parameters:
+    # * <tt>:etag</tt>
+    # * <tt>:last_modified</tt>
+    # * <tt>:public</tt> By default the Cache-Control header is private, set this to true if you want your application to be cachable by other devices (proxy caches).
+    #
+    # Example:
+    #
+    #   def show
+    #     @article = Article.find(params[:id])
+    #     fresh_when(:etag => @article, :last_modified => @article.created_at.utc, :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.
+    #
+    def fresh_when(options)
+      options.assert_valid_keys(:etag, :last_modified, :public)
+
+      response.etag          = options[:etag]          if options[:etag]
+      response.last_modified = options[:last_modified] if options[:last_modified]
+
+      if options[:public]
+        cache_control = response.headers["Cache-Control"].split(",").map {|k| k.strip }
+        cache_control.delete("private")
+        cache_control.delete("no-cache")
+        cache_control << "public"
+        response.headers["Cache-Control"] = cache_control.join(', ')
+      end
+
+      if request.fresh?(response)
+        head :not_modified
+      end
+    end
+
+    # 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
+    # significant headers:
+    #
+    #   head :created, :location => person_path(@person)
+    #
+    # It can also be used to return exceptional conditions:
+    #
+    #   return head(:method_not_allowed) unless request.post?
+    #   return head(:bad_request) unless valid_request?
+    #   render
+    def head(*args)
+      if args.length > 2
+        raise ArgumentError, "too many arguments to head"
+      elsif args.empty?
+        raise ArgumentError, "too few arguments to head"
+      end
+      options = args.extract_options!
+      status = args.shift || options.delete(:status) || :ok
+
+      options.each do |key, value|
+        headers[key.to_s.dasherize.split(/-/).map { |v| v.capitalize }.join("-")] = value.to_s
+      end
+
+      render :nothing => true, :status => status
+    end
+
+    # 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.
+    #
+    # Parameters:
+    # * <tt>:etag</tt>
+    # * <tt>:last_modified</tt>
+    # * <tt>:public</tt> By default the Cache-Control header is private, set this to true if you want your application to be cachable by other devices (proxy caches).
+    #
+    # Example:
+    #
+    #   def show
+    #     @article = Article.find(params[:id])
+    #
+    #     if stale?(:etag => @article, :last_modified => @article.created_at.utc)
+    #       @statistics = @article.really_expensive_call
+    #       respond_to do |format|
+    #         # all the supported formats
+    #       end
+    #     end
+    #   end
+    def stale?(options)
+      fresh_when(options)
+      !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.
+    #
+    # Examples:
+    #   expires_in 20.minutes
+    #   expires_in 3.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.
+    def expires_in(seconds, options = {}) #:doc:
+      cache_control = response.headers["Cache-Control"].split(",").map {|k| k.strip }
+
+      cache_control << "max-age=#{seconds}"
+      cache_control.delete("no-cache")
+      if options[:public]
+        cache_control.delete("private")
+        cache_control << "public"
+      else
+        cache_control << "private"
+      end
+
+      # This allows for additional headers to be passed through like 'max-stale' => 5.hours
+      cache_control += options.symbolize_keys.reject{|k,v| k == :public || k == :private }.map{ |k,v| v == true ? k.to_s : "#{k.to_s}=#{v.to_s}"}
+
+      response.headers["Cache-Control"] = cache_control.join(', ')
+    end
+
+    # Sets a HTTP 1.1 Cache-Control header of "no-cache" so no caching should occur by the browser or
+    # intermediate caches (like caching proxy servers).
+    def expires_now #:doc:
+      response.headers["Cache-Control"] = "no-cache"
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/helpers.rb b/actionpack/lib/action_controller/new_base/helpers.rb
new file mode 100644
index 0000000000..c2ebd343e3
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/helpers.rb
@@ -0,0 +1,129 @@
+require 'active_support/core_ext/load_error'
+require 'active_support/core_ext/name_error'
+require 'active_support/dependencies'
+
+module ActionController
+  module Helpers
+    extend ActiveSupport::Concern
+
+    depends_on AbstractController::Helpers
+
+    included do
+      # Set the default directory for helpers
+      class_inheritable_accessor :helpers_dir
+      self.helpers_dir = (defined?(RAILS_ROOT) ? "#{RAILS_ROOT}/app/helpers" : "app/helpers")
+    end
+
+    module ClassMethods
+      def inherited(klass)
+        klass.__send__ :default_helper_module!
+        super
+      end
+
+      # The +helper+ class method can take a series of helper module names, a block, or both.
+      #
+      # * <tt>*args</tt>: One or more modules, strings or symbols, or the special symbol <tt>:all</tt>.
+      # * <tt>&block</tt>: A block defining helper methods.
+      #
+      # ==== Examples
+      # When the argument is a string or symbol, the method will provide the "_helper" suffix, require the file
+      # and include the module in the template class.  The second form illustrates how to include custom helpers
+      # when working with namespaced controllers, or other cases where the file containing the helper definition is not
+      # in one of Rails' standard load paths:
+      #   helper :foo             # => requires 'foo_helper' and includes FooHelper
+      #   helper 'resources/foo'  # => requires 'resources/foo_helper' and includes Resources::FooHelper
+      #
+      # When the argument is a module it will be included directly in the template class.
+      #   helper FooHelper # => includes FooHelper
+      #
+      # When the argument is the symbol <tt>:all</tt>, the controller will include all helpers beneath
+      # <tt>ActionController::Base.helpers_dir</tt> (defaults to <tt>app/helpers/**/*.rb</tt> under RAILS_ROOT).
+      #   helper :all
+      #
+      # Additionally, the +helper+ class method can receive and evaluate a block, making the methods defined available
+      # to the template.
+      #   # One line
+      #   helper { def hello() "Hello, world!" end }
+      #   # Multi-line
+      #   helper do
+      #     def foo(bar)
+      #       "#{bar} is the very best"
+      #     end
+      #   end
+      #
+      # Finally, all the above styles can be mixed together, and the +helper+ method can be invoked with a mix of
+      # +symbols+, +strings+, +modules+ and blocks.
+      #   helper(:three, BlindHelper) { def mice() 'mice' end }
+      #
+      def helper(*args, &block)
+        args.flatten.each do |arg|
+          case arg
+          when :all
+            helper all_application_helpers
+          when String, Symbol
+            file_name  = arg.to_s.underscore + '_helper'
+            class_name = file_name.camelize
+
+            begin
+              require_dependency(file_name)
+            rescue LoadError => load_error
+              requiree = / -- (.*?)(\.rb)?$/.match(load_error.message).to_a[1]
+              if requiree == file_name
+                msg = "Missing helper file helpers/#{file_name}.rb"
+                raise LoadError.new(msg).copy_blame!(load_error)
+              else
+                raise
+              end
+            end
+
+            super class_name.constantize
+          else
+            super args
+          end
+        end
+
+        # Evaluate block in template class if given.
+        master_helper_module.module_eval(&block) if block_given?
+      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
+      def helper_attr(*attrs)
+        attrs.flatten.each { |attr| helper_method(attr, "#{attr}=") }
+      end
+
+      # Provides a proxy to access helpers methods from outside the view.
+      def helpers
+        unless @helper_proxy
+          @helper_proxy = ActionView::Base.new
+          @helper_proxy.extend master_helper_module
+        else
+          @helper_proxy
+        end
+      end
+
+      private
+        def default_helper_module!
+          unless name.blank?
+            module_name = name.sub(/Controller$|$/, 'Helper')
+            module_path = module_name.split('::').map { |m| m.underscore }.join('/')
+            require_dependency module_path
+            helper module_name.constantize
+          end
+        rescue MissingSourceFile => e
+          raise unless e.is_missing? module_path
+        rescue NameError => e
+          raise unless e.missing_name? module_name
+        end
+
+        # Extract helper names from files in app/helpers/**/*.rb
+        def all_application_helpers
+          extract = /^#{Regexp.quote(helpers_dir)}\/?(.*)_helper.rb$/
+          Dir["#{helpers_dir}/**/*_helper.rb"].map { |file| file.sub extract, '\1' }
+        end
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/hide_actions.rb b/actionpack/lib/action_controller/new_base/hide_actions.rb
index 473a8ea72b..b45e520bee 100644
--- a/actionpack/lib/action_controller/new_base/hide_actions.rb
+++ b/actionpack/lib/action_controller/new_base/hide_actions.rb
@@ -1,31 +1,39 @@
 module ActionController
   module HideActions
-    setup do
+    extend ActiveSupport::Concern
+
+    included do
       extlib_inheritable_accessor :hidden_actions
-      self.hidden_actions ||= Set.new      
+      self.hidden_actions ||= Set.new
     end
-    
-    def action_methods() self.class.action_names end
-    def action_names() action_methods end    
-      
-  private
-  
-    def respond_to_action?(action_name)
-      !hidden_actions.include?(action_name) && (super || respond_to?(:method_missing))
+
+    def action_methods
+      self.class.action_names
     end
-    
-    module ClassMethods
-      def hide_action(*args)
-        args.each do |arg|
-          self.hidden_actions << arg.to_s
-        end
-      end
-      
-      def action_methods
-        @action_names ||= Set.new(super.reject {|name| self.hidden_actions.include?(name.to_s)})
-      end
 
-      def self.action_names() action_methods end
+    def action_names
+      action_methods
     end
+
+    private
+      def action_method?(action_name)
+        !hidden_actions.include?(action_name) && super
+      end
+
+      module ClassMethods
+        def hide_action(*args)
+          args.each do |arg|
+            self.hidden_actions << arg.to_s
+          end
+        end
+
+        def action_methods
+          @action_names ||= Set.new(super.reject {|name| self.hidden_actions.include?(name.to_s)})
+        end
+
+        def self.action_names
+          action_methods
+        end
+      end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/new_base/http.rb b/actionpack/lib/action_controller/new_base/http.rb
new file mode 100644
index 0000000000..c96aaaa865
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/http.rb
@@ -0,0 +1,91 @@
+require 'action_controller/abstract'
+require 'active_support/core_ext/module/delegation'
+
+module ActionController
+  class Http < AbstractController::Base
+    abstract!
+
+    # :api: public
+    attr_internal :params, :env
+
+    # :api: public
+    def self.controller_name
+      @controller_name ||= controller_path.split("/").last
+    end
+
+    # :api: public
+    def controller_name
+      self.class.controller_name
+    end
+
+    # :api: public
+    def self.controller_path
+      @controller_path ||= self.name.sub(/Controller$/, '').underscore
+    end
+
+    # :api: public
+    def controller_path
+      self.class.controller_path
+    end
+
+    # :api: private
+    def self.action_names
+      action_methods
+    end
+
+    # :api: private
+    def action_names
+      action_methods
+    end
+
+    # :api: plugin
+    def self.call(env)
+      controller = new
+      controller.call(env).to_rack
+    end
+
+    # The details below can be overridden to support a specific
+    # Request and Response object. The default ActionController::Base
+    # implementation includes RackConvenience, which makes a request
+    # and response object available. You might wish to control the
+    # environment and response manually for performance reasons.
+
+    attr_internal :status, :headers, :content_type
+
+    def initialize(*)
+      @_headers = {}
+      super
+    end
+
+    # Basic implements for content_type=, location=, and headers are
+    # provided to reduce the dependency on the RackConvenience module
+    # in Renderer and Redirector.
+
+    def content_type=(type)
+      headers["Content-Type"] = type.to_s
+    end
+
+    def location=(url)
+      headers["Location"] = url
+    end
+
+    # :api: private
+    def call(name, env)
+      @_env = env
+      process(name)
+      to_rack
+    end
+
+    # :api: private
+    def to_rack
+      [status, headers, response_body]
+    end
+
+    def self.action(name)
+      @actions ||= {}
+      @actions[name.to_s] ||= proc do |env|
+        new.call(name, env)
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/layouts.rb b/actionpack/lib/action_controller/new_base/layouts.rb
index a8e0809ac6..727358c394 100644
--- a/actionpack/lib/action_controller/new_base/layouts.rb
+++ b/actionpack/lib/action_controller/new_base/layouts.rb
@@ -1,37 +1,34 @@
 module ActionController
   module Layouts
+    extend ActiveSupport::Concern
+
     depends_on ActionController::Renderer
     depends_on AbstractController::Layouts
-    
+
     module ClassMethods
       def _implied_layout_name
         controller_path
       end
     end
-    
-    def render_to_body(options)
-      # render :text => ..., :layout => ...
-      # or
-      # render :anything_else
-      if !options.key?(:text) || options.key?(:layout)
-        options[:_layout] = options.key?(:layout) ? _layout_for_option(options[:layout]) : _default_layout
+
+    private
+      def _determine_template(options)
+        super
+        if (!options.key?(:text) && !options.key?(:inline) && !options.key?(:partial)) || options.key?(:layout)
+          options[:_layout] = _layout_for_option(options.key?(:layout) ? options[:layout] : :none, options[:_template].details)
+        end
       end
-      
-      super
-    end
-    
-  private
-  
-    def _layout_for_option(name)
-      case name
-      when String     then _layout_for_name(name)
-      when true       then _default_layout(true)
-      when false, nil then nil
-      else
-        raise ArgumentError, 
-          "String, true, or false, expected for `layout'; you passed #{name.inspect}"        
+
+      def _layout_for_option(name, details)
+        case name
+        when String     then _layout_for_name(name, details)
+        when true       then _default_layout(true, details)
+        when :none      then _default_layout(false, details)
+        when false, nil then nil
+        else
+          raise ArgumentError,
+            "String, true, or false, expected for `layout'; you passed #{name.inspect}"
+        end
       end
-    end
-    
   end
 end
diff --git a/actionpack/lib/action_controller/new_base/rack_convenience.rb b/actionpack/lib/action_controller/new_base/rack_convenience.rb
new file mode 100644
index 0000000000..5dfa7d12f3
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/rack_convenience.rb
@@ -0,0 +1,33 @@
+module ActionController
+  module RackConvenience
+    extend ActiveSupport::Concern
+
+    included do
+      delegate :headers, :status=, :location=,
+               :status, :location, :content_type, :to => "@_response"
+      attr_internal :request, :response
+    end
+
+    def call(name, env)
+      @_request = ActionDispatch::Request.new(env)
+      @_response = ActionDispatch::Response.new
+      @_response.request = request
+      super
+    end
+
+    def params
+      @_params ||= @_request.parameters
+    end
+
+    # :api: private
+    def to_rack
+      @_response.prepare!
+      @_response.to_a
+    end
+
+    def response_body=(body)
+      response.body = body if response
+      super
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/redirector.rb b/actionpack/lib/action_controller/new_base/redirector.rb
new file mode 100644
index 0000000000..20060b001f
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/redirector.rb
@@ -0,0 +1,19 @@
+module ActionController
+  class RedirectBackError < AbstractController::Error #:nodoc:
+    DEFAULT_MESSAGE = 'No HTTP_REFERER was set in the request to this action, so redirect_to :back could not be called successfully. If this is a test, make sure to specify request.env["HTTP_REFERER"].'
+
+    def initialize(message = nil)
+      super(message || DEFAULT_MESSAGE)
+    end
+  end
+
+  module Redirector
+    def redirect_to(url, status) #:doc:
+      raise AbstractController::DoubleRenderError if response_body
+      logger.info("Redirected to #{url}") if logger && logger.info?
+      self.status = status
+      self.location = url.gsub(/[\r\n]/, '')
+      self.response_body = "<html><body>You are being <a href=\"#{CGI.escapeHTML(url)}\">redirected</a>.</body></html>"
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/render_options.rb b/actionpack/lib/action_controller/new_base/render_options.rb
new file mode 100644
index 0000000000..04b954134f
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/render_options.rb
@@ -0,0 +1,103 @@
+module ActionController
+  module RenderOptions
+    extend ActiveSupport::Concern
+
+    included do
+      extlib_inheritable_accessor :_renderers
+      self._renderers = []
+    end
+
+    module ClassMethods
+      def _write_render_options
+        renderers = _renderers.map do |r|
+          <<-RUBY_EVAL
+            if options.key?(:#{r})
+              _process_options(options)
+              return _render_#{r}(options[:#{r}], options)
+            end
+          RUBY_EVAL
+        end
+
+        class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
+          def _handle_render_options(options)
+            #{renderers.join}
+          end
+        RUBY_EVAL
+      end
+
+      def _add_render_option(name)
+        _renderers << name
+        _write_render_options
+      end
+    end
+
+    def render_to_body(options)
+      _handle_render_options(options) || super
+    end
+  end
+
+  module RenderOption #:nodoc:
+    def self.extended(base)
+      base.extend ActiveSupport::Concern
+      base.depends_on ::ActionController::RenderOptions
+
+      def base.register_renderer(name)
+        included { _add_render_option(name) }
+      end
+    end
+  end
+
+  module Renderers
+    module Json
+      extend RenderOption
+      register_renderer :json
+
+      def _render_json(json, options)
+        json = ActiveSupport::JSON.encode(json) unless json.respond_to?(:to_str)
+        json = "#{options[:callback]}(#{json})" unless options[:callback].blank?
+        self.content_type ||= Mime::JSON
+        self.response_body = json
+      end
+    end
+
+    module Js
+      extend RenderOption
+      register_renderer :js
+
+      def _render_js(js, options)
+        self.content_type ||= Mime::JS
+        self.response_body = js
+      end
+    end
+
+    module Xml
+      extend RenderOption
+      register_renderer :xml
+
+      def _render_xml(xml, options)
+        self.content_type ||= Mime::XML
+        self.response_body  = xml.respond_to?(:to_xml) ? xml.to_xml : xml
+      end
+    end
+
+    module RJS
+      extend RenderOption
+      register_renderer :update
+
+      def _render_update(proc, options)
+        generator = ActionView::Helpers::PrototypeHelper::JavaScriptGenerator.new(_action_view, &proc)
+        self.content_type = Mime::JS
+        self.response_body = generator.to_s
+      end
+    end
+
+    module All
+      extend ActiveSupport::Concern
+
+      depends_on ActionController::Renderers::Json
+      depends_on ActionController::Renderers::Js
+      depends_on ActionController::Renderers::Xml
+      depends_on ActionController::Renderers::RJS
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/renderer.rb b/actionpack/lib/action_controller/new_base/renderer.rb
index ed34c46aed..e132d4fdbb 100644
--- a/actionpack/lib/action_controller/new_base/renderer.rb
+++ b/actionpack/lib/action_controller/new_base/renderer.rb
@@ -1,62 +1,78 @@
 module ActionController
   module Renderer
+    extend ActiveSupport::Concern
+
     depends_on AbstractController::Renderer
-    
-    def initialize(*)
-      self.formats = [:html]
+
+    def process_action(*)
+      self.formats = request.formats.map {|x| x.to_sym}
       super
     end
-    
-    def render(action, options = {})
-      # TODO: Move this into #render_to_body
-      if action.is_a?(Hash)
-        options, action = action, nil 
-      else
-        options.merge! :action => action
+
+    def render(options)
+      super
+      options[:_template] ||= _action_view._partial
+      self.content_type ||= begin
+        mime = options[:_template].mime_type
+        formats.include?(mime && mime.to_sym) || formats.include?(:all) ? mime : Mime::Type.lookup_by_extension(formats.first)
       end
-      
-      _process_options(options)
-      
-      self.response_body = render_to_body(options)
+      response_body
     end
 
     def render_to_body(options)
-      unless options.is_a?(Hash)
-        options = {:action => options}
-      end
+      _process_options(options)
 
-      if options.key?(:text)
-        options[:_template] = ActionView::TextTemplate.new(_text(options))
-        template = nil
-      elsif options.key?(:template)
-        options[:_template_name] = options[:template]
-      elsif options.key?(:action)
-        options[:_template_name] = options[:action].to_s
-        options[:_prefix] = _prefix 
+      if options.key?(:partial)
+        _render_partial(options[:partial], options)
       end
-      
-      super(options)
+
+      super
     end
-    
-  private
-  
-    def _prefix
-      controller_path
-    end  
-  
-    def _text(options)
-      text = options[:text]
-
-      case text
-      when nil then " "
-      else text.to_s
+
+    private
+      def _prefix
+        controller_path
       end
-    end
-  
-    def _process_options(options)
-      if status = options[:status]
-        response.status = status.to_i
+
+      def _determine_template(options)
+        if options.key?(:text)
+          options[:_template] = ActionView::TextTemplate.new(options[:text], formats.first)
+        elsif options.key?(:inline)
+          handler = ActionView::Template.handler_class_for_extension(options[:type] || "erb")
+          template = ActionView::Template.new(options[:inline], "inline #{options[:inline].inspect}", handler, {})
+          options[:_template] = template
+        elsif options.key?(:template)
+          options[:_template_name] = options[:template]
+        elsif options.key?(:file)
+          options[:_template_name] = options[:file]
+        elsif !options.key?(:partial)
+          options[:_template_name] = (options[:action] || action_name).to_s
+          options[:_prefix] = _prefix
+        end
+
+        super
+      end
+
+      def _render_partial(partial, options)
+        case partial
+        when true
+          options[:_prefix] = _prefix
+        when String
+          options[:_prefix] = _prefix unless partial.index('/')
+          options[:_template_name] = partial
+        else
+          options[:_partial_object] = true
+          return
+        end
+
+        options[:_partial] = options[:object] || true
+      end
+
+      def _process_options(options)
+        status, content_type, location = options.values_at(:status, :content_type, :location)
+        self.status = status if status
+        self.content_type = content_type if content_type
+        self.headers["Location"] = url_for(location) if location
       end
-    end
   end
 end
diff --git a/actionpack/lib/action_controller/new_base/rescuable.rb b/actionpack/lib/action_controller/new_base/rescuable.rb
new file mode 100644
index 0000000000..029e643d93
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/rescuable.rb
@@ -0,0 +1,52 @@
+module ActionController #:nodoc:
+  # Actions that fail to perform as expected throw exceptions. These
+  # exceptions can either be rescued for the public view (with a nice
+  # user-friendly explanation) or for the developers view (with tons of
+  # debugging information). The developers view is already implemented by
+  # the Action Controller, but the public view should be tailored to your
+  # specific application.
+  #
+  # The default behavior for public exceptions is to render a static html
+  # file with the name of the error code thrown.  If no such file exists, an
+  # empty response is sent with the correct status code.
+  #
+  # You can override what constitutes a local request by overriding the
+  # <tt>local_request?</tt> method in your own controller. Custom rescue
+  # behavior is achieved by overriding the <tt>rescue_action_in_public</tt>
+  # and <tt>rescue_action_locally</tt> methods.
+  module Rescue
+    extend ActiveSupport::Concern
+
+    included do
+      include ActiveSupport::Rescuable
+    end
+
+    module ClassMethods
+      # This can be removed once we can move action(:_rescue_action) into middlewares.rb
+      # Currently, it does controller.method(:rescue_action), which is hiding the implementation
+      # difference between the old and new base.
+      def rescue_action(env)
+        action(:_rescue_action).call(env)
+      end
+    end
+
+    attr_internal :rescued_exception
+
+    private
+      def method_for_action(action_name)
+        return action_name if self.rescued_exception = request.env.delete("action_dispatch.rescue.exception")
+        super
+      end
+
+      def _rescue_action
+        rescue_with_handler(rescued_exception) || raise(rescued_exception)
+      end
+
+      def process_action(*)
+        super
+      rescue Exception => exception
+        self.rescued_exception = exception
+        _rescue_action
+      end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/session.rb b/actionpack/lib/action_controller/new_base/session.rb
new file mode 100644
index 0000000000..a585630230
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/session.rb
@@ -0,0 +1,15 @@
+module ActionController
+  module Session
+    extend ActiveSupport::Concern
+
+    depends_on RackConvenience
+
+    def session
+      @_request.session
+    end
+
+    def reset_session
+      @_request.reset_session
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/testing.rb b/actionpack/lib/action_controller/new_base/testing.rb
new file mode 100644
index 0000000000..e8d210d149
--- /dev/null
+++ b/actionpack/lib/action_controller/new_base/testing.rb
@@ -0,0 +1,39 @@
+module ActionController
+  module Testing
+    extend ActiveSupport::Concern
+
+    depends_on RackConvenience
+
+    # OMG MEGA HAX
+    def process_with_new_base_test(request, response)
+      @_request = request
+      @_response = response
+      @_response.request = request
+      ret = process(request.parameters[:action])
+      @_response.body ||= self.response_body
+      @_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
+      @_response.headers.replace(new_headers)
+    end
+
+    module ClassMethods
+      def before_filters
+        _process_action_callbacks.find_all{|x| x.kind == :before}.map{|x| x.name}
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/new_base/url_for.rb b/actionpack/lib/action_controller/new_base/url_for.rb
index af5b21012b..902cac4d15 100644
--- a/actionpack/lib/action_controller/new_base/url_for.rb
+++ b/actionpack/lib/action_controller/new_base/url_for.rb
@@ -1,5 +1,14 @@
 module ActionController
   module UrlFor
+    extend ActiveSupport::Concern
+
+    depends_on RackConvenience
+
+    def process_action(*)
+      initialize_current_url
+      super
+    end
+
     def initialize_current_url
       @url = UrlRewriter.new(request, params.clone)
     end
@@ -16,7 +25,7 @@ module ActionController
     # by this method.
     def default_url_options(options = nil)
     end
-    
+
     def rewrite_options(options) #:nodoc:
       if defaults = default_url_options(options)
         defaults.merge(options)
@@ -24,7 +33,7 @@ module ActionController
         options
       end
     end
-    
+
     def url_for(options = {})
       options ||= {}
       case options
@@ -37,4 +46,4 @@ module ActionController
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/record_identifier.rb b/actionpack/lib/action_controller/record_identifier.rb
index 6bda27e23a..b4408e4e1d 100644
--- a/actionpack/lib/action_controller/record_identifier.rb
+++ b/actionpack/lib/action_controller/record_identifier.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/module'
+
 module ActionController
   # The record identifier encapsulates a number of naming conventions for dealing with records, like Active Records or 
   # Active Resources or pretty much any other model type that has an id. These patterns are then used to try elevate
diff --git a/actionpack/lib/action_controller/routing.rb b/actionpack/lib/action_controller/routing.rb
index c0eb61340b..ce59866531 100644
--- a/actionpack/lib/action_controller/routing.rb
+++ b/actionpack/lib/action_controller/routing.rb
@@ -1,5 +1,9 @@
 require 'cgi'
 require 'uri'
+require 'set'
+
+require 'active_support/core_ext/module/aliasing'
+require 'active_support/core_ext/module/attribute_accessors'
 require 'action_controller/routing/optimisations'
 require 'action_controller/routing/routing_ext'
 require 'action_controller/routing/route'
diff --git a/actionpack/lib/action_controller/routing/builder.rb b/actionpack/lib/action_controller/routing/builder.rb
index d9590c88b8..42ad12e1ea 100644
--- a/actionpack/lib/action_controller/routing/builder.rb
+++ b/actionpack/lib/action_controller/routing/builder.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/hash/except'
+
 module ActionController
   module Routing
     class RouteBuilder #:nodoc:
diff --git a/actionpack/lib/action_controller/routing/route.rb b/actionpack/lib/action_controller/routing/route.rb
index e2077edad8..eba05a3c5a 100644
--- a/actionpack/lib/action_controller/routing/route.rb
+++ b/actionpack/lib/action_controller/routing/route.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/object/misc'
+
 module ActionController
   module Routing
     class Route #:nodoc:
@@ -65,7 +67,7 @@ module ActionController
       #   map.connect '/page/:id', :controller => 'pages', :action => 'show', :id => /\d+/
       #
       def parameter_shell
-        @parameter_shell ||= returning({}) do |shell|
+        @parameter_shell ||= {}.tap do |shell|
           requirements.each do |key, requirement|
             shell[key] = requirement unless requirement.is_a? Regexp
           end
@@ -76,7 +78,7 @@ module ActionController
       # includes keys that appear inside the path, and keys that have requirements
       # placed upon them.
       def significant_keys
-        @significant_keys ||= returning([]) do |sk|
+        @significant_keys ||= [].tap do |sk|
           segments.each { |segment| sk << segment.key if segment.respond_to? :key }
           sk.concat requirements.keys
           sk.uniq!
@@ -86,7 +88,7 @@ module ActionController
       # Return a hash of key/value pairs representing the keys in the route that
       # have defaults, or which are specified by non-regexp requirements.
       def defaults
-        @defaults ||= returning({}) do |hash|
+        @defaults ||= {}.tap do |hash|
           segments.each do |segment|
             next unless segment.respond_to? :default
             hash[segment.key] = segment.default unless segment.default.nil?
diff --git a/actionpack/lib/action_controller/routing/route_set.rb b/actionpack/lib/action_controller/routing/route_set.rb
index 70cd1f642d..45ad8a3a3b 100644
--- a/actionpack/lib/action_controller/routing/route_set.rb
+++ b/actionpack/lib/action_controller/routing/route_set.rb
@@ -430,7 +430,7 @@ module ActionController
       def call(env)
         request = ActionDispatch::Request.new(env)
         app = Routing::Routes.recognize(request)
-        app.call(env).to_a
+        app.action(request.parameters[:action] || 'index').call(env)
       end
 
       def recognize(request)
diff --git a/actionpack/lib/action_controller/routing/segments.rb b/actionpack/lib/action_controller/routing/segments.rb
index 4f936d51d2..2603855476 100644
--- a/actionpack/lib/action_controller/routing/segments.rb
+++ b/actionpack/lib/action_controller/routing/segments.rb
@@ -1,7 +1,7 @@
 module ActionController
   module Routing
     class Segment #:nodoc:
-      RESERVED_PCHAR = ':@&=+$,;'
+      RESERVED_PCHAR = ':@&=+$,;%'
       SAFE_PCHAR = "#{URI::REGEXP::PATTERN::UNRESERVED}#{RESERVED_PCHAR}"
       if RUBY_VERSION >= '1.9'
         UNSAFE_PCHAR = Regexp.new("[^#{SAFE_PCHAR}]", false).freeze
diff --git a/actionpack/lib/action_controller/testing/assertions/response.rb b/actionpack/lib/action_controller/testing/assertions/response.rb
deleted file mode 100644
index ca0a9bbf52..0000000000
--- a/actionpack/lib/action_controller/testing/assertions/response.rb
+++ /dev/null
@@ -1,150 +0,0 @@
-module ActionController
-  module Assertions
-    # A small suite of assertions that test responses from Rails applications.
-    module ResponseAssertions
-      # Asserts that the response is one of the following types:
-      #
-      # * <tt>:success</tt>   - Status code was 200
-      # * <tt>:redirect</tt>  - Status code was in the 300-399 range
-      # * <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.
-      #
-      # ==== Examples
-      #
-      #   # assert that the response was a redirection
-      #   assert_response :redirect
-      #
-      #   # assert that the response code was status code 401 (unauthorized)
-      #   assert_response 401
-      #
-      def assert_response(type, message = nil)
-        clean_backtrace do
-          if [ :success, :missing, :redirect, :error ].include?(type) && @response.send("#{type}?")
-            assert_block("") { true } # to count the assertion
-          elsif type.is_a?(Fixnum) && @response.response_code == type
-            assert_block("") { true } # to count the assertion
-          elsif type.is_a?(Symbol) && @response.response_code == ActionDispatch::StatusCodes::SYMBOL_TO_STATUS_CODE[type]
-            assert_block("") { true } # to count the assertion
-          else
-            if @response.error?
-              exception = @response.template.instance_variable_get(:@exception)
-              exception_message = exception && exception.message
-              assert_block(build_message(message, "Expected response to be a <?>, but was <?>\n<?>", type, @response.response_code, exception_message.to_s)) { false }
-            else
-              assert_block(build_message(message, "Expected response to be a <?>, but was <?>", type, @response.response_code)) { false }
-            end
-          end
-        end
-      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.
-      #
-      # ==== Examples
-      #
-      #   # assert that the redirection was to the "index" action on the WeblogController
-      #   assert_redirected_to :controller => "weblog", :action => "index"
-      #
-      #   # assert that the redirection was to the named route login_url
-      #   assert_redirected_to login_url
-      #
-      #   # assert that the redirection was to the url for @customer
-      #   assert_redirected_to @customer
-      #
-      def assert_redirected_to(options = {}, message=nil)
-        clean_backtrace do
-          assert_response(:redirect, message)
-          return true if options == @response.redirected_to
-
-          # Support partial arguments for hash redirections
-          if options.is_a?(Hash) && @response.redirected_to.is_a?(Hash)
-            return true if options.all? {|(key, value)| @response.redirected_to[key] == value}
-          end
-
-          redirected_to_after_normalisation = normalize_argument_to_redirection(@response.redirected_to)
-          options_after_normalisation       = normalize_argument_to_redirection(options)
-
-          if redirected_to_after_normalisation != options_after_normalisation
-            flunk "Expected response to be a redirect to <#{options_after_normalisation}> but was a redirect to <#{redirected_to_after_normalisation}>"
-          end
-        end
-      end
-
-      # Asserts that the request was rendered with the appropriate template file or partials
-      #
-      # ==== Examples
-      #
-      #   # assert that the "new" view template was rendered
-      #   assert_template "new"
-      #
-      #   # assert that the "_customer" partial was rendered twice
-      #   assert_template :partial => '_customer', :count => 2
-      #
-      #   # assert that no partials were rendered
-      #   assert_template :partial => false
-      #
-      def assert_template(options = {}, message = nil)
-        clean_backtrace do
-          case options
-           when NilClass, String
-            rendered = @response.rendered[:template].to_s
-            msg = build_message(message,
-                    "expecting <?> but rendering with <?>",
-                    options, rendered)
-            assert_block(msg) do
-              if options.nil?
-                @response.rendered[:template].blank?
-              else
-                rendered.to_s.match(options)
-              end
-            end
-          when Hash
-            if expected_partial = options[:partial]
-              partials = @response.rendered[:partials]
-              if expected_count = options[:count]
-                found = partials.detect { |p, _| p.to_s.match(expected_partial) }
-                actual_count = found.nil? ? 0 : found.second
-                msg = build_message(message,
-                        "expecting ? to be rendered ? time(s) but rendered ? time(s)",
-                         expected_partial, expected_count, actual_count)
-                assert(actual_count == expected_count.to_i, msg)
-              else
-                msg = build_message(message,
-                        "expecting partial <?> but action rendered <?>",
-                        options[:partial], partials.keys)
-                assert(partials.keys.any? { |p| p.to_s.match(expected_partial) }, msg)
-              end
-            else
-              assert @response.rendered[:partials].empty?,
-                "Expected no partials to be rendered"
-            end
-          end
-        end
-      end
-
-      private
-        # Proxy to to_param if the object will respond to it.
-        def parameterize(value)
-          value.respond_to?(:to_param) ? value.to_param : value
-        end
-
-        def normalize_argument_to_redirection(fragment)
-          after_routing = @controller.url_for(fragment)
-          if after_routing =~ %r{^\w+://.*}
-            after_routing
-          else
-            # FIXME - this should probably get removed.
-            if after_routing.first != '/'
-              after_routing = '/' + after_routing
-            end
-            @request.protocol + @request.host_with_port + after_routing
-          end
-        end
-    end
-  end
-end
diff --git a/actionpack/lib/action_controller/testing/integration.rb b/actionpack/lib/action_controller/testing/integration.rb
index d51b9b63ff..af4ccb7837 100644
--- a/actionpack/lib/action_controller/testing/integration.rb
+++ b/actionpack/lib/action_controller/testing/integration.rb
@@ -2,8 +2,119 @@ require 'stringio'
 require 'uri'
 require 'active_support/test_case'
 
+require 'rack/mock_session'
+require 'rack/test/cookie_jar'
+
 module ActionController
   module Integration #:nodoc:
+    module RequestHelpers
+      # Performs a GET request with the given parameters.
+      #
+      # - +path+: The URI (as a String) on which you want to perform a GET
+      #   request.
+      # - +parameters+: The HTTP parameters that you want to pass. This may
+      #   be +nil+,
+      #   a Hash, or a String that is appropriately encoded
+      #   (<tt>application/x-www-form-urlencoded</tt> or
+      #   <tt>multipart/form-data</tt>).
+      # - +headers+: Additional HTTP headers to pass, as a Hash. The keys will
+      #   automatically be upcased, with the prefix 'HTTP_' added if needed.
+      #
+      # This method returns an Response object, which one can use to
+      # inspect the details of the response. Furthermore, if this method was
+      # called from an ActionController::IntegrationTest object, then that
+      # object's <tt>@response</tt> instance variable will point to the same
+      # response object.
+      #
+      # You can also perform POST, PUT, DELETE, and HEAD requests with +post+,
+      # +put+, +delete+, and +head+.
+      def get(path, parameters = nil, headers = nil)
+        process :get, path, parameters, headers
+      end
+
+      # Performs a POST request with the given parameters. See get() for more
+      # details.
+      def post(path, parameters = nil, headers = nil)
+        process :post, path, parameters, headers
+      end
+
+      # Performs a PUT request with the given parameters. See get() for more
+      # details.
+      def put(path, parameters = nil, headers = nil)
+        process :put, path, parameters, headers
+      end
+
+      # Performs a DELETE request with the given parameters. See get() for
+      # more details.
+      def delete(path, parameters = nil, headers = nil)
+        process :delete, path, parameters, headers
+      end
+
+      # Performs a HEAD request with the given parameters. See get() for more
+      # details.
+      def head(path, parameters = nil, headers = nil)
+        process :head, path, parameters, headers
+      end
+
+      # Performs an XMLHttpRequest request with the given parameters, mirroring
+      # a request from the Prototype library.
+      #
+      # The request_method is :get, :post, :put, :delete or :head; the
+      # parameters are +nil+, a hash, or a url-encoded or multipart string;
+      # the headers are a hash.  Keys are automatically upcased and prefixed
+      # with 'HTTP_' if not already.
+      def xml_http_request(request_method, path, parameters = nil, headers = nil)
+        headers ||= {}
+        headers['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest'
+        headers['HTTP_ACCEPT'] ||= [Mime::JS, Mime::HTML, Mime::XML, 'text/xml', Mime::ALL].join(', ')
+        process(request_method, path, parameters, headers)
+      end
+      alias xhr :xml_http_request
+
+      # Follow a single redirect response. If the last response was not a
+      # redirect, an exception will be raised. Otherwise, the redirect is
+      # performed on the location header.
+      def follow_redirect!
+        raise "not a redirect! #{status} #{status_message}" unless redirect?
+        get(response.location)
+        status
+      end
+
+      # Performs a request using the specified method, following any subsequent
+      # redirect. Note that the redirects are followed until the response is
+      # not a redirect--this means you may run into an infinite loop if your
+      # redirect loops back to itself.
+      def request_via_redirect(http_method, path, parameters = nil, headers = nil)
+        process(http_method, path, parameters, headers)
+        follow_redirect! while redirect?
+        status
+      end
+
+      # Performs a GET request, following any subsequent redirect.
+      # See +request_via_redirect+ for more information.
+      def get_via_redirect(path, parameters = nil, headers = nil)
+        request_via_redirect(:get, path, parameters, headers)
+      end
+
+      # Performs a POST request, following any subsequent redirect.
+      # See +request_via_redirect+ for more information.
+      def post_via_redirect(path, parameters = nil, headers = nil)
+        request_via_redirect(:post, path, parameters, headers)
+      end
+
+      # Performs a PUT request, following any subsequent redirect.
+      # See +request_via_redirect+ for more information.
+      def put_via_redirect(path, parameters = nil, headers = nil)
+        request_via_redirect(:put, path, parameters, headers)
+      end
+
+      # Performs a DELETE request, following any subsequent redirect.
+      # See +request_via_redirect+ for more information.
+      def delete_via_redirect(path, parameters = nil, headers = nil)
+        request_via_redirect(:delete, path, parameters, headers)
+      end
+    end
+
     # An integration Session instance represents a set of requests and responses
     # performed sequentially by some virtual user. Because you can instantiate
     # multiple sessions and run them side-by-side, you can also mimic (to some
@@ -13,24 +124,20 @@ module ActionController
     # IntegrationTest#open_session, rather than instantiating
     # Integration::Session directly.
     class Session
+      DEFAULT_HOST = "www.example.com"
+
       include Test::Unit::Assertions
-      include ActionController::TestCase::Assertions
+      include ActionDispatch::Assertions
       include ActionController::TestProcess
+      include RequestHelpers
 
-      # Rack application to use
-      attr_accessor :application
-
-      # The integer HTTP status code of the last request.
-      attr_reader :status
-
-      # The status message that accompanied the status code of the last request.
-      attr_reader :status_message
-
-      # The body of the last request.
-      attr_reader :body
+      %w( status status_message headers body redirect? ).each do |method|
+        delegate method, :to => :response, :allow_nil => true
+      end
 
-      # The URI of the last request.
-      attr_reader :path
+      %w( path ).each do |method|
+        delegate method, :to => :request, :allow_nil => true
+      end
 
       # The hostname used in the last request.
       attr_accessor :host
@@ -43,10 +150,9 @@ module ActionController
 
       # A map of the cookies returned by the last response, and which will be
       # sent with the next request.
-      attr_reader :cookies
-
-      # A map of the headers returned by the last response.
-      attr_reader :headers
+      def cookies
+        @mock_session.cookie_jar
+      end
 
       # A reference to the controller instance used by the last request.
       attr_reader :controller
@@ -60,12 +166,9 @@ module ActionController
       # A running counter of the number of requests processed.
       attr_accessor :request_count
 
-      class MultiPartNeededException < Exception
-      end
-
       # Create and initialize a new Session instance.
       def initialize(app = nil)
-        @application = app || ActionController::Dispatcher.new
+        @app = app || ActionController::Dispatcher.new
         reset!
       end
 
@@ -75,14 +178,12 @@ module ActionController
       #
       #   session.reset!
       def reset!
-        @status = @path = @headers = nil
-        @result = @status_message = nil
         @https = false
-        @cookies = {}
+        @mock_session = Rack::MockSession.new(@app, DEFAULT_HOST)
         @controller = @request = @response = nil
         @request_count = 0
 
-        self.host        = "www.example.com"
+        self.host        = DEFAULT_HOST
         self.remote_addr = "127.0.0.1"
         self.accept      = "text/xml,application/xml,application/xhtml+xml," +
                            "text/html;q=0.9,text/plain;q=0.8,image/png," +
@@ -124,117 +225,6 @@ module ActionController
         @host = name
       end
 
-      # Follow a single redirect response. If the last response was not a
-      # redirect, an exception will be raised. Otherwise, the redirect is
-      # performed on the location header.
-      def follow_redirect!
-        raise "not a redirect! #{@status} #{@status_message}" unless redirect?
-        get(interpret_uri(headers['location']))
-        status
-      end
-
-      # Performs a request using the specified method, following any subsequent
-      # redirect. Note that the redirects are followed until the response is
-      # not a redirect--this means you may run into an infinite loop if your
-      # redirect loops back to itself.
-      def request_via_redirect(http_method, path, parameters = nil, headers = nil)
-        send(http_method, path, parameters, headers)
-        follow_redirect! while redirect?
-        status
-      end
-
-      # Performs a GET request, following any subsequent redirect.
-      # See +request_via_redirect+ for more information.
-      def get_via_redirect(path, parameters = nil, headers = nil)
-        request_via_redirect(:get, path, parameters, headers)
-      end
-
-      # Performs a POST request, following any subsequent redirect.
-      # See +request_via_redirect+ for more information.
-      def post_via_redirect(path, parameters = nil, headers = nil)
-        request_via_redirect(:post, path, parameters, headers)
-      end
-
-      # Performs a PUT request, following any subsequent redirect.
-      # See +request_via_redirect+ for more information.
-      def put_via_redirect(path, parameters = nil, headers = nil)
-        request_via_redirect(:put, path, parameters, headers)
-      end
-
-      # Performs a DELETE request, following any subsequent redirect.
-      # See +request_via_redirect+ for more information.
-      def delete_via_redirect(path, parameters = nil, headers = nil)
-        request_via_redirect(:delete, path, parameters, headers)
-      end
-
-      # Returns +true+ if the last response was a redirect.
-      def redirect?
-        status/100 == 3
-      end
-
-      # Performs a GET request with the given parameters.
-      #
-      # - +path+: The URI (as a String) on which you want to perform a GET
-      #   request.
-      # - +parameters+: The HTTP parameters that you want to pass. This may
-      #   be +nil+,
-      #   a Hash, or a String that is appropriately encoded
-      #   (<tt>application/x-www-form-urlencoded</tt> or
-      #   <tt>multipart/form-data</tt>).
-      # - +headers+: Additional HTTP headers to pass, as a Hash. The keys will
-      #   automatically be upcased, with the prefix 'HTTP_' added if needed.
-      #
-      # This method returns an Response object, which one can use to
-      # inspect the details of the response. Furthermore, if this method was
-      # called from an ActionController::IntegrationTest object, then that
-      # object's <tt>@response</tt> instance variable will point to the same
-      # response object.
-      #
-      # You can also perform POST, PUT, DELETE, and HEAD requests with +post+,
-      # +put+, +delete+, and +head+.
-      def get(path, parameters = nil, headers = nil)
-        process :get, path, parameters, headers
-      end
-
-      # Performs a POST request with the given parameters. See get() for more
-      # details.
-      def post(path, parameters = nil, headers = nil)
-        process :post, path, parameters, headers
-      end
-
-      # Performs a PUT request with the given parameters. See get() for more
-      # details.
-      def put(path, parameters = nil, headers = nil)
-        process :put, path, parameters, headers
-      end
-
-      # Performs a DELETE request with the given parameters. See get() for
-      # more details.
-      def delete(path, parameters = nil, headers = nil)
-        process :delete, path, parameters, headers
-      end
-
-      # Performs a HEAD request with the given parameters. See get() for more
-      # details.
-      def head(path, parameters = nil, headers = nil)
-        process :head, path, parameters, headers
-      end
-
-      # Performs an XMLHttpRequest request with the given parameters, mirroring
-      # a request from the Prototype library.
-      #
-      # The request_method is :get, :post, :put, :delete or :head; the
-      # parameters are +nil+, a hash, or a url-encoded or multipart string;
-      # the headers are a hash.  Keys are automatically upcased and prefixed
-      # with 'HTTP_' if not already.
-      def xml_http_request(request_method, path, parameters = nil, headers = nil)
-        headers ||= {}
-        headers['X-Requested-With'] = 'XMLHttpRequest'
-        headers['Accept'] ||= [Mime::JS, Mime::HTML, Mime::XML, 'text/xml', Mime::ALL].join(', ')
-        process(request_method, path, parameters, headers)
-      end
-      alias xhr :xml_http_request
-
       # Returns the URL for the given options, according to the rules specified
       # in the application's routes.
       def url_for(options)
@@ -244,137 +234,54 @@ module ActionController
       end
 
       private
-        # Tailors the session based on the given URI, setting the HTTPS value
-        # and the hostname.
-        def interpret_uri(path)
-          location = URI.parse(path)
-          https! URI::HTTPS === location if location.scheme
-          host! location.host if location.host
-          location.query ? "#{location.path}?#{location.query}" : location.path
-        end
 
         # Performs the actual request.
-        def process(method, path, parameters = nil, headers = nil)
-          data = requestify(parameters)
-          path = interpret_uri(path) if path =~ %r{://}
-          path = "/#{path}" unless path[0] == ?/
-          @path = path
-          env = {}
-
-          if method == :get
-            env["QUERY_STRING"] = data
-            data = nil
+        def process(method, path, parameters = nil, rack_environment = nil)
+          if path =~ %r{://}
+            location = URI.parse(path)
+            https! URI::HTTPS === location if location.scheme
+            host! location.host if location.host
+            path = location.query ? "#{location.path}?#{location.query}" : location.path
           end
 
-          env["QUERY_STRING"] ||= ""
+          [ControllerCapture, ActionController::ProcessWithTest].each do |mod|
+            unless ActionController::Base < mod
+              ActionController::Base.class_eval { include mod }
+            end
+          end
 
-          data = data.is_a?(IO) ? data : StringIO.new(data || '')
+          opts = {
+            :method => method,
+            :params => parameters,
 
-          env.update(
-            "REQUEST_METHOD"  => method.to_s.upcase,
             "SERVER_NAME"     => host,
             "SERVER_PORT"     => (https? ? "443" : "80"),
             "HTTPS"           => https? ? "on" : "off",
             "rack.url_scheme" => https? ? "https" : "http",
-            "SCRIPT_NAME"     => "",
 
             "REQUEST_URI"    => path,
             "PATH_INFO"      => path,
             "HTTP_HOST"      => host,
             "REMOTE_ADDR"    => remote_addr,
             "CONTENT_TYPE"   => "application/x-www-form-urlencoded",
-            "CONTENT_LENGTH" => data ? data.length.to_s : nil,
-            "HTTP_COOKIE"    => encode_cookies,
-            "HTTP_ACCEPT"    => accept,
-
-            "rack.version"      => [0,1],
-            "rack.input"        => data,
-            "rack.errors"       => StringIO.new,
-            "rack.multithread"  => true,
-            "rack.multiprocess" => true,
-            "rack.run_once"     => false,
-
-            "rack.test" => true
-          )
-
-          (headers || {}).each do |key, value|
-            key = key.to_s.upcase.gsub(/-/, "_")
-            key = "HTTP_#{key}" unless env.has_key?(key) || key =~ /^HTTP_/
-            env[key] = value
-          end
+            "HTTP_ACCEPT"    => accept
+          }
+          env = Rack::MockRequest.env_for(path, opts)
 
-          [ControllerCapture, ActionController::ProcessWithTest].each do |mod|
-            unless ActionController::Base < mod
-              ActionController::Base.class_eval { include mod }
-            end
+          (rack_environment || {}).each do |key, value|
+            env[key] = value
           end
 
-          ActionController::Base.clear_last_instantiation!
-
-          app = @application
-          # Rack::Lint doesn't accept String headers or bodies in Ruby 1.9
-          unless RUBY_VERSION >= '1.9.0' && Rack.release <= '0.9.0'
-            app = Rack::Lint.new(app)
+          @controller = ActionController::Base.capture_instantiation do
+            @mock_session.request(URI.parse(path), env)
           end
 
-          status, headers, body = app.call(env)
           @request_count += 1
-
+          @request  = ActionDispatch::Request.new(env)
+          @response = ActionDispatch::TestResponse.from_response(@mock_session.last_response)
           @html_document = nil
 
-          @status = status.to_i
-          @status_message = ActionDispatch::StatusCodes::STATUS_CODES[@status]
-
-          @headers = Rack::Utils::HeaderHash.new(headers)
-
-          (@headers['Set-Cookie'] || "").split("\n").each do |cookie|
-            name, value = cookie.match(/^([^=]*)=([^;]*);/)[1,2]
-            @cookies[name] = value
-          end
-
-          if body.is_a?(String)
-            @body_parts = [body]
-            @body = body
-          else
-            @body_parts = []
-            body.each { |part| @body_parts << part.to_s }
-            @body = @body_parts.join
-          end
-
-          if @controller = ActionController::Base.last_instantiation
-            @request = @controller.request
-            @response = @controller.response
-            @controller.send(:set_test_assigns)
-          else
-            # Decorate responses from Rack Middleware and Rails Metal
-            # as an Response for the purposes of integration testing
-            @response = ActionDispatch::Response.new
-            @response.status = status.to_s
-            @response.headers.replace(@headers)
-            @response.body = @body_parts
-          end
-
-          # Decorate the response with the standard behavior of the
-          # TestResponse so that things like assert_response can be
-          # used in integration tests.
-          @response.extend(TestResponseBehavior)
-
-          return @status
-        rescue MultiPartNeededException
-          boundary = "----------XnJLe9ZIbbGUYtzPQJ16u1"
-          status = process(method, path,
-            multipart_body(parameters, boundary),
-            (headers || {}).merge(
-              {"CONTENT_TYPE" => "multipart/form-data; boundary=#{boundary}"}))
-          return status
-        end
-
-        # Encode the cookies hash in a format suitable for passing to a
-        # request.
-        def encode_cookies
-          cookies.inject("") do |string, (name, value)|
-            string << "#{name}=#{value}; "
-          end
+          return response.status
         end
 
         # Get a temporary URL writer object
@@ -389,97 +296,29 @@ module ActionController
           }
           UrlRewriter.new(ActionDispatch::Request.new(env), {})
         end
-
-        def name_with_prefix(prefix, name)
-          prefix ? "#{prefix}[#{name}]" : name.to_s
-        end
-
-        # Convert the given parameters to a request string. The parameters may
-        # be a string, +nil+, or a Hash.
-        def requestify(parameters, prefix=nil)
-          if TestUploadedFile === parameters
-            raise MultiPartNeededException
-          elsif Hash === parameters
-            return nil if parameters.empty?
-            parameters.map { |k,v|
-              requestify(v, name_with_prefix(prefix, k))
-            }.join("&")
-          elsif Array === parameters
-            parameters.map { |v|
-              requestify(v, name_with_prefix(prefix, ""))
-            }.join("&")
-          elsif prefix.nil?
-            parameters
-          else
-            "#{CGI.escape(prefix)}=#{CGI.escape(parameters.to_s)}"
-          end
-        end
-
-        def multipart_requestify(params, first=true)
-          returning Hash.new do |p|
-            params.each do |key, value|
-              k = first ? CGI.escape(key.to_s) : "[#{CGI.escape(key.to_s)}]"
-              if Hash === value
-                multipart_requestify(value, false).each do |subkey, subvalue|
-                  p[k + subkey] = subvalue
-                end
-              else
-                p[k] = value
-              end
-            end
-          end
-        end
-
-        def multipart_body(params, boundary)
-          multipart_requestify(params).map do |key, value|
-            if value.respond_to?(:original_filename)
-              File.open(value.path, "rb") do |f|
-                f.set_encoding(Encoding::BINARY) if f.respond_to?(:set_encoding)
-
-                <<-EOF
---#{boundary}\r
-Content-Disposition: form-data; name="#{key}"; filename="#{CGI.escape(value.original_filename)}"\r
-Content-Type: #{value.content_type}\r
-Content-Length: #{File.stat(value.path).size}\r
-\r
-#{f.read}\r
-EOF
-              end
-            else
-<<-EOF
---#{boundary}\r
-Content-Disposition: form-data; name="#{key}"\r
-\r
-#{value}\r
-EOF
-            end
-          end.join("")+"--#{boundary}--\r"
-        end
     end
 
     # A module used to extend ActionController::Base, so that integration tests
     # can capture the controller used to satisfy a request.
     module ControllerCapture #:nodoc:
-      def self.included(base)
-        base.extend(ClassMethods)
-        base.class_eval do
-          class << self
-            alias_method_chain :new, :capture
-          end
-        end
+      extend ActiveSupport::Concern
+
+      included do
+        alias_method_chain :initialize, :capture
+      end
+
+      def initialize_with_capture(*args)
+        initialize_without_capture
+        self.class.last_instantiation ||= self
       end
 
       module ClassMethods #:nodoc:
         mattr_accessor :last_instantiation
 
-        def clear_last_instantiation!
+        def capture_instantiation
           self.last_instantiation = nil
-        end
-
-        def new_with_capture(*args)
-          controller = new_without_capture(*args)
-          self.last_instantiation ||= controller
-          controller
+          yield
+          return last_instantiation
         end
       end
     end
@@ -513,8 +352,8 @@ EOF
       # By default, a single session is automatically created for you, but you
       # can use this method to open multiple sessions that ought to be tested
       # simultaneously.
-      def open_session(application = nil)
-        session = Integration::Session.new(application)
+      def open_session(app = nil)
+        session = Integration::Session.new(app)
 
         # delegate the fixture accessors back to the test instance
         extras = Module.new { attr_accessor :delegate, :test_result }
@@ -636,54 +475,5 @@ EOF
   #   end
   class IntegrationTest < ActiveSupport::TestCase
     include Integration::Runner
-
-    # Work around a bug in test/unit caused by the default test being named
-    # as a symbol (:default_test), which causes regex test filters
-    # (like "ruby test.rb -n /foo/") to fail because =~ doesn't work on
-    # symbols.
-    def initialize(name) #:nodoc:
-      super(name.to_s)
-    end
-
-    # Work around test/unit's requirement that every subclass of TestCase have
-    # at least one test method. Note that this implementation extends to all
-    # subclasses, as well, so subclasses of IntegrationTest may also exist
-    # without any test methods.
-    def run(*args) #:nodoc:
-      return if @method_name == "default_test"
-      super
-    end
-
-    # Because of how use_instantiated_fixtures and use_transactional_fixtures
-    # are defined, we need to treat them as special cases. Otherwise, users
-    # would potentially have to set their values for both Test::Unit::TestCase
-    # ActionController::IntegrationTest, since by the time the value is set on
-    # TestCase, IntegrationTest has already been defined and cannot inherit
-    # changes to those variables. So, we make those two attributes
-    # copy-on-write.
-
-    class << self
-      def use_transactional_fixtures=(flag) #:nodoc:
-        @_use_transactional_fixtures = true
-        @use_transactional_fixtures = flag
-      end
-
-      def use_instantiated_fixtures=(flag) #:nodoc:
-        @_use_instantiated_fixtures = true
-        @use_instantiated_fixtures = flag
-      end
-
-      def use_transactional_fixtures #:nodoc:
-        @_use_transactional_fixtures ?
-          @use_transactional_fixtures :
-          superclass.use_transactional_fixtures
-      end
-
-      def use_instantiated_fixtures #:nodoc:
-        @_use_instantiated_fixtures ?
-          @use_instantiated_fixtures :
-          superclass.use_instantiated_fixtures
-      end
-    end
   end
 end
diff --git a/actionpack/lib/action_controller/testing/process.rb b/actionpack/lib/action_controller/testing/process.rb
index 7e2857614c..9647f8ce45 100644
--- a/actionpack/lib/action_controller/testing/process.rb
+++ b/actionpack/lib/action_controller/testing/process.rb
@@ -1,94 +1,13 @@
 require 'rack/session/abstract/id'
-module ActionController #:nodoc:
-  class TestRequest < ActionDispatch::Request #:nodoc:
-    attr_accessor :cookies, :session_options
-    attr_accessor :query_parameters, :path, :session
-    attr_accessor :host
-
-    def self.new(env = {})
-      super
-    end
+require 'active_support/core_ext/object/conversions'
 
+module ActionController #:nodoc:
+  class TestRequest < ActionDispatch::TestRequest #:nodoc:
     def initialize(env = {})
-      super(Rack::MockRequest.env_for("/").merge(env))
-
-      @query_parameters   = {}
-      @session            = TestSession.new
-      default_rack_options = Rack::Session::Abstract::ID::DEFAULT_OPTIONS
-      @session_options    ||= {:id => generate_sid(default_rack_options[:sidbits])}.merge(default_rack_options)
-
-      initialize_default_values
-      initialize_containers
-    end
-
-    def reset_session
-      @session.reset
-    end
-
-    # Wraps raw_post in a StringIO.
-    def body_stream #:nodoc:
-      StringIO.new(raw_post)
-    end
-
-    # Either the RAW_POST_DATA environment variable or the URL-encoded request
-    # parameters.
-    def raw_post
-      @env['RAW_POST_DATA'] ||= begin
-        data = url_encoded_request_parameters
-        data.force_encoding(Encoding::BINARY) if data.respond_to?(:force_encoding)
-        data
-      end
-    end
-
-    def port=(number)
-      @env["SERVER_PORT"] = number.to_i
-    end
-
-    def action=(action_name)
-      @query_parameters.update({ "action" => action_name })
-      @parameters = nil
-    end
-
-    # Used to check AbstractRequest's request_uri functionality.
-    # Disables the use of @path and @request_uri so superclass can handle those.
-    def set_REQUEST_URI(value)
-      @env["REQUEST_URI"] = value
-      @request_uri = nil
-      @path = nil
-    end
-
-    def request_uri=(uri)
-      @request_uri = uri
-      @path = uri.split("?").first
-    end
-
-    def request_method=(method)
-      @request_method = method
-    end
-
-    def accept=(mime_types)
-      @env["HTTP_ACCEPT"] = Array(mime_types).collect { |mime_types| mime_types.to_s }.join(",")
-      @accepts = nil
-    end
-
-    def if_modified_since=(last_modified)
-      @env["HTTP_IF_MODIFIED_SINCE"] = last_modified
-    end
-
-    def if_none_match=(etag)
-      @env["HTTP_IF_NONE_MATCH"] = etag
-    end
-
-    def remote_addr=(addr)
-      @env['REMOTE_ADDR'] = addr
-    end
-
-    def request_uri(*args)
-      @request_uri || super()
-    end
+      super
 
-    def path(*args)
-      @path || super()
+      self.session = TestSession.new
+      self.session_options = TestSession::DEFAULT_OPTIONS.merge(:id => ActiveSupport::SecureRandom.hex(16))
     end
 
     def assign_parameters(controller_path, action, parameters)
@@ -108,247 +27,46 @@ module ActionController #:nodoc:
           path_parameters[key.to_s] = value
         end
       end
-      raw_post # populate env['RAW_POST_DATA']
-      @parameters = nil # reset TestRequest#parameters to use the new path_parameters
-    end
 
-    def recycle!
-      @env["action_controller.request.request_parameters"] = {}
-      self.query_parameters   = {}
-      self.path_parameters    = {}
-      @headers, @request_method, @accepts, @content_type = nil, nil, nil, nil
-    end
-
-    def user_agent=(user_agent)
-      @env['HTTP_USER_AGENT'] = user_agent
-    end
-
-    private
-      def generate_sid(sidbits)
-        "%0#{sidbits / 4}x" % rand(2**sidbits - 1)
-      end
-
-      def initialize_containers
-        @cookies = {}
-      end
-
-      def initialize_default_values
-        @host                    = "test.host"
-        @request_uri             = "/"
-        @env['HTTP_USER_AGENT']  = "Rails Testing"
-        @env['REMOTE_ADDR']      = "0.0.0.0"
-        @env["SERVER_PORT"]      = 80
-        @env['REQUEST_METHOD']   = "GET"
-      end
-
-      def url_encoded_request_parameters
-        params = self.request_parameters.dup
-
-        %w(controller action only_path).each do |k|
-          params.delete(k)
-          params.delete(k.to_sym)
-        end
+      params = self.request_parameters.dup
 
-        params.to_query
+      %w(controller action only_path).each do |k|
+        params.delete(k)
+        params.delete(k.to_sym)
       end
-  end
-
-  # A refactoring of TestResponse to allow the same behavior to be applied
-  # to the "real" CgiResponse class in integration tests.
-  module TestResponseBehavior #:nodoc:
-    # The response code of the request
-    def response_code
-      status.to_s[0,3].to_i rescue 0
-    end
-
-    # Returns a String to ensure compatibility with Net::HTTPResponse
-    def code
-      status.to_s.split(' ')[0]
-    end
-
-    def message
-      status.to_s.split(' ',2)[1]
-    end
-
-    # Was the response successful?
-    def success?
-      (200..299).include?(response_code)
-    end
 
-    # Was the URL not found?
-    def missing?
-      response_code == 404
+      data = params.to_query
+      @env['CONTENT_LENGTH'] = data.length.to_s
+      @env['rack.input'] = StringIO.new(data)
     end
 
-    # Were we redirected?
-    def redirect?
-      (300..399).include?(response_code)
-    end
-
-    # 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
-
-    # Returns the redirection location or nil
-    def redirect_url
-      headers['Location']
-    end
-
-    # Does the redirect location match this regexp pattern?
-    def redirect_url_match?( pattern )
-      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
-      template.instance_variable_get(:@_rendered)
-    end
-
-    # A shortcut to the flash. Returns an empty hash if no session flash exists.
-    def flash
-      session['flash'] || {}
-    end
-
-    # Do we have a flash?
-    def has_flash?
-      !flash.empty?
-    end
-
-    # Do we have a flash that has contents?
-    def has_flash_with_contents?
-      !flash.empty?
-    end
-
-    # Does the specified flash object exist?
-    def has_flash_object?(name=nil)
-      !flash[name].nil?
-    end
-
-    # Does the specified object exist in the session?
-    def has_session_object?(name=nil)
-      !session[name].nil?
-    end
-
-    # A shortcut to the template.assigns
-    def template_objects
-      template.assigns || {}
-    end
-
-    # Does the specified template object exist?
-    def has_template_object?(name=nil)
-      !template_objects[name].nil?
-    end
-
-    # Returns the response cookies, converted to a Hash of (name => value) pairs
-    #
-    #   assert_equal 'AuthorOfNewPage', r.cookies['author']
-    def cookies
-      cookies = {}
-      Array(headers['Set-Cookie']).each do |cookie|
-        key, value = cookie.split(";").first.split("=").map {|val| Rack::Utils.unescape(val)}
-        cookies[key] = value
-      end
-      cookies
-    end
-
-    # Returns binary content (downloadable file), converted to a String
-    def binary_content
-      raise "Response body is not a Proc: #{body_parts.inspect}" unless body_parts.kind_of?(Proc)
-      require 'stringio'
-
-      sio = StringIO.new
-      body_parts.call(self, sio)
-
-      sio.rewind
-      sio.read
-    end
-  end
-
-  # Integration test methods such as ActionController::Integration::Session#get
-  # and ActionController::Integration::Session#post return objects of class
-  # TestResponse, which represent the HTTP response results of the requested
-  # controller actions.
-  #
-  # See Response for more information on controller response objects.
-  class TestResponse < ActionDispatch::Response
-    include TestResponseBehavior
-
     def recycle!
-      body_parts.clear
-      headers.delete('ETag')
-      headers.delete('Last-Modified')
+      @formats = nil
+      @env.delete_if { |k, v| k =~ /^(action_dispatch|rack)\.request/ }
+      @env.delete_if { |k, v| k =~ /^action_dispatch\.rescue/ }
+      @env['action_dispatch.request.query_parameters'] = {}
     end
   end
 
-  class TestSession < Hash #:nodoc:
-    attr_accessor :session_id
-
-    def initialize(attributes = nil)
-      reset_session_id
-      replace_attributes(attributes)
-    end
-
-    def reset
-      reset_session_id
-      replace_attributes({ })
-    end
-
-    def data
-      to_hash
-    end
-
-    def [](key)
-      super(key.to_s)
-    end
-
-    def []=(key, value)
-      super(key.to_s, value)
-    end
-
-    def update(hash = nil)
-      if hash.nil?
-        ActiveSupport::Deprecation.warn('use replace instead', caller)
-        replace({})
-      else
-        super(hash)
-      end
-    end
-
-    def delete(key = nil)
-      if key.nil?
-        ActiveSupport::Deprecation.warn('use clear instead', caller)
-        clear
-      else
-        super(key.to_s)
-      end
-    end
+  class TestResponse < ActionDispatch::TestResponse
+    def recycle!
+      @status = 200
+      @header = Rack::Utils::HeaderHash.new(DEFAULT_HEADERS)
+      @writer = lambda { |x| @body << x }
+      @block = nil
+      @length = 0
+      @body = []
 
-    def close
-      ActiveSupport::Deprecation.warn('sessions should no longer be closed', caller)
+      @request = @template = nil
     end
+  end
 
-  private
-
-    def reset_session_id
-      @session_id = ''
-    end
+  class TestSession < ActionDispatch::Session::AbstractStore::SessionHash #:nodoc:
+    DEFAULT_OPTIONS = ActionDispatch::Session::AbstractStore::DEFAULT_OPTIONS
 
-    def replace_attributes(attributes = nil)
-      attributes ||= {}
-      replace(attributes.stringify_keys)
+    def initialize(session = {})
+      replace(session.stringify_keys)
+      @loaded = true
     end
   end
 
@@ -363,34 +81,7 @@ module ActionController #:nodoc:
   #
   # Pass a true third parameter to ensure the uploaded file is opened in binary mode (only required for Windows):
   #   post :change_avatar, :avatar => ActionController::TestUploadedFile.new(ActionController::TestCase.fixture_path + '/files/spongebob.png', 'image/png', :binary)
-  require 'tempfile'
-  class TestUploadedFile
-    # The filename, *not* including the path, of the "uploaded" file
-    attr_reader :original_filename
-
-    # The content type of the "uploaded" file
-    attr_accessor :content_type
-
-    def initialize(path, content_type = Mime::TEXT, binary = false)
-      raise "#{path} file does not exist" unless File.exist?(path)
-      @content_type = content_type
-      @original_filename = path.sub(/^.*#{File::SEPARATOR}([^#{File::SEPARATOR}]+)$/) { $1 }
-      @tempfile = Tempfile.new(@original_filename)
-      @tempfile.set_encoding(Encoding::BINARY) if @tempfile.respond_to?(:set_encoding)
-      @tempfile.binmode if binary
-      FileUtils.copy_file(path, @tempfile.path)
-    end
-
-    def path #:nodoc:
-      @tempfile.path
-    end
-
-    alias local_path path
-
-    def method_missing(method_name, *args, &block) #:nodoc:
-      @tempfile.__send__(method_name, *args, &block)
-    end
-  end
+  TestUploadedFile = Rack::Utils::Multipart::UploadedFile
 
   module TestProcess
     def self.included(base)
@@ -433,9 +124,7 @@ module ActionController #:nodoc:
       @response.recycle!
 
       @html_document = nil
-      @request.env['REQUEST_METHOD'] = http_method
-
-      @request.action = action.to_s
+      @request.request_method = http_method
 
       parameters ||= {}
       @request.assign_parameters(@controller.class.controller_path, action.to_s, parameters)
@@ -445,7 +134,19 @@ module ActionController #:nodoc:
       build_request_uri(action, parameters)
 
       Base.class_eval { include ProcessWithTest } unless Base < ProcessWithTest
-      @controller.process_with_test(@request, @response)
+
+      env = @request.env
+      app = @controller
+
+      # TODO: Enable Lint
+      # app = Rack::Lint.new(app)
+
+      status, headers, body = app.action(action, env)
+      response = Rack::MockResponse.new(status, headers, body)
+
+      @response.request, @response.template = @request, @controller.template
+      @response.status, @response.headers, @response.body = response.status, response.headers, response.body
+      @response
     end
 
     def xml_http_request(request_method, action, parameters = nil, session = nil, flash = nil)
@@ -459,11 +160,13 @@ module ActionController #:nodoc:
     alias xhr :xml_http_request
 
     def assigns(key = nil)
-      if key.nil?
-        @response.template.assigns
-      else
-        @response.template.assigns[key.to_s]
+      assigns = {}
+      @controller.instance_variable_names.each do |ivar|
+        next if ActionController::Base.protected_instance_variables.include?(ivar)
+        assigns[ivar[1..-1]] = @controller.instance_variable_get(ivar)
       end
+      
+      key.nil? ? assigns : assigns[key.to_s]
     end
 
     def session
@@ -471,7 +174,7 @@ module ActionController #:nodoc:
     end
 
     def flash
-      @response.flash
+      @request.flash
     end
 
     def cookies
@@ -488,7 +191,7 @@ module ActionController #:nodoc:
         options.update(:only_path => true, :action => action)
 
         url = ActionController::UrlRewriter.new(@request, parameters)
-        @request.set_REQUEST_URI(url.rewrite(options))
+        @request.request_uri = url.rewrite(options)
       end
     end
 
@@ -561,11 +264,14 @@ module ActionController #:nodoc:
 
   module ProcessWithTest #:nodoc:
     def self.included(base)
-      base.class_eval { attr_reader :assigns }
+      base.class_eval {
+        attr_reader :assigns
+        alias_method_chain :process, :test
+      }
     end
 
     def process_with_test(*args)
-      process(*args).tap { set_test_assigns }
+      process_without_test(*args).tap { set_test_assigns }
     end
 
     private
@@ -574,7 +280,7 @@ module ActionController #:nodoc:
         (instance_variable_names - self.class.protected_instance_variables).each do |var|
           name, value = var[1..-1], instance_variable_get(var)
           @assigns[name] = value
-          response.template.assigns[name] = value if response
+          @template.assigns[name] = value if response
         end
       end
   end
diff --git a/actionpack/lib/action_controller/testing/process2.rb b/actionpack/lib/action_controller/testing/process2.rb
new file mode 100644
index 0000000000..1c6fd2d80a
--- /dev/null
+++ b/actionpack/lib/action_controller/testing/process2.rb
@@ -0,0 +1,74 @@
+require "action_controller/testing/process"
+
+module ActionController
+  module TestProcess
+    
+    # Executes a request simulating GET HTTP method and set/volley the response
+    def get(action, parameters = nil, session = nil, flash = nil)
+      process(action, parameters, session, flash, "GET")
+    end
+
+    # Executes a request simulating POST HTTP method and set/volley the response
+    def post(action, parameters = nil, session = nil, flash = nil)
+      process(action, parameters, session, flash, "POST")
+    end
+
+    # Executes a request simulating PUT HTTP method and set/volley the response
+    def put(action, parameters = nil, session = nil, flash = nil)
+      process(action, parameters, session, flash, "PUT")
+    end
+
+    # Executes a request simulating DELETE HTTP method and set/volley the response
+    def delete(action, parameters = nil, session = nil, flash = nil)
+      process(action, parameters, session, flash, "DELETE")
+    end
+
+    # Executes a request simulating HEAD HTTP method and set/volley the response
+    def head(action, parameters = nil, session = nil, flash = nil)
+      process(action, parameters, session, flash, "HEAD")
+    end
+
+    def process(action, parameters = nil, session = nil, flash = nil, http_method = 'GET')
+      # Sanity check for required instance variables so we can give an
+      # understandable error message.
+      %w(@controller @request @response).each do |iv_name|
+        if !(instance_variable_names.include?(iv_name) || instance_variable_names.include?(iv_name.to_sym)) || instance_variable_get(iv_name).nil?
+          raise "#{iv_name} is nil: make sure you set it in your test's setup method."
+        end
+      end
+
+      @request.recycle!
+      @response.recycle!
+      @controller.response_body = nil
+      @controller.formats = nil
+      @controller.params = nil
+
+      @html_document = nil
+      @request.env['REQUEST_METHOD'] = http_method
+
+      parameters ||= {}
+      @request.assign_parameters(@controller.class.controller_path, action.to_s, parameters)
+
+      @request.session = ActionController::TestSession.new(session) unless session.nil?
+      @request.session["flash"] = ActionController::Flash::FlashHash.new.update(flash) if flash
+
+      @controller.request = @request
+      @controller.params.merge!(parameters)
+      build_request_uri(action, parameters)
+      # Base.class_eval { include ProcessWithTest } unless Base < ProcessWithTest
+      @controller.process_with_new_base_test(@request, @response)
+      @response
+    end
+    
+    def build_request_uri(action, parameters)
+      unless @request.env['REQUEST_URI']
+        options = @controller.__send__(:rewrite_options, parameters)
+        options.update(:only_path => true, :action => action)
+
+        url = ActionController::UrlRewriter.new(@request, parameters)
+        @request.request_uri = url.rewrite(options)
+      end
+    end      
+      
+  end
+end
\ No newline at end of file
diff --git a/actionpack/lib/action_controller/testing/test_case.rb b/actionpack/lib/action_controller/testing/test_case.rb
index b020b755a0..7b4eda58e5 100644
--- a/actionpack/lib/action_controller/testing/test_case.rb
+++ b/actionpack/lib/action_controller/testing/test_case.rb
@@ -105,20 +105,7 @@ module ActionController
   class TestCase < ActiveSupport::TestCase
     include TestProcess
 
-    module Assertions
-      %w(response selector tag dom routing model).each do |kind|
-        include ActionController::Assertions.const_get("#{kind.camelize}Assertions")
-      end
-
-      def clean_backtrace(&block)
-        yield
-      rescue ActiveSupport::TestCase::Assertion => error
-        framework_path = Regexp.new(File.expand_path("#{File.dirname(__FILE__)}/assertions"))
-        error.backtrace.reject! { |line| File.expand_path(line) =~ framework_path }
-        raise
-      end
-    end
-    include Assertions
+    include ActionDispatch::Assertions
 
     # When the request.remote_addr remains the default for testing, which is 0.0.0.0, the exception is simply raised inline
     # (bystepping the regular exception handling from rescue_action). If the request.remote_addr is anything else, the regular
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 ae20f9947c..a992f7d912 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
@@ -73,7 +73,7 @@ module HTML
     
     # 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 dt dd abbr 
+      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 
diff --git a/actionpack/lib/action_dispatch.rb b/actionpack/lib/action_dispatch.rb
index bd5a38cc82..884828a01a 100644
--- a/actionpack/lib/action_dispatch.rb
+++ b/actionpack/lib/action_dispatch.rb
@@ -21,35 +21,36 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #++
 
-begin
-  require 'active_support'
-rescue LoadError
-  activesupport_path = "#{File.dirname(__FILE__)}/../../activesupport/lib"
-  if File.directory?(activesupport_path)
-    $:.unshift activesupport_path
-    require 'active_support'
-  end
-end
+activesupport_path = "#{File.dirname(__FILE__)}/../../activesupport/lib"
+$:.unshift activesupport_path if File.directory?(activesupport_path)
+require 'active_support'
 
-$:.unshift "#{File.dirname(__FILE__)}/action_dispatch/vendor/rack-1.0"
 begin
-  gem 'rack', '~> 1.0.0'
-  require 'rack'
-rescue Gem::LoadError
-  require 'action_dispatch/vendor/rack-1.0/rack'
+  gem 'rack', '~> 1.1.pre'
+rescue Gem::LoadError, ArgumentError
+  $:.unshift "#{File.dirname(__FILE__)}/action_dispatch/vendor/rack-1.1.pre"
 end
 
+require 'rack'
+
+$:.unshift "#{File.dirname(__FILE__)}/action_dispatch/vendor/rack-test"
+
 module ActionDispatch
   autoload :Request, 'action_dispatch/http/request'
   autoload :Response, 'action_dispatch/http/response'
   autoload :StatusCodes, 'action_dispatch/http/status_codes'
 
-  autoload :Failsafe, 'action_dispatch/middleware/failsafe'
+  autoload :Callbacks, 'action_dispatch/middleware/callbacks'
   autoload :ParamsParser, 'action_dispatch/middleware/params_parser'
-  autoload :Reloader, 'action_dispatch/middleware/reloader'
-  autoload :RewindableInput, 'action_dispatch/middleware/rewindable_input'
+  autoload :Rescue, 'action_dispatch/middleware/rescue'
+  autoload :ShowExceptions, 'action_dispatch/middleware/show_exceptions'
   autoload :MiddlewareStack, 'action_dispatch/middleware/stack'
 
+  autoload :HTML, 'action_controller/vendor/html-scanner'
+  autoload :Assertions, 'action_dispatch/testing/assertions'
+  autoload :TestRequest, 'action_dispatch/testing/test_request'
+  autoload :TestResponse, 'action_dispatch/testing/test_response'
+
   module Http
     autoload :Headers, 'action_dispatch/http/headers'
   end
diff --git a/actionpack/lib/action_dispatch/http/mime_type.rb b/actionpack/lib/action_dispatch/http/mime_type.rb
index 02ad7f7d94..25156a4c75 100644
--- a/actionpack/lib/action_dispatch/http/mime_type.rb
+++ b/actionpack/lib/action_dispatch/http/mime_type.rb
@@ -1,8 +1,9 @@
 require 'set'
+require 'active_support/core_ext/class/attribute_accessors'
 
 module Mime
   SET              = []
-  EXTENSION_LOOKUP = Hash.new { |h, k| h[k] = Type.new(k) unless k.blank? }
+  EXTENSION_LOOKUP = {}
   LOOKUP           = Hash.new { |h, k| h[k] = Type.new(k) unless k.blank? }
 
   def self.[](type)
diff --git a/actionpack/lib/action_dispatch/http/mime_types.rb b/actionpack/lib/action_dispatch/http/mime_types.rb
index 2d7fba1173..7c28cac419 100644
--- a/actionpack/lib/action_dispatch/http/mime_types.rb
+++ b/actionpack/lib/action_dispatch/http/mime_types.rb
@@ -1,9 +1,9 @@
 # Build list of Mime types for HTTP responses
 # http://www.iana.org/assignments/media-types/
 
+Mime::Type.register "text/html", :html, %w( application/xhtml+xml ), %w( xhtml )
 Mime::Type.register "*/*", :all
 Mime::Type.register "text/plain", :text, [], %w(txt)
-Mime::Type.register "text/html", :html, %w( application/xhtml+xml ), %w( xhtml )
 Mime::Type.register "text/javascript", :js, %w( application/javascript application/x-javascript )
 Mime::Type.register "text/css", :css
 Mime::Type.register "text/calendar", :ics
diff --git a/actionpack/lib/action_dispatch/http/request.rb b/actionpack/lib/action_dispatch/http/request.rb
index 523ab32b35..140feb9a68 100755
--- a/actionpack/lib/action_dispatch/http/request.rb
+++ b/actionpack/lib/action_dispatch/http/request.rb
@@ -3,6 +3,9 @@ require 'stringio'
 require 'strscan'
 
 require 'active_support/memoizable'
+require 'active_support/core_ext/array/wrap'
+require 'active_support/core_ext/hash/indifferent_access'
+require 'active_support/core_ext/object/tap'
 
 module ActionDispatch
   class Request < Rack::Request
@@ -31,7 +34,7 @@ module ActionDispatch
     # <tt>:get</tt>. If the request \method is not listed in the HTTP_METHODS
     # constant above, an UnknownHttpMethod exception is raised.
     def request_method
-      @request_method ||= HTTP_METHOD_LOOKUP[super] || raise(ActionController::UnknownHttpMethod, "#{super}, accepted HTTP methods are #{HTTP_METHODS.to_sentence(:locale => :en)}")
+      HTTP_METHOD_LOOKUP[super] || raise(ActionController::UnknownHttpMethod, "#{super}, accepted HTTP methods are #{HTTP_METHODS.to_sentence(:locale => :en)}")
     end
 
     # Returns the HTTP request \method used for action processing as a
@@ -85,7 +88,7 @@ module ActionDispatch
     # For backward compatibility, the post \format is extracted from the
     # X-Post-Data-Format HTTP header if present.
     def content_type
-      @content_type ||= begin
+      @env["action_dispatch.request.content_type"] ||= begin
         if @env['CONTENT_TYPE'] =~ /^([^,\;]*)/
           Mime::Type.lookup($1.strip.downcase)
         else
@@ -93,10 +96,14 @@ module ActionDispatch
         end
       end
     end
-    
+
+    def media_type
+      content_type.to_s
+    end
+
     # Returns the accepted MIME type for the request.
     def accepts
-      @accepts ||= begin
+      @env["action_dispatch.request.accepts"] ||= begin
         header = @env['HTTP_ACCEPT'].to_s.strip
 
         fallback = xhr? ? Mime::JS : Mime::HTML
@@ -156,7 +163,7 @@ module ActionDispatch
     #   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>
 
     def format(view_path = [])
-      @format ||=
+      @env["action_dispatch.request.format"] ||=
         if parameters[:format]
                         Mime[parameters[:format]]
         elsif ActionController::Base.use_accept_header && !(accepts == ONLY_ALL)
@@ -167,12 +174,23 @@ module ActionDispatch
     end
 
     def formats
-      @formats = 
-        if ActionController::Base.use_accept_header
-          Array(Mime[parameters[:format]] || accepts)
+      if ActionController::Base.use_accept_header
+        if param = parameters[:format]
+          Array.wrap(Mime[param])
         else
-          [format]
+          accepts.dup
+        end.tap do |ret|
+          if defined?(ActionController::Http)
+            if ret == ONLY_ALL
+              ret.replace Mime::SET
+            elsif all = ret.index(Mime::ALL)
+              ret.delete_at(all) && ret.insert(all, *Mime::SET)
+            end
+          end
         end
+      else
+        [format] + Mime::SET
+      end
     end
 
     # Sets the \format by string extension, which can be used to force custom formats
@@ -188,7 +206,7 @@ module ActionDispatch
     #   end
     def format=(extension)
       parameters[:format] = extension.to_s
-      @format = Mime::Type.lookup_by_extension(parameters[:format])
+      @env["action_dispatch.request.format"] = Mime::Type.lookup_by_extension(parameters[:format])
     end
 
     # Returns a symbolized version of the <tt>:format</tt> parameter of the request.
@@ -324,6 +342,10 @@ EOM
       port == standard_port ? '' : ":#{port}"
     end
 
+    def server_port
+      @env['SERVER_PORT'].to_i
+    end
+
     # 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)
@@ -344,7 +366,7 @@ EOM
 
     # Returns the query string, accounting for server idiosyncrasies.
     def query_string
-      @env['QUERY_STRING'].present? ? @env['QUERY_STRING'] : (@env['REQUEST_URI'].split('?', 2)[1] || '')
+      @env['QUERY_STRING'].present? ? @env['QUERY_STRING'] : (@env['REQUEST_URI'].to_s.split('?', 2)[1] || '')
     end
 
     # Returns the request URI, accounting for server idiosyncrasies.
@@ -392,18 +414,19 @@ EOM
 
     # Returns both GET and POST \parameters in a single hash.
     def parameters
-      @parameters ||= request_parameters.merge(query_parameters).update(path_parameters).with_indifferent_access
+      @env["action_dispatch.request.parameters"] ||= request_parameters.merge(query_parameters).update(path_parameters).with_indifferent_access
     end
     alias_method :params, :parameters
 
     def path_parameters=(parameters) #:nodoc:
-      @env["rack.routing_args"] = parameters
-      @symbolized_path_parameters = @parameters = nil
+      @env.delete("action_dispatch.request.symbolized_path_parameters")
+      @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
-      @symbolized_path_parameters ||= path_parameters.symbolize_keys
+      @env["action_dispatch.request.symbolized_path_parameters"] ||= path_parameters.symbolize_keys
     end
 
     # Returns a hash with the \parameters used to form the \path of the request.
@@ -413,7 +436,7 @@ EOM
     #
     # See <tt>symbolized_path_parameters</tt> for symbolized keys.
     def path_parameters
-      @env["rack.routing_args"] ||= {}
+      @env["action_dispatch.request.path_parameters"] ||= {}
     end
 
     # The request body is an IO input stream. If the RAW_POST_DATA environment
@@ -433,13 +456,13 @@ EOM
 
     # Override Rack's GET method to support indifferent access
     def GET
-      @env["action_controller.request.query_parameters"] ||= normalize_parameters(super)
+      @env["action_dispatch.request.query_parameters"] ||= normalize_parameters(super)
     end
     alias_method :query_parameters, :GET
 
     # Override Rack's POST method to support indifferent access
     def POST
-      @env["action_controller.request.request_parameters"] ||= normalize_parameters(super)
+      @env["action_dispatch.request.request_parameters"] ||= normalize_parameters(super)
     end
     alias_method :request_parameters, :POST
 
@@ -447,29 +470,21 @@ EOM
       @env['rack.input']
     end
 
-    def session
-      @env['rack.session'] ||= {}
+    def reset_session
+      self.session_options.delete(:id)
+      self.session = {}
     end
 
     def session=(session) #:nodoc:
       @env['rack.session'] = session
     end
 
-    def reset_session
-      @env['rack.session.options'].delete(:id)
-      @env['rack.session'] = {}
-    end
-
-    def session_options
-      @env['rack.session.options'] ||= {}
-    end
-
     def session_options=(options)
       @env['rack.session.options'] = options
     end
 
-    def server_port
-      @env['SERVER_PORT'].to_i
+    def flash
+      session['flash'] || {}
     end
 
     private
diff --git a/actionpack/lib/action_dispatch/http/response.rb b/actionpack/lib/action_dispatch/http/response.rb
index ecf40b8103..b9db7a4508 100644
--- a/actionpack/lib/action_dispatch/http/response.rb
+++ b/actionpack/lib/action_dispatch/http/response.rb
@@ -1,4 +1,5 @@
 require 'digest/md5'
+require 'active_support/core_ext/module/delegation'
 
 module ActionDispatch # :nodoc:
   # Represents an HTTP response generated by a controller action. One can use
@@ -34,17 +35,31 @@ module ActionDispatch # :nodoc:
     DEFAULT_HEADERS = { "Cache-Control" => "no-cache" }
     attr_accessor :request
 
-    attr_accessor :session, :assigns, :template, :layout
-    attr_accessor :redirected_to, :redirected_to_method_params
+    attr_writer :header
+    alias_method :headers=, :header=
 
     delegate :default_charset, :to => 'ActionController::Base'
 
     def initialize
       super
       @header = Rack::Utils::HeaderHash.new(DEFAULT_HEADERS)
-      @session, @assigns = [], []
     end
 
+    # The response code of the request
+    def response_code
+      status.to_s[0,3].to_i rescue 0
+    end
+
+    # Returns a String to ensure compatibility with Net::HTTPResponse
+    def code
+      status.to_s.split(' ')[0]
+    end
+
+    def message
+      status.to_s.split(' ',2)[1] || StatusCodes::STATUS_CODES[response_code]
+    end
+    alias_method :status_message, :message
+
     def body
       str = ''
       each { |part| str << part.to_s }
@@ -53,7 +68,7 @@ module ActionDispatch # :nodoc:
 
     def body=(body)
       @body =
-        if body.is_a?(String)
+        if body.respond_to?(:to_str)
           [body]
         else
           body
@@ -64,9 +79,14 @@ module ActionDispatch # :nodoc:
       @body
     end
 
-    def location; headers['Location'] end
-    def location=(url) headers['Location'] = url end
+    def location
+      headers['Location']
+    end
+    alias_method :redirect_url, :location
 
+    def location=(url)
+      headers['Location'] = url
+    end
 
     # Sets the HTTP response's content MIME type. For example, in the controller
     # you could write this:
@@ -137,19 +157,20 @@ module ActionDispatch # :nodoc:
       end
     end
 
-    def redirect(url, status)
-      self.status = status
-      self.location = url.gsub(/[\r\n]/, '')
-      self.body = "<html><body>You are being <a href=\"#{CGI.escapeHTML(url)}\">redirected</a>.</body></html>"
-    end
-
     def sending_file?
       headers["Content-Transfer-Encoding"] == "binary"
     end
 
     def assign_default_content_type_and_charset!
-      self.content_type ||= Mime::HTML
-      self.charset ||= default_charset unless sending_file?
+      if type = headers['Content-Type'] || headers['type']
+        unless type =~ /charset=/ || sending_file?
+          headers['Content-Type'] = "#{type}; charset=#{default_charset}"
+        end
+      else
+        type = Mime::HTML.to_s
+        type += "; charset=#{default_charset}" unless sending_file?
+        headers['Content-Type'] = type
+      end
     end
 
     def prepare!
@@ -165,10 +186,8 @@ module ActionDispatch # :nodoc:
       if @body.respond_to?(:call)
         @writer = lambda { |x| callback.call(x) }
         @body.call(self, self)
-      elsif @body.is_a?(String)
-        callback.call(@body)
       else
-        @body.each(&callback)
+        @body.each { |part| callback.call(part.to_s) }
       end
 
       @writer = callback
@@ -192,6 +211,23 @@ module ActionDispatch # :nodoc:
       super(key, value)
     end
 
+    # Returns the response cookies, converted to a Hash of (name => value) pairs
+    #
+    #   assert_equal 'AuthorOfNewPage', r.cookies['author']
+    def cookies
+      cookies = {}
+      if header = headers['Set-Cookie']
+        header = header.split("\n") if header.respond_to?(:to_str)
+        header.each do |cookie|
+          if pair = cookie.split(';').first
+            key, value = pair.split("=").map { |v| Rack::Utils.unescape(v) }
+            cookies[key] = value
+          end
+        end
+      end
+      cookies
+    end
+
     private
       def handle_conditional_get!
         if etag? || last_modified?
@@ -245,7 +281,13 @@ module ActionDispatch # :nodoc:
       end
 
       def convert_cookies!
-        headers['Set-Cookie'] = Array(headers['Set-Cookie']).compact
+        headers['Set-Cookie'] =
+          if header = headers['Set-Cookie']
+            header = header.split("\n") if header.respond_to?(:to_str)
+            header.compact
+          else
+            []
+          end
       end
   end
 end
diff --git a/actionpack/lib/action_dispatch/http/status_codes.rb b/actionpack/lib/action_dispatch/http/status_codes.rb
index 830de2a6db..5bac842ec1 100644
--- a/actionpack/lib/action_dispatch/http/status_codes.rb
+++ b/actionpack/lib/action_dispatch/http/status_codes.rb
@@ -1,3 +1,5 @@
+require 'active_support/inflector'
+
 module ActionDispatch
   module StatusCodes #:nodoc:
     STATUS_CODES = Rack::Utils::HTTP_STATUS_CODES.merge({
@@ -16,7 +18,7 @@ module ActionDispatch
     # :created or :not_implemented) into its corresponding HTTP status
     # code (like 200 or 501).
     SYMBOL_TO_STATUS_CODE = STATUS_CODES.inject({}) { |hash, (code, message)|
-      hash[message.gsub(/ /, "").underscore.to_sym] = code
+      hash[ActiveSupport::Inflector.underscore(message.gsub(/ /, "")).to_sym] = code
       hash
     }.freeze
 
@@ -37,4 +39,4 @@ module ActionDispatch
         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
new file mode 100644
index 0000000000..0a2b4cf5f7
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/callbacks.rb
@@ -0,0 +1,40 @@
+module ActionDispatch
+  class Callbacks
+    include ActiveSupport::Callbacks
+    define_callbacks :prepare, :before, :after
+
+    class << self
+      # DEPRECATED
+      alias_method :prepare_dispatch, :prepare
+      alias_method :before_dispatch, :before
+      alias_method :after_dispatch, :after
+    end
+
+    # Add a preparation callback. Preparation callbacks are run before every
+    # request in development mode, and before the first request in production
+    # mode.
+    #
+    # An optional identifier may be supplied for the callback. If provided,
+    # to_prepare may 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(identifier = nil, &block)
+      @prepare_callbacks ||= ActiveSupport::Callbacks::CallbackChain.new
+      callback = ActiveSupport::Callbacks::Callback.new(:prepare, block, :identifier => identifier)
+      @prepare_callbacks.replace_or_append!(callback)
+    end
+
+    def initialize(app, prepare_each_request = false)
+      @app, @prepare_each_request = app, prepare_each_request
+      run_callbacks :prepare
+    end
+
+    def call(env)
+      run_callbacks :before
+      run_callbacks :prepare if @prepare_each_request
+      @app.call(env)
+    ensure
+      run_callbacks :after, :enumerator => :reverse_each
+    end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/middleware/failsafe.rb b/actionpack/lib/action_dispatch/middleware/failsafe.rb
deleted file mode 100644
index 7379a696aa..0000000000
--- a/actionpack/lib/action_dispatch/middleware/failsafe.rb
+++ /dev/null
@@ -1,52 +0,0 @@
-module ActionDispatch
-  class Failsafe
-    cattr_accessor :error_file_path
-    self.error_file_path = Rails.public_path if defined?(Rails.public_path)
-
-    def initialize(app)
-      @app = app
-    end
-
-    def call(env)
-      @app.call(env)
-    rescue Exception => exception
-      # Reraise exception in test environment
-      if env["rack.test"]
-        raise exception
-      else
-        failsafe_response(exception)
-      end
-    end
-
-    private
-      def failsafe_response(exception)
-        log_failsafe_exception(exception)
-        [500, {'Content-Type' => 'text/html'}, failsafe_response_body]
-      rescue Exception => failsafe_error # Logger or IO errors
-        $stderr.puts "Error during failsafe response: #{failsafe_error}"
-      end
-
-      def failsafe_response_body
-        error_path = "#{self.class.error_file_path}/500.html"
-        if File.exist?(error_path)
-          File.read(error_path)
-        else
-          "<html><body><h1>500 Internal Server Error</h1></body></html>"
-        end
-      end
-
-      def log_failsafe_exception(exception)
-        message = "/!\\ FAILSAFE /!\\  #{Time.now}\n  Status: 500 Internal Server Error\n"
-        message << "  #{exception}\n    #{exception.backtrace.join("\n    ")}" if exception
-        failsafe_logger.fatal(message)
-      end
-
-      def failsafe_logger
-        if defined?(Rails) && Rails.logger
-          Rails.logger
-        else
-          Logger.new($stderr)
-        end
-      end
-  end
-end
diff --git a/actionpack/lib/action_dispatch/middleware/params_parser.rb b/actionpack/lib/action_dispatch/middleware/params_parser.rb
index 6df572268c..e83cf9236b 100644
--- a/actionpack/lib/action_dispatch/middleware/params_parser.rb
+++ b/actionpack/lib/action_dispatch/middleware/params_parser.rb
@@ -1,3 +1,5 @@
+require 'active_support/json'
+
 module ActionDispatch
   class ParamsParser
     ActionController::Base.param_parsers[Mime::XML] = :xml_simple
@@ -9,7 +11,7 @@ module ActionDispatch
 
     def call(env)
       if params = parse_formatted_parameters(env)
-        env["action_controller.request.request_parameters"] = params
+        env["action_dispatch.request.request_parameters"] = params
       end
 
       @app.call(env)
@@ -30,16 +32,14 @@ module ActionDispatch
           when Proc
             strategy.call(request.raw_post)
           when :xml_simple, :xml_node
-            body = request.raw_post
-            body.blank? ? {} : Hash.from_xml(body).with_indifferent_access
+            request.body.size == 0 ? {} : Hash.from_xml(request.body).with_indifferent_access
           when :yaml
-            YAML.load(request.raw_post)
+            YAML.load(request.body)
           when :json
-            body = request.raw_post
-            if body.blank?
+            if request.body.size == 0
               {}
             else
-              data = ActiveSupport::JSON.decode(body)
+              data = ActiveSupport::JSON.decode(request.body)
               data = {:_json => data} unless data.is_a?(Hash)
               data.with_indifferent_access
             end
diff --git a/actionpack/lib/action_dispatch/middleware/reloader.rb b/actionpack/lib/action_dispatch/middleware/reloader.rb
deleted file mode 100644
index 67313e30e4..0000000000
--- a/actionpack/lib/action_dispatch/middleware/reloader.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-module ActionDispatch
-  class Reloader
-    def initialize(app)
-      @app = app
-    end
-
-    def call(env)
-      ActionController::Dispatcher.reload_application
-      @app.call(env)
-    ensure
-      ActionController::Dispatcher.cleanup_application
-    end
-  end
-end
diff --git a/actionpack/lib/action_dispatch/middleware/rescue.rb b/actionpack/lib/action_dispatch/middleware/rescue.rb
new file mode 100644
index 0000000000..1456825526
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/rescue.rb
@@ -0,0 +1,14 @@
+module ActionDispatch
+  class Rescue
+    def initialize(app, rescuer)
+      @app, @rescuer = app, rescuer
+    end
+
+    def call(env)
+      @app.call(env)
+    rescue Exception => exception
+      env['action_dispatch.rescue.exception'] = exception
+      @rescuer.call(env)
+    end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/middleware/rewindable_input.rb b/actionpack/lib/action_dispatch/middleware/rewindable_input.rb
deleted file mode 100644
index c818f28cce..0000000000
--- a/actionpack/lib/action_dispatch/middleware/rewindable_input.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-module ActionDispatch
-  class RewindableInput
-    def initialize(app)
-      @app = app
-    end
-
-    def call(env)
-      begin
-        env['rack.input'].rewind
-      rescue NoMethodError, Errno::ESPIPE
-        # Handles exceptions raised by input streams that cannot be rewound
-        # such as when using plain CGI under Apache
-        env['rack.input'] = StringIO.new(env['rack.input'].read)
-      end
-
-      @app.call(env)
-    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 6c039cf62d..6d109f4624 100644
--- a/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
@@ -15,6 +15,7 @@ module ActionDispatch
           @by = by
           @env = env
           @loaded = false
+          @updated = false
         end
 
         def session_id
@@ -26,12 +27,13 @@ module ActionDispatch
 
         def [](key)
           load! unless @loaded
-          super
+          super(key.to_s)
         end
 
         def []=(key, value)
           load! unless @loaded
-          super
+          super(key.to_s, value)
+          @updated = true
         end
 
         def to_hash
@@ -40,6 +42,24 @@ module ActionDispatch
           h
         end
 
+        def update(hash = nil)
+          if hash.nil?
+            ActiveSupport::Deprecation.warn('use replace instead', caller)
+            replace({})
+          else
+            super(hash.stringify_keys)
+          end
+        end
+
+        def delete(key = nil)
+          if key.nil?
+            ActiveSupport::Deprecation.warn('use clear instead', caller)
+            clear
+          else
+            super(key.to_s)
+          end
+        end
+
         def data
          ActiveSupport::Deprecation.warn(
            "ActionController::Session::AbstractStore::SessionHash#data " +
@@ -47,6 +67,10 @@ module ActionDispatch
           to_hash
         end
 
+        def close
+          ActiveSupport::Deprecation.warn('sessions should no longer be closed', caller)
+        end
+
         def inspect
           load! unless @loaded
           super
@@ -57,11 +81,15 @@ module ActionDispatch
             @loaded
           end
 
+          def updated?
+            @updated
+          end
+
           def load!
             stale_session_check! do
               id, session = @by.send(:load_session, @env)
               (@env[ENV_SESSION_OPTIONS_KEY] ||= {})[:id] = id
-              replace(session)
+              replace(session.stringify_keys)
               @loaded = true
             end
           end
@@ -74,7 +102,7 @@ module ActionDispatch
                 # Note that the regexp does not allow $1 to end with a ':'
                 $1.constantize
               rescue LoadError, NameError => const_error
-                raise ActionController::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"
+                raise ActionController::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
@@ -125,7 +153,10 @@ module ActionDispatch
         options = env[ENV_SESSION_OPTIONS_KEY]
 
         if !session_data.is_a?(AbstractStore::SessionHash) || session_data.send(:loaded?) || options[:expire_after]
-          session_data.send(:load!) if session_data.is_a?(AbstractStore::SessionHash) && !session_data.send(:loaded?)
+          if session_data.is_a?(AbstractStore::SessionHash)
+            session_data.send(:load!) if !session_data.send(:loaded?)
+            return response if !session_data.send(:updated?)
+          end
 
           sid = options[:id] || generate_sid
 
diff --git a/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb b/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
index 433c4cc070..547a2d2062 100644
--- a/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
@@ -143,7 +143,8 @@ module ActionDispatch
           request = Rack::Request.new(env)
           session_data = request.cookies[@key]
           data = unmarshal(session_data) || persistent_session_id!({})
-          [data[:session_id], data]
+          data.stringify_keys!
+          [data["session_id"], data]
         end
 
         # Marshal a session hash into safe cookie data. Include an integrity hash.
@@ -206,12 +207,12 @@ module ActionDispatch
         end
 
         def inject_persistent_session_id(data)
-          requires_session_id?(data) ? { :session_id => generate_sid } : {}
+          requires_session_id?(data) ? { "session_id" => generate_sid } : {}
         end
 
         def requires_session_id?(data)
           if data
-            data.respond_to?(:key?) && !data.key?(:session_id)
+            data.respond_to?(:key?) && !data.key?("session_id")
           else
             true
           end
diff --git a/actionpack/lib/action_dispatch/middleware/show_exceptions.rb b/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
new file mode 100644
index 0000000000..bfff307669
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
@@ -0,0 +1,141 @@
+module ActionDispatch
+  class ShowExceptions
+    include StatusCodes
+
+    LOCALHOST = '127.0.0.1'.freeze
+
+    RESCUES_TEMPLATE_PATH = File.join(File.dirname(__FILE__), 'templates')
+
+    cattr_accessor :rescue_responses
+    @@rescue_responses = Hash.new(:internal_server_error)
+    @@rescue_responses.update({
+      'ActionController::RoutingError'             => :not_found,
+      # TODO: Clean this up after the switch
+      ActionController::UnknownAction.name         => :not_found,
+      'ActiveRecord::RecordNotFound'               => :not_found,
+      'ActiveRecord::StaleObjectError'             => :conflict,
+      'ActiveRecord::RecordInvalid'                => :unprocessable_entity,
+      'ActiveRecord::RecordNotSaved'               => :unprocessable_entity,
+      'ActionController::MethodNotAllowed'         => :method_not_allowed,
+      'ActionController::NotImplemented'           => :not_implemented,
+      'ActionController::InvalidAuthenticityToken' => :unprocessable_entity
+    })
+
+    cattr_accessor :rescue_templates
+    @@rescue_templates = Hash.new('diagnostics')
+    @@rescue_templates.update({
+      'ActionView::MissingTemplate'         => 'missing_template',
+      'ActionController::RoutingError'      => 'routing_error',
+      ActionController::UnknownAction.name  => 'unknown_action',
+      'ActionView::TemplateError'           => 'template_error'
+    })
+
+    FAILSAFE_RESPONSE = [500, {'Content-Type' => 'text/html'},
+      ["<html><body><h1>500 Internal Server Error</h1>" <<
+       "If you are the administrator of this website, then please read this web " <<
+       "application's log file and/or the web server's log file to find out what " <<
+       "went wrong.</body></html>"]]
+
+    def initialize(app, consider_all_requests_local = false)
+      @app = app
+      @consider_all_requests_local = consider_all_requests_local
+    end
+
+    def call(env)
+      @app.call(env)
+    rescue Exception => exception
+      raise exception if env['action_dispatch.show_exceptions'] == false
+      render_exception(env, exception)
+    end
+
+    private
+      def render_exception(env, exception)
+        log_error(exception)
+
+        request = Request.new(env)
+        if @consider_all_requests_local || local_request?(request)
+          rescue_action_locally(request, exception)
+        else
+          rescue_action_in_public(exception)
+        end
+      rescue Exception => failsafe_error
+        $stderr.puts "Error during failsafe response: #{failsafe_error}"
+        FAILSAFE_RESPONSE
+      end
+
+      # Render detailed diagnostics for unhandled exceptions rescued from
+      # a controller action.
+      def rescue_action_locally(request, exception)
+        template = ActionView::Base.new([RESCUES_TEMPLATE_PATH],
+          :request => request,
+          :exception => exception
+        )
+        file = "rescues/#{@@rescue_templates[exception.class.name]}.erb"
+        body = template.render(:file => file, :layout => 'rescues/layout.erb')
+        render(status_code(exception), body)
+      end
+
+      # Attempts to render a static error page based on the
+      # <tt>status_code</tt> thrown, or just return headers if no such file
+      # exists. At first, it will try to render a localized static page.
+      # For example, if a 500 error is being handled Rails and locale is :da,
+      # it will first attempt to render the file at <tt>public/500.da.html</tt>
+      # then attempt to render <tt>public/500.html</tt>. If none of them exist,
+      # the body of the response will be left empty.
+      def rescue_action_in_public(exception)
+        status = status_code(exception)
+        locale_path = "#{public_path}/#{status}.#{I18n.locale}.html" if I18n.locale
+        path = "#{public_path}/#{status}.html"
+
+        if locale_path && File.exist?(locale_path)
+          render(status, File.read(locale_path))
+        elsif File.exist?(path)
+          render(status, File.read(path))
+        else
+          render(status, '')
+        end
+      end
+
+      # True if the request came from localhost, 127.0.0.1.
+      def local_request?(request)
+        request.remote_addr == LOCALHOST && request.remote_ip == LOCALHOST
+      end
+
+      def status_code(exception)
+        interpret_status(@@rescue_responses[exception.class.name]).to_i
+      end
+
+      def render(status, body)
+        [status, {'Content-Type' => 'text/html', 'Content-Length' => body.length.to_s}, [body]]
+      end
+
+      def public_path
+        defined?(Rails.public_path) ? Rails.public_path : 'public_path'
+      end
+
+      def log_error(exception)
+        return unless logger
+
+        ActiveSupport::Deprecation.silence do
+          if ActionView::TemplateError === exception
+            logger.fatal(exception.to_s)
+          else
+            logger.fatal(
+              "\n#{exception.class} (#{exception.message}):\n  " +
+              clean_backtrace(exception).join("\n  ") + "\n\n"
+            )
+          end
+        end
+      end
+
+      def clean_backtrace(exception)
+        defined?(Rails) && Rails.respond_to?(:backtrace_cleaner) ?
+          Rails.backtrace_cleaner.clean(exception.backtrace) :
+          exception.backtrace
+      end
+
+      def logger
+        defined?(Rails.logger) ? Rails.logger : Logger.new($stderr)
+      end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/middleware/stack.rb b/actionpack/lib/action_dispatch/middleware/stack.rb
index ee5f28d5cb..ade2d6f05e 100644
--- a/actionpack/lib/action_dispatch/middleware/stack.rb
+++ b/actionpack/lib/action_dispatch/middleware/stack.rb
@@ -34,8 +34,6 @@ module ActionDispatch
         else
           @klass.to_s.constantize
         end
-      rescue NameError
-        @klass
       end
 
       def active?
@@ -61,7 +59,7 @@ module ActionDispatch
 
       def inspect
         str = klass.to_s
-        args.each { |arg| str += ", #{arg.inspect}" }
+        args.each { |arg| str += ", #{build_args.inspect}" }
         str
       end
 
@@ -74,7 +72,6 @@ module ActionDispatch
       end
 
       private
-
         def build_args
           Array(args).map { |arg| arg.respond_to?(:call) ? arg.call : arg }
         end
diff --git a/actionpack/lib/action_controller/dispatch/templates/rescues/_request_and_response.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb
index 64b34650b1..5224403dab 100644
--- a/actionpack/lib/action_controller/dispatch/templates/rescues/_request_and_response.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb
@@ -6,7 +6,7 @@
 <% end %>
 
 <%
-  clean_params = request.parameters.clone
+  clean_params = @request.parameters.clone
   clean_params.delete("action")
   clean_params.delete("controller")
 
@@ -17,8 +17,8 @@
 <p><b>Parameters</b>: <pre><%=h request_dump %></pre></p>
 
 <p><a href="#" onclick="document.getElementById('session_dump').style.display='block'; return false;">Show session dump</a></p>
-<div id="session_dump" style="display:none"><%= debug(request.session.instance_variable_get("@data")) %></div>
+<div id="session_dump" style="display:none"><%= debug(@request.session.instance_variable_get("@data")) %></div>
 
 
 <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 @response ? @response.headers.inspect.gsub(',', ",\n") : 'None' %></pre></p>
diff --git a/actionpack/lib/action_controller/dispatch/templates/rescues/_trace.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb
index bb2d8375bd..bb2d8375bd 100644
--- a/actionpack/lib/action_controller/dispatch/templates/rescues/_trace.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
new file mode 100644
index 0000000000..693e56270a
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
@@ -0,0 +1,10 @@
+<h1>
+  <%=h @exception.class.to_s %>
+  <% if @request.parameters['controller'] %>
+    in <%=h @request.parameters['controller'].humanize %>Controller<% if @request.parameters['action'] %>#<%=h @request.parameters['action'] %><% end %>
+  <% end %>
+</h1>
+<pre><%=h @exception.clean_message %></pre>
+
+<%= render :file => "rescues/_trace.erb" %>
+<%= render :file => "rescues/_request_and_response.erb" %>
diff --git a/actionpack/lib/action_controller/dispatch/templates/rescues/layout.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/layout.erb
index 4a04742e40..6c32fb17b8 100644
--- a/actionpack/lib/action_controller/dispatch/templates/rescues/layout.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/layout.erb
@@ -23,7 +23,7 @@
 </head>
 <body>
 
-<%= @contents %>
+<%= yield %>
 
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/actionpack/lib/action_controller/dispatch/templates/rescues/missing_template.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.erb
index dbfdf76947..dbfdf76947 100644
--- a/actionpack/lib/action_controller/dispatch/templates/rescues/missing_template.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.erb
diff --git a/actionpack/lib/action_controller/dispatch/templates/rescues/routing_error.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.erb
index ccfa858cce..ccfa858cce 100644
--- a/actionpack/lib/action_controller/dispatch/templates/rescues/routing_error.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.erb
diff --git a/actionpack/lib/action_controller/dispatch/templates/rescues/template_error.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.erb
index 2e34e03bd5..02fa18211d 100644
--- a/actionpack/lib/action_controller/dispatch/templates/rescues/template_error.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.erb
@@ -1,6 +1,6 @@
 <h1>
   <%=h @exception.original_exception.class.to_s %> in
-  <%=h request.parameters["controller"].capitalize if request.parameters["controller"]%>#<%=h request.parameters["action"] %>
+  <%=h @request.parameters["controller"].capitalize if @request.parameters["controller"]%>#<%=h @request.parameters["action"] %>
 </h1>
 
 <p>
@@ -15,7 +15,7 @@
 
 <% @real_exception = @exception
    @exception = @exception.original_exception || @exception %>
-<%= render :file => @rescues_path["rescues/_trace.erb"] %>
+<%= render :file => "rescues/_trace.erb" %>
 <% @exception = @real_exception %>
 
-<%= render :file => @rescues_path["rescues/_request_and_response.erb"] %>
+<%= render :file => "rescues/_request_and_response.erb" %>
diff --git a/actionpack/lib/action_controller/dispatch/templates/rescues/unknown_action.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.erb
index 683379da10..683379da10 100644
--- a/actionpack/lib/action_controller/dispatch/templates/rescues/unknown_action.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.erb
diff --git a/actionpack/lib/action_dispatch/testing/assertions.rb b/actionpack/lib/action_dispatch/testing/assertions.rb
new file mode 100644
index 0000000000..96f08f2355
--- /dev/null
+++ b/actionpack/lib/action_dispatch/testing/assertions.rb
@@ -0,0 +1,8 @@
+module ActionDispatch
+  module Assertions
+    %w(response selector tag dom routing model).each do |kind|
+      require "action_dispatch/testing/assertions/#{kind}"
+      include const_get("#{kind.camelize}Assertions")
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/testing/assertions/dom.rb b/actionpack/lib/action_dispatch/testing/assertions/dom.rb
index 5ffe5f1883..9a917f704a 100644
--- a/actionpack/lib/action_controller/testing/assertions/dom.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/dom.rb
@@ -1,4 +1,4 @@
-module ActionController
+module ActionDispatch
   module Assertions
     module DomAssertions
       # Test two HTML strings for equivalency (e.g., identical up to reordering of attributes)
@@ -9,13 +9,11 @@ module ActionController
       #   assert_dom_equal '<a href="http://www.example.com">Apples</a>', link_to("Apples", "http://www.example.com")
       #
       def assert_dom_equal(expected, actual, message = "")
-        clean_backtrace do
-          expected_dom = HTML::Document.new(expected).root
-          actual_dom   = HTML::Document.new(actual).root
-          full_message = build_message(message, "<?> expected to be == to\n<?>.", expected_dom.to_s, actual_dom.to_s)
+        expected_dom = HTML::Document.new(expected).root
+        actual_dom   = HTML::Document.new(actual).root
+        full_message = build_message(message, "<?> expected to be == to\n<?>.", expected_dom.to_s, actual_dom.to_s)
 
-          assert_block(full_message) { expected_dom == actual_dom }
-        end
+        assert_block(full_message) { expected_dom == actual_dom }
       end
       
       # The negated form of +assert_dom_equivalent+.
@@ -26,13 +24,11 @@ module ActionController
       #   assert_dom_not_equal '<a href="http://www.example.com">Apples</a>', link_to("Oranges", "http://www.example.com")
       #
       def assert_dom_not_equal(expected, actual, message = "")
-        clean_backtrace do
-          expected_dom = HTML::Document.new(expected).root
-          actual_dom   = HTML::Document.new(actual).root
-          full_message = build_message(message, "<?> expected to be != to\n<?>.", expected_dom.to_s, actual_dom.to_s)
+        expected_dom = HTML::Document.new(expected).root
+        actual_dom   = HTML::Document.new(actual).root
+        full_message = build_message(message, "<?> expected to be != to\n<?>.", expected_dom.to_s, actual_dom.to_s)
 
-          assert_block(full_message) { expected_dom != actual_dom }
-        end
+        assert_block(full_message) { expected_dom != actual_dom }
       end
     end
   end
diff --git a/actionpack/lib/action_controller/testing/assertions/model.rb b/actionpack/lib/action_dispatch/testing/assertions/model.rb
index 3a7b39b106..46714418c6 100644
--- a/actionpack/lib/action_controller/testing/assertions/model.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/model.rb
@@ -1,4 +1,4 @@
-module ActionController
+module ActionDispatch
   module Assertions
     module ModelAssertions
       # Ensures that the passed record is valid by Active Record standards and
@@ -12,9 +12,7 @@ module ActionController
       #
       def assert_valid(record)
         ::ActiveSupport::Deprecation.warn("assert_valid is deprecated. Use assert record.valid? instead", caller)
-        clean_backtrace do
-          assert record.valid?, record.errors.full_messages.join("\n")
-        end
+        assert record.valid?, record.errors.full_messages.join("\n")
       end
     end
   end
diff --git a/actionpack/lib/action_dispatch/testing/assertions/response.rb b/actionpack/lib/action_dispatch/testing/assertions/response.rb
new file mode 100644
index 0000000000..501a7c4dfb
--- /dev/null
+++ b/actionpack/lib/action_dispatch/testing/assertions/response.rb
@@ -0,0 +1,145 @@
+module ActionDispatch
+  module Assertions
+    # A small suite of assertions that test responses from Rails applications.
+    module ResponseAssertions
+      # Asserts that the response is one of the following types:
+      #
+      # * <tt>:success</tt>   - Status code was 200
+      # * <tt>:redirect</tt>  - Status code was in the 300-399 range
+      # * <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.
+      #
+      # ==== Examples
+      #
+      #   # assert that the response was a redirection
+      #   assert_response :redirect
+      #
+      #   # assert that the response code was status code 401 (unauthorized)
+      #   assert_response 401
+      #
+      def assert_response(type, message = nil)
+        validate_request!
+
+        if [ :success, :missing, :redirect, :error ].include?(type) && @response.send("#{type}?")
+          assert_block("") { true } # to count the assertion
+        elsif type.is_a?(Fixnum) && @response.response_code == type
+          assert_block("") { true } # to count the assertion
+        elsif type.is_a?(Symbol) && @response.response_code == ActionDispatch::StatusCodes::SYMBOL_TO_STATUS_CODE[type]
+          assert_block("") { true } # to count the assertion
+        else
+          assert_block(build_message(message, "Expected response to be a <?>, but was <?>", type, @response.response_code)) { false }
+        end
+      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.
+      #
+      # ==== Examples
+      #
+      #   # assert that the redirection was to the "index" action on the WeblogController
+      #   assert_redirected_to :controller => "weblog", :action => "index"
+      #
+      #   # assert that the redirection was to the named route login_url
+      #   assert_redirected_to login_url
+      #
+      #   # assert that the redirection was to the url for @customer
+      #   assert_redirected_to @customer
+      #
+      def assert_redirected_to(options = {}, message=nil)
+        validate_request!
+
+        assert_response(:redirect, message)
+        return true if options == @response.location
+
+        redirected_to_after_normalisation = normalize_argument_to_redirection(@response.location)
+        options_after_normalisation       = normalize_argument_to_redirection(options)
+
+        if redirected_to_after_normalisation != options_after_normalisation
+          flunk "Expected response to be a redirect to <#{options_after_normalisation}> but was a redirect to <#{redirected_to_after_normalisation}>"
+        end
+      end
+
+      # Asserts that the request was rendered with the appropriate template file or partials
+      #
+      # ==== Examples
+      #
+      #   # assert that the "new" view template was rendered
+      #   assert_template "new"
+      #
+      #   # assert that the "_customer" partial was rendered twice
+      #   assert_template :partial => '_customer', :count => 2
+      #
+      #   # assert that no partials were rendered
+      #   assert_template :partial => false
+      #
+      def assert_template(options = {}, message = nil)
+        validate_request!
+
+        case options
+         when NilClass, String
+          rendered = (@controller.template.rendered[:template] || []).map { |t| t.identifier }
+          msg = build_message(message,
+                  "expecting <?> but rendering with <?>",
+                  options, rendered.join(', '))
+          assert_block(msg) do
+            if options.nil?
+              @controller.template.rendered[:template].blank?
+            else
+              rendered.any? { |t| t.match(options) }
+            end
+          end
+        when Hash
+          if expected_partial = options[:partial]
+            partials = @controller.template.rendered[:partials]
+            if expected_count = options[:count]
+              found = partials.detect { |p, _| p.identifier.match(expected_partial) }
+              actual_count = found.nil? ? 0 : found.second
+              msg = build_message(message,
+                      "expecting ? to be rendered ? time(s) but rendered ? time(s)",
+                       expected_partial, expected_count, actual_count)
+              assert(actual_count == expected_count.to_i, msg)
+            else
+              msg = build_message(message,
+                      "expecting partial <?> but action rendered <?>",
+                      options[:partial], partials.keys)
+              assert(partials.keys.any? { |p| p.identifier.match(expected_partial) }, msg)
+            end
+          else
+            assert @controller.template.rendered[:partials].empty?,
+              "Expected no partials to be rendered"
+          end
+        end
+      end
+
+      private
+        # Proxy to to_param if the object will respond to it.
+        def parameterize(value)
+          value.respond_to?(:to_param) ? value.to_param : value
+        end
+
+        def normalize_argument_to_redirection(fragment)
+          after_routing = @controller.url_for(fragment)
+          if after_routing =~ %r{^\w+://.*}
+            after_routing
+          else
+            # FIXME - this should probably get removed.
+            if after_routing.first != '/'
+              after_routing = '/' + after_routing
+            end
+            @request.protocol + @request.host_with_port + after_routing
+          end
+        end
+
+        def validate_request!
+          unless @request.is_a?(ActionDispatch::Request)
+            raise ArgumentError, "@request must be an ActionDispatch::Request"
+          end
+        end
+    end
+  end
+end
diff --git a/actionpack/lib/action_controller/testing/assertions/routing.rb b/actionpack/lib/action_dispatch/testing/assertions/routing.rb
index 5101751cea..89d1a49403 100644
--- a/actionpack/lib/action_controller/testing/assertions/routing.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/routing.rb
@@ -1,4 +1,4 @@
-module ActionController
+module ActionDispatch
   module Assertions
     # Suite of assertions to test routes generated by Rails and the handling of requests made to them.
     module RoutingAssertions
@@ -44,19 +44,17 @@ module ActionController
           request_method = nil
         end
 
-        clean_backtrace do
-          ActionController::Routing::Routes.reload if ActionController::Routing::Routes.empty?
-          request = recognized_request_for(path, request_method)
+        ActionController::Routing::Routes.reload if ActionController::Routing::Routes.empty?
+        request = recognized_request_for(path, request_method)
 
-          expected_options = expected_options.clone
-          extras.each_key { |key| expected_options.delete key } unless extras.nil?
+        expected_options = expected_options.clone
+        extras.each_key { |key| expected_options.delete key } unless extras.nil?
 
-          expected_options.stringify_keys!
-          routing_diff = expected_options.diff(request.path_parameters)
-          msg = build_message(message, "The recognized options <?> did not match <?>, difference: <?>",
-              request.path_parameters, expected_options, expected_options.diff(request.path_parameters))
-          assert_block(msg) { request.path_parameters == expected_options }
-        end
+        expected_options.stringify_keys!
+        routing_diff = expected_options.diff(request.path_parameters)
+        msg = build_message(message, "The recognized options <?> did not match <?>, difference: <?>",
+            request.path_parameters, expected_options, expected_options.diff(request.path_parameters))
+        assert_block(msg) { request.path_parameters == expected_options }
       end
 
       # Asserts that the provided options can be used to generate the provided path.  This is the inverse of +assert_recognizes+.
@@ -78,21 +76,19 @@ module ActionController
       #   # 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)
-        clean_backtrace do
-          expected_path = "/#{expected_path}" unless expected_path[0] == ?/
-          # Load routes.rb if it hasn't been loaded.
-          ActionController::Routing::Routes.reload if ActionController::Routing::Routes.empty?
+        expected_path = "/#{expected_path}" unless expected_path[0] == ?/
+        # Load routes.rb if it hasn't been loaded.
+        ActionController::Routing::Routes.reload if ActionController::Routing::Routes.empty?
 
-          generated_path, extra_keys = ActionController::Routing::Routes.generate_extras(options, defaults)
-          found_extras = options.reject {|k, v| ! extra_keys.include? k}
+        generated_path, extra_keys = ActionController::Routing::Routes.generate_extras(options, defaults)
+        found_extras = options.reject {|k, v| ! extra_keys.include? k}
 
-          msg = build_message(message, "found extras <?>, not <?>", found_extras, extras)
-          assert_block(msg) { found_extras == extras }
+        msg = build_message(message, "found extras <?>, not <?>", found_extras, extras)
+        assert_block(msg) { found_extras == extras }
 
-          msg = build_message(message, "The generated path <?> did not match <?>", generated_path,
-              expected_path)
-          assert_block(msg) { expected_path == generated_path }
-        end
+        msg = build_message(message, "The generated path <?> did not match <?>", generated_path,
+            expected_path)
+        assert_block(msg) { expected_path == generated_path }
       end
 
       # Asserts that path and options match both ways; in other words, it verifies that <tt>path</tt> generates
diff --git a/actionpack/lib/action_controller/testing/assertions/selector.rb b/actionpack/lib/action_dispatch/testing/assertions/selector.rb
index 0d56ea5ef7..dd75cda6b9 100644
--- a/actionpack/lib/action_controller/testing/assertions/selector.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/selector.rb
@@ -3,7 +3,7 @@
 # Under MIT and/or CC By license.
 #++
 
-module ActionController
+module ActionDispatch
   module Assertions
     unless const_defined?(:NO_STRIP)
       NO_STRIP = %w{pre script style textarea}
diff --git a/actionpack/lib/action_controller/testing/assertions/tag.rb b/actionpack/lib/action_dispatch/testing/assertions/tag.rb
index 80249e0e83..ef6867576e 100644
--- a/actionpack/lib/action_controller/testing/assertions/tag.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/tag.rb
@@ -1,4 +1,4 @@
-module ActionController
+module ActionDispatch
   module Assertions
     # Pair of assertions to testing elements in the HTML output of the response.
     module TagAssertions
@@ -94,11 +94,9 @@ module ActionController
       # that allow optional closing tags (p, li, td). <em>You must explicitly
       # close all of your tags to use these assertions.</em>
       def assert_tag(*opts)
-        clean_backtrace do
-          opts = opts.size > 1 ? opts.last.merge({ :tag => opts.first.to_s }) : opts.first
-          tag = find_tag(opts)
-          assert tag, "expected tag, but no tag found matching #{opts.inspect} in:\n#{@response.body.inspect}"
-        end
+        opts = opts.size > 1 ? opts.last.merge({ :tag => opts.first.to_s }) : opts.first
+        tag = find_tag(opts)
+        assert tag, "expected tag, but no tag found matching #{opts.inspect} in:\n#{@response.body.inspect}"
       end
       
       # Identical to +assert_tag+, but asserts that a matching tag does _not_
@@ -116,11 +114,9 @@ module ActionController
       #   assert_no_tag :tag => "p",
       #              :children => { :count => 1..3, :only => { :tag => "img" } }
       def assert_no_tag(*opts)
-        clean_backtrace do
-          opts = opts.size > 1 ? opts.last.merge({ :tag => opts.first.to_s }) : opts.first
-          tag = find_tag(opts)
-          assert !tag, "expected no tag, but found tag matching #{opts.inspect} in:\n#{@response.body.inspect}"
-        end
+        opts = opts.size > 1 ? opts.last.merge({ :tag => opts.first.to_s }) : opts.first
+        tag = find_tag(opts)
+        assert !tag, "expected no tag, but found tag matching #{opts.inspect} in:\n#{@response.body.inspect}"
       end
     end
   end
diff --git a/actionpack/lib/action_dispatch/testing/test_request.rb b/actionpack/lib/action_dispatch/testing/test_request.rb
new file mode 100644
index 0000000000..20288aa7a5
--- /dev/null
+++ b/actionpack/lib/action_dispatch/testing/test_request.rb
@@ -0,0 +1,83 @@
+module ActionDispatch
+  class TestRequest < Request
+    DEFAULT_ENV = Rack::MockRequest.env_for('/')
+
+    def self.new(env = {})
+      super
+    end
+
+    def initialize(env = {})
+      super(DEFAULT_ENV.merge(env))
+
+      self.host        = 'test.host'
+      self.remote_addr = '0.0.0.0'
+      self.user_agent  = 'Rails Testing'
+    end
+
+    def env
+      write_cookies!
+      delete_nil_values!
+      super
+    end
+
+    def request_method=(method)
+      @env['REQUEST_METHOD'] = method.to_s.upcase
+    end
+
+    def host=(host)
+      @env['HTTP_HOST'] = host
+    end
+
+    def port=(number)
+      @env['SERVER_PORT'] = number.to_i
+    end
+
+    def request_uri=(uri)
+      @env['REQUEST_URI'] = uri
+    end
+
+    def path=(path)
+      @env['PATH_INFO'] = path
+    end
+
+    def action=(action_name)
+      path_parameters["action"] = action_name.to_s
+    end
+
+    def if_modified_since=(last_modified)
+      @env['HTTP_IF_MODIFIED_SINCE'] = last_modified
+    end
+
+    def if_none_match=(etag)
+      @env['HTTP_IF_NONE_MATCH'] = etag
+    end
+
+    def remote_addr=(addr)
+      @env['REMOTE_ADDR'] = addr
+    end
+
+    def user_agent=(user_agent)
+      @env['HTTP_USER_AGENT'] = user_agent
+    end
+
+    def accept=(mime_types)
+      @env.delete('action_dispatch.request.accepts')
+      @env['HTTP_ACCEPT'] = Array(mime_types).collect { |mime_types| mime_types.to_s }.join(",")
+    end
+
+    def cookies
+      @cookies ||= super
+    end
+
+    private
+      def write_cookies!
+        unless @cookies.blank?
+          @env['HTTP_COOKIE'] = @cookies.map { |name, value| "#{name}=#{value};" }.join(' ')
+        end
+      end
+
+      def delete_nil_values!
+        @env.delete_if { |k, v| v.nil? }
+      end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/testing/test_response.rb b/actionpack/lib/action_dispatch/testing/test_response.rb
new file mode 100644
index 0000000000..c35982e075
--- /dev/null
+++ b/actionpack/lib/action_dispatch/testing/test_response.rb
@@ -0,0 +1,131 @@
+module ActionDispatch
+  # Integration test methods such as ActionController::Integration::Session#get
+  # and ActionController::Integration::Session#post return objects of class
+  # TestResponse, which represent the HTTP response results of the requested
+  # controller actions.
+  #
+  # See Response for more information on controller response objects.
+  class TestResponse < Response
+    def self.from_response(response)
+      new.tap do |resp|
+        resp.status  = response.status
+        resp.headers = response.headers
+        resp.body    = response.body
+      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 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 tempate.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 tempate.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
+
+    # Was the URL not found?
+    def missing?
+      response_code == 404
+    end
+
+    # Were we redirected?
+    def redirect?
+      (300..399).include?(response_code)
+    end
+
+    # 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
+  end
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/reloader.rb b/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/reloader.rb
deleted file mode 100644
index b17d8c0926..0000000000
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/reloader.rb
+++ /dev/null
@@ -1,64 +0,0 @@
-require 'thread'
-
-module Rack
-  # Rack::Reloader checks on every request, but at most every +secs+
-  # seconds, if a file loaded changed, and reloads it, logging to
-  # rack.errors.
-  #
-  # It is recommended you use ShowExceptions to catch SyntaxErrors etc.
-
-  class Reloader
-    def initialize(app, secs=10)
-      @app = app
-      @secs = secs              # reload every @secs seconds max
-      @last = Time.now
-    end
-
-    def call(env)
-      if Time.now > @last + @secs
-        Thread.exclusive {
-          reload!(env['rack.errors'])
-          @last = Time.now
-        }
-      end
-
-      @app.call(env)
-    end
-
-    def reload!(stderr=$stderr)
-      need_reload = $LOADED_FEATURES.find_all { |loaded|
-        begin
-          if loaded =~ /\A[.\/]/  # absolute filename or 1.9
-            abs = loaded
-          else
-            abs = $LOAD_PATH.map { |path| ::File.join(path, loaded) }.
-                             find { |file| ::File.exist? file }
-          end
-
-          if abs
-            ::File.mtime(abs) > @last - @secs  rescue false
-          else
-            false
-          end
-        end
-      }
-
-      need_reload.each { |l|
-        $LOADED_FEATURES.delete l
-      }
-
-      need_reload.each { |to_load|
-        begin
-          if require to_load
-            stderr.puts "#{self.class}: reloaded `#{to_load}'"
-          end
-        rescue LoadError, SyntaxError => e
-          raise e                 # Possibly ShowExceptions
-        end
-      }
-
-      stderr.flush
-      need_reload
-    end
-  end
-end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack.rb
index 6349b95094..371d015690 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack.rb
@@ -3,7 +3,8 @@
 # Rack is freely distributable under the terms of an MIT-style license.
 # See COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-$:.unshift(File.expand_path(File.dirname(__FILE__)))
+path = File.expand_path(File.dirname(__FILE__))
+$:.unshift(path) unless $:.include?(path)
 
 
 # The Rack main module, serving as a namespace for all core Rack
@@ -14,7 +15,7 @@ $:.unshift(File.expand_path(File.dirname(__FILE__)))
 
 module Rack
   # The Rack protocol version number implemented.
-  VERSION = [0,1]
+  VERSION = [1,0]
 
   # Return the Rack protocol version as a dotted string.
   def self.version
@@ -23,7 +24,7 @@ module Rack
 
   # Return the Rack release as a dotted string.
   def self.release
-    "1.0 bundled"
+    "1.0"
   end
 
   autoload :Builder, "rack/builder"
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/adapter/camping.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/adapter/camping.rb
index 63bc787f54..63bc787f54 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/adapter/camping.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/adapter/camping.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/abstract/handler.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/abstract/handler.rb
index 214df6299e..214df6299e 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/abstract/handler.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/abstract/handler.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/abstract/request.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/abstract/request.rb
index 1d9ccec685..1d9ccec685 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/abstract/request.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/abstract/request.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/basic.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/basic.rb
index 9557224648..9557224648 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/basic.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/basic.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/md5.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/digest/md5.rb
index e579dc9632..e579dc9632 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/md5.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/digest/md5.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/nonce.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/digest/nonce.rb
index dbe109f29a..dbe109f29a 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/nonce.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/digest/nonce.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/params.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/digest/params.rb
index 730e2efdc8..730e2efdc8 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/params.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/digest/params.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/request.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/digest/request.rb
index a8aa3bf996..a8aa3bf996 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/request.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/digest/request.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/openid.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/openid.rb
index c5f6a5143e..c5f6a5143e 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/openid.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/auth/openid.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/builder.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/builder.rb
index 295235e56a..295235e56a 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/builder.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/builder.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/cascade.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/cascade.rb
index a038aa1105..a038aa1105 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/cascade.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/cascade.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/chunked.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/chunked.rb
index 280d89dd65..280d89dd65 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/chunked.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/chunked.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/commonlogger.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/commonlogger.rb
index 5e68ac626d..5e68ac626d 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/commonlogger.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/commonlogger.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/conditionalget.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/conditionalget.rb
index 7bec824181..046ebdb00a 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/conditionalget.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/conditionalget.rb
@@ -26,6 +26,8 @@ module Rack
       headers = Utils::HeaderHash.new(headers)
       if etag_matches?(env, headers) || modified_since?(env, headers)
         status = 304
+        headers.delete('Content-Type')
+        headers.delete('Content-Length')
         body = []
       end
       [status, headers, body]
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/content_length.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/content_length.rb
index 1e56d43853..1e56d43853 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/content_length.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/content_length.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/content_type.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/content_type.rb
index 0c1e1ca3e1..0c1e1ca3e1 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/content_type.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/content_type.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/deflater.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/deflater.rb
index a42b7477ae..14137a944d 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/deflater.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/deflater.rb
@@ -33,17 +33,15 @@ module Rack
 
       case encoding
       when "gzip"
+        headers['Content-Encoding'] = "gzip"
+        headers.delete('Content-Length')
         mtime = headers.key?("Last-Modified") ?
           Time.httpdate(headers["Last-Modified"]) : Time.now
-        body = self.class.gzip(body, mtime)
-        size = Rack::Utils.bytesize(body)
-        headers = headers.merge("Content-Encoding" => "gzip", "Content-Length" => size.to_s)
-        [status, headers, [body]]
+        [status, headers, GzipStream.new(body, mtime)]
       when "deflate"
-        body = self.class.deflate(body)
-        size = Rack::Utils.bytesize(body)
-        headers = headers.merge("Content-Encoding" => "deflate", "Content-Length" => size.to_s)
-        [status, headers, [body]]
+        headers['Content-Encoding'] = "deflate"
+        headers.delete('Content-Length')
+        [status, headers, DeflateStream.new(body)]
       when "identity"
         [status, headers, body]
       when nil
@@ -52,34 +50,47 @@ module Rack
       end
     end
 
-    def self.gzip(body, mtime)
-      io = StringIO.new
-      gzip = Zlib::GzipWriter.new(io)
-      gzip.mtime = mtime
+    class GzipStream
+      def initialize(body, mtime)
+        @body = body
+        @mtime = mtime
+      end
 
-      # TODO: Add streaming
-      body.each { |part| gzip << part }
+      def each(&block)
+        @writer = block
+        gzip  =::Zlib::GzipWriter.new(self)
+        gzip.mtime = @mtime
+        @body.each { |part| gzip << part }
+        @body.close if @body.respond_to?(:close)
+        gzip.close
+        @writer = nil
+      end
 
-      gzip.close
-      return io.string
+      def write(data)
+        @writer.call(data)
+      end
     end
 
-    DEFLATE_ARGS = [
-      Zlib::DEFAULT_COMPRESSION,
-      # drop the zlib header which causes both Safari and IE to choke
-     -Zlib::MAX_WBITS,
-      Zlib::DEF_MEM_LEVEL,
-      Zlib::DEFAULT_STRATEGY
-    ]
+    class DeflateStream
+      DEFLATE_ARGS = [
+        Zlib::DEFAULT_COMPRESSION,
+        # drop the zlib header which causes both Safari and IE to choke
+        -Zlib::MAX_WBITS,
+        Zlib::DEF_MEM_LEVEL,
+        Zlib::DEFAULT_STRATEGY
+      ]
 
-    # Loosely based on Mongrel's Deflate handler
-    def self.deflate(body)
-      deflater = Zlib::Deflate.new(*DEFLATE_ARGS)
-
-      # TODO: Add streaming
-      body.each { |part| deflater << part }
+      def initialize(body)
+        @body = body
+      end
 
-      return deflater.finish
+      def each
+        deflater = ::Zlib::Deflate.new(*DEFLATE_ARGS)
+        @body.each { |part| yield deflater.deflate(part) }
+        @body.close if @body.respond_to?(:close)
+        yield deflater.finish
+        nil
+      end
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/directory.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/directory.rb
index acdd3029d3..acdd3029d3 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/directory.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/directory.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/file.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/file.rb
index fe62bd6b86..fe62bd6b86 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/file.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/file.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler.rb
index 1018af64c7..5624a1e79d 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler.rb
@@ -10,16 +10,37 @@ module Rack
   module Handler
     def self.get(server)
       return unless server
+      server = server.to_s
 
       if klass = @handlers[server]
         obj = Object
         klass.split("::").each { |x| obj = obj.const_get(x) }
         obj
       else
-        Rack::Handler.const_get(server.capitalize)
+        try_require('rack/handler', server)
+        const_get(server)
       end
     end
 
+    # Transforms server-name constants to their canonical form as filenames,
+    # then tries to require them but silences the LoadError if not found
+    #
+    # Naming convention:
+    #
+    #   Foo # => 'foo'
+    #   FooBar # => 'foo_bar.rb'
+    #   FooBAR # => 'foobar.rb'
+    #   FOObar # => 'foobar.rb'
+    #   FOOBAR # => 'foobar.rb'
+    #   FooBarBaz # => 'foo_bar_baz.rb'
+    def self.try_require(prefix, const_name)
+      file = const_name.gsub(/^[A-Z]+/) { |pre| pre.downcase }.
+        gsub(/[A-Z]+[^A-Z]/, '_\&').downcase
+
+      require(::File.join(prefix, file))
+    rescue LoadError
+    end
+
     def self.register(server, klass)
       @handlers ||= {}
       @handlers[server] = klass
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/cgi.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/cgi.rb
index e38156c7f0..f45f3d735a 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/cgi.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/cgi.rb
@@ -15,7 +15,7 @@ module Rack
 
         env["SCRIPT_NAME"] = ""  if env["SCRIPT_NAME"] == "/"
 
-        env.update({"rack.version" => [0,1],
+        env.update({"rack.version" => [1,0],
                      "rack.input" => $stdin,
                      "rack.errors" => $stderr,
 
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/evented_mongrel.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/evented_mongrel.rb
index 0f5cbf7293..0f5cbf7293 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/evented_mongrel.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/evented_mongrel.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/fastcgi.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/fastcgi.rb
index 6324c7d274..11e1fcaa74 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/fastcgi.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/fastcgi.rb
@@ -1,6 +1,17 @@
 require 'fcgi'
 require 'socket'
 require 'rack/content_length'
+require 'rack/rewindable_input'
+
+class FCGI::Stream
+  alias _rack_read_without_buffer read
+
+  def read(n, buffer=nil)
+    buf = _rack_read_without_buffer n
+    buffer.replace(buf.to_s)  if buffer
+    buf
+  end
+end
 
 module Rack
   module Handler
@@ -13,34 +24,18 @@ module Rack
         }
       end
 
-      module ProperStream       # :nodoc:
-        def each                # This is missing by default.
-          while line = gets
-            yield line
-          end
-        end
-
-        def read(*args)
-          if args.empty?
-            super || ""           # Empty string on EOF.
-          else
-            super
-          end
-        end
-      end
-
       def self.serve(request, app)
         app = Rack::ContentLength.new(app)
 
         env = request.env
         env.delete "HTTP_CONTENT_LENGTH"
 
-        request.in.extend ProperStream
-
         env["SCRIPT_NAME"] = ""  if env["SCRIPT_NAME"] == "/"
+        
+        rack_input = RewindableInput.new(request.in)
 
-        env.update({"rack.version" => [0,1],
-                     "rack.input" => request.in,
+        env.update({"rack.version" => [1,0],
+                     "rack.input" => rack_input,
                      "rack.errors" => request.err,
 
                      "rack.multithread" => false,
@@ -57,12 +52,16 @@ module Rack
         env.delete "CONTENT_TYPE"  if env["CONTENT_TYPE"] == ""
         env.delete "CONTENT_LENGTH"  if env["CONTENT_LENGTH"] == ""
 
-        status, headers, body = app.call(env)
         begin
-          send_headers request.out, status, headers
-          send_body request.out, body
+          status, headers, body = app.call(env)
+          begin
+            send_headers request.out, status, headers
+            send_body request.out, body
+          ensure
+            body.close  if body.respond_to? :close
+          end
         ensure
-          body.close  if body.respond_to? :close
+          rack_input.close
           request.finish
         end
       end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/lsws.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/lsws.rb
index c65ba3ec8e..7231336d7b 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/lsws.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/lsws.rb
@@ -15,7 +15,7 @@ module Rack
         env = ENV.to_hash
         env.delete "HTTP_CONTENT_LENGTH"
         env["SCRIPT_NAME"] = "" if env["SCRIPT_NAME"] == "/"
-        env.update({"rack.version" => [0,1],
+        env.update({"rack.version" => [1,0],
                      "rack.input" => StringIO.new($stdin.read.to_s),
                      "rack.errors" => $stderr,
                      "rack.multithread" => false,
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/mongrel.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/mongrel.rb
index f0c0d58330..3a5ef32d4b 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/mongrel.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/mongrel.rb
@@ -45,7 +45,7 @@ module Rack
 
         env["SCRIPT_NAME"] = ""  if env["SCRIPT_NAME"] == "/"
 
-        env.update({"rack.version" => [0,1],
+        env.update({"rack.version" => [1,0],
                      "rack.input" => request.body || StringIO.new(""),
                      "rack.errors" => $stderr,
 
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/scgi.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/scgi.rb
index 9495c66374..6c4932df95 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/scgi.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/scgi.rb
@@ -32,7 +32,7 @@ module Rack
         env["PATH_INFO"] = env["REQUEST_PATH"]
         env["QUERY_STRING"] ||= ""
         env["SCRIPT_NAME"] = ""
-        env.update({"rack.version" => [0,1],
+        env.update({"rack.version" => [1,0],
                      "rack.input" => StringIO.new(input_body),
                      "rack.errors" => $stderr,
 
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/swiftiplied_mongrel.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/swiftiplied_mongrel.rb
index 4bafd0b953..4bafd0b953 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/swiftiplied_mongrel.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/swiftiplied_mongrel.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/thin.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/thin.rb
index 3d4fedff75..3d4fedff75 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/thin.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/thin.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/webrick.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/webrick.rb
index 829e7d6bf8..2bdc83a9ff 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/handler/webrick.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/handler/webrick.rb
@@ -22,7 +22,7 @@ module Rack
         env = req.meta_vars
         env.delete_if { |k, v| v.nil? }
 
-        env.update({"rack.version" => [0,1],
+        env.update({"rack.version" => [1,0],
                      "rack.input" => StringIO.new(req.body.to_s),
                      "rack.errors" => $stderr,
 
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/head.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/head.rb
index deab822a99..deab822a99 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/head.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/head.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/lint.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/lint.rb
index 44a33ce36e..bf2e9787a1 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/lint.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/lint.rb
@@ -88,9 +88,9 @@ module Rack
       ##                      within the application. This may be an
       ##                      empty string, if the request URL targets
       ##                      the application root and does not have a
-      ##                      trailing slash. This information should be
-      ##                      decoded by the server if it comes from a
-      ##                      URL.
+      ##                      trailing slash. This value may be
+      ##                      percent-encoded when I originating from
+      ##                      a URL.
 
       ## <tt>QUERY_STRING</tt>:: The portion of the request URL that
       ##                         follows the <tt>?</tt>, if any. May be
@@ -111,19 +111,48 @@ module Rack
       ## In addition to this, the Rack environment must include these
       ## Rack-specific variables:
 
-      ## <tt>rack.version</tt>:: The Array [0,1], representing this version of Rack.
+      ## <tt>rack.version</tt>:: The Array [1,0], representing this version of Rack.
       ## <tt>rack.url_scheme</tt>:: +http+ or +https+, depending on the request URL.
       ## <tt>rack.input</tt>:: See below, the input stream.
       ## <tt>rack.errors</tt>:: See below, the error stream.
       ## <tt>rack.multithread</tt>:: true if the application object may be simultaneously invoked by another thread in the same process, false otherwise.
       ## <tt>rack.multiprocess</tt>:: true if an equivalent application object may be simultaneously invoked by another process, false otherwise.
       ## <tt>rack.run_once</tt>:: true if the server expects (but does not guarantee!) that the application will only be invoked this one time during the life of its containing process. Normally, this will only be true for a server based on CGI (or something similar).
+      ##
+
+      ## Additional environment specifications have approved to
+      ## standardized middleware APIs.  None of these are required to
+      ## be implemented by the server.
+
+      ## <tt>rack.session</tt>:: A hash like interface for storing request session data.
+      ##                         The store must implement:
+      if session = env['rack.session']
+        ##                         store(key, value)         (aliased as []=);
+        assert("session #{session.inspect} must respond to store and []=") {
+          session.respond_to?(:store) && session.respond_to?(:[]=)
+        }
+
+        ##                         fetch(key, default = nil) (aliased as []);
+        assert("session #{session.inspect} must respond to fetch and []") {
+          session.respond_to?(:fetch) && session.respond_to?(:[])
+        }
+
+        ##                         delete(key);
+        assert("session #{session.inspect} must respond to delete") {
+          session.respond_to?(:delete)
+        }
+
+        ##                         clear;
+        assert("session #{session.inspect} must respond to clear") {
+          session.respond_to?(:clear)
+        }
+      end
 
       ## The server or the application can store their own data in the
       ## environment, too.  The keys must contain at least one dot,
       ## and should be prefixed uniquely.  The prefix <tt>rack.</tt>
-      ## is reserved for use with the Rack core distribution and must
-      ## not be used otherwise.
+      ## is reserved for use with the Rack core distribution and other
+      ## accepted specifications and must not be used otherwise.
       ##
 
       %w[REQUEST_METHOD SERVER_NAME SERVER_PORT
@@ -202,9 +231,12 @@ module Rack
     end
 
     ## === The Input Stream
+    ##
+    ## The input stream is an IO-like object which contains the raw HTTP
+    ## POST data. If it is a file then it must be opened in binary mode.
     def check_input(input)
-      ## The input stream must respond to +gets+, +each+ and +read+.
-      [:gets, :each, :read].each { |method|
+      ## The input stream must respond to +gets+, +each+, +read+ and +rewind+.
+      [:gets, :each, :read, :rewind].each { |method|
         assert("rack.input #{input} does not respond to ##{method}") {
           input.respond_to? method
         }
@@ -222,10 +254,6 @@ module Rack
         @input.size
       end
 
-      def rewind
-        @input.rewind
-      end
-
       ## * +gets+ must be called without arguments and return a string,
       ##   or +nil+ on EOF.
       def gets(*args)
@@ -237,21 +265,44 @@ module Rack
         v
       end
 
-      ## * +read+ must be called without or with one integer argument
-      ##   and return a string, or +nil+ on EOF.
+      ## * +read+ behaves like IO#read. Its signature is <tt>read([length, [buffer]])</tt>.
+      ##   If given, +length+ must be an non-negative Integer (>= 0) or +nil+, and +buffer+ must
+      ##   be a String and may not be nil. If +length+ is given and not nil, then this method
+      ##   reads at most +length+ bytes from the input stream. If +length+ is not given or nil,
+      ##   then this method reads all data until EOF.
+      ##   When EOF is reached, this method returns nil if +length+ is given and not nil, or ""
+      ##   if +length+ is not given or is nil.
+      ##   If +buffer+ is given, then the read data will be placed into +buffer+ instead of a
+      ##   newly created String object.
       def read(*args)
         assert("rack.input#read called with too many arguments") {
-          args.size <= 1
+          args.size <= 2
         }
-        if args.size == 1
-          assert("rack.input#read called with non-integer argument") {
-            args.first.kind_of? Integer
+        if args.size >= 1
+          assert("rack.input#read called with non-integer and non-nil length") {
+            args.first.kind_of?(Integer) || args.first.nil?
+          }
+          assert("rack.input#read called with a negative length") {
+            args.first.nil? || args.first >= 0
           }
         end
+        if args.size >= 2
+          assert("rack.input#read called with non-String buffer") {
+            args[1].kind_of?(String)
+          }
+        end
+        
         v = @input.read(*args)
-        assert("rack.input#read didn't return a String") {
+        
+        assert("rack.input#read didn't return nil or a String") {
           v.nil? or v.instance_of? String
         }
+        if args[0].nil?
+          assert("rack.input#read(nil) returned nil on EOF") {
+            !v.nil?
+          }
+        end
+        
         v
       end
 
@@ -265,6 +316,23 @@ module Rack
           yield line
         }
       end
+      
+      ## * +rewind+ must be called without arguments. It rewinds the input
+      ##   stream back to the beginning. It must not raise Errno::ESPIPE:
+      ##   that is, it may not be a pipe or a socket. Therefore, handler
+      ##   developers must buffer the input data into some rewindable object
+      ##   if the underlying input stream is not rewindable.
+      def rewind(*args)
+        assert("rack.input#rewind called with arguments") { args.size == 0 }
+        assert("rack.input#rewind raised Errno::ESPIPE") {
+          begin
+            @input.rewind
+            true
+          rescue Errno::ESPIPE
+            false
+          end
+        }
+      end
 
       ## * +close+ must never be called on the input stream.
       def close(*args)
@@ -316,13 +384,14 @@ module Rack
 
     ## === The Status
     def check_status(status)
-      ## The status, if parsed as integer (+to_i+), must be greater than or equal to 100.
+      ## This is an HTTP status. When parsed as integer (+to_i+), it must be
+      ## greater than or equal to 100.
       assert("Status must be >=100 seen as integer") { status.to_i >= 100 }
     end
 
     ## === The Headers
     def check_headers(header)
-      ## The header must respond to each, and yield values of key and value.
+      ## The header must respond to +each+, and yield values of key and value.
       assert("headers object should respond to #each, but doesn't (got #{header.class} as headers)") {
          header.respond_to? :each
       }
@@ -344,7 +413,8 @@ module Rack
         ## The values of the header must be Strings,
         assert("a header value must be a String, but the value of " +
           "'#{key}' is a #{value.class}") { value.kind_of? String }
-        ## consisting of lines (for multiple header values) seperated by "\n".
+        ## consisting of lines (for multiple header values, e.g. multiple
+        ## <tt>Set-Cookie</tt> values) seperated by "\n".
         value.split("\n").each { |item|
           ## The lines must not contain characters below 037.
           assert("invalid header value #{key}: #{item.inspect}") {
@@ -416,7 +486,7 @@ module Rack
     ## === The Body
     def each
       @closed = false
-      ## The Body must respond to #each
+      ## The Body must respond to +each+
       @body.each { |part|
         ## and must only yield String values.
         assert("Body yielded non-string value #{part.inspect}") {
@@ -425,14 +495,19 @@ module Rack
         yield part
       }
       ##
-      ## If the Body responds to #close, it will be called after iteration.
+      ## The Body itself should not be an instance of String, as this will
+      ## break in Ruby 1.9.
+      ##
+      ## If the Body responds to +close+, it will be called after iteration.
       # XXX howto: assert("Body has not been closed") { @closed }
 
 
       ##
-      ## If the Body responds to #to_path, it must return a String
+      ## If the Body responds to +to_path+, it must return a String
       ## identifying the location of a file whose contents are identical
-      ## to that produced by calling #each.
+      ## to that produced by calling +each+; this may be used by the
+      ## server as an alternative, possibly more efficient way to
+      ## transport the response.
 
       if @body.respond_to?(:to_path)
         assert("The file identified by body.to_path does not exist") {
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/lobster.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/lobster.rb
index f63f419a49..f63f419a49 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/lobster.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/lobster.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/lock.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/lock.rb
index 93238528c4..93238528c4 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/lock.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/lock.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/methodoverride.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/methodoverride.rb
index 0eed29f471..0eed29f471 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/methodoverride.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/methodoverride.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/mime.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/mime.rb
index 5a6a73a97b..5a6a73a97b 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/mime.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/mime.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/mock.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/mock.rb
index 70852da3db..fdefb0340a 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/mock.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/mock.rb
@@ -40,7 +40,7 @@ module Rack
     end
 
     DEFAULT_ENV = {
-      "rack.version" => [0,1],
+      "rack.version" => [1,0],
       "rack.input" => StringIO.new,
       "rack.errors" => StringIO.new,
       "rack.multithread" => true,
@@ -73,14 +73,17 @@ module Rack
     # Return the Rack environment used for a request to +uri+.
     def self.env_for(uri="", opts={})
       uri = URI(uri)
+      uri.path = "/#{uri.path}" unless uri.path[0] == ?/
+
       env = DEFAULT_ENV.dup
 
-      env["REQUEST_METHOD"] = opts[:method] || "GET"
+      env["REQUEST_METHOD"] = opts[:method] ? opts[:method].to_s.upcase : "GET"
       env["SERVER_NAME"] = uri.host || "example.org"
       env["SERVER_PORT"] = uri.port ? uri.port.to_s : "80"
       env["QUERY_STRING"] = uri.query.to_s
       env["PATH_INFO"] = (!uri.path || uri.path.empty?) ? "/" : uri.path
       env["rack.url_scheme"] = uri.scheme || "http"
+      env["HTTPS"] = env["rack.url_scheme"] == "https" ? "on" : "off"
 
       env["SCRIPT_NAME"] = opts[:script_name] || ""
 
@@ -90,6 +93,27 @@ module Rack
         env["rack.errors"] = StringIO.new
       end
 
+      if params = opts[:params]
+        if env["REQUEST_METHOD"] == "GET"
+          params = Utils.parse_nested_query(params) if params.is_a?(String)
+          params.update(Utils.parse_nested_query(env["QUERY_STRING"]))
+          env["QUERY_STRING"] = Utils.build_nested_query(params)
+        elsif !opts.has_key?(:input)
+          opts["CONTENT_TYPE"] = "application/x-www-form-urlencoded"
+          if params.is_a?(Hash)
+            if data = Utils::Multipart.build_multipart(params)
+              opts[:input] = data
+              opts["CONTENT_LENGTH"] ||= data.length.to_s
+              opts["CONTENT_TYPE"] = "multipart/form-data; boundary=#{Utils::Multipart::MULTIPART_BOUNDARY}"
+            else
+              opts[:input] = Utils.build_nested_query(params)
+            end
+          else
+            opts[:input] = params
+          end
+        end
+      end
+
       opts[:input] ||= ""
       if String === opts[:input]
         env["rack.input"] = StringIO.new(opts[:input])
@@ -125,7 +149,7 @@ module Rack
       @body = ""
       body.each { |part| @body << part }
 
-      @errors = errors.string
+      @errors = errors.string if errors.respond_to?(:string)
     end
 
     # Status
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/recursive.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/recursive.rb
index bf8b965925..bf8b965925 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/recursive.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/recursive.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/reloader.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/reloader.rb
new file mode 100644
index 0000000000..aa2f060be5
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/reloader.rb
@@ -0,0 +1,106 @@
+#          Copyright (c) 2009 Michael Fellinger m.fellinger@gmail.com
+# All files in this distribution are subject to the terms of the Ruby license.
+
+require 'pathname'
+
+module Rack
+
+  # High performant source reloader
+  #
+  # This class acts as Rack middleware.
+  #
+  # What makes it especially suited for use in a production environment is that
+  # any file will only be checked once and there will only be made one system
+  # call stat(2).
+  #
+  # Please note that this will not reload files in the background, it does so
+  # only when actively called.
+  #
+  # It is performing a check/reload cycle at the start of every request, but
+  # also respects a cool down time, during which nothing will be done.
+  class Reloader
+    def initialize(app, cooldown = 10, backend = Stat)
+      @app = app
+      @cooldown = cooldown
+      @last = (Time.now - cooldown)
+      @cache = {}
+      @mtimes = {}
+
+      extend backend
+    end
+
+    def call(env)
+      if @cooldown and Time.now > @last + @cooldown
+        if Thread.list.size > 1
+          Thread.exclusive{ reload! }
+        else
+          reload!
+        end
+
+        @last = Time.now
+      end
+
+      @app.call(env)
+    end
+
+    def reload!(stderr = $stderr)
+      rotation do |file, mtime|
+        previous_mtime = @mtimes[file] ||= mtime
+        safe_load(file, mtime, stderr) if mtime > previous_mtime
+      end
+    end
+
+    # A safe Kernel::load, issuing the hooks depending on the results
+    def safe_load(file, mtime, stderr = $stderr)
+      load(file)
+      stderr.puts "#{self.class}: reloaded `#{file}'"
+      file
+    rescue LoadError, SyntaxError => ex
+      stderr.puts ex
+    ensure
+      @mtimes[file] = mtime
+    end
+
+    module Stat
+      def rotation
+        files = [$0, *$LOADED_FEATURES].uniq
+        paths = ['./', *$LOAD_PATH].uniq
+
+        files.map{|file|
+          next if file =~ /\.(so|bundle)$/ # cannot reload compiled files
+
+          found, stat = figure_path(file, paths)
+          next unless found and stat and mtime = stat.mtime
+
+          @cache[file] = found
+
+          yield(found, mtime)
+        }.compact
+      end
+
+      # Takes a relative or absolute +file+ name, a couple possible +paths+ that
+      # the +file+ might reside in. Returns the full path and File::Stat for the
+      # path.
+      def figure_path(file, paths)
+        found = @cache[file]
+        found = file if !found and Pathname.new(file).absolute?
+        found, stat = safe_stat(found)
+        return found, stat if found
+
+        paths.each do |possible_path|
+          path = ::File.join(possible_path, file)
+          found, stat = safe_stat(path)
+          return ::File.expand_path(found), stat if found
+        end
+      end
+
+      def safe_stat(file)
+        return unless file
+        stat = ::File.stat(file)
+        return file, stat if stat.file?
+      rescue Errno::ENOENT, Errno::ENOTDIR
+        @cache.delete(file) and false
+      end
+    end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/request.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/request.rb
index d77fa26575..0bff7af038 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/request.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/request.rb
@@ -17,7 +17,7 @@ module Rack
     # The environment of the request.
     attr_reader :env
 
-    def self.new(env)
+    def self.new(env, *args)
       if self == Rack::Request
         env["rack.request"] ||= super
       else
@@ -38,6 +38,8 @@ module Rack
     def query_string;    @env["QUERY_STRING"].to_s                end
     def content_length;  @env['CONTENT_LENGTH']                   end
     def content_type;    @env['CONTENT_TYPE']                     end
+    def session;         @env['rack.session'] ||= {}              end
+    def session_options; @env['rack.session.options'] ||= {}      end
 
     # The media type (type/subtype) portion of the CONTENT_TYPE header
     # without any media type parameters. e.g., when CONTENT_TYPE is
@@ -46,7 +48,7 @@ module Rack
     # For more information on the use of media types in HTTP, see:
     # http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7
     def media_type
-      content_type && content_type.split(/\s*[;,]\s*/, 2)[0].downcase
+      content_type && content_type.split(/\s*[;,]\s*/, 2).first.downcase
     end
 
     # The media type parameters provided in CONTENT_TYPE as a Hash, or
@@ -92,6 +94,14 @@ module Rack
       'multipart/form-data'
     ]
 
+    # The set of media-types. Requests that do not indicate
+    # one of the media types presents in this list will not be eligible
+    # for param parsing like soap attachments or generic multiparts
+    PARSEABLE_DATA_MEDIA_TYPES = [
+      'multipart/related',
+      'multipart/mixed'
+    ]  
+
     # Determine whether the request body contains form-data by checking
     # the request media_type against registered form-data media-types:
     # "application/x-www-form-urlencoded" and "multipart/form-data". The
@@ -101,6 +111,12 @@ module Rack
       FORM_DATA_MEDIA_TYPES.include?(media_type)
     end
 
+    # Determine whether the request body contains data by checking
+    # the request media_type against registered parse-data media-types
+    def parseable_data?
+      PARSEABLE_DATA_MEDIA_TYPES.include?(media_type)
+    end
+
     # Returns the data recieved in the query string.
     def GET
       if @env["rack.request.query_string"] == query_string
@@ -119,7 +135,7 @@ module Rack
     def POST
       if @env["rack.request.form_input"].eql? @env["rack.input"]
         @env["rack.request.form_hash"]
-      elsif form_data?
+      elsif form_data? || parseable_data?
         @env["rack.request.form_input"] = @env["rack.input"]
         unless @env["rack.request.form_hash"] =
             Utils::Multipart.parse_multipart(env)
@@ -131,12 +147,7 @@ module Rack
           @env["rack.request.form_vars"] = form_vars
           @env["rack.request.form_hash"] = Utils.parse_nested_query(form_vars)
 
-          begin
-            @env["rack.input"].rewind if @env["rack.input"].respond_to?(:rewind)
-          rescue Errno::ESPIPE
-            # Handles exceptions raised by input streams that cannot be rewound
-            # such as when using plain CGI under Apache
-          end
+          @env["rack.input"].rewind
         end
         @env["rack.request.form_hash"]
       else
@@ -211,11 +222,13 @@ module Rack
 
       url
     end
-
+    
+    def path
+      script_name + path_info
+    end
+    
     def fullpath
-      path = script_name + path_info
-      path << "?" << query_string  unless query_string.empty?
-      path
+      query_string.empty? ? path : "#{path}?#{query_string}"
     end
 
     def accept_encoding
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/response.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/response.rb
index caf60d5b19..28b4d8302f 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/response.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/response.rb
@@ -95,6 +95,10 @@ module Rack
                    :expires => Time.at(0) }.merge(value))
     end
 
+    def redirect(target, status=302)
+      self.status = status
+      self["Location"] = target
+    end
 
     def finish(&block)
       @block = block
@@ -120,7 +124,7 @@ module Rack
     #
     def write(str)
       s = str.to_s
-      @length += s.size
+      @length += Rack::Utils.bytesize(s)
       @writer.call s
 
       header["Content-Length"] = @length.to_s
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/rewindable_input.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/rewindable_input.rb
new file mode 100644
index 0000000000..9e9b21ff99
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/rewindable_input.rb
@@ -0,0 +1,98 @@
+require 'tempfile'
+
+module Rack
+  # Class which can make any IO object rewindable, including non-rewindable ones. It does
+  # this by buffering the data into a tempfile, which is rewindable.
+  #
+  # rack.input is required to be rewindable, so if your input stream IO is non-rewindable
+  # by nature (e.g. a pipe or a socket) then you can wrap it in an object of this class
+  # to easily make it rewindable.
+  #
+  # Don't forget to call #close when you're done. This frees up temporary resources that
+  # RewindableInput uses, though it does *not* close the original IO object.
+  class RewindableInput
+    def initialize(io)
+      @io = io
+      @rewindable_io = nil
+      @unlinked = false
+    end
+    
+    def gets
+      make_rewindable unless @rewindable_io
+      @rewindable_io.gets
+    end
+    
+    def read(*args)
+      make_rewindable unless @rewindable_io
+      @rewindable_io.read(*args)
+    end
+    
+    def each(&block)
+      make_rewindable unless @rewindable_io
+      @rewindable_io.each(&block)
+    end
+    
+    def rewind
+      make_rewindable unless @rewindable_io
+      @rewindable_io.rewind
+    end
+    
+    # Closes this RewindableInput object without closing the originally
+    # wrapped IO oject. Cleans up any temporary resources that this RewindableInput
+    # has created.
+    #
+    # This method may be called multiple times. It does nothing on subsequent calls.
+    def close
+      if @rewindable_io
+        if @unlinked
+          @rewindable_io.close
+        else
+          @rewindable_io.close!
+        end
+        @rewindable_io = nil
+      end
+    end
+    
+    private
+    
+    # Ruby's Tempfile class has a bug. Subclass it and fix it.
+    class Tempfile < ::Tempfile
+      def _close
+        @tmpfile.close if @tmpfile
+        @data[1] = nil if @data
+        @tmpfile = nil
+      end
+    end
+
+    def make_rewindable
+      # Buffer all data into a tempfile. Since this tempfile is private to this
+      # RewindableInput object, we chmod it so that nobody else can read or write
+      # it. On POSIX filesystems we also unlink the file so that it doesn't
+      # even have a file entry on the filesystem anymore, though we can still
+      # access it because we have the file handle open.
+      @rewindable_io = Tempfile.new('RackRewindableInput')
+      @rewindable_io.chmod(0000)
+      if filesystem_has_posix_semantics?
+        @rewindable_io.unlink
+        @unlinked = true
+      end
+      
+      buffer = ""
+      while @io.read(1024 * 4, buffer)
+        entire_buffer_written_out = false
+        while !entire_buffer_written_out
+          written = @rewindable_io.write(buffer)
+          entire_buffer_written_out = written == buffer.size
+          if !entire_buffer_written_out
+            buffer.slice!(0 .. written - 1)
+          end
+        end
+      end
+      @rewindable_io.rewind
+    end
+    
+    def filesystem_has_posix_semantics?
+      RUBY_PLATFORM !~ /(mswin|mingw|cygwin|java)/
+    end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/session/abstract/id.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/session/abstract/id.rb
index 218144c17f..218144c17f 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/session/abstract/id.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/session/abstract/id.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/session/cookie.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/session/cookie.rb
index eace9bd0c6..eace9bd0c6 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/session/cookie.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/session/cookie.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/session/memcache.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/session/memcache.rb
index 4a65cbf35d..4a65cbf35d 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/session/memcache.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/session/memcache.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/session/pool.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/session/pool.rb
index f6f87408bb..f6f87408bb 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/session/pool.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/session/pool.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/showexceptions.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/showexceptions.rb
index 697bc41fdb..697bc41fdb 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/showexceptions.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/showexceptions.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/showstatus.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/showstatus.rb
index 28258c7c89..28258c7c89 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/showstatus.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/showstatus.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/static.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/static.rb
index 168e8f83b2..168e8f83b2 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/static.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/static.rb
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/urlmap.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/urlmap.rb
index 0ff32df181..fcf6616c58 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/urlmap.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/urlmap.rb
@@ -30,7 +30,7 @@ module Rack
         location = location.chomp('/')
 
         [host, location, app]
-      }.sort_by { |(h, l, a)| [-l.size, h.to_s.size] }  # Longest path first
+      }.sort_by { |(h, l, a)| [h ? -h.size : (-1.0 / 0.0), -l.size] }  # Longest path first
     end
 
     def call(env)
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/utils.rb b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/utils.rb
index 0a61bce707..42e2e698f4 100644
--- a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/utils.rb
+++ b/actionpack/lib/action_dispatch/vendor/rack-1.1.pre/rack/utils.rb
@@ -1,3 +1,5 @@
+# -*- encoding: binary -*-
+
 require 'set'
 require 'tempfile'
 
@@ -63,7 +65,7 @@ module Rack
     module_function :parse_nested_query
 
     def normalize_params(params, name, v = nil)
-      name =~ %r([\[\]]*([^\[\]]+)\]*)
+      name =~ %r(\A[\[\]]*([^\[\]]+)\]*)
       k = $1 || ''
       after = $' || ''
 
@@ -73,12 +75,12 @@ module Rack
         params[k] = v
       elsif after == "[]"
         params[k] ||= []
-        raise TypeError unless params[k].is_a?(Array)
+        raise TypeError, "expected Array (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Array)
         params[k] << v
       elsif after =~ %r(^\[\]\[([^\[\]]+)\]$) || after =~ %r(^\[\](.+)$)
         child_key = $1
         params[k] ||= []
-        raise TypeError unless params[k].is_a?(Array)
+        raise TypeError, "expected Array (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Array)
         if params[k].last.is_a?(Hash) && !params[k].last.key?(child_key)
           normalize_params(params[k].last, child_key, v)
         else
@@ -86,6 +88,7 @@ module Rack
         end
       else
         params[k] ||= {}
+        raise TypeError, "expected Hash (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Hash)
         params[k] = normalize_params(params[k], after, v)
       end
 
@@ -104,6 +107,25 @@ module Rack
     end
     module_function :build_query
 
+    def build_nested_query(value, prefix = nil)
+      case value
+      when Array
+        value.map { |v|
+          build_nested_query(v, "#{prefix}[]")
+        }.join("&")
+      when Hash
+        value.map { |k, v|
+          build_nested_query(v, prefix ? "#{prefix}[#{escape(k)}]" : escape(k))
+        }.join("&")
+      when String
+        raise ArgumentError, "value must be a Hash" if prefix.nil?
+        "#{prefix}=#{escape(value)}"
+      else
+        prefix
+      end
+    end
+    module_function :build_nested_query
+
     # Escape ampersands, brackets and quotes to their HTML/XML entities.
     def escape_html(string)
       string.to_s.gsub("&", "&amp;").
@@ -288,11 +310,39 @@ module Rack
     # Usually, Rack::Request#POST takes care of calling this.
 
     module Multipart
+      class UploadedFile
+        # The filename, *not* including the path, of the "uploaded" file
+        attr_reader :original_filename
+
+        # The content type of the "uploaded" file
+        attr_accessor :content_type
+
+        def initialize(path, content_type = "text/plain", binary = false)
+          raise "#{path} file does not exist" unless ::File.exist?(path)
+          @content_type = content_type
+          @original_filename = ::File.basename(path)
+          @tempfile = Tempfile.new(@original_filename)
+          @tempfile.set_encoding(Encoding::BINARY) if @tempfile.respond_to?(:set_encoding)
+          @tempfile.binmode if binary
+          FileUtils.copy_file(path, @tempfile.path)
+        end
+
+        def path
+          @tempfile.path
+        end
+        alias_method :local_path, :path
+
+        def method_missing(method_name, *args, &block) #:nodoc:
+          @tempfile.__send__(method_name, *args, &block)
+        end
+      end
+
       EOL = "\r\n"
+      MULTIPART_BOUNDARY = "AaB03x"
 
       def self.parse_multipart(env)
         unless env['CONTENT_TYPE'] =~
-            %r|\Amultipart/form-data.*boundary=\"?([^\";,]+)\"?|n
+            %r|\Amultipart/.*boundary=\"?([^\";,]+)\"?|n
           nil
         else
           boundary = "--#{$1}"
@@ -301,13 +351,16 @@ module Rack
           buf = ""
           content_length = env['CONTENT_LENGTH'].to_i
           input = env['rack.input']
+          input.rewind
 
-          boundary_size = boundary.size + EOL.size
+          boundary_size = Utils.bytesize(boundary) + EOL.size
           bufsize = 16384
 
           content_length -= boundary_size
 
-          status = input.read(boundary_size)
+          read_buffer = ''
+
+          status = input.read(boundary_size, read_buffer)
           raise EOFError, "bad content body"  unless status == boundary + EOL
 
           rx = /(?:#{EOL})?#{Regexp.quote boundary}(#{EOL}|--)/n
@@ -318,15 +371,15 @@ module Rack
             filename = content_type = name = nil
 
             until head && buf =~ rx
-              if !head && i = buf.index("\r\n\r\n")
+              if !head && i = buf.index(EOL+EOL)
                 head = buf.slice!(0, i+2) # First \r\n
                 buf.slice!(0, 2)          # Second \r\n
 
                 filename = head[/Content-Disposition:.* filename="?([^\";]*)"?/ni, 1]
-                content_type = head[/Content-Type: (.*)\r\n/ni, 1]
-                name = head[/Content-Disposition:.* name="?([^\";]*)"?/ni, 1]
+                content_type = head[/Content-Type: (.*)#{EOL}/ni, 1]
+                name = head[/Content-Disposition:.*\s+name="?([^\";]*)"?/ni, 1] || head[/Content-ID:\s*([^#{EOL}]*)/ni, 1]
 
-                if filename
+                if content_type || filename
                   body = Tempfile.new("RackMultipart")
                   body.binmode  if body.respond_to?(:binmode)
                 end
@@ -339,7 +392,7 @@ module Rack
                 body << buf.slice!(0, buf.size - (boundary_size+4))
               end
 
-              c = input.read(bufsize < content_length ? bufsize : content_length)
+              c = input.read(bufsize < content_length ? bufsize : content_length, read_buffer)
               raise EOFError, "bad content body"  if c.nil? || c.empty?
               buf << c
               content_length -= c.size
@@ -368,6 +421,12 @@ module Rack
 
               data = {:filename => filename, :type => content_type,
                       :name => name, :tempfile => body, :head => head}
+            elsif !filename && content_type
+              body.rewind
+
+              # Generic multipart cases, not coming from a form
+              data = {:type => content_type,
+                      :name => name, :tempfile => body, :head => head}
             else
               data = body
             end
@@ -377,16 +436,81 @@ module Rack
             break  if buf.empty? || content_length == -1
           }
 
-          begin
-            input.rewind if input.respond_to?(:rewind)
-          rescue Errno::ESPIPE
-            # Handles exceptions raised by input streams that cannot be rewound
-            # such as when using plain CGI under Apache
-          end
+          input.rewind
 
           params
         end
       end
+
+      def self.build_multipart(params, first = true)
+        if first
+          unless params.is_a?(Hash)
+            raise ArgumentError, "value must be a Hash"
+          end
+
+          multipart = false
+          query = lambda { |value|
+            case value
+            when Array
+              value.each(&query)
+            when Hash
+              value.values.each(&query)
+            when UploadedFile
+              multipart = true
+            end
+          }
+          params.values.each(&query)
+          return nil unless multipart
+        end
+
+        flattened_params = Hash.new
+
+        params.each do |key, value|
+          k = first ? key.to_s : "[#{key}]"
+
+          case value
+          when Array
+            value.map { |v|
+              build_multipart(v, false).each { |subkey, subvalue|
+                flattened_params["#{k}[]#{subkey}"] = subvalue
+              }
+            }
+          when Hash
+            build_multipart(value, false).each { |subkey, subvalue|
+              flattened_params[k + subkey] = subvalue
+            }
+          else
+            flattened_params[k] = value
+          end
+        end
+
+        if first
+          flattened_params.map { |name, file|
+            if file.respond_to?(:original_filename)
+              ::File.open(file.path, "rb") do |f|
+                f.set_encoding(Encoding::BINARY) if f.respond_to?(:set_encoding)
+<<-EOF
+--#{MULTIPART_BOUNDARY}\r
+Content-Disposition: form-data; name="#{name}"; filename="#{Utils.escape(file.original_filename)}"\r
+Content-Type: #{file.content_type}\r
+Content-Length: #{::File.stat(file.path).size}\r
+\r
+#{f.read}\r
+EOF
+              end
+            else
+<<-EOF
+--#{MULTIPART_BOUNDARY}\r
+Content-Disposition: form-data; name="#{name}"\r
+\r
+#{file}\r
+EOF
+            end
+          }.join + "--#{MULTIPART_BOUNDARY}--\r"
+        else
+          flattened_params
+        end
+      end
     end
   end
 end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-test/rack/mock_session.rb b/actionpack/lib/action_dispatch/vendor/rack-test/rack/mock_session.rb
new file mode 100644
index 0000000000..eba6226538
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-test/rack/mock_session.rb
@@ -0,0 +1,50 @@
+module Rack
+
+  class MockSession
+    attr_writer :cookie_jar
+    attr_reader :last_response
+
+    def initialize(app, default_host = Rack::Test::DEFAULT_HOST)
+      @app = app
+      @default_host = default_host
+    end
+
+    def clear_cookies
+      @cookie_jar = Rack::Test::CookieJar.new([], @default_host)
+    end
+
+    def set_cookie(cookie, uri = nil)
+      cookie_jar.merge(cookie, uri)
+    end
+
+    def request(uri, env)
+      env["HTTP_COOKIE"] ||= cookie_jar.for(uri)
+      @last_request = Rack::Request.new(env)
+      status, headers, body = @app.call(@last_request.env)
+      @last_response = MockResponse.new(status, headers, body, env["rack.errors"].flush)
+      cookie_jar.merge(last_response.headers["Set-Cookie"], uri)
+
+      @last_response
+    end
+
+    # Return the last request issued in the session. Raises an error if no
+    # requests have been sent yet.
+    def last_request
+      raise Rack::Test::Error.new("No request yet. Request a page first.") unless @last_request
+      @last_request
+    end
+
+    # Return the last response received in the session. Raises an error if
+    # no requests have been sent yet.
+    def last_response
+      raise Rack::Test::Error.new("No response yet. Request a page first.") unless @last_response
+      @last_response
+    end
+
+    def cookie_jar
+      @cookie_jar ||= Rack::Test::CookieJar.new([], @default_host)
+    end
+
+  end
+
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-test/rack/test.rb b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test.rb
new file mode 100644
index 0000000000..70384b1d76
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test.rb
@@ -0,0 +1,239 @@
+unless $LOAD_PATH.include?(File.expand_path(File.dirname(__FILE__) + "/.."))
+  $LOAD_PATH.unshift(File.expand_path(File.dirname(__FILE__) + "/.."))
+end
+
+require "uri"
+require "rack"
+require "rack/mock_session"
+require "rack/test/cookie_jar"
+require "rack/test/mock_digest_request"
+require "rack/test/utils"
+require "rack/test/methods"
+require "rack/test/uploaded_file"
+
+module Rack
+  module Test
+
+    VERSION = "0.3.0"
+
+    DEFAULT_HOST = "example.org"
+    MULTIPART_BOUNDARY = "----------XnJLe9ZIbbGUYtzPQJ16u1"
+
+    # The common base class for exceptions raised by Rack::Test
+    class Error < StandardError; end
+
+    class Session
+      extend Forwardable
+      include Rack::Test::Utils
+
+      def_delegators :@rack_mock_session, :clear_cookies, :set_cookie, :last_response, :last_request
+
+      # Initialize a new session for the given Rack app
+      def initialize(app, default_host = DEFAULT_HOST)
+        @headers = {}
+        @default_host = default_host
+        @rack_mock_session = Rack::MockSession.new(app, default_host)
+      end
+
+      # Issue a GET request for the given URI with the given params and Rack
+      # environment. Stores the issues request object in #last_request and
+      # the app's response in #last_response. Yield #last_response to a block
+      # if given.
+      #
+      # Example:
+      #   get "/"
+      def get(uri, params = {}, env = {}, &block)
+        env = env_for(uri, env.merge(:method => "GET", :params => params))
+        process_request(uri, env, &block)
+      end
+
+      # Issue a POST request for the given URI. See #get
+      #
+      # Example:
+      #   post "/signup", "name" => "Bryan"
+      def post(uri, params = {}, env = {}, &block)
+        env = env_for(uri, env.merge(:method => "POST", :params => params))
+        process_request(uri, env, &block)
+      end
+
+      # Issue a PUT request for the given URI. See #get
+      #
+      # Example:
+      #   put "/"
+      def put(uri, params = {}, env = {}, &block)
+        env = env_for(uri, env.merge(:method => "PUT", :params => params))
+        process_request(uri, env, &block)
+      end
+
+      # Issue a DELETE request for the given URI. See #get
+      #
+      # Example:
+      #   delete "/"
+      def delete(uri, params = {}, env = {}, &block)
+        env = env_for(uri, env.merge(:method => "DELETE", :params => params))
+        process_request(uri, env, &block)
+      end
+
+      # Issue a HEAD request for the given URI. See #get
+      #
+      # Example:
+      #   head "/"
+      def head(uri, params = {}, env = {}, &block)
+        env = env_for(uri, env.merge(:method => "HEAD", :params => params))
+        process_request(uri, env, &block)
+      end
+
+      # Issue a request to the Rack app for the given URI and optional Rack
+      # environment. Stores the issues request object in #last_request and
+      # the app's response in #last_response. Yield #last_response to a block
+      # if given.
+      #
+      # Example:
+      #   request "/"
+      def request(uri, env = {}, &block)
+        env = env_for(uri, env)
+        process_request(uri, env, &block)
+      end
+
+      # Set a header to be included on all subsequent requests through the
+      # session. Use a value of nil to remove a previously configured header.
+      #
+      # Example:
+      #   header "User-Agent", "Firefox"
+      def header(name, value)
+        if value.nil?
+          @headers.delete(name)
+        else
+          @headers[name] = value
+        end
+      end
+
+      # Set the username and password for HTTP Basic authorization, to be
+      # included in subsequent requests in the HTTP_AUTHORIZATION header.
+      #
+      # Example:
+      #   basic_authorize "bryan", "secret"
+      def basic_authorize(username, password)
+        encoded_login = ["#{username}:#{password}"].pack("m*")
+        header('HTTP_AUTHORIZATION', "Basic #{encoded_login}")
+      end
+
+      alias_method :authorize, :basic_authorize
+
+      def digest_authorize(username, password)
+        @digest_username = username
+        @digest_password = password
+      end
+
+      # Rack::Test will not follow any redirects automatically. This method
+      # will follow the redirect returned in the last response. If the last
+      # response was not a redirect, an error will be raised.
+      def follow_redirect!
+        unless last_response.redirect?
+          raise Error.new("Last response was not a redirect. Cannot follow_redirect!")
+        end
+
+        get(last_response["Location"])
+      end
+
+    private
+
+      def env_for(path, env)
+        uri = URI.parse(path)
+        uri.host ||= @default_host
+
+        env = default_env.merge(env)
+
+        env.update("HTTPS" => "on")                if URI::HTTPS === uri
+        env["X-Requested-With"] = "XMLHttpRequest" if env[:xhr]
+
+        if (env[:method] == "POST" || env["REQUEST_METHOD"] == "POST") && !env.has_key?(:input)
+          env["CONTENT_TYPE"] = "application/x-www-form-urlencoded"
+
+          multipart = (Hash === env[:params]) &&
+            env[:params].any? { |_, v| UploadedFile === v }
+
+          if multipart
+            env[:input] = multipart_body(env.delete(:params))
+            env["CONTENT_LENGTH"] ||= env[:input].length.to_s
+            env["CONTENT_TYPE"] = "multipart/form-data; boundary=#{MULTIPART_BOUNDARY}"
+          else
+            env[:input] = params_to_string(env.delete(:params))
+          end
+        end
+
+        params = env[:params] || {}
+        params.update(parse_query(uri.query))
+
+        uri.query = requestify(params)
+
+        if env.has_key?(:cookie)
+          set_cookie(env.delete(:cookie), uri)
+        end
+
+        Rack::MockRequest.env_for(uri.to_s, env)
+      end
+
+      def process_request(uri, env)
+        uri = URI.parse(uri)
+        uri.host ||= @default_host
+
+        @rack_mock_session.request(uri, env)
+
+        if retry_with_digest_auth?(env)
+          auth_env = env.merge({
+            "HTTP_AUTHORIZATION"          => digest_auth_header,
+            "rack-test.digest_auth_retry" => true
+          })
+          auth_env.delete('rack.request')
+          process_request(uri.path, auth_env)
+        else
+          yield last_response if block_given?
+
+          last_response
+        end
+      end
+
+      def digest_auth_header
+        challenge = last_response["WWW-Authenticate"].split(" ", 2).last
+        params = Rack::Auth::Digest::Params.parse(challenge)
+
+        params.merge!({
+          "username"  => @digest_username,
+          "nc"        => "00000001",
+          "cnonce"    => "nonsensenonce",
+          "uri"       => last_request.path_info,
+          "method"    => last_request.env["REQUEST_METHOD"],
+        })
+
+        params["response"] = MockDigestRequest.new(params).response(@digest_password)
+
+        "Digest #{params}"
+      end
+
+      def retry_with_digest_auth?(env)
+        last_response.status == 401 &&
+        digest_auth_configured? &&
+        !env["rack-test.digest_auth_retry"]
+      end
+
+      def digest_auth_configured?
+        @digest_username
+      end
+
+      def default_env
+        { "rack.test" => true, "REMOTE_ADDR" => "127.0.0.1" }.merge(@headers)
+      end
+
+      def params_to_string(params)
+        case params
+        when Hash then requestify(params)
+        when nil  then ""
+        else params
+        end
+      end
+
+    end
+
+  end
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/cookie_jar.rb b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/cookie_jar.rb
new file mode 100644
index 0000000000..d58c914c9b
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/cookie_jar.rb
@@ -0,0 +1,169 @@
+require "uri"
+module Rack
+  module Test
+
+    class Cookie
+      include Rack::Utils
+
+      # :api: private
+      attr_reader :name, :value
+
+      # :api: private
+      def initialize(raw, uri = nil, default_host = DEFAULT_HOST)
+        @default_host = default_host
+        uri ||= default_uri
+
+        # separate the name / value pair from the cookie options
+        @name_value_raw, options = raw.split(/[;,] */n, 2)
+
+        @name, @value = parse_query(@name_value_raw, ';').to_a.first
+        @options = parse_query(options, ';')
+
+        @options["domain"]  ||= (uri.host || default_host)
+        @options["path"]    ||= uri.path.sub(/\/[^\/]*\Z/, "")
+      end
+
+      def replaces?(other)
+        [name.downcase, domain, path] == [other.name.downcase, other.domain, other.path]
+      end
+
+      # :api: private
+      def raw
+        @name_value_raw
+      end
+
+      # :api: private
+      def empty?
+        @value.nil? || @value.empty?
+      end
+
+      # :api: private
+      def domain
+        @options["domain"]
+      end
+
+      def secure?
+        @options.has_key?("secure")
+      end
+
+      # :api: private
+      def path
+        @options["path"].strip || "/"
+      end
+
+      # :api: private
+      def expires
+        Time.parse(@options["expires"]) if @options["expires"]
+      end
+
+      # :api: private
+      def expired?
+        expires && expires < Time.now
+      end
+
+      # :api: private
+      def valid?(uri)
+        uri ||= default_uri
+
+        if uri.host.nil?
+          uri.host = @default_host
+        end
+
+        (!secure? || (secure? && uri.scheme == "https")) &&
+        uri.host =~ Regexp.new("#{Regexp.escape(domain)}$", Regexp::IGNORECASE) &&
+        uri.path =~ Regexp.new("^#{Regexp.escape(path)}")
+      end
+
+      # :api: private
+      def matches?(uri)
+        ! expired? && valid?(uri)
+      end
+
+      # :api: private
+      def <=>(other)
+        # Orders the cookies from least specific to most
+        [name, path, domain.reverse] <=> [other.name, other.path, other.domain.reverse]
+      end
+
+    protected
+
+      def default_uri
+        URI.parse("//" + @default_host + "/")
+      end
+
+    end
+
+    class CookieJar
+
+      # :api: private
+      def initialize(cookies = [], default_host = DEFAULT_HOST)
+        @default_host = default_host
+        @cookies = cookies
+        @cookies.sort!
+      end
+
+      def [](name)
+        cookies = hash_for(nil)
+        # TODO: Should be case insensitive
+        cookies[name] && cookies[name].value
+      end
+
+      def []=(name, value)
+        # TODO: needs proper escaping
+        merge("#{name}=#{value}")
+      end
+
+      def merge(raw_cookies, uri = nil)
+        return unless raw_cookies
+
+        raw_cookies.each_line do |raw_cookie|
+          cookie = Cookie.new(raw_cookie, uri, @default_host)
+          self << cookie if cookie.valid?(uri)
+        end
+      end
+
+      def <<(new_cookie)
+        @cookies.reject! do |existing_cookie|
+          new_cookie.replaces?(existing_cookie)
+        end
+
+        @cookies << new_cookie
+        @cookies.sort!
+      end
+
+      # :api: private
+      def for(uri)
+        hash_for(uri).values.map { |c| c.raw }.join(';')
+      end
+
+      def to_hash
+        cookies = {}
+
+        hash_for(nil).each do |name, cookie|
+          cookies[name] = cookie.value
+        end
+
+        return cookies
+      end
+
+    protected
+
+      def hash_for(uri = nil)
+        cookies = {}
+
+        # The cookies are sorted by most specific first. So, we loop through
+        # all the cookies in order and add it to a hash by cookie name if
+        # the cookie can be sent to the current URI. It's added to the hash
+        # so that when we are done, the cookies will be unique by name and
+        # we'll have grabbed the most specific to the URI.
+        @cookies.each do |cookie|
+          cookies[cookie.name] = cookie if cookie.matches?(uri)
+        end
+
+        return cookies
+      end
+
+    end
+
+  end
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/methods.rb b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/methods.rb
new file mode 100644
index 0000000000..a191fa23d8
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/methods.rb
@@ -0,0 +1,45 @@
+require "forwardable"
+
+module Rack
+  module Test
+    module Methods
+      extend Forwardable
+
+      def rack_test_session
+        @_rack_test_session ||= Rack::Test::Session.new(app)
+      end
+
+      def rack_mock_session
+        @_rack_mock_session ||= Rack::MockSession.new(app)
+      end
+
+      METHODS = [
+        :request,
+
+        # HTTP verbs
+        :get,
+        :post,
+        :put,
+        :delete,
+        :head,
+
+        # Redirects
+        :follow_redirect!,
+
+        # Header-related features
+        :header,
+        :set_cookie,
+        :clear_cookies,
+        :authorize,
+        :basic_authorize,
+        :digest_authorize,
+
+        # Expose the last request and response
+        :last_response,
+        :last_request
+      ]
+
+      def_delegators :rack_test_session, *METHODS
+    end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/mock_digest_request.rb b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/mock_digest_request.rb
new file mode 100644
index 0000000000..81c398ba51
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/mock_digest_request.rb
@@ -0,0 +1,27 @@
+module Rack
+  module Test
+
+    class MockDigestRequest
+      def initialize(params)
+        @params = params
+      end
+
+      def method_missing(sym)
+        if @params.has_key? k = sym.to_s
+          return @params[k]
+        end
+
+        super
+      end
+
+      def method
+        @params['method']
+      end
+
+      def response(password)
+        Rack::Auth::Digest::MD5.new(nil).send :digest, self, password
+      end
+    end
+
+  end
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/uploaded_file.rb b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/uploaded_file.rb
new file mode 100644
index 0000000000..239302fbe4
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/uploaded_file.rb
@@ -0,0 +1,36 @@
+require "tempfile"
+
+module Rack
+  module Test
+
+    class UploadedFile
+      # The filename, *not* including the path, of the "uploaded" file
+      attr_reader :original_filename
+
+      # The content type of the "uploaded" file
+      attr_accessor :content_type
+
+      def initialize(path, content_type = "text/plain", binary = false)
+        raise "#{path} file does not exist" unless ::File.exist?(path)
+        @content_type = content_type
+        @original_filename = ::File.basename(path)
+        @tempfile = Tempfile.new(@original_filename)
+        @tempfile.set_encoding(Encoding::BINARY) if @tempfile.respond_to?(:set_encoding)
+        @tempfile.binmode if binary
+        FileUtils.copy_file(path, @tempfile.path)
+      end
+
+      def path
+        @tempfile.path
+      end
+
+      alias_method :local_path, :path
+
+      def method_missing(method_name, *args, &block) #:nodoc:
+        @tempfile.__send__(method_name, *args, &block)
+      end
+
+    end
+
+  end
+end
diff --git a/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/utils.rb b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/utils.rb
new file mode 100644
index 0000000000..d25b849709
--- /dev/null
+++ b/actionpack/lib/action_dispatch/vendor/rack-test/rack/test/utils.rb
@@ -0,0 +1,75 @@
+module Rack
+  module Test
+
+    module Utils
+      include Rack::Utils
+
+      def requestify(value, prefix = nil)
+        case value
+        when Array
+          value.map do |v|
+            requestify(v, "#{prefix}[]")
+          end.join("&")
+        when Hash
+          value.map do |k, v|
+            requestify(v, prefix ? "#{prefix}[#{escape(k)}]" : escape(k))
+          end.join("&")
+        else
+          "#{prefix}=#{escape(value)}"
+        end
+      end
+
+      module_function :requestify
+
+      def multipart_requestify(params, first=true)
+        p = Hash.new
+
+        params.each do |key, value|
+          k = first ? key.to_s : "[#{key}]"
+
+          if Hash === value
+            multipart_requestify(value, false).each do |subkey, subvalue|
+              p[k + subkey] = subvalue
+            end
+          else
+            p[k] = value
+          end
+        end
+
+        return p
+      end
+
+      module_function :multipart_requestify
+
+      def multipart_body(params)
+        multipart_requestify(params).map do |key, value|
+          if value.respond_to?(:original_filename)
+            ::File.open(value.path, "rb") do |f|
+              f.set_encoding(Encoding::BINARY) if f.respond_to?(:set_encoding)
+
+              <<-EOF
+--#{MULTIPART_BOUNDARY}\r
+Content-Disposition: form-data; name="#{key}"; filename="#{escape(value.original_filename)}"\r
+Content-Type: #{value.content_type}\r
+Content-Length: #{::File.stat(value.path).size}\r
+\r
+#{f.read}\r
+EOF
+            end
+          else
+<<-EOF
+--#{MULTIPART_BOUNDARY}\r
+Content-Disposition: form-data; name="#{key}"\r
+\r
+#{value}\r
+EOF
+          end
+        end.join("")+"--#{MULTIPART_BOUNDARY}--\r"
+      end
+
+      module_function :multipart_body
+
+    end
+
+  end
+end
diff --git a/actionpack/lib/action_view.rb b/actionpack/lib/action_view.rb
index e604c2a581..94138097e3 100644
--- a/actionpack/lib/action_view.rb
+++ b/actionpack/lib/action_view.rb
@@ -21,15 +21,10 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #++
 
-begin
-  require 'active_support'
-rescue LoadError
-  activesupport_path = "#{File.dirname(__FILE__)}/../../activesupport/lib"
-  if File.directory?(activesupport_path)
-    $:.unshift activesupport_path
-    require 'active_support'
-  end
-end
+activesupport_path = "#{File.dirname(__FILE__)}/../../activesupport/lib"
+$:.unshift activesupport_path if File.directory?(activesupport_path)
+require 'active_support'
+require 'active_support/core_ext/class/attribute_accessors'
 
 require File.join(File.dirname(__FILE__), "action_pack")
 
diff --git a/actionpack/lib/action_view/base.rb b/actionpack/lib/action_view/base.rb
index efed19a21d..4ab568b44c 100644
--- a/actionpack/lib/action_view/base.rb
+++ b/actionpack/lib/action_view/base.rb
@@ -1,3 +1,6 @@
+require 'active_support/core_ext/module/attr_internal'
+require 'active_support/core_ext/module/delegation'
+
 module ActionView #:nodoc:
   class ActionViewError < StandardError #:nodoc:
   end
@@ -191,12 +194,14 @@ module ActionView #:nodoc:
       ActionController::Base.allow_concurrency || (cache_template_loading.nil? ? !ActiveSupport::Dependencies.load? : cache_template_loading)
     end
 
-    attr_internal :request
+    attr_internal :request, :layout
 
     delegate :controller_path, :to => :controller, :allow_nil => true
 
     delegate :request_forgery_protection_token, :template, :params, :session, :cookies, :response, :headers,
-             :flash, :logger, :action_name, :controller_name, :to => :controller
+             :flash, :action_name, :controller_name, :to => :controller
+
+    delegate :logger, :to => :controller, :allow_nil => true
 
     delegate :find_by_parts, :to => :view_paths
 
@@ -264,15 +269,16 @@ module ActionView #:nodoc:
       nil
     end
 
-    private
-      # Evaluates the local assigns and controller ivars, pushes them to the view.
-      def _evaluate_assigns_and_ivars #:nodoc:
-        unless @assigns_added
-          @assigns.each { |key, value| instance_variable_set("@#{key}", value) }
-          _copy_ivars_from_controller
-          @assigns_added = true
-        end
+    # Evaluates the local assigns and controller ivars, pushes them to the view.
+    def _evaluate_assigns_and_ivars #:nodoc:
+      unless @assigns_added
+        @assigns.each { |key, value| instance_variable_set("@#{key}", value) }
+        _copy_ivars_from_controller
+        @assigns_added = true
       end
+    end
+
+    private
 
       def _copy_ivars_from_controller #:nodoc:
         if @controller
@@ -283,8 +289,11 @@ module ActionView #:nodoc:
       end
 
       def _set_controller_content_type(content_type) #:nodoc:
-        if controller.respond_to?(:response)
-          controller.response.content_type ||= content_type
+        # TODO: Remove this method when new base is switched
+        unless defined?(ActionController::Http)
+          if controller.respond_to?(:response)
+            controller.response.content_type ||= content_type
+          end
         end
       end
   end
diff --git a/actionpack/lib/action_view/helpers/active_record_helper.rb b/actionpack/lib/action_view/helpers/active_record_helper.rb
index 7c0dfdab10..b4b9f6e34b 100644
--- a/actionpack/lib/action_view/helpers/active_record_helper.rb
+++ b/actionpack/lib/action_view/helpers/active_record_helper.rb
@@ -1,5 +1,6 @@
 require 'cgi'
 require 'action_view/helpers/form_helper'
+require 'active_support/core_ext/class/attribute_accessors'
 
 module ActionView
   class Base
diff --git a/actionpack/lib/action_view/helpers/capture_helper.rb b/actionpack/lib/action_view/helpers/capture_helper.rb
index 9e39536653..b4197479a0 100644
--- a/actionpack/lib/action_view/helpers/capture_helper.rb
+++ b/actionpack/lib/action_view/helpers/capture_helper.rb
@@ -124,7 +124,11 @@ module ActionView
 
       # Use an alternate output buffer for the duration of the block.
       # Defaults to a new empty string.
-      def with_output_buffer(buf = '') #:nodoc:
+      def with_output_buffer(buf = nil) #:nodoc:
+        unless buf
+          buf = ''
+          buf.force_encoding(output_buffer.encoding) if buf.respond_to?(:force_encoding)
+        end
         self.output_buffer, old_buffer = buf, output_buffer
         yield
         output_buffer
@@ -134,9 +138,12 @@ module ActionView
 
       # Add the output buffer to the response body and start a new one.
       def flush_output_buffer #:nodoc:
-        if output_buffer && output_buffer != ''
+        if output_buffer && !output_buffer.empty?
           response.body_parts << output_buffer
-          self.output_buffer = ''
+          new = ''
+          new.force_encoding(output_buffer.encoding) if new.respond_to?(:force_encoding)
+          self.output_buffer = new
+          nil
         end
       end
     end
diff --git a/actionpack/lib/action_view/helpers/form_helper.rb b/actionpack/lib/action_view/helpers/form_helper.rb
index a59829b23f..beef661a37 100644
--- a/actionpack/lib/action_view/helpers/form_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_helper.rb
@@ -2,6 +2,7 @@ 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'
 
 module ActionView
   module Helpers
@@ -1039,8 +1040,8 @@ module ActionView
     end
   end
 
-  class Base
-    cattr_accessor :default_form_builder
-    self.default_form_builder = ::ActionView::Helpers::FormBuilder
+  class << Base
+    attr_accessor :default_form_builder
   end
-end
\ No newline at end of file
+  Base.default_form_builder = ::ActionView::Helpers::FormBuilder
+end
diff --git a/actionpack/lib/action_view/helpers/form_options_helper.rb b/actionpack/lib/action_view/helpers/form_options_helper.rb
index 6b385ef77d..6adbab175f 100644
--- a/actionpack/lib/action_view/helpers/form_options_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_options_helper.rb
@@ -230,6 +230,8 @@ module ActionView
       #
       # NOTE: Only the option tags are returned, you have to wrap this call in a regular HTML select tag.
       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)
 
diff --git a/actionpack/lib/action_view/helpers/number_helper.rb b/actionpack/lib/action_view/helpers/number_helper.rb
index dea958deaf..999d5b34fc 100644
--- a/actionpack/lib/action_view/helpers/number_helper.rb
+++ b/actionpack/lib/action_view/helpers/number_helper.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/float/rounding'
+
 module ActionView
   module Helpers #:nodoc:
     # Provides methods for converting numbers into formatted strings.
@@ -246,6 +248,11 @@ module ActionView
       #  number_to_human_size(483989, :precision => 0)                      # => 473 KB
       #  number_to_human_size(1234567, :precision => 2, :separator => ',')  # => 1,18 MB
       #
+      # Zeros after the decimal point are always stripped out, regardless of the
+      # specified precision:
+      #  helper.number_to_human_size(1234567890123, :precision => 5)        # => "1.12283 TB"
+      #  helper.number_to_human_size(524288000, :precision=>5)              # => "500 MB"
+      #
       # You can still use <tt>number_to_human_size</tt> with the old API that accepts the
       # +precision+ as its optional second parameter:
       #  number_to_human_size(1234567, 2)    # => 1.18 MB
@@ -291,7 +298,7 @@ module ActionView
               :precision => precision,
               :separator => separator,
               :delimiter => delimiter
-            ).sub(/(\d)(#{escaped_separator}[1-9]*)?0+\z/, '\1\2').sub(/#{escaped_separator}\z/, '')
+            ).sub(/(#{escaped_separator})(\d*[1-9])?0+\z/, '\1\2').sub(/#{escaped_separator}\z/, '')
             storage_units_format.gsub(/%n/, formatted_number).gsub(/%u/, unit)
           rescue
             number
diff --git a/actionpack/lib/action_view/helpers/prototype_helper.rb b/actionpack/lib/action_view/helpers/prototype_helper.rb
index 6bad11e354..c0f5df3468 100644
--- a/actionpack/lib/action_view/helpers/prototype_helper.rb
+++ b/actionpack/lib/action_view/helpers/prototype_helper.rb
@@ -1,5 +1,6 @@
 require 'set'
 require 'active_support/json'
+require 'active_support/core_ext/object/extending'
 
 module ActionView
   module Helpers
@@ -572,6 +573,7 @@ module ActionView
       # #include_helpers_from_context has nothing to overwrite.
       class JavaScriptGenerator #:nodoc:
         def initialize(context, &block) #:nodoc:
+          context._evaluate_assigns_and_ivars
           @context, @lines = context, []
           include_helpers_from_context
           @context.with_output_buffer(@lines) do
@@ -686,7 +688,7 @@ module ActionView
           # Returns an object whose <tt>to_json</tt> evaluates to +code+. Use this to pass a literal JavaScript
           # expression as an argument to another JavaScriptGenerator method.
           def literal(code)
-            ActiveSupport::JSON::Variable.new(code.to_s)
+            ::ActiveSupport::JSON::Variable.new(code.to_s)
           end
 
           # Returns a collection reference by finding it through a CSS +pattern+ in the DOM. This collection can then be
@@ -973,7 +975,7 @@ module ActionView
             def loop_on_multiple_args(method, ids)
               record(ids.size>1 ?
                 "#{javascript_object_for(ids)}.each(#{method})" :
-                "#{method}(#{ids.first.to_json})")
+                "#{method}(#{javascript_object_for(ids.first)})")
             end
 
             def page
@@ -997,7 +999,7 @@ module ActionView
             end
 
             def javascript_object_for(object)
-              object.respond_to?(:to_json) ? object.to_json : object.inspect
+              ::ActiveSupport::JSON.encode(object)
             end
 
             def arguments_for_call(arguments, block = nil)
@@ -1139,7 +1141,7 @@ module ActionView
     class JavaScriptElementProxy < JavaScriptProxy #:nodoc:
       def initialize(generator, id)
         @id = id
-        super(generator, "$(#{id.to_json})")
+        super(generator, "$(#{::ActiveSupport::JSON.encode(id)})")
       end
 
       # Allows access of element attributes through +attribute+. Examples:
@@ -1180,11 +1182,11 @@ module ActionView
 
       # The JSON Encoder calls this to check for the +to_json+ method
       # Since it's a blank slate object, I suppose it responds to anything.
-      def respond_to?(method)
+      def respond_to?(*)
         true
       end
 
-      def to_json(options = nil)
+      def rails_to_json(*)
         @variable
       end
 
@@ -1211,7 +1213,7 @@ module ActionView
           enumerate :eachSlice, :variable => variable, :method_args => [number], :yield_args => %w(value index), :return => true, &block
         else
           add_variable_assignment!(variable)
-          append_enumerable_function!("eachSlice(#{number.to_json});")
+          append_enumerable_function!("eachSlice(#{::ActiveSupport::JSON.encode(number)});")
         end
       end
 
@@ -1232,7 +1234,7 @@ module ActionView
 
       def pluck(variable, property)
         add_variable_assignment!(variable)
-        append_enumerable_function!("pluck(#{property.to_json});")
+        append_enumerable_function!("pluck(#{::ActiveSupport::JSON.encode(property)});")
       end
 
       def zip(variable, *arguments, &block)
@@ -1296,7 +1298,7 @@ module ActionView
 
     class JavaScriptElementCollectionProxy < JavaScriptCollectionProxy #:nodoc:\
       def initialize(generator, pattern)
-        super(generator, "$$(#{pattern.to_json})")
+        super(generator, "$$(#{::ActiveSupport::JSON.encode(pattern)})")
       end
     end
   end
diff --git a/actionpack/lib/action_view/helpers/scriptaculous_helper.rb b/actionpack/lib/action_view/helpers/scriptaculous_helper.rb
index e16935ea87..04af2781d7 100644
--- a/actionpack/lib/action_view/helpers/scriptaculous_helper.rb
+++ b/actionpack/lib/action_view/helpers/scriptaculous_helper.rb
@@ -43,7 +43,7 @@ module ActionView
       # You can change the behaviour with various options, see
       # http://script.aculo.us for more documentation.
       def visual_effect(name, element_id = false, js_options = {})
-        element = element_id ? element_id.to_json : "element"
+        element = element_id ? ActiveSupport::JSON.encode(element_id) : "element"
         
         js_options[:queue] = if js_options[:queue].is_a?(Hash)
           '{' + js_options[:queue].map {|k, v| k == :limit ? "#{k}:#{v}" : "#{k}:'#{v}'" }.join(',') + '}'
@@ -138,7 +138,7 @@ module ActionView
       end
       
       def sortable_element_js(element_id, options = {}) #:nodoc:
-        options[:with]     ||= "Sortable.serialize(#{element_id.to_json})"
+        options[:with]     ||= "Sortable.serialize(#{ActiveSupport::JSON.encode(element_id)})"
         options[:onUpdate] ||= "function(){" + remote_function(options) + "}"
         options.delete_if { |key, value| PrototypeHelper::AJAX_OPTIONS.include?(key) }
   
@@ -149,7 +149,7 @@ module ActionView
         options[:containment] = array_or_string_for_javascript(options[:containment]) if options[:containment]
         options[:only] = array_or_string_for_javascript(options[:only]) if options[:only]
   
-        %(Sortable.create(#{element_id.to_json}, #{options_for_javascript(options)});)
+        %(Sortable.create(#{ActiveSupport::JSON.encode(element_id)}, #{options_for_javascript(options)});)
       end
 
       # Makes the element with the DOM ID specified by +element_id+ draggable.
@@ -164,7 +164,7 @@ module ActionView
       end
       
       def draggable_element_js(element_id, options = {}) #:nodoc:
-        %(new Draggable(#{element_id.to_json}, #{options_for_javascript(options)});)
+        %(new Draggable(#{ActiveSupport::JSON.encode(element_id)}, #{options_for_javascript(options)});)
       end
 
       # Makes the element with the DOM ID specified by +element_id+ receive
@@ -219,7 +219,7 @@ module ActionView
         # Confirmation happens during the onDrop callback, so it can be removed from the options
         options.delete(:confirm) if options[:confirm]
 
-        %(Droppables.add(#{element_id.to_json}, #{options_for_javascript(options)});)
+        %(Droppables.add(#{ActiveSupport::JSON.encode(element_id)}, #{options_for_javascript(options)});)
       end
     end
   end
diff --git a/actionpack/lib/action_view/helpers/tag_helper.rb b/actionpack/lib/action_view/helpers/tag_helper.rb
index af8c4d5e21..66d7592874 100644
--- a/actionpack/lib/action_view/helpers/tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/tag_helper.rb
@@ -9,7 +9,7 @@ module ActionView
       include ERB::Util
 
       BOOLEAN_ATTRIBUTES = %w(disabled readonly multiple checked).to_set
-      BOOLEAN_ATTRIBUTES.merge(BOOLEAN_ATTRIBUTES.map(&:to_sym))
+      BOOLEAN_ATTRIBUTES.merge(BOOLEAN_ATTRIBUTES.map {|attr| attr.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
diff --git a/actionpack/lib/action_view/helpers/text_helper.rb b/actionpack/lib/action_view/helpers/text_helper.rb
index 573b99b96e..ad0733a7e1 100644
--- a/actionpack/lib/action_view/helpers/text_helper.rb
+++ b/actionpack/lib/action_view/helpers/text_helper.rb
@@ -34,12 +34,16 @@ module ActionView
 
       # Truncates a given +text+ after a given <tt>:length</tt> if +text+ is longer than <tt>:length</tt>
       # (defaults to 30). The last characters will be replaced with the <tt>:omission</tt> (defaults to "...").
+      # Pass a <tt>:separator</tt> to truncate +text+ at a natural break.
       #
       # ==== Examples
       #
       #   truncate("Once upon a time in a world far far away")
       #   # => Once upon a time in a world f...
       #
+      #   truncate("Once upon a time in a world far far away", :separator => ' ')
+      #   # => Once upon a time in a world...
+      #
       #   truncate("Once upon a time in a world far far away", :length => 14)
       #   # => Once upon a...
       #
@@ -71,7 +75,8 @@ module ActionView
         if text
           l = options[:length] - options[:omission].mb_chars.length
           chars = text.mb_chars
-          (chars.length > options[:length] ? chars[0...l] + options[:omission] : text).to_s
+          stop = options[:separator] ? (chars.rindex(options[:separator].mb_chars, l) || l) : l
+          (chars.length > options[:length] ? chars[0...stop] + options[:omission] : text).to_s
         end
       end
 
@@ -535,7 +540,7 @@ module ActionView
           link_attributes = html_options.stringify_keys
           text.gsub(AUTO_LINK_RE) do
             href = $&
-            punctuation = ''
+            punctuation = []
             left, right = $`, $'
             # detect already linked URLs and URLs in the middle of a tag
             if left =~ /<[^>]+$/ && right =~ /^[^>]*>/
@@ -543,17 +548,18 @@ module ActionView
               href
             else
               # don't include trailing punctuation character as part of the URL
-              if href.sub!(/[^\w\/-]$/, '') and punctuation = $& and opening = BRACKETS[punctuation]
-                if href.scan(opening).size > href.scan(punctuation).size
-                  href << punctuation
-                  punctuation = ''
+              while href.sub!(/[^\w\/-]$/, '')
+                punctuation.push $&
+                if opening = BRACKETS[punctuation.last] and href.scan(opening).size > href.scan(punctuation.last).size
+                  href << punctuation.pop
+                  break
                 end
               end
 
               link_text = block_given?? yield(href) : href
               href = 'http://' + href unless href.index('http') == 0
 
-              content_tag(:a, h(link_text), link_attributes.merge('href' => href)) + punctuation
+              content_tag(:a, h(link_text), link_attributes.merge('href' => href)) + punctuation.reverse.join('')
             end
           end
         end
diff --git a/actionpack/lib/action_view/paths.rb b/actionpack/lib/action_view/paths.rb
index 1d0279889c..95c56faf9c 100644
--- a/actionpack/lib/action_view/paths.rb
+++ b/actionpack/lib/action_view/paths.rb
@@ -2,8 +2,8 @@ module ActionView #:nodoc:
   class PathSet < Array #:nodoc:
     def self.type_cast(obj)
       if obj.is_a?(String)
-        cache = !Object.const_defined?(:Rails) || Rails.configuration.cache_classes
-        Template::FileSystemPath.new(obj, :cache => cache)
+        cache = !defined?(Rails) || !Rails.respond_to?(:configuration) || Rails.configuration.cache_classes
+        Template::FileSystemPathWithFallback.new(obj, :cache => cache)
       else
         obj
       end
@@ -33,19 +33,19 @@ module ActionView #:nodoc:
       super(*objs.map { |obj| self.class.type_cast(obj) })
     end
 
-    def find_by_parts(path, extension = nil, prefix = nil, partial = false)
-      template_path = path.sub(/^\//, '')
+    def find_by_parts(path, details = {}, prefix = nil, partial = false)
+      # template_path = path.sub(/^\//, '')
+      template_path = path
 
       each do |load_path|
-        if template = load_path.find_by_parts(template_path, extension, prefix, partial)
+        if template = load_path.find_by_parts(template_path, details, prefix, partial)
           return template
         end
       end
-
-      Template.new(path, self)
-    rescue ActionView::MissingTemplate => e
-      extension ||= []
-      raise ActionView::MissingTemplate.new(self, "#{prefix}/#{path}.{#{extension.join(",")}}")
+      
+      # TODO: Have a fallback absolute path?
+      extension = details[:formats] || []
+      raise ActionView::MissingTemplate.new(self, "#{prefix}/#{path} - #{details.inspect} - partial: #{!!partial}")
     end
     
     def find_by_parts?(path, extension = nil, prefix = nil, partial = false)
diff --git a/actionpack/lib/action_view/render/partials.rb b/actionpack/lib/action_view/render/partials.rb
index e337dcb63b..eacf117bea 100644
--- a/actionpack/lib/action_view/render/partials.rb
+++ b/actionpack/lib/action_view/render/partials.rb
@@ -171,11 +171,21 @@ module ActionView
   #   <% end %>
   module Partials
     extend ActiveSupport::Memoizable
+    extend ActiveSupport::Concern
+    
+    included do
+      attr_accessor :_partial      
+    end
+
+    def _render_partial_from_controller(*args)
+      @assigns_added = false
+      _render_partial(*args)
+    end
 
     def _render_partial(options = {}) #:nodoc:
       options[:locals] ||= {}
 
-      case path = partial = options[:partial]        
+      case path = partial = options[:partial]
       when *_array_like_objects
         return _render_partial_collection(partial, options)
       else
@@ -187,6 +197,7 @@ module ActionView
           path = ActionController::RecordIdentifier.partial_path(object, controller_path)
         end
         _, _, prefix, object = parts = partial_parts(path, options)
+        parts[1] = {:formats => parts[1]}
         template = find_by_parts(*parts)
         _render_partial_object(template, options, (object unless object == true))
       end
@@ -221,16 +232,7 @@ module ActionView
       ensure
         @_proc_for_layout = nil
       end
-  
-      def _render_partial_with_layout(layout, options)
-        if layout
-          prefix = controller && !layout.include?("/") ? controller.controller_path : nil
-          layout = find_by_parts(layout, formats, prefix, true)
-        end
-        content = _render_partial(options)
-        return _render_content_with_layout(content, layout, options[:locals])
-      end
-    
+      
       def _deprecated_ivar_assign(template)
         if respond_to?(:controller)
           ivar = :"@#{template.variable_name}"
@@ -253,7 +255,7 @@ module ActionView
       def _render_partial_with_layout(layout, options)
         if layout
           prefix = controller && !layout.include?("/") ? controller.controller_path : nil
-          layout = find_by_parts(layout, formats, prefix, true)
+          layout = find_by_parts(layout, {:formats => formats}, prefix, true)
         end
         content = _render_partial(options)
         return _render_content_with_layout(content, layout, options[:locals])
@@ -286,13 +288,17 @@ module ActionView
           locals = (options[:locals] ||= {})
           object ||= locals[:object] || locals[template.variable_name]
           
-          _set_locals(object, locals, template, options)          
+          _set_locals(object, locals, template, options)
+          
+          self._partial = template
+          
           _render_template(template, locals)
         end
       end
 
       def _set_locals(object, locals, template, options)
         object ||= _deprecated_ivar_assign(template)
+        
         locals[:object] = locals[template.variable_name] = object
         locals[options[:as]] = object if options[:as]
       end
@@ -315,13 +321,16 @@ module ActionView
           locals[template.counter_name] = index
           
           index += 1
+          
+          self._partial = template
+          
           _render_template(template, locals)
         end.join(spacer)
       end
 
       def _pick_partial_template(partial_path) #:nodoc:
         prefix = controller_path unless partial_path.include?('/')
-        find_by_parts(partial_path, formats, prefix, true)
+        find_by_parts(partial_path, {:formats => formats}, prefix, true)
       end
       memoize :_pick_partial_template
   end
diff --git a/actionpack/lib/action_view/render/rendering.rb b/actionpack/lib/action_view/render/rendering.rb
index a9b2acecd5..fe785e7b20 100644
--- a/actionpack/lib/action_view/render/rendering.rb
+++ b/actionpack/lib/action_view/render/rendering.rb
@@ -23,10 +23,10 @@ module ActionView
         return _render_partial_with_layout(layout, options) if options.key?(:partial)
         return _render_partial_with_block(layout, block, options) if block_given?
     
-        layout = find_by_parts(layout, formats) if layout
+        layout = find_by_parts(layout, {:formats => formats}) if layout
     
         if file = options[:file]
-          template = find_by_parts(file, formats)
+          template = find_by_parts(file, {:formats => formats})
           _render_template_with_layout(template, layout, :locals => options[:locals])
         elsif inline = options[:inline]
           _render_inline(inline, layout, options)
@@ -46,8 +46,8 @@ module ActionView
       locals ||= {}
 
       if controller && layout
-        response.layout = layout.path_without_format_and_extension if controller.respond_to?(:response)
-        logger.info("Rendering template within #{layout.path_without_format_and_extension}") if logger
+        @_layout = layout.identifier
+        logger.info("Rendering template within #{layout.identifier}") if logger
       end
   
       begin
@@ -76,7 +76,6 @@ module ActionView
         end
       end
     rescue Exception => e
-      raise e if template.is_a?(InlineTemplate) || !template.filename
       if TemplateError === e
         e.sub_template_of(template)
         raise e
@@ -86,7 +85,9 @@ module ActionView
     end
 
     def _render_inline(inline, layout, options)
-      content = _render_template(InlineTemplate.new(options[:inline], options[:type]), options[:locals] || {})
+      handler = Template.handler_class_for_extension(options[:type] || "erb")
+      template = Template.new(options[:inline], "inline #{options[:inline].inspect}", handler, {})
+      content = _render_template(template, options[:locals] || {})
       layout ? _render_content_with_layout(content, layout, options[:locals]) : content
     end
 
@@ -94,9 +95,14 @@ module ActionView
       layout ? _render_content_with_layout(text, layout, options[:locals]) : text
     end
 
+    def _render_template_from_controller(*args)
+      @assigns_added = nil
+      _render_template_with_layout(*args)
+    end
+
     def _render_template_with_layout(template, layout = nil, options = {}, partial = false)
       if controller && logger
-        logger.info("Rendering #{template.path_without_extension}" + 
+        logger.info("Rendering #{template.identifier}" + 
           (options[:status] ? " (#{options[:status]})" : ''))
       end
   
@@ -107,7 +113,7 @@ module ActionView
         _render_template(template, options[:locals] || {})
       end
   
-      return content unless layout && !template.exempt_from_layout?
+      return content unless layout
       _render_content_with_layout(content, layout, options[:locals] || {})
     end
   end
diff --git a/actionpack/lib/action_view/template/error.rb b/actionpack/lib/action_view/template/error.rb
index 37cb1c7c6c..a06e80b294 100644
--- a/actionpack/lib/action_view/template/error.rb
+++ b/actionpack/lib/action_view/template/error.rb
@@ -12,7 +12,7 @@ module ActionView
     end
 
     def file_name
-      @template.relative_path
+      @template.identifier
     end
 
     def message
@@ -30,7 +30,7 @@ module ActionView
     def sub_template_message
       if @sub_templates
         "Trace of template inclusion: " +
-        @sub_templates.collect { |template| template.relative_path }.join(", ")
+        @sub_templates.collect { |template| template.identifier }.join(", ")
       else
         ""
       end
diff --git a/actionpack/lib/action_view/template/handler.rb b/actionpack/lib/action_view/template/handler.rb
index 672da0ed2b..3071c78174 100644
--- a/actionpack/lib/action_view/template/handler.rb
+++ b/actionpack/lib/action_view/template/handler.rb
@@ -1,3 +1,6 @@
+require "active_support/core_ext/class/inheritable_attributes"
+require "action_dispatch/http/mime_type"
+
 # Legacy TemplateHandler stub
 module ActionView
   module TemplateHandlers #:nodoc:
@@ -19,6 +22,9 @@ module ActionView
   end
 
   class TemplateHandler
+    extlib_inheritable_accessor :default_format
+    self.default_format = Mime::HTML
+
     def self.call(template)
       "#{name}.new(self).render(template, local_assigns)"
     end
diff --git a/actionpack/lib/action_view/template/handlers.rb b/actionpack/lib/action_view/template/handlers.rb
index fb85f28851..faf54b9fe5 100644
--- a/actionpack/lib/action_view/template/handlers.rb
+++ b/actionpack/lib/action_view/template/handlers.rb
@@ -16,6 +16,10 @@ module ActionView #:nodoc:
 
     @@template_handlers = {}
     @@default_template_handlers = nil
+    
+    def self.extensions
+      @@template_handlers.keys
+    end
 
     # Register a class that knows how to handle template files with the given
     # extension. This can be used to implement new template types.
@@ -29,7 +33,7 @@ module ActionView #:nodoc:
     end
 
     def template_handler_extensions
-      @@template_handlers.keys.map(&:to_s).sort
+      @@template_handlers.keys.map {|key| key.to_s }.sort
     end
 
     def registered_template_handler(extension)
@@ -42,7 +46,7 @@ module ActionView #:nodoc:
     end
 
     def handler_class_for_extension(extension)
-      registered_template_handler(extension) || @@default_template_handlers
+      (extension && registered_template_handler(extension.to_sym)) || @@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 788dc93326..f412228752 100644
--- a/actionpack/lib/action_view/template/handlers/builder.rb
+++ b/actionpack/lib/action_view/template/handlers/builder.rb
@@ -5,6 +5,8 @@ module ActionView
     class Builder < TemplateHandler
       include Compilable
 
+      self.default_format = Mime::XML
+
       def compile(template)
         "_set_controller_content_type(Mime::XML);" +
           "xml = ::Builder::XmlMarkup.new(:indent => 2);" +
diff --git a/actionpack/lib/action_view/template/handlers/erb.rb b/actionpack/lib/action_view/template/handlers/erb.rb
index a20b1b0cd3..d773df7d29 100644
--- a/actionpack/lib/action_view/template/handlers/erb.rb
+++ b/actionpack/lib/action_view/template/handlers/erb.rb
@@ -1,4 +1,5 @@
 require 'erb'
+require 'active_support/core_ext/class/attribute_accessors'
 
 module ActionView
   module TemplateHandlers
@@ -12,12 +13,10 @@ module ActionView
       cattr_accessor :erb_trim_mode
       self.erb_trim_mode = '-'
 
-      def compile(template)
-        src = ::ERB.new("<% __in_erb_template=true %>#{template.source}", nil, erb_trim_mode, '@output_buffer').src
+      self.default_format = Mime::HTML
 
-        # Ruby 1.9 prepends an encoding to the source. However this is
-        # useless because you can only set an encoding on the first line
-        RUBY_VERSION >= '1.9' ? src.sub(/\A#coding:.*\n/, '') : src
+      def compile(template)
+        ::ERB.new("<% __in_erb_template=true %>#{template.source}", nil, erb_trim_mode, '@output_buffer').src
       end
     end
   end
diff --git a/actionpack/lib/action_view/template/handlers/rjs.rb b/actionpack/lib/action_view/template/handlers/rjs.rb
index 802a79b3fc..a36744c2b7 100644
--- a/actionpack/lib/action_view/template/handlers/rjs.rb
+++ b/actionpack/lib/action_view/template/handlers/rjs.rb
@@ -3,11 +3,17 @@ module ActionView
     class RJS < TemplateHandler
       include Compilable
 
+      self.default_format = Mime::JS
+
       def compile(template)
         "@formats = [:html];" +
         "controller.response.content_type ||= Mime::JS;" +
           "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/path.rb b/actionpack/lib/action_view/template/path.rb
index 9709549b70..478bf96c9a 100644
--- a/actionpack/lib/action_view/template/path.rb
+++ b/actionpack/lib/action_view/template/path.rb
@@ -1,23 +1,82 @@
+require "pathname"
+
 module ActionView
   class Template
+  # Abstract super class
     class Path
-      attr_reader :path, :paths
-      delegate :hash, :inspect, :to => :path
-      
       def initialize(options)
-        @cache = options[:cache]
+        @cache  = options[:cache]
+        @cached = {}
+      end
+    
+      # Normalizes the arguments and passes it on to find_template
+      def find_by_parts(*args)
+        find_all_by_parts(*args).first
+      end
+      
+      def find_all_by_parts(name, details = {}, prefix = nil, partial = nil)
+        details[:locales] = [I18n.locale]
+        name = name.to_s.gsub(handler_matcher, '').split("/")
+        find_templates(name.pop, details, [prefix, *name].compact.join("/"), partial)
+      end
+    
+    private
+      
+      # This is what child classes implement. No defaults are needed
+      # because Path guarentees that the arguments are present and
+      # normalized.
+      def find_templates(name, details, prefix, partial)
+        raise NotImplementedError
+      end
+      
+      def valid_handlers
+        @valid_handlers ||= TemplateHandlers.extensions
+      end
+      
+      def handler_matcher
+        @handler_matcher ||= begin
+          e = valid_handlers.join('|')
+          /\.(?:#{e})$/
+        end
+      end
+       
+      def handler_glob
+        e = TemplateHandlers.extensions.map{|h| ".#{h},"}.join
+        "{#{e}}"
+      end
+      
+      def formats_glob
+        @formats_glob ||= begin
+          formats = Mime::SET.map { |m| m.symbol }
+          '{' + formats.map { |l| ".#{l}," }.join + '}'
+        end
+      end
+      
+      def cached(key)
+        return yield unless @cache
+        return @cached[key] if @cached.key?(key)
+        @cached[key] = yield
+      end
+    end
+  
+    class FileSystemPath < Path
+    
+      def initialize(path, options = {})
+        raise ArgumentError, "path already is a Path class" if path.is_a?(Path)
+        super(options)
+        @path = Pathname.new(path).expand_path
       end
 
+      # TODO: This is the currently needed API. Make this suck less
+      # ==== <suck>
+      attr_reader :path
+    
       def to_s
-        if defined?(RAILS_ROOT)
-          path.to_s.sub(/^#{Regexp.escape(File.expand_path(RAILS_ROOT))}\//, '')
-        else
-          path.to_s
-        end
+        path.to_s
       end
 
       def to_str
-        path.to_str
+        path.to_s
       end
 
       def ==(path)
@@ -27,59 +86,65 @@ module ActionView
       def eql?(path)
         to_str == path.to_str
       end
-
-      def find_by_parts(name, extensions = nil, prefix = nil, partial = nil)
-        path = prefix ? "#{prefix}/" : ""
-    
-        name = name.to_s.split("/")
-        name[-1] = "_#{name[-1]}" if partial
+      # ==== </suck>
     
-        path << name.join("/")
-
-        template = nil
-
-        Array(extensions).each do |extension|
-          extensioned_path = extension ? "#{path}.#{extension}" : path
-          break if (template = find_template(extensioned_path))
+      def find_templates(name, details, prefix, partial, root = "#{@path}/")
+        if glob = details_to_glob(name, details, prefix, partial, root)
+          cached(glob) do
+            Dir[glob].map do |path|
+              next if File.directory?(path)
+              source = File.read(path)
+              identifier = Pathname.new(path).expand_path.to_s
+              
+              Template.new(source, identifier, *path_to_details(path))
+            end.compact
+          end
         end
-        template || find_template(path)
       end
-  
+    
     private
-      def create_template(file)
-        Template.new(file.split("#{self}/").last, self)
-      end
-    end
-
-    class FileSystemPath < Path
-      def initialize(path, options = {})
-        raise ArgumentError, "path already is a Path class" if path.is_a?(Path)        
-        
-        super(options)
-        @path, @paths = path, {}
+  
+      # :api: plugin
+      def details_to_glob(name, details, prefix, partial, root)
+        path = ""
+        path << "#{prefix}/" unless prefix.empty?
+        path << (partial ? "_#{name}" : name)
+      
+        extensions = ""
+        [:locales, :formats].each do |k|
+          extensions << if exts = details[k]
+            '{' + exts.map {|e| ".#{e},"}.join + '}'
+          else
+            k == :formats ? formats_glob : ''
+          end
+        end
         
-        # **/*/** is a hax for symlinked directories
-        load_templates("#{@path}/{**/*,**}/**") if @cache
+        "#{root}#{path}#{extensions}#{handler_glob}"
       end
+      
+      # TODO: fix me
+      # :api: plugin
+      def path_to_details(path)
+        # [:erb, :format => :html, :locale => :en, :partial => true/false]
+        if m = path.match(%r'/(_)?[\w-]+(\.[\w-]+)*\.(\w+)$')
+          partial = m[1] == '_'
+          details = (m[2]||"").split('.').reject { |e| e.empty? }
+          handler = Template.handler_class_for_extension(m[3])
 
-    private
-    
-      def load_template(template)
-        template.load!
-        template.accessible_paths.each do |path|
-          @paths[path] = template
+          format  = Mime[details.last] && details.pop.to_sym
+          locale  = details.last && details.pop.to_sym
+          
+          return handler, :format => format, :locale => locale, :partial => partial
         end
       end
-    
-      def find_template(path)
-        load_templates("#{@path}/#{path}{,.*}") unless @cache
-        @paths[path]
-      end    
-    
-      def load_templates(glob)
-        Dir[glob].each do |file|
-          load_template(create_template(file)) unless File.directory?(file)
-        end
+    end
+
+    class FileSystemPathWithFallback < FileSystemPath
+      
+      def find_templates(name, details, prefix, partial)
+        templates = super
+        return super(name, details, prefix, partial, '') if templates.empty?
+        templates
       end
       
     end
diff --git a/actionpack/lib/action_view/template/template.rb b/actionpack/lib/action_view/template/template.rb
index 0d2f201458..a9897258d2 100644
--- a/actionpack/lib/action_view/template/template.rb
+++ b/actionpack/lib/action_view/template/template.rb
@@ -1,187 +1,92 @@
+# encoding: utf-8
+# This is so that templates compiled in this file are UTF-8
+
+require 'set'
 require "action_view/template/path"
 
-module ActionView #:nodoc:
+module ActionView
   class Template
     extend TemplateHandlers
-    extend ActiveSupport::Memoizable
-    
-    module Loading
-      def load!
-        @cached = true
-        # freeze
-      end    
-    end
-    include Loading    
+    attr_reader :source, :identifier, :handler, :mime_type, :details
     
-    include Renderable
-
-    # Templates that are exempt from layouts
-    @@exempt_from_layout = Set.new([/\.rjs$/])
-
-    # Don't render layouts for templates with the given extensions.
-    def self.exempt_from_layout(*extensions)
-      regexps = extensions.collect do |extension|
-        extension.is_a?(Regexp) ? extension : /\.#{Regexp.escape(extension.to_s)}$/
+    def initialize(source, identifier, handler, details)
+      @source     = source
+      @identifier = identifier
+      @handler    = handler
+      @details    = details
+
+      format = details.delete(:format) || begin
+        # TODO: Clean this up
+        handler.respond_to?(:default_format) ? handler.default_format.to_sym.to_s : "html"
       end
-      @@exempt_from_layout.merge(regexps)
-    end
-
-    attr_accessor :template_path, :filename, :load_path, :base_path
-    attr_accessor :locale, :name, :format, :extension
-    delegate :to_s, :to => :path
-
-    def initialize(template_path, load_paths = [])
-      template_path = template_path.dup
-      @load_path, @filename = find_full_path(template_path, load_paths)
-      @base_path, @name, @locale, @format, @extension = split(template_path)
-      @base_path.to_s.gsub!(/\/$/, '') # Push to split method
-
-      # Extend with partial super powers
-      extend RenderablePartial if @name =~ /^_/
+      @mime_type = Mime::Type.lookup_by_extension(format.to_s)
+      @details[:formats] = Array.wrap(format && format.to_sym)
     end
     
-    def accessible_paths
-      paths = []
-
-      if valid_extension?(extension)
-        paths << path
-        paths << path_without_extension
-        if multipart?
-          formats = format.split(".")
-          paths << "#{path_without_format_and_extension}.#{formats.first}"
-          paths << "#{path_without_format_and_extension}.#{formats.second}"
-        end
-      else
-        # template without explicit template handler should only be reachable through its exact path
-        paths << template_path
-      end
-
-      paths
-    end
-    
-    def relative_path
-      path = File.expand_path(filename)
-      path.sub!(/^#{Regexp.escape(File.expand_path(RAILS_ROOT))}\//, '') if defined?(RAILS_ROOT)
-      path
+    def render(view, locals, &blk)
+      method_name = compile(locals, view)
+      view.send(method_name, locals, &blk)
     end
-    memoize :relative_path
     
-    def source
-      File.read(filename)
+    # TODO: Figure out how to abstract this
+    def variable_name
+      identifier[%r'_?(\w+)(\.\w+)*$', 1].to_sym
     end
-    memoize :source
-    
-    def exempt_from_layout?
-      @@exempt_from_layout.any? { |exempted| path =~ exempted }
-    end    
-    
-    def path_without_extension
-      [base_path, [name, locale, format].compact.join('.')].compact.join('/')
-    end
-    memoize :path_without_extension    
 
-    def path_without_format_and_extension
-      [base_path, [name, locale].compact.join('.')].compact.join('/')
-    end
-    memoize :path_without_format_and_extension
-    
-    def path
-      [base_path, [name, locale, format, extension].compact.join('.')].compact.join('/')
-    end
-    memoize :path
-    
-    def mime_type
-      Mime::Type.lookup_by_extension(format) if format && defined?(::Mime)
+    # TODO: Figure out how to abstract this
+    def counter_name
+      "#{variable_name}_counter".to_sym
     end
-    memoize :mime_type      
     
-    def multipart?
-      format && format.include?('.')
-    end    
-    
-    def content_type
-      format.gsub('.', '/')
-    end    
-    
-  private
-    
-    def format_and_extension
-      (extensions = [format, extension].compact.join(".")).blank? ? nil : extensions
-    end
-    memoize :format_and_extension
-
-    def mtime
-      File.mtime(filename)
-    end
-    memoize :mtime
-
-    def method_segment
-      relative_path.to_s.gsub(/([^a-zA-Z0-9_])/) { $1.ord }
-    end
-    memoize :method_segment
-
-    def stale?
-      File.mtime(filename) > mtime
-    end
-
-    def recompile?
-      !@cached
+    # TODO: kill hax
+    def partial?
+      @details[:partial]
     end
 
-    def valid_extension?(extension)
-      !Template.registered_template_handler(extension).nil?
-    end
-
-    def valid_locale?(locale)
-      I18n.available_locales.include?(locale.to_sym)
-    end
+  private
 
-    def find_full_path(path, load_paths)
-      load_paths = Array(load_paths) + [nil]
-      load_paths.each do |load_path|
-        file = load_path ? "#{load_path.to_str}/#{path}" : path
-        return load_path, file if File.file?(file)
-      end
-      raise MissingTemplate.new(load_paths, path)
-    end
+    def compile(locals, view)
+      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
+
+      code = @handler.call(self)
+      encoding_comment = $1 if code.sub!(/\A(#.*coding.*)\n/, '')
+
+      source = <<-end_src
+        def #{method_name}(local_assigns)
+          old_output_buffer = output_buffer;#{locals_code};#{code}
+        ensure
+          self.output_buffer = old_output_buffer
+        end
+      end_src
 
-    # Returns file split into an array
-    #   [base_path, name, locale, format, extension]
-    def split(file)
-      if m = file.to_s.match(/^(.*\/)?([^\.]+)\.(.*)$/)
-        base_path = m[1]
-        name = m[2]
-        extensions = m[3]
+      if encoding_comment
+        source = "#{encoding_comment}\n#{source}"
+        line = -1
       else
-        return
+        line = 0
       end
 
-      locale = nil
-      format = nil
-      extension = nil
-
-      if m = extensions.split(".")
-        if valid_locale?(m[0]) && m[1] && valid_extension?(m[2]) # All three
-          locale = m[0]
-          format = m[1]
-          extension = m[2]
-        elsif m[0] && m[1] && valid_extension?(m[2]) # Multipart formats
-          format = "#{m[0]}.#{m[1]}"
-          extension = m[2]
-        elsif valid_locale?(m[0]) && valid_extension?(m[1]) # locale and extension
-          locale = m[0]
-          extension = m[1]
-        elsif valid_extension?(m[1]) # format and extension
-          format = m[0]
-          extension = m[1]
-        elsif valid_extension?(m[0]) # Just extension
-          extension = m[0]
-        else # No extension
-          format = m[0]
+      begin
+        ActionView::Base::CompiledTemplates.module_eval(source, identifier, line)
+        method_name
+      rescue Exception => e # errors from template code
+        if logger = (view && view.logger)
+          logger.debug "ERROR: compiling #{method_name} RAISED #{e}"
+          logger.debug "Function body: #{source}"
+          logger.debug "Backtrace: #{e.backtrace.join("\n")}"
         end
-      end
 
-      [base_path, name, locale, format, extension]
+        raise ActionView::TemplateError.new(self, {}, e)
+      end
+    end
+  
+    def build_method_name(locals)
+      # TODO: is locals.keys.hash reliably the same?
+      "_render_template_#{@identifier.hash}_#{__id__}_#{locals.keys.hash}".gsub('-', "_")
     end
   end
 end
diff --git a/actionpack/lib/action_view/template/text.rb b/actionpack/lib/action_view/template/text.rb
index f81174d707..fd57b1677e 100644
--- a/actionpack/lib/action_view/template/text.rb
+++ b/actionpack/lib/action_view/template/text.rb
@@ -1,9 +1,21 @@
 module ActionView #:nodoc:
   class TextTemplate < String #:nodoc:
+
+    def initialize(string, content_type = Mime[:html])
+      super(string.to_s)
+      @content_type = Mime[content_type]
+    end
+
+    def details
+      {:formats => [@content_type.to_sym]}
+    end
+
+    def identifier() self end
     
     def render(*) self end
     
-    def exempt_from_layout?() false end
-    
+    def mime_type() @content_type end
+      
+    def partial?() false end
   end
 end
diff --git a/actionpack/lib/action_view/test_case.rb b/actionpack/lib/action_view/test_case.rb
index c8f204046b..7355af4192 100644
--- a/actionpack/lib/action_view/test_case.rb
+++ b/actionpack/lib/action_view/test_case.rb
@@ -7,19 +7,21 @@ module ActionView
       @_rendered = { :template => nil, :partials => Hash.new(0) }
       initialize_without_template_tracking(*args)
     end
-    
+
+    attr_internal :rendered
     alias_method :_render_template_without_template_tracking, :_render_template
     def _render_template(template, local_assigns = {})
-      if template.respond_to?(:path) && !template.is_a?(InlineTemplate)
-        @_rendered[:partials][template] += 1 if template.is_a?(RenderablePartial)
-        @_rendered[:template] ||= template
+      if template.respond_to?(:identifier) && template.present?
+        @_rendered[:partials][template] += 1 if template.partial?
+        @_rendered[:template] ||= []
+        @_rendered[:template] << template
       end
       _render_template_without_template_tracking(template, local_assigns)
-    end    
+    end
   end
 
   class TestCase < ActiveSupport::TestCase
-    include ActionController::TestCase::Assertions
+    include ActionDispatch::Assertions
     include ActionController::TestProcess
 
     class_inheritable_accessor :helper_class