Merge branch 'master' of github.com:lifo/docrails

78 files changed, 1177 insertions, 4086 deletions

diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index 4e090ed526..8b78e0f801 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,3 +1,16 @@
+*   Introduce `BasicRendering` which is the most basic rendering implementation. It
+    allows to `render :text` and `render :nothing` without depending on Action View.
+
+    *Łukasz Strzałkowski*
+
+*   Separate Action View completely from Action Pack.
+
+    *Łukasz Strzałkowski*
+
+*   Development mode exceptions are rendered in text format in case of XHR request.
+
+    *Kir Shatrov*
+
 *   Fix an issue where :if and :unless controller action procs were being run
     before checking for the correct action in the :only and :unless options.
 
diff --git a/actionpack/actionpack.gemspec b/actionpack/actionpack.gemspec
index e3aa84ba0f..b4315c1f57 100644
--- a/actionpack/actionpack.gemspec
+++ b/actionpack/actionpack.gemspec
@@ -20,11 +20,11 @@ Gem::Specification.new do |s|
   s.requirements << 'none'
 
   s.add_dependency 'activesupport', version
-  s.add_dependency 'actionview',    version
 
   s.add_dependency 'rack',          '~> 1.5.2'
   s.add_dependency 'rack-test',     '~> 0.6.2'
 
-  s.add_development_dependency 'activemodel', version
-  s.add_development_dependency 'tzinfo',      '~> 0.3.37'
+  s.add_development_dependency 'actionview',    version
+  s.add_development_dependency 'activemodel',   version
+  s.add_development_dependency 'tzinfo',        '~> 0.3.37'
 end
diff --git a/actionpack/lib/abstract_controller.rb b/actionpack/lib/abstract_controller.rb
index 867a7954e0..fe9802e395 100644
--- a/actionpack/lib/abstract_controller.rb
+++ b/actionpack/lib/abstract_controller.rb
@@ -10,12 +10,11 @@ module AbstractController
   autoload :Base
   autoload :Callbacks
   autoload :Collector
+  autoload :DoubleRenderError, "abstract_controller/rendering"
   autoload :Helpers
-  autoload :Layouts
   autoload :Logger
   autoload :Rendering
   autoload :Translation
   autoload :AssetPaths
-  autoload :ViewPaths
   autoload :UrlFor
 end
diff --git a/actionpack/lib/abstract_controller/base.rb b/actionpack/lib/abstract_controller/base.rb
index af5de815bb..a84ed17bd4 100644
--- a/actionpack/lib/abstract_controller/base.rb
+++ b/actionpack/lib/abstract_controller/base.rb
@@ -114,6 +114,11 @@ module AbstractController
       end
     end
 
+    # Define some internal variables that should not be propagated to the view.
+    def self.default_protected_instance_vars
+      []
+    end
+
     abstract!
 
     # Calls the action going through the entire action dispatch stack.
diff --git a/actionpack/lib/abstract_controller/layouts.rb b/actionpack/lib/abstract_controller/layouts.rb
deleted file mode 100644
index 8e7bdf620e..0000000000
--- a/actionpack/lib/abstract_controller/layouts.rb
+++ /dev/null
@@ -1,423 +0,0 @@
-require "active_support/core_ext/module/remove_method"
-
-module AbstractController
-  # Layouts reverse the common pattern of including shared headers and footers in many templates to isolate changes in
-  # repeated setups. The inclusion pattern has pages that look like this:
-  #
-  #   <%= render "shared/header" %>
-  #   Hello World
-  #   <%= render "shared/footer" %>
-  #
-  # This approach is a decent way of keeping common structures isolated from the changing content, but it's verbose
-  # and if you ever want to change the structure of these two includes, you'll have to change all the templates.
-  #
-  # With layouts, you can flip it around and have the common structure know where to insert changing content. This means
-  # that the header and footer are only mentioned in one place, like this:
-  #
-  #   // The header part of this layout
-  #   <%= yield %>
-  #   // The footer part of this layout
-  #
-  # And then you have content pages that look like this:
-  #
-  #    hello world
-  #
-  # At rendering time, the content page is computed and then inserted in the layout, like this:
-  #
-  #   // The header part of this layout
-  #   hello world
-  #   // The footer part of this layout
-  #
-  # == Accessing shared variables
-  #
-  # Layouts have access to variables specified in the content pages and vice versa. This allows you to have layouts with
-  # references that won't materialize before rendering time:
-  #
-  #   <h1><%= @page_title %></h1>
-  #   <%= yield %>
-  #
-  # ...and content pages that fulfill these references _at_ rendering time:
-  #
-  #    <% @page_title = "Welcome" %>
-  #    Off-world colonies offers you a chance to start a new life
-  #
-  # The result after rendering is:
-  #
-  #   <h1>Welcome</h1>
-  #   Off-world colonies offers you a chance to start a new life
-  #
-  # == Layout assignment
-  #
-  # You can either specify a layout declaratively (using the #layout class method) or give
-  # it the same name as your controller, and place it in <tt>app/views/layouts</tt>.
-  # If a subclass does not have a layout specified, it inherits its layout using normal Ruby inheritance.
-  #
-  # For instance, if you have PostsController and a template named <tt>app/views/layouts/posts.html.erb</tt>,
-  # that template will be used for all actions in PostsController and controllers inheriting
-  # from PostsController.
-  #
-  # If you use a module, for instance Weblog::PostsController, you will need a template named
-  # <tt>app/views/layouts/weblog/posts.html.erb</tt>.
-  #
-  # Since all your controllers inherit from ApplicationController, they will use
-  # <tt>app/views/layouts/application.html.erb</tt> if no other layout is specified
-  # or provided.
-  #
-  # == Inheritance Examples
-  #
-  #   class BankController < ActionController::Base
-  #     # bank.html.erb exists
-  #
-  #   class ExchangeController < BankController
-  #     # exchange.html.erb exists
-  #
-  #   class CurrencyController < BankController
-  #
-  #   class InformationController < BankController
-  #     layout "information"
-  #
-  #   class TellerController < InformationController
-  #     # teller.html.erb exists
-  #
-  #   class EmployeeController < InformationController
-  #     # employee.html.erb exists
-  #     layout nil
-  #
-  #   class VaultController < BankController
-  #     layout :access_level_layout
-  #
-  #   class TillController < BankController
-  #     layout false
-  #
-  # In these examples, we have three implicit lookup scenarios:
-  # * The BankController uses the "bank" layout.
-  # * The ExchangeController uses the "exchange" layout.
-  # * The CurrencyController inherits the layout from BankController.
-  #
-  # However, when a layout is explicitly set, the explicitly set layout wins:
-  # * The InformationController uses the "information" layout, explicitly set.
-  # * The TellerController also uses the "information" layout, because the parent explicitly set it.
-  # * The EmployeeController uses the "employee" layout, because it set the layout to nil, resetting the parent configuration.
-  # * The VaultController chooses a layout dynamically by calling the <tt>access_level_layout</tt> method.
-  # * The TillController does not use a layout at all.
-  #
-  # == Types of layouts
-  #
-  # Layouts are basically just regular templates, but the name of this template needs not be specified statically. Sometimes
-  # you want to alternate layouts depending on runtime information, such as whether someone is logged in or not. This can
-  # be done either by specifying a method reference as a symbol or using an inline method (as a proc).
-  #
-  # The method reference is the preferred approach to variable layouts and is used like this:
-  #
-  #   class WeblogController < ActionController::Base
-  #     layout :writers_and_readers
-  #
-  #     def index
-  #       # fetching posts
-  #     end
-  #
-  #     private
-  #       def writers_and_readers
-  #         logged_in? ? "writer_layout" : "reader_layout"
-  #       end
-  #   end
-  #
-  # Now when a new request for the index action is processed, the layout will vary depending on whether the person accessing
-  # is logged in or not.
-  #
-  # If you want to use an inline method, such as a proc, do something like this:
-  #
-  #   class WeblogController < ActionController::Base
-  #     layout proc { |controller| controller.logged_in? ? "writer_layout" : "reader_layout" }
-  #   end
-  #
-  # If an argument isn't given to the proc, it's evaluated in the context of
-  # the current controller anyway.
-  #
-  #   class WeblogController < ActionController::Base
-  #     layout proc { logged_in? ? "writer_layout" : "reader_layout" }
-  #   end
-  #
-  # Of course, the most common way of specifying a layout is still just as a plain template name:
-  #
-  #   class WeblogController < ActionController::Base
-  #     layout "weblog_standard"
-  #   end
-  #
-  # The template will be looked always in <tt>app/views/layouts/</tt> folder. But you can point
-  # <tt>layouts</tt> folder direct also. <tt>layout "layouts/demo"</tt> is the same as <tt>layout "demo"</tt>.
-  #
-  # Setting the layout to nil forces it to be looked up in the filesystem and fallbacks to the parent behavior if none exists.
-  # Setting it to nil is useful to re-enable template lookup overriding a previous configuration set in the parent:
-  #
-  #     class ApplicationController < ActionController::Base
-  #       layout "application"
-  #     end
-  #
-  #     class PostsController < ApplicationController
-  #       # Will use "application" layout
-  #     end
-  #
-  #     class CommentsController < ApplicationController
-  #       # Will search for "comments" layout and fallback "application" layout
-  #       layout nil
-  #     end
-  #
-  # == Conditional layouts
-  #
-  # If you have a layout that by default is applied to all the actions of a controller, you still have the option of rendering
-  # a given action or set of actions without a layout, or restricting a layout to only a single action or a set of actions. The
-  # <tt>:only</tt> and <tt>:except</tt> options can be passed to the layout call. For example:
-  #
-  #   class WeblogController < ActionController::Base
-  #     layout "weblog_standard", except: :rss
-  #
-  #     # ...
-  #
-  #   end
-  #
-  # This will assign "weblog_standard" as the WeblogController's layout for all actions except for the +rss+ action, which will
-  # be rendered directly, without wrapping a layout around the rendered view.
-  #
-  # Both the <tt>:only</tt> and <tt>:except</tt> condition can accept an arbitrary number of method references, so
-  # #<tt>except: [ :rss, :text_only ]</tt> is valid, as is <tt>except: :rss</tt>.
-  #
-  # == Using a different layout in the action render call
-  #
-  # If most of your actions use the same layout, it makes perfect sense to define a controller-wide layout as described above.
-  # Sometimes you'll have exceptions where one action wants to use a different layout than the rest of the controller.
-  # You can do this by passing a <tt>:layout</tt> option to the <tt>render</tt> call. For example:
-  #
-  #   class WeblogController < ActionController::Base
-  #     layout "weblog_standard"
-  #
-  #     def help
-  #       render action: "help", layout: "help"
-  #     end
-  #   end
-  #
-  # This will override the controller-wide "weblog_standard" layout, and will render the help action with the "help" layout instead.
-  module Layouts
-    extend ActiveSupport::Concern
-
-    include Rendering
-
-    included do
-      class_attribute :_layout, :_layout_conditions, :instance_accessor => false
-      self._layout = nil
-      self._layout_conditions = {}
-      _write_layout_method
-    end
-
-    delegate :_layout_conditions, to: :class
-
-    module ClassMethods
-      def inherited(klass) # :nodoc:
-        super
-        klass._write_layout_method
-      end
-
-      # This module is mixed in if layout conditions are provided. This means
-      # that if no layout conditions are used, this method is not used
-      module LayoutConditions # :nodoc:
-      private
-
-        # Determines whether the current action has a layout definition by
-        # checking the action name against the :only and :except conditions
-        # set by the <tt>layout</tt> method.
-        #
-        # ==== Returns
-        # * <tt> Boolean</tt> - True if the action has a layout definition, false otherwise.
-        def _conditional_layout?
-          return unless super
-
-          conditions = _layout_conditions
-
-          if only = conditions[:only]
-            only.include?(action_name)
-          elsif except = conditions[:except]
-            !except.include?(action_name)
-          else
-            true
-          end
-        end
-      end
-
-      # Specify the layout to use for this class.
-      #
-      # If the specified layout is a:
-      # String:: the String is the template name
-      # Symbol:: call the method specified by the symbol, which will return the template name
-      # false::  There is no layout
-      # true::   raise an ArgumentError
-      # nil::    Force default layout behavior with inheritance
-      #
-      # ==== Parameters
-      # * <tt>layout</tt> - The layout to use.
-      #
-      # ==== Options (conditions)
-      # * :only   - A list of actions to apply this layout to.
-      # * :except - Apply this layout to all actions but this one.
-      def layout(layout, conditions = {})
-        include LayoutConditions unless conditions.empty?
-
-        conditions.each {|k, v| conditions[k] = Array(v).map {|a| a.to_s} }
-        self._layout_conditions = conditions
-
-        self._layout = layout
-        _write_layout_method
-      end
-
-      # If no layout is supplied, look for a template named the return
-      # value of this method.
-      #
-      # ==== Returns
-      # * <tt>String</tt> - A template name
-      def _implied_layout_name # :nodoc:
-        controller_path
-      end
-
-      # Creates a _layout method to be called by _default_layout .
-      #
-      # If a layout is not explicitly mentioned then look for a layout with the controller's name.
-      # if nothing is found then try same procedure to find super class's layout.
-      def _write_layout_method # :nodoc:
-        remove_possible_method(:_layout)
-
-        prefixes    = _implied_layout_name =~ /\blayouts/ ? [] : ["layouts"]
-        default_behavior = "lookup_context.find_all('#{_implied_layout_name}', #{prefixes.inspect}).first || super"
-        name_clause = if name
-          default_behavior
-        else
-          <<-RUBY
-            super
-          RUBY
-        end
-
-        layout_definition = case _layout
-          when String
-            _layout.inspect
-          when Symbol
-            <<-RUBY
-              #{_layout}.tap do |layout|
-                return #{default_behavior} if layout.nil?
-                unless layout.is_a?(String) || !layout
-                  raise ArgumentError, "Your layout method :#{_layout} returned \#{layout}. It " \
-                    "should have returned a String, false, or nil"
-                end
-              end
-            RUBY
-          when Proc
-            define_method :_layout_from_proc, &_layout
-            protected :_layout_from_proc
-            <<-RUBY
-              result = _layout_from_proc(#{_layout.arity == 0 ? '' : 'self'})
-              return #{default_behavior} if result.nil?
-              result
-            RUBY
-          when false
-            nil
-          when true
-            raise ArgumentError, "Layouts must be specified as a String, Symbol, Proc, false, or nil"
-          when nil
-            name_clause
-        end
-
-        self.class_eval <<-RUBY, __FILE__, __LINE__ + 1
-          def _layout
-            if _conditional_layout?
-              #{layout_definition}
-            else
-              #{name_clause}
-            end
-          end
-          private :_layout
-        RUBY
-      end
-    end
-
-    def _normalize_options(options) # :nodoc:
-      super
-
-      if _include_layout?(options)
-        layout = options.delete(:layout) { :default }
-        options[:layout] = _layout_for_option(layout)
-      end
-    end
-
-    attr_internal_writer :action_has_layout
-
-    def initialize(*) # :nodoc:
-      @_action_has_layout = true
-      super
-    end
-
-    # Controls whether an action should be rendered using a layout.
-    # If you want to disable any <tt>layout</tt> settings for the
-    # current action so that it is rendered without a layout then
-    # either override this method in your controller to return false
-    # for that action or set the <tt>action_has_layout</tt> attribute
-    # to false before rendering.
-    def action_has_layout?
-      @_action_has_layout
-    end
-
-  private
-
-    def _conditional_layout?
-      true
-    end
-
-    # This will be overwritten by _write_layout_method
-    def _layout; end
-
-    # Determine the layout for a given name, taking into account the name type.
-    #
-    # ==== Parameters
-    # * <tt>name</tt> - The name of the template
-    def _layout_for_option(name)
-      case name
-      when String     then _normalize_layout(name)
-      when Proc       then name
-      when true       then Proc.new { _default_layout(true)  }
-      when :default   then Proc.new { _default_layout(false) }
-      when false, nil then nil
-      else
-        raise ArgumentError,
-          "String, Proc, :default, true, or false, expected for `layout'; you passed #{name.inspect}"
-      end
-    end
-
-    def _normalize_layout(value)
-      value.is_a?(String) && value !~ /\blayouts/ ? "layouts/#{value}" : value
-    end
-
-    # Returns the default layout for this controller.
-    # Optionally raises an exception if the layout could not be found.
-    #
-    # ==== Parameters
-    # * <tt>require_layout</tt> - If set to true and layout is not found,
-    #   an ArgumentError exception is raised (defaults to false)
-    #
-    # ==== Returns
-    # * <tt>template</tt> - The template object for the default layout (or nil)
-    def _default_layout(require_layout = false)
-      begin
-        value = _layout if action_has_layout?
-      rescue NameError => e
-        raise e, "Could not render layout: #{e.message}"
-      end
-
-      if require_layout && action_has_layout? && !value
-        raise ArgumentError,
-          "There was no default layout for #{self.class} in #{view_paths.inspect}"
-      end
-
-      _normalize_layout(value)
-    end
-
-    def _include_layout?(options)
-      (options.keys & [:text, :inline, :partial]).empty? || options.key?(:layout)
-    end
-  end
-end
diff --git a/actionpack/lib/abstract_controller/rendering.rb b/actionpack/lib/abstract_controller/rendering.rb
index 3f34add790..41f19fba78 100644
--- a/actionpack/lib/abstract_controller/rendering.rb
+++ b/actionpack/lib/abstract_controller/rendering.rb
@@ -1,5 +1,5 @@
-require "abstract_controller/base"
-require "action_view"
+require 'active_support/concern'
+require 'active_support/core_ext/class/attribute'
 
 module AbstractController
   class DoubleRenderError < Error
@@ -10,91 +10,11 @@ module AbstractController
     end
   end
 
-  # This is a class to fix I18n global state. Whenever you provide I18n.locale during a request,
-  # it will trigger the lookup_context and consequently expire the cache.
-  class I18nProxy < ::I18n::Config #:nodoc:
-    attr_reader :original_config, :lookup_context
-
-    def initialize(original_config, lookup_context)
-      original_config = original_config.original_config if original_config.respond_to?(:original_config)
-      @original_config, @lookup_context = original_config, lookup_context
-    end
-
-    def locale
-      @original_config.locale
-    end
-
-    def locale=(value)
-      @lookup_context.locale = value
-    end
-  end
-
   module Rendering
     extend ActiveSupport::Concern
-    include AbstractController::ViewPaths
-
-    included do
-      class_attribute :protected_instance_variables
-      self.protected_instance_variables = []
-    end
-
-    # Overwrite process to setup I18n proxy.
-    def process(*) #:nodoc:
-      old_config, I18n.config = I18n.config, I18nProxy.new(I18n.config, lookup_context)
-      super
-    ensure
-      I18n.config = old_config
-    end
-
-    module ClassMethods
-      def view_context_class
-        @view_context_class ||= begin
-          routes = respond_to?(:_routes) && _routes
-          helpers = respond_to?(:_helpers) && _helpers
-
-          Class.new(ActionView::Base) do
-            if routes
-              include routes.url_helpers
-              include routes.mounted_helpers
-            end
-
-            if helpers
-              include helpers
-            end
-          end
-        end
-      end
-    end
-
-    attr_internal_writer :view_context_class
-
-    def view_context_class
-      @_view_context_class ||= self.class.view_context_class
-    end
-
-    # An instance of a view class. The default view class is ActionView::Base
-    #
-    # The view class must have the following methods:
-    # View.new[lookup_context, assigns, controller]
-    #   Create a new ActionView instance for a controller
-    # View#render[options]
-    #   Returns String with the rendered template
-    #
-    # Override this method in a module to change the default behavior.
-    def view_context
-      view_context_class.new(view_renderer, view_assigns, self)
-    end
 
-    # Returns an object that is able to render templates.
-    def view_renderer
-      @_view_renderer ||= ActionView::Renderer.new(lookup_context)
-    end
-
-    # Normalize arguments, options and then delegates render_to_body and
-    # sticks the result in self.response_body.
-    def render(*args, &block)
-      options = _normalize_render(*args, &block)
-      self.response_body = render_to_body(options)
+    def self.default_protected_instance_vars
+      super.concat [:@_action_name, :@_response_body, :@_formats, :@_prefixes, :@_config]
     end
 
     # Raw rendering of a template to a string.
@@ -109,88 +29,52 @@ module AbstractController
     # overridden in order to still return a string.
     # :api: plugin
     def render_to_string(*args, &block)
-      options = _normalize_render(*args, &block)
-      render_to_body(options)
     end
 
     # Raw rendering of a template.
     # :api: plugin
     def render_to_body(options = {})
-      _process_options(options)
-      _render_template(options)
     end
 
-    # Find and renders a template based on the options given.
-    # :api: private
-    def _render_template(options) #:nodoc:
-      lookup_context.rendered_format = nil if options[:formats]
-      view_renderer.render(view_context, options)
+    # Normalize arguments, options and then delegates render_to_body and
+    # sticks the result in self.response_body.
+    # :api: public
+    def render(*args, &block)
     end
 
-    DEFAULT_PROTECTED_INSTANCE_VARIABLES = [
-      :@_action_name, :@_response_body, :@_formats, :@_prefixes, :@_config,
-      :@_view_context_class, :@_view_renderer, :@_lookup_context
-    ]
+    # Return Content-Type of rendered content
+    # :api: public
+    def rendered_format
+    end
 
     # This method should return a hash with assigns.
     # You can overwrite this configuration per controller.
     # :api: public
     def view_assigns
       hash = {}
-      variables  = instance_variables
-      variables -= protected_instance_variables
-      variables -= DEFAULT_PROTECTED_INSTANCE_VARIABLES
-      variables.each { |name| hash[name[1..-1]] = instance_variable_get(name) }
+      (instance_variables - self.class.default_protected_instance_vars).each do |name|
+        hash[name[1..-1]] = instance_variable_get(name)
+      end
       hash
     end
 
-    private
-
-    # Normalize args and options.
-    # :api: private
-    def _normalize_render(*args, &block)
-      options = _normalize_args(*args, &block)
-      _normalize_options(options)
-      options
-    end
-
     # Normalize args by converting render "foo" to render :action => "foo" and
     # render "foo/bar" to render :file => "foo/bar".
     # :api: plugin
     def _normalize_args(action=nil, options={})
-      case action
-      when NilClass
-      when Hash
-        options = action
-      when String, Symbol
-        action = action.to_s
-        key = action.include?(?/) ? :file : :action
-        options[key] = action
-      else
-        options[:partial] = action
-      end
-
       options
     end
 
     # Normalize options.
     # :api: plugin
     def _normalize_options(options)
-      if options[:partial] == true
-        options[:partial] = action_name
-      end
-
-      if (options.keys & [:partial, :file, :template]).empty?
-        options[:prefixes] ||= _prefixes
-      end
-
-      options[:template] ||= (options[:action] || action_name).to_s
       options
     end
 
     # Process extra options.
     # :api: plugin
     def _process_options(options)
+      options
     end
   end
 end
diff --git a/actionpack/lib/abstract_controller/view_paths.rb b/actionpack/lib/abstract_controller/view_paths.rb
deleted file mode 100644
index c08b3a0e2a..0000000000
--- a/actionpack/lib/abstract_controller/view_paths.rb
+++ /dev/null
@@ -1,96 +0,0 @@
-require 'action_view/base'
-
-module AbstractController
-  module ViewPaths
-    extend ActiveSupport::Concern
-
-    included do
-      class_attribute :_view_paths
-      self._view_paths = ActionView::PathSet.new
-      self._view_paths.freeze
-    end
-
-    delegate :template_exists?, :view_paths, :formats, :formats=,
-             :locale, :locale=, :to => :lookup_context
-
-    module ClassMethods
-      def parent_prefixes
-        @parent_prefixes ||= begin
-          parent_controller = superclass
-          prefixes = []
-
-          until parent_controller.abstract?
-            prefixes << parent_controller.controller_path
-            parent_controller = parent_controller.superclass
-          end
-
-          prefixes
-        end
-      end
-    end
-
-    # The prefixes used in render "foo" shortcuts.
-    def _prefixes
-      @_prefixes ||= begin
-        parent_prefixes = self.class.parent_prefixes
-        parent_prefixes.dup.unshift(controller_path)
-      end
-    end
-
-    # LookupContext is the object responsible to hold all information required to lookup
-    # templates, i.e. view paths and details. Check ActionView::LookupContext for more
-    # information.
-    def lookup_context
-      @_lookup_context ||=
-        ActionView::LookupContext.new(self.class._view_paths, details_for_lookup, _prefixes)
-    end
-
-    def details_for_lookup
-      { }
-    end
-
-    def append_view_path(path)
-      lookup_context.view_paths.push(*path)
-    end
-
-    def prepend_view_path(path)
-      lookup_context.view_paths.unshift(*path)
-    end
-
-    module ClassMethods
-      # Append a path to the list of view paths for this controller.
-      #
-      # ==== Parameters
-      # * <tt>path</tt> - If a String is provided, it gets converted into
-      #   the default view path. You may also provide a custom view path
-      #   (see ActionView::PathSet for more information)
-      def append_view_path(path)
-        self._view_paths = view_paths + Array(path)
-      end
-
-      # Prepend a path to the list of view paths for this controller.
-      #
-      # ==== Parameters
-      # * <tt>path</tt> - If a String is provided, it gets converted into
-      #   the default view path. You may also provide a custom view path
-      #   (see ActionView::PathSet for more information)
-      def prepend_view_path(path)
-        self._view_paths = ActionView::PathSet.new(Array(path) + view_paths)
-      end
-
-      # A list of all of the default view paths for this controller.
-      def view_paths
-        _view_paths
-      end
-
-      # Set the view paths.
-      #
-      # ==== Parameters
-      # * <tt>paths</tt> - If a PathSet is provided, use that;
-      #   otherwise, process the parameter into a PathSet.
-      def view_paths=(paths)
-        self._view_paths = ActionView::PathSet.new(Array(paths))
-      end
-    end
-  end
-end
diff --git a/actionpack/lib/action_controller.rb b/actionpack/lib/action_controller.rb
index cc03da4904..d6b1908ccb 100644
--- a/actionpack/lib/action_controller.rb
+++ b/actionpack/lib/action_controller.rb
@@ -13,6 +13,7 @@ module ActionController
   autoload :Middleware
 
   autoload_under "metal" do
+    autoload :BasicRendering, 'action_controller/metal/rendering'
     autoload :Compatibility
     autoload :ConditionalGet
     autoload :Cookies
@@ -46,18 +47,9 @@ module ActionController
   def self.eager_load!
     super
     ActionController::Caching.eager_load!
-    HTML.eager_load!
   end
 end
 
-# All of these simply register additional autoloads
-require 'action_view'
-require 'action_view/vendor/html-scanner'
-
-ActiveSupport.on_load(:action_view) do
-  ActionView::RoutingUrlFor.send(:include, ActionDispatch::Routing::UrlFor)
-end
-
 # Common Active Support usage in Action Controller
 require 'active_support/core_ext/class/attribute_accessors'
 require 'active_support/core_ext/load_error'
diff --git a/actionpack/lib/action_controller/base.rb b/actionpack/lib/action_controller/base.rb
index 67d261db77..a00eafc9ed 100644
--- a/actionpack/lib/action_controller/base.rb
+++ b/actionpack/lib/action_controller/base.rb
@@ -2,6 +2,21 @@ require "action_controller/log_subscriber"
 require "action_controller/metal/params_wrapper"
 
 module ActionController
+  # The <tt>metal</tt> anonymous class was introduced to solve issue with including modules in <tt>ActionController::Base</tt>.
+  # Modules needes to be included in particluar order. First wee need to have <tt>AbstractController::Rendering</tt> included,
+  # next we should include actuall implementation which would be for example <tt>ActionView::Rendering</tt> and after that
+  # <tt>ActionController::Rendering</tt>. This order must be preserved and as we want to have middle module included dynamicaly
+  # <tt>metal</tt> class was introduced. It has <tt>AbstractController::Rendering</tt> included and is parent class of
+  # <tt>ActionController::Base</tt> which includes <tt>ActionController::Rendering</tt>. If we include <tt>ActionView::Rendering</tt>
+  # beetween them to perserve the required order, we can simply do this by:
+  #
+  #   ActionController::Base.superclass.send(:include, ActionView::Rendering)
+  #
+  metal = Class.new(Metal) do
+    include AbstractController::Rendering
+    include ActionController::BasicRendering
+  end
+
   # Action Controllers are the core of a web request in \Rails. They are made up of one or more actions that are executed
   # on request and then either it renders a template or redirects to another action. An action is defined as a public method
   # on the controller, which will automatically be made accessible to the web-server through \Rails Routes.
@@ -160,7 +175,7 @@ module ActionController
   #     render action: "overthere" # won't be called if monkeys is nil
   #   end
   #
-  class Base < Metal
+  class Base < metal
     abstract!
 
     # We document the request and response methods here because albeit they are
@@ -200,7 +215,6 @@ module ActionController
     end
 
     MODULES = [
-      AbstractController::Layouts,
       AbstractController::Translation,
       AbstractController::AssetPaths,
 
@@ -247,11 +261,12 @@ module ActionController
       include mod
     end
 
-    # Define some internal variables that should not be propagated to the view.
-    self.protected_instance_variables = [
-      :@_status, :@_headers, :@_params, :@_env, :@_response, :@_request,
-      :@_view_runtime, :@_stream, :@_url_options, :@_action_has_layout
-    ]
+    def self.default_protected_instance_vars
+      super.concat [
+        :@_status, :@_headers, :@_params, :@_env, :@_response, :@_request,
+        :@_view_runtime, :@_stream, :@_url_options, :@_action_has_layout
+      ]
+    end
 
     ActiveSupport.run_load_hooks(:action_controller, self)
   end
diff --git a/actionpack/lib/action_controller/metal/live.rb b/actionpack/lib/action_controller/metal/live.rb
index 8092fd639f..0dd788645b 100644
--- a/actionpack/lib/action_controller/metal/live.rb
+++ b/actionpack/lib/action_controller/metal/live.rb
@@ -1,5 +1,6 @@
 require 'action_dispatch/http/response'
 require 'delegate'
+require 'active_support/json'
 
 module ActionController
   # Mix this module in to your controller, and all actions in that controller
@@ -32,6 +33,79 @@ module ActionController
   # the main thread. Make sure your actions are thread safe, and this shouldn't
   # be a problem (don't share state across threads, etc).
   module Live
+    # This class provides the ability to write an SSE (Server Sent Event)
+    # to an IO stream. The class is initialized with a stream and can be used
+    # to either write a JSON string or an object which can be converted to JSON.
+    #
+    # Writing an object will convert it into standard SSE format with whatever
+    # options you have configured. You may choose to set the following options:
+    #
+    #   1) Event. If specified, an event with this name will be dispatched on
+    #   the browser.
+    #   2) Retry. The reconnection time in milliseconds used when attempting
+    #   to send the event.
+    #   3) Id. If the connection dies while sending an SSE to the browser, then
+    #   the server will receive a +Last-Event-ID+ header with value equal to +id+.
+    #
+    # After setting an option in the constructor of the SSE object, all future
+    # SSEs sent accross the stream will use those options unless overridden.
+    #
+    # Example Usage:
+    #
+    #   class MyController < ActionController::Base
+    #     include ActionController::Live
+    #
+    #     def index
+    #       response.headers['Content-Type'] = 'text/event-stream'
+    #       sse = SSE.new(response.stream, retry: 300, event: "event-name")
+    #       sse.write({ name: 'John'})
+    #       sse.write({ name: 'John'}, id: 10)
+    #       sse.write({ name: 'John'}, id: 10, event: "other-event")
+    #       sse.write({ name: 'John'}, id: 10, event: "other-event", retry: 500)
+    #     ensure
+    #       sse.close
+    #     end
+    #   end
+    #
+    # Note: SSEs are not currently supported by IE. However, they are supported
+    # by Chrome, Firefox, Opera, and Safari.
+    class SSE
+
+      WHITELISTED_OPTIONS = %w( retry event id )
+
+      def initialize(stream, options = {})
+        @stream = stream
+        @options = options
+      end
+
+      def close
+        @stream.close
+      end
+
+      def write(object, options = {})
+        case object
+        when String
+          perform_write(object, options)
+        else
+          perform_write(ActiveSupport::JSON.encode(object), options)
+        end
+      end
+
+      private
+
+        def perform_write(json, options)
+          current_options = @options.merge(options).stringify_keys
+
+          WHITELISTED_OPTIONS.each do |option_name|
+            if (option_value = current_options[option_name])
+              @stream.write "#{option_name}: #{option_value}\n"
+            end
+          end
+
+          @stream.write "data: #{json}\n\n"
+        end
+    end
+
     class Buffer < ActionDispatch::Response::Buffer #:nodoc:
       def initialize(response)
         @error_callback = nil
diff --git a/actionpack/lib/action_controller/metal/renderers.rb b/actionpack/lib/action_controller/metal/renderers.rb
index 5272dc6cdb..abed6e53cc 100644
--- a/actionpack/lib/action_controller/metal/renderers.rb
+++ b/actionpack/lib/action_controller/metal/renderers.rb
@@ -6,6 +6,13 @@ module ActionController
     Renderers.add(key, &block)
   end
 
+  class MissingRenderer < LoadError
+    def initialize(format)
+      @format = format
+      super("No renderer defined for format: #{@format}")
+    end
+  end
+
   module Renderers
     extend ActiveSupport::Concern
 
diff --git a/actionpack/lib/action_controller/metal/rendering.rb b/actionpack/lib/action_controller/metal/rendering.rb
index bea6b88f91..21224b9c3b 100644
--- a/actionpack/lib/action_controller/metal/rendering.rb
+++ b/actionpack/lib/action_controller/metal/rendering.rb
@@ -1,8 +1,38 @@
 module ActionController
-  module Rendering
+  # Basic rendering implements the most minimal rendering layer.
+  # It only supports rendering :text and :nothing. Passing any other option will
+  # result in `UnsupportedOperationError` exception. For more functionality like
+  # different formats, layouts etc. you should use `ActionView` gem.
+  module BasicRendering
     extend ActiveSupport::Concern
 
-    include AbstractController::Rendering
+    # Render text or nothing (empty string) to response_body
+    # :api: public
+    def render(*args, &block)
+      super(*args, &block)
+      opts = args.first
+      if opts.has_key?(:text) && opts[:text].present?
+        self.response_body = opts[:text]
+      elsif opts.has_key?(:nothing) && opts[:nothing]
+        self.response_body = " "
+      else
+        raise UnsupportedOperationError
+      end
+    end
+
+    def rendered_format
+      Mime::TEXT
+    end
+
+    class UnsupportedOperationError < StandardError
+      def initialize
+        super "Unsupported render operation. BasicRendering supports only :text and :nothing options. For more, you need to include ActionView."
+      end
+    end
+  end
+
+  module Rendering
+    extend ActiveSupport::Concern
 
     # Before processing, set the request formats in current controller formats.
     def process_action(*) #:nodoc:
@@ -12,17 +42,17 @@ module ActionController
 
     # Check for double render errors and set the content_type after rendering.
     def render(*args) #:nodoc:
-      raise ::AbstractController::DoubleRenderError if response_body
+      raise ::AbstractController::DoubleRenderError if self.response_body
       super
-      self.content_type ||= Mime[lookup_context.rendered_format].to_s
-      response_body
+      self.content_type ||= rendered_format.to_s
+      self.response_body
     end
 
     # Overwrite render_to_string because body can now be set to a rack body.
     def render_to_string(*)
       if self.response_body = super
         string = ""
-        response_body.each { |r| string << r }
+        self.response_body.each { |r| string << r }
         string
       end
     ensure
diff --git a/actionpack/lib/action_controller/metal/responder.rb b/actionpack/lib/action_controller/metal/responder.rb
index fd5b661209..66ff34a794 100644
--- a/actionpack/lib/action_controller/metal/responder.rb
+++ b/actionpack/lib/action_controller/metal/responder.rb
@@ -202,6 +202,7 @@ module ActionController #:nodoc:
     # This is the common behavior for formats associated with APIs, such as :xml and :json.
     def api_behavior(error)
       raise error unless resourceful?
+      raise MissingRenderer.new(format) unless has_renderer?
 
       if get?
         display resource
@@ -269,6 +270,11 @@ module ActionController #:nodoc:
       resource.respond_to?(:errors) && !resource.errors.empty?
     end
 
+    # Check whether the neceessary Renderer is available
+    def has_renderer?
+      Renderers::RENDERERS.include?(format)
+    end
+
     # By default, render the <code>:edit</code> action for HTML requests with errors, unless
     # the verb was POST.
     #
diff --git a/actionpack/lib/action_controller/metal/streaming.rb b/actionpack/lib/action_controller/metal/streaming.rb
index 73e9b5660d..62d5931b45 100644
--- a/actionpack/lib/action_controller/metal/streaming.rb
+++ b/actionpack/lib/action_controller/metal/streaming.rb
@@ -193,31 +193,29 @@ module ActionController #:nodoc:
   module Streaming
     extend ActiveSupport::Concern
 
-    include AbstractController::Rendering
-
     protected
 
-    # Set proper cache control and transfer encoding when streaming
-    def _process_options(options) #:nodoc:
-      super
-      if options[:stream]
-        if env["HTTP_VERSION"] == "HTTP/1.0"
-          options.delete(:stream)
-        else
-          headers["Cache-Control"] ||= "no-cache"
-          headers["Transfer-Encoding"] = "chunked"
-          headers.delete("Content-Length")
+      # Set proper cache control and transfer encoding when streaming
+      def _process_options(options) #:nodoc:
+        super
+        if options[:stream]
+          if env["HTTP_VERSION"] == "HTTP/1.0"
+            options.delete(:stream)
+          else
+            headers["Cache-Control"] ||= "no-cache"
+            headers["Transfer-Encoding"] = "chunked"
+            headers.delete("Content-Length")
+          end
         end
       end
-    end
 
-    # Call render_body if we are streaming instead of usual +render+.
-    def _render_template(options) #:nodoc:
-      if options.delete(:stream)
-        Rack::Chunked::Body.new view_renderer.render_body(view_context, options)
-      else
-        super
+      # Call render_body if we are streaming instead of usual +render+.
+      def _render_template(options) #:nodoc:
+        if options.delete(:stream)
+          Rack::Chunked::Body.new view_renderer.render_body(view_context, options)
+        else
+          super
+        end
       end
-    end
   end
 end
diff --git a/actionpack/lib/action_controller/metal/strong_parameters.rb b/actionpack/lib/action_controller/metal/strong_parameters.rb
index b279ef81a9..ae600b1ebe 100644
--- a/actionpack/lib/action_controller/metal/strong_parameters.rb
+++ b/actionpack/lib/action_controller/metal/strong_parameters.rb
@@ -298,7 +298,7 @@ module ActionController
     #   params.slice(:d)     # => {}
     def slice(*keys)
       self.class.new(super).tap do |new_instance|
-        new_instance.instance_variable_set :@permitted, @permitted
+        new_instance.permitted = @permitted
       end
     end
 
@@ -312,10 +312,15 @@ module ActionController
     #   copy_params.permitted?   # => true
     def dup
       super.tap do |duplicate|
-        duplicate.instance_variable_set :@permitted, @permitted
+        duplicate.permitted = @permitted
       end
     end
 
+    protected
+      def permitted=(new_permitted)
+        @permitted = new_permitted
+      end
+
     private
       def convert_hashes_to_parameters(key, value)
         if value.is_a?(Parameters) || !value.is_a?(Hash)
diff --git a/actionpack/lib/action_controller/railtie.rb b/actionpack/lib/action_controller/railtie.rb
index 5379547c57..0833e65d23 100644
--- a/actionpack/lib/action_controller/railtie.rb
+++ b/actionpack/lib/action_controller/railtie.rb
@@ -1,7 +1,6 @@
 require "rails"
 require "action_controller"
 require "action_dispatch/railtie"
-require "action_view/railtie"
 require "abstract_controller/railties/routes_helpers"
 require "action_controller/railties/helpers"
 
diff --git a/actionpack/lib/action_dispatch/http/parameters.rb b/actionpack/lib/action_dispatch/http/parameters.rb
index 8e992070f1..dcb299ed03 100644
--- a/actionpack/lib/action_dispatch/http/parameters.rb
+++ b/actionpack/lib/action_dispatch/http/parameters.rb
@@ -57,22 +57,25 @@ module ActionDispatch
       # you'll get a weird error down the road, but our form handling
       # should really prevent that from happening
       def normalize_encode_params(params)
-        if params.is_a?(String)
-          return params.force_encoding(Encoding::UTF_8).encode!
-        elsif !params.is_a?(Hash)
-          return params
-        end
-
-        new_hash = {}
-        params.each do |key, val|
-          new_key = key.is_a?(String) ? key.dup.force_encoding(Encoding::UTF_8).encode! : key
-          new_hash[new_key] = if val.is_a?(Array)
-            val.map! { |el| normalize_encode_params(el) }
+        case params
+        when String
+          params.force_encoding(Encoding::UTF_8).encode!
+        when Hash
+          if params.has_key?(:tempfile)
+            UploadedFile.new(params)
           else
-            normalize_encode_params(val)
+            params.each_with_object({}) do |(key, val), new_hash|
+              new_key = key.is_a?(String) ? key.dup.force_encoding(Encoding::UTF_8).encode! : key
+              new_hash[new_key] = if val.is_a?(Array)
+                val.map! { |el| normalize_encode_params(el) }
+              else
+                normalize_encode_params(val)
+              end
+            end.with_indifferent_access
           end
+        else
+          params
         end
-        new_hash.with_indifferent_access
       end
     end
   end
diff --git a/actionpack/lib/action_dispatch/http/request.rb b/actionpack/lib/action_dispatch/http/request.rb
index b4cf8ad2f7..aba8f66118 100644
--- a/actionpack/lib/action_dispatch/http/request.rb
+++ b/actionpack/lib/action_dispatch/http/request.rb
@@ -18,7 +18,6 @@ module ActionDispatch
     include ActionDispatch::Http::MimeNegotiation
     include ActionDispatch::Http::Parameters
     include ActionDispatch::Http::FilterParameters
-    include ActionDispatch::Http::Upload
     include ActionDispatch::Http::URL
 
     autoload :Session, 'action_dispatch/request/session'
diff --git a/actionpack/lib/action_dispatch/http/upload.rb b/actionpack/lib/action_dispatch/http/upload.rb
index b57c84dec8..a8d2dc3950 100644
--- a/actionpack/lib/action_dispatch/http/upload.rb
+++ b/actionpack/lib/action_dispatch/http/upload.rb
@@ -73,18 +73,5 @@ module ActionDispatch
         filename.force_encoding(Encoding::UTF_8).encode! if filename
       end
     end
-
-    module Upload # :nodoc:
-      # Replace file upload hash with UploadedFile objects
-      # when normalize and encode parameters.
-      def normalize_encode_params(value)
-        if Hash === value && value.has_key?(:tempfile)
-          UploadedFile.new(value)
-        else
-          super
-        end
-      end
-      private :normalize_encode_params
-    end
   end
 end
diff --git a/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb b/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb
index 64230ff1ae..0ca1a87645 100644
--- a/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb
+++ b/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb
@@ -34,27 +34,35 @@ module ActionDispatch
       log_error(env, wrapper)
 
       if env['action_dispatch.show_detailed_exceptions']
+        request = Request.new(env)
         template = ActionView::Base.new([RESCUES_TEMPLATE_PATH],
-          :request => Request.new(env),
-          :exception => wrapper.exception,
-          :application_trace => wrapper.application_trace,
-          :framework_trace => wrapper.framework_trace,
-          :full_trace => wrapper.full_trace,
-          :routes_inspector => routes_inspector(exception),
-          :source_extract => wrapper.source_extract,
-          :line_number => wrapper.line_number,
-          :file => wrapper.file
+          request: request,
+          exception: wrapper.exception,
+          application_trace: wrapper.application_trace,
+          framework_trace: wrapper.framework_trace,
+          full_trace: wrapper.full_trace,
+          routes_inspector: routes_inspector(exception),
+          source_extract: wrapper.source_extract,
+          line_number: wrapper.line_number,
+          file: wrapper.file
         )
         file = "rescues/#{wrapper.rescue_template}"
-        body = template.render(:template => file, :layout => 'rescues/layout')
-        render(wrapper.status_code, body)
+
+        if request.xhr?
+          body = template.render(template: file, layout: false, formats: [:text])
+          format = "text/plain"
+        else
+          body = template.render(template: file, layout: 'rescues/layout')
+          format = "text/html"
+        end
+        render(wrapper.status_code, body, format)
       else
         raise exception
       end
     end
 
-    def render(status, body)
-      [status, {'Content-Type' => "text/html; charset=#{Response.default_charset}", 'Content-Length' => body.bytesize.to_s}, [body]]
+    def render(status, body, format)
+      [status, {'Content-Type' => "#{format}; charset=#{Response.default_charset}", 'Content-Length' => body.bytesize.to_s}, [body]]
     end
 
     def log_error(env, wrapper)
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb
index db219c8fa9..db219c8fa9 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.text.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.text.erb
new file mode 100644
index 0000000000..396768ecee
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.text.erb
@@ -0,0 +1,23 @@
+<%
+  clean_params = @request.filtered_parameters.clone
+  clean_params.delete("action")
+  clean_params.delete("controller")
+
+  request_dump = clean_params.empty? ? 'None' : clean_params.inspect.gsub(',', ",\n")
+
+  def debug_hash(object)
+    object.to_hash.sort_by { |k, _| k.to_s }.map { |k, v| "#{k}: #{v.inspect rescue $!.message}" }.join("\n")
+  end unless self.class.method_defined?(:debug_hash)
+%>
+
+Request parameters
+<%= request_dump %>
+
+Session dump
+<%= debug_hash @request.session %>
+
+Env dump
+<%= debug_hash @request.env.slice(*@request.class::ENV_METHODS) %>
+
+Response headers
+<%= defined?(@response) ? @response.headers.inspect.gsub(',', ",\n") : 'None' %>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb
index b181909bff..b181909bff 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.text.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.text.erb
new file mode 100644
index 0000000000..d4af5c9b06
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/_trace.text.erb
@@ -0,0 +1,15 @@
+<%
+  traces = { "Application Trace" => @application_trace,
+             "Framework Trace"   => @framework_trace,
+             "Full Trace"        => @full_trace }
+%>
+
+Rails.root: <%= defined?(Rails) && Rails.respond_to?(:root) ? Rails.root : "unset" %>
+
+<% traces.each do |name, trace| %>
+<% if trace.any? %>
+<%= name %>
+<%= trace.join("\n") %>
+
+<% end %>
+<% end %>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
index 57a2940802..f154021ae6 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb
@@ -8,7 +8,7 @@
 </header>
 
 <div id="container">
-  <h2><%= @exception.message %></h2>
+  <h2><%= h @exception.message %></h2>
 
   <%= render template: "rescues/_source" %>
   <%= render template: "rescues/_trace" %>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.html.erb
index ca14215946..5c016e544e 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.html.erb
@@ -3,5 +3,5 @@
 </header>
 
 <div id="container">
-  <h2><%= @exception.message %></h2>
+  <h2><%= h @exception.message %></h2>
 </div>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.text.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.text.erb
new file mode 100644
index 0000000000..ae62d9eb02
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/missing_template.text.erb
@@ -0,0 +1,3 @@
+Template is missing
+
+<%= @exception.message %>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.html.erb
index cd3daff065..7e9cedb95e 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.html.erb
@@ -2,7 +2,7 @@
   <h1>Routing Error</h1>
 </header>
 <div id="container">
-  <h2><%= @exception.message %></h2>
+  <h2><%= h @exception.message %></h2>
   <% unless @exception.failures.empty? %>
     <p>
       <h2>Failure reasons:</h2>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.text.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.text.erb
new file mode 100644
index 0000000000..f6e4dac1f3
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/routing_error.text.erb
@@ -0,0 +1,11 @@
+Routing Error
+
+<%= @exception.message %>
+<% unless @exception.failures.empty? %>
+Failure reasons:
+<% @exception.failures.each do |route, reason| %>
+  - <%= route.inspect.delete('\\') %></code> failed because <%= reason.downcase %>
+<% end %>
+<% end %>
+
+<%= render template: "rescues/_trace", format: :text %>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.html.erb
index 31f46ee340..027a0f5b3e 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.html.erb
@@ -10,7 +10,7 @@
   <p>
     Showing <i><%= @exception.file_name %></i> where line <b>#<%= @exception.line_number %></b> raised:
   </p>
-  <pre><code><%= @exception.message %></code></pre>
+  <pre><code><%= h @exception.message %></code></pre>
 
   <div class="source">
     <div class="info">
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.text.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.text.erb
new file mode 100644
index 0000000000..5da21d9784
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/template_error.text.erb
@@ -0,0 +1,8 @@
+<% @source_extract = @exception.source_extract(0, :html) %>
+<%= @exception.original_exception.class.to_s %> in <%= @request.parameters["controller"].camelize if @request.parameters["controller"] %>#<%= @request.parameters["action"] %>
+
+Showing <%= @exception.file_name %> where line #<%= @exception.line_number %> raised:
+<%= @exception.message %>
+<%= @exception.sub_template_message %>
+<%= render template: "rescues/_trace", format: :text %>
+<%= render template: "rescues/_request_and_response", format: :text %>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.html.erb
index c1fbf67eed..259fb2bb3b 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.html.erb
@@ -2,5 +2,5 @@
   <h1>Unknown action</h1>
 </header>
 <div id="container">
-  <h2><%= @exception.message %></h2>
+  <h2><%= h @exception.message %></h2>
 </div>
diff --git a/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.text.erb b/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.text.erb
new file mode 100644
index 0000000000..83973addcb
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/templates/rescues/unknown_action.text.erb
@@ -0,0 +1,3 @@
+Unknown action
+
+<%= @exception.message %>
diff --git a/actionpack/test/abstract/abstract_controller_test.rb b/actionpack/test/abstract/abstract_controller_test.rb
deleted file mode 100644
index eb9143c8f6..0000000000
--- a/actionpack/test/abstract/abstract_controller_test.rb
+++ /dev/null
@@ -1,261 +0,0 @@
-require 'abstract_unit'
-require 'set'
-
-module AbstractController
-  module Testing
-
-    # Test basic dispatching.
-    # ====
-    # * Call process
-    # * Test that the response_body is set correctly
-    class SimpleController < AbstractController::Base
-    end
-
-    class Me < SimpleController
-      def index
-        self.response_body = "Hello world"
-        "Something else"
-      end
-    end
-
-    class TestBasic < ActiveSupport::TestCase
-      test "dispatching works" do
-        controller = Me.new
-        controller.process(:index)
-        assert_equal "Hello world", controller.response_body
-      end
-    end
-
-    # Test Render mixin
-    # ====
-    class RenderingController < AbstractController::Base
-      include AbstractController::Rendering
-
-      def _prefixes
-        []
-      end
-
-      def render(options = {})
-        if options.is_a?(String)
-          options = {:_template_name => options}
-        end
-        super
-      end
-
-      append_view_path File.expand_path(File.join(File.dirname(__FILE__), "views"))
-    end
-
-    class Me2 < RenderingController
-      def index
-        render "index.erb"
-      end
-
-      def index_to_string
-        self.response_body = render_to_string "index"
-      end
-
-      def action_with_ivars
-        @my_ivar = "Hello"
-        render "action_with_ivars.erb"
-      end
-
-      def naked_render
-        render
-      end
-
-      def rendering_to_body
-        self.response_body = render_to_body :template => "naked_render"
-      end
-
-      def rendering_to_string
-        self.response_body = render_to_string :template => "naked_render"
-      end
-    end
-
-    class TestRenderingController < ActiveSupport::TestCase
-      def setup
-        @controller = Me2.new
-      end
-
-      test "rendering templates works" do
-        @controller.process(:index)
-        assert_equal "Hello from index.erb", @controller.response_body
-      end
-
-      test "render_to_string works with a String as an argument" do
-        @controller.process(:index_to_string)
-        assert_equal "Hello from index.erb", @controller.response_body
-      end
-
-      test "rendering passes ivars to the view" do
-        @controller.process(:action_with_ivars)
-        assert_equal "Hello from index_with_ivars.erb", @controller.response_body
-      end
-
-      test "rendering with no template name" do
-        @controller.process(:naked_render)
-        assert_equal "Hello from naked_render.erb", @controller.response_body
-      end
-
-      test "rendering to a rack body" do
-        @controller.process(:rendering_to_body)
-        assert_equal "Hello from naked_render.erb", @controller.response_body
-      end
-
-      test "rendering to a string" do
-        @controller.process(:rendering_to_string)
-        assert_equal "Hello from naked_render.erb", @controller.response_body
-      end
-    end
-
-    # Test rendering with prefixes
-    # ====
-    # * self._prefix is used when defined
-    class PrefixedViews < RenderingController
-      private
-      def self.prefix
-        name.underscore
-      end
-
-      def _prefixes
-        [self.class.prefix]
-      end
-    end
-
-    class Me3 < PrefixedViews
-      def index
-        render
-      end
-
-      def formatted
-        self.formats = [:html]
-        render
-      end
-    end
-
-    class TestPrefixedViews < ActiveSupport::TestCase
-      def setup
-        @controller = Me3.new
-      end
-
-      test "templates are located inside their 'prefix' folder" do
-        @controller.process(:index)
-        assert_equal "Hello from me3/index.erb", @controller.response_body
-      end
-
-      test "templates included their format" do
-        @controller.process(:formatted)
-        assert_equal "Hello from me3/formatted.html.erb", @controller.response_body
-      end
-    end
-
-    # Test rendering with layouts
-    # ====
-    # self._layout is used when defined
-    class WithLayouts < PrefixedViews
-      include AbstractController::Layouts
-
-      private
-      def self.layout(formats)
-        find_template(name.underscore, {:formats => formats}, :_prefixes => ["layouts"])
-      rescue ActionView::MissingTemplate
-        begin
-          find_template("application", {:formats => formats}, :_prefixes => ["layouts"])
-        rescue ActionView::MissingTemplate
-        end
-      end
-
-      def render_to_body(options = {})
-        options[:_layout] = options[:layout] || _default_layout({})
-        super
-      end
-    end
-
-    class Me4 < WithLayouts
-      def index
-        render
-      end
-    end
-
-    class TestLayouts < ActiveSupport::TestCase
-      test "layouts are included" do
-        controller = Me4.new
-        controller.process(:index)
-        assert_equal "Me4 Enter : Hello from me4/index.erb : Exit", controller.response_body
-      end
-    end
-
-    # respond_to_action?(action_name)
-    # ====
-    # * A method can be used as an action only if this method
-    #   returns true when passed the method name as an argument
-    # * Defaults to true in AbstractController
-    class DefaultRespondToActionController < AbstractController::Base
-      def index() self.response_body = "success" end
-    end
-
-    class ActionMissingRespondToActionController < AbstractController::Base
-      # No actions
-    private
-      def action_missing(action_name)
-        self.response_body = "success"
-      end
-    end
-
-    class RespondToActionController < AbstractController::Base;
-      def index() self.response_body = "success" end
-
-      def fail()  self.response_body = "fail"    end
-
-    private
-
-      def method_for_action(action_name)
-        action_name.to_s != "fail" && action_name
-      end
-    end
-
-    class TestRespondToAction < ActiveSupport::TestCase
-
-      def assert_dispatch(klass, body = "success", action = :index)
-        controller = klass.new
-        controller.process(action)
-        assert_equal body, controller.response_body
-      end
-
-      test "an arbitrary method is available as an action by default" do
-        assert_dispatch DefaultRespondToActionController, "success", :index
-      end
-
-      test "raises ActionNotFound when method does not exist and action_missing is not defined" do
-        assert_raise(ActionNotFound) { DefaultRespondToActionController.new.process(:fail) }
-      end
-
-      test "dispatches to action_missing when method does not exist and action_missing is defined" do
-        assert_dispatch ActionMissingRespondToActionController, "success", :ohai
-      end
-
-      test "a method is available as an action if method_for_action returns true" do
-        assert_dispatch RespondToActionController, "success", :index
-      end
-
-      test "raises ActionNotFound if method is defined but method_for_action returns false" do
-        assert_raise(ActionNotFound) { RespondToActionController.new.process(:fail) }
-      end
-    end
-
-    class Me6 < AbstractController::Base
-      self.action_methods
-
-      def index
-      end
-    end
-
-    class TestActionMethodsReloading < ActiveSupport::TestCase
-
-      test "action_methods should be reloaded after defining a new method" do
-        assert_equal Set.new(["index"]), Me6.action_methods
-      end
-    end
-
-  end
-end
diff --git a/actionpack/test/abstract/helper_test.rb b/actionpack/test/abstract/helper_test.rb
deleted file mode 100644
index bc3e34684c..0000000000
--- a/actionpack/test/abstract/helper_test.rb
+++ /dev/null
@@ -1,126 +0,0 @@
-require 'abstract_unit'
-
-ActionController::Base.helpers_path = File.expand_path('../../fixtures/helpers', __FILE__)
-
-module AbstractController
-  module Testing
-
-    class ControllerWithHelpers < AbstractController::Base
-      include AbstractController::Rendering
-      include AbstractController::Helpers
-
-      def with_module
-        render :inline => "Module <%= included_method %>"
-      end
-    end
-
-    module HelperyTest
-      def included_method
-        "Included"
-      end
-    end
-
-    class AbstractHelpers < ControllerWithHelpers
-      helper(HelperyTest) do
-        def helpery_test
-          "World"
-        end
-      end
-
-      helper :abc
-
-      def with_block
-        render :inline => "Hello <%= helpery_test %>"
-      end
-
-      def with_symbol
-        render :inline => "I respond to bare_a: <%= respond_to?(:bare_a) %>"
-      end
-    end
-
-    class ::HelperyTestController < AbstractHelpers
-      clear_helpers
-    end
-
-    class AbstractHelpersBlock < ControllerWithHelpers
-      helper do
-        include AbstractController::Testing::HelperyTest
-      end
-    end
-
-    class AbstractInvalidHelpers < AbstractHelpers
-      include ActionController::Helpers
-
-      path = File.join(File.expand_path('../../fixtures', __FILE__), "helpers_missing")
-      $:.unshift(path)
-      self.helpers_path = path
-    end
-
-    class TestHelpers < ActiveSupport::TestCase
-      def setup
-        @controller = AbstractHelpers.new
-      end
-
-      def test_helpers_with_block
-        @controller.process(:with_block)
-        assert_equal "Hello World", @controller.response_body
-      end
-
-      def test_helpers_with_module
-        @controller.process(:with_module)
-        assert_equal "Module Included", @controller.response_body
-      end
-
-      def test_helpers_with_symbol
-        @controller.process(:with_symbol)
-        assert_equal "I respond to bare_a: true", @controller.response_body
-      end
-
-      def test_declare_missing_helper
-        AbstractHelpers.helper :missing
-        flunk "should have raised an exception"
-      rescue LoadError => e
-        assert_equal "helpers/missing_helper.rb", e.path
-      end
-
-      def test_helpers_with_module_through_block
-        @controller = AbstractHelpersBlock.new
-        @controller.process(:with_module)
-        assert_equal "Module Included", @controller.response_body
-      end
-    end
-
-    class ClearHelpersTest < ActiveSupport::TestCase
-      def setup
-        @controller = HelperyTestController.new
-      end
-
-      def test_clears_up_previous_helpers
-        @controller.process(:with_symbol)
-        assert_equal "I respond to bare_a: false", @controller.response_body
-      end
-
-      def test_includes_controller_default_helper
-        @controller.process(:with_block)
-        assert_equal "Hello Default", @controller.response_body
-      end
-    end
-
-    class InvalidHelpersTest < ActiveSupport::TestCase
-      def test_controller_raise_error_about_real_require_problem
-        e = assert_raise(LoadError) { AbstractInvalidHelpers.helper(:invalid_require) }
-        assert_equal "No such file to load -- very_invalid_file_name", e.message
-      end
-
-      def test_controller_raise_error_about_missing_helper
-        e = assert_raise(AbstractController::Helpers::MissingHelperError) { AbstractInvalidHelpers.helper(:missing) }
-        assert_equal "Missing helper file helpers/missing_helper.rb", e.message
-      end
-
-      def test_missing_helper_error_has_the_right_path
-        e = assert_raise(AbstractController::Helpers::MissingHelperError) { AbstractInvalidHelpers.helper(:missing) }
-        assert_equal "helpers/missing_helper.rb", e.path
-      end
-    end
-  end
-end
diff --git a/actionpack/test/abstract/layouts_test.rb b/actionpack/test/abstract/layouts_test.rb
deleted file mode 100644
index 4a05c00f8b..0000000000
--- a/actionpack/test/abstract/layouts_test.rb
+++ /dev/null
@@ -1,383 +0,0 @@
-require 'abstract_unit'
-
-module AbstractControllerTests
-  module Layouts
-
-    # Base controller for these tests
-    class Base < AbstractController::Base
-      include AbstractController::Rendering
-      include AbstractController::Layouts
-
-      abstract!
-
-      self.view_paths = [ActionView::FixtureResolver.new(
-        "layouts/hello.erb"             => "With String <%= yield %>",
-        "layouts/hello_override.erb"    => "With Override <%= yield %>",
-        "layouts/overwrite.erb"         => "Overwrite <%= yield %>",
-        "layouts/with_false_layout.erb" => "False Layout <%= yield %>",
-        "abstract_controller_tests/layouts/with_string_implied_child.erb" =>
-                                           "With Implied <%= yield %>",
-        "abstract_controller_tests/layouts/with_grand_child_of_implied.erb" =>
-                                           "With Grand Child <%= yield %>"
-
-      )]
-    end
-
-    class Blank < Base
-      self.view_paths = []
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello blank!")
-      end
-    end
-
-    class WithString < Base
-      layout "hello"
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello string!")
-      end
-
-      def overwrite_default
-        render :template => ActionView::Template::Text.new("Hello string!"), :layout => :default
-      end
-
-      def overwrite_false
-        render :template => ActionView::Template::Text.new("Hello string!"), :layout => false
-      end
-
-      def overwrite_string
-        render :template => ActionView::Template::Text.new("Hello string!"), :layout => "overwrite"
-      end
-
-      def overwrite_skip
-        render :text => "Hello text!"
-      end
-    end
-
-    class WithStringChild < WithString
-    end
-
-    class WithStringOverriddenChild < WithString
-      layout "hello_override"
-    end
-
-    class WithStringImpliedChild < WithString
-      layout nil
-    end
-
-    class WithChildOfImplied < WithStringImpliedChild
-    end
-
-    class WithGrandChildOfImplied < WithStringImpliedChild
-      layout nil
-    end
-
-    class WithProc < Base
-      layout proc { "overwrite" }
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello proc!")
-      end
-    end
-
-    class WithProcReturningNil < Base
-      layout proc { nil }
-
-      def index
-        render template: ActionView::Template::Text.new("Hello nil!")
-      end
-    end
-
-    class WithZeroArityProc < Base
-      layout proc { "overwrite" }
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello zero arity proc!")
-      end
-    end
-
-    class WithProcInContextOfInstance < Base
-      def an_instance_method; end
-
-      layout proc {
-        break unless respond_to? :an_instance_method
-        "overwrite"
-      }
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello again zero arity proc!")
-      end
-    end
-
-    class WithSymbol < Base
-      layout :hello
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello symbol!")
-      end
-    private
-      def hello
-        "overwrite"
-      end
-    end
-
-    class WithSymbolReturningNil < Base
-      layout :nilz
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello nilz!")
-      end
-
-      def nilz() end
-    end
-
-    class WithSymbolReturningObj < Base
-      layout :objekt
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello nilz!")
-      end
-
-      def objekt
-        Object.new
-      end
-    end
-
-    class WithSymbolAndNoMethod < Base
-      layout :no_method
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello boom!")
-      end
-    end
-
-    class WithMissingLayout < Base
-      layout "missing"
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello missing!")
-      end
-    end
-
-    class WithFalseLayout < Base
-      layout false
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello false!")
-      end
-    end
-
-    class WithNilLayout < Base
-      layout nil
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello nil!")
-      end
-    end
-
-    class WithOnlyConditional < WithStringImpliedChild
-      layout "overwrite", :only => :show
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello index!")
-      end
-
-      def show
-        render :template => ActionView::Template::Text.new("Hello show!")
-      end
-    end
-
-    class WithExceptConditional < WithStringImpliedChild
-      layout "overwrite", :except => :show
-
-      def index
-        render :template => ActionView::Template::Text.new("Hello index!")
-      end
-
-      def show
-        render :template => ActionView::Template::Text.new("Hello show!")
-      end
-    end
-
-    class TestBase < ActiveSupport::TestCase
-      test "when no layout is specified, and no default is available, render without a layout" do
-        controller = Blank.new
-        controller.process(:index)
-        assert_equal "Hello blank!", controller.response_body
-      end
-
-      test "when layout is specified as a string, render with that layout" do
-        controller = WithString.new
-        controller.process(:index)
-        assert_equal "With String Hello string!", controller.response_body
-      end
-
-      test "when layout is overwriten by :default in render, render default layout" do
-        controller = WithString.new
-        controller.process(:overwrite_default)
-        assert_equal "With String Hello string!", controller.response_body
-      end
-
-      test "when layout is overwriten by string in render, render new layout" do
-        controller = WithString.new
-        controller.process(:overwrite_string)
-        assert_equal "Overwrite Hello string!", controller.response_body
-      end
-
-      test "when layout is overwriten by false in render, render no layout" do
-        controller = WithString.new
-        controller.process(:overwrite_false)
-        assert_equal "Hello string!", controller.response_body
-      end
-
-      test "when text is rendered, render no layout" do
-        controller = WithString.new
-        controller.process(:overwrite_skip)
-        assert_equal "Hello text!", controller.response_body
-      end
-
-      test "when layout is specified as a string, but the layout is missing, raise an exception" do
-        assert_raises(ActionView::MissingTemplate) { WithMissingLayout.new.process(:index) }
-      end
-
-      test "when layout is specified as false, do not use a layout" do
-        controller = WithFalseLayout.new
-        controller.process(:index)
-        assert_equal "Hello false!", controller.response_body
-      end
-
-      test "when layout is specified as nil, do not use a layout" do
-        controller = WithNilLayout.new
-        controller.process(:index)
-        assert_equal "Hello nil!", controller.response_body
-      end
-
-      test "when layout is specified as a proc, do not leak any methods into controller's action_methods" do
-        assert_equal Set.new(['index']), WithProc.action_methods
-      end
-
-      test "when layout is specified as a proc, call it and use the layout returned" do
-        controller = WithProc.new
-        controller.process(:index)
-        assert_equal "Overwrite Hello proc!", controller.response_body
-      end
-
-      test "when layout is specified as a proc and the proc retuns nil, don't use a layout" do
-        controller = WithProcReturningNil.new
-        controller.process(:index)
-        assert_equal "Hello nil!", controller.response_body
-      end
-
-      test "when layout is specified as a proc without parameters it works just the same" do
-        controller = WithZeroArityProc.new
-        controller.process(:index)
-        assert_equal "Overwrite Hello zero arity proc!", controller.response_body
-      end
-
-      test "when layout is specified as a proc without parameters the block is evaluated in the context of an instance" do
-        controller = WithProcInContextOfInstance.new
-        controller.process(:index)
-        assert_equal "Overwrite Hello again zero arity proc!", controller.response_body
-      end
-
-      test "when layout is specified as a symbol, call the requested method and use the layout returned" do
-        controller = WithSymbol.new
-        controller.process(:index)
-        assert_equal "Overwrite Hello symbol!", controller.response_body
-      end
-
-      test "when layout is specified as a symbol and the method returns nil, don't use a layout" do
-        controller = WithSymbolReturningNil.new
-        controller.process(:index)
-        assert_equal "Hello nilz!", controller.response_body
-      end
-
-      test "when the layout is specified as a symbol and the method doesn't exist, raise an exception" do
-        assert_raises(NameError) { WithSymbolAndNoMethod.new.process(:index) }
-      end
-
-      test "when the layout is specified as a symbol and the method returns something besides a string/false/nil, raise an exception" do
-        assert_raises(ArgumentError) { WithSymbolReturningObj.new.process(:index) }
-      end
-
-      test "when a child controller does not have a layout, use the parent controller layout" do
-        controller = WithStringChild.new
-        controller.process(:index)
-        assert_equal "With String Hello string!", controller.response_body
-      end
-
-      test "when a child controller has specified a layout, use that layout and not the parent controller layout" do
-        controller = WithStringOverriddenChild.new
-        controller.process(:index)
-        assert_equal "With Override Hello string!", controller.response_body
-      end
-
-      test "when a child controller has an implied layout, use that layout and not the parent controller layout" do
-        controller = WithStringImpliedChild.new
-        controller.process(:index)
-        assert_equal "With Implied Hello string!", controller.response_body
-      end
-
-      test "when a grandchild has no layout specified, the child has an implied layout, and the " \
-        "parent has specified a layout, use the child controller layout" do
-          controller = WithChildOfImplied.new
-          controller.process(:index)
-          assert_equal "With Implied Hello string!", controller.response_body
-      end
-
-      test "when a grandchild has nil layout specified, the child has an implied layout, and the " \
-        "parent has specified a layout, use the child controller layout" do
-          controller = WithGrandChildOfImplied.new
-          controller.process(:index)
-          assert_equal "With Grand Child Hello string!", controller.response_body
-      end
-
-      test "raises an exception when specifying layout true" do
-        assert_raises ArgumentError do
-          Object.class_eval do
-            class ::BadFailLayout < AbstractControllerTests::Layouts::Base
-              layout true
-            end
-          end
-        end
-      end
-
-      test "when specify an :only option which match current action name" do
-        controller = WithOnlyConditional.new
-        controller.process(:show)
-        assert_equal "Overwrite Hello show!", controller.response_body
-      end
-
-      test "when specify an :only option which does not match current action name" do
-        controller = WithOnlyConditional.new
-        controller.process(:index)
-        assert_equal "With Implied Hello index!", controller.response_body
-      end
-
-      test "when specify an :except option which match current action name" do
-        controller = WithExceptConditional.new
-        controller.process(:show)
-        assert_equal "With Implied Hello show!", controller.response_body
-      end
-
-      test "when specify an :except option which does not match current action name" do
-        controller = WithExceptConditional.new
-        controller.process(:index)
-        assert_equal "Overwrite Hello index!", controller.response_body
-      end
-
-      test "layout for anonymous controller" do
-        klass = Class.new(WithString) do
-          def index
-            render :text => 'index', :layout => true
-          end
-        end
-
-        controller = klass.new
-        controller.process(:index)
-        assert_equal "With String index", controller.response_body
-      end
-    end
-  end
-end
diff --git a/actionpack/test/abstract/render_test.rb b/actionpack/test/abstract/render_test.rb
deleted file mode 100644
index b9293d1241..0000000000
--- a/actionpack/test/abstract/render_test.rb
+++ /dev/null
@@ -1,102 +0,0 @@
-require 'abstract_unit'
-
-module AbstractController
-  module Testing
-
-    class ControllerRenderer < AbstractController::Base
-      include AbstractController::Rendering
-
-      def _prefixes
-        %w[renderer]
-      end
-
-      self.view_paths = [ActionView::FixtureResolver.new(
-        "template.erb" => "With Template",
-        "renderer/default.erb" => "With Default",
-        "renderer/string.erb" => "With String",
-        "renderer/symbol.erb" => "With Symbol",
-        "string/with_path.erb" => "With String With Path",
-        "some/file.erb" => "With File"
-      )]
-
-      def template
-        render :template => "template"
-      end
-
-      def file
-        render :file => "some/file"
-      end
-
-      def inline
-        render :inline => "With <%= :Inline %>"
-      end
-
-      def text
-        render :text => "With Text"
-      end
-
-      def default
-        render
-      end
-
-      def string
-        render "string"
-      end
-
-      def string_with_path
-        render "string/with_path"
-      end
-
-      def symbol
-        render :symbol
-      end
-    end
-
-    class TestRenderer < ActiveSupport::TestCase
-
-      def setup
-        @controller = ControllerRenderer.new
-      end
-
-      def test_render_template
-        @controller.process(:template)
-        assert_equal "With Template", @controller.response_body
-      end
-
-      def test_render_file
-        @controller.process(:file)
-        assert_equal "With File", @controller.response_body
-      end
-
-      def test_render_inline
-        @controller.process(:inline)
-        assert_equal "With Inline", @controller.response_body
-      end
-
-      def test_render_text
-        @controller.process(:text)
-        assert_equal "With Text", @controller.response_body
-      end
-
-      def test_render_default
-        @controller.process(:default)
-        assert_equal "With Default", @controller.response_body
-      end
-
-      def test_render_string
-        @controller.process(:string)
-        assert_equal "With String", @controller.response_body
-      end
-
-      def test_render_symbol
-        @controller.process(:symbol)
-        assert_equal "With Symbol", @controller.response_body
-      end
-
-      def test_render_string_with_path
-        @controller.process(:string_with_path)
-        assert_equal "With String With Path", @controller.response_body
-      end
-    end
-  end
-end
diff --git a/actionpack/test/abstract/views/abstract_controller/testing/me3/formatted.html.erb b/actionpack/test/abstract/views/abstract_controller/testing/me3/formatted.html.erb
deleted file mode 100644
index 785bf69191..0000000000
--- a/actionpack/test/abstract/views/abstract_controller/testing/me3/formatted.html.erb
+++ /dev/null
@@ -1 +0,0 @@
-Hello from me3/formatted.html.erb
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/abstract_controller/testing/me3/index.erb b/actionpack/test/abstract/views/abstract_controller/testing/me3/index.erb
deleted file mode 100644
index f079ad8204..0000000000
--- a/actionpack/test/abstract/views/abstract_controller/testing/me3/index.erb
+++ /dev/null
@@ -1 +0,0 @@
-Hello from me3/index.erb
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/abstract_controller/testing/me4/index.erb b/actionpack/test/abstract/views/abstract_controller/testing/me4/index.erb
deleted file mode 100644
index 89dce12bdc..0000000000
--- a/actionpack/test/abstract/views/abstract_controller/testing/me4/index.erb
+++ /dev/null
@@ -1 +0,0 @@
-Hello from me4/index.erb
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/abstract_controller/testing/me5/index.erb b/actionpack/test/abstract/views/abstract_controller/testing/me5/index.erb
deleted file mode 100644
index 84d0b7417e..0000000000
--- a/actionpack/test/abstract/views/abstract_controller/testing/me5/index.erb
+++ /dev/null
@@ -1 +0,0 @@
-Hello from me5/index.erb
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/action_with_ivars.erb b/actionpack/test/abstract/views/action_with_ivars.erb
deleted file mode 100644
index 8d8ae22fd7..0000000000
--- a/actionpack/test/abstract/views/action_with_ivars.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= @my_ivar %> from index_with_ivars.erb
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/helper_test.erb b/actionpack/test/abstract/views/helper_test.erb
deleted file mode 100644
index 8ae45cc195..0000000000
--- a/actionpack/test/abstract/views/helper_test.erb
+++ /dev/null
@@ -1 +0,0 @@
-Hello <%= helpery_test %> : <%= included_method %>
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/index.erb b/actionpack/test/abstract/views/index.erb
deleted file mode 100644
index cc1a8b8c85..0000000000
--- a/actionpack/test/abstract/views/index.erb
+++ /dev/null
@@ -1 +0,0 @@
-Hello from index.erb
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/layouts/abstract_controller/testing/me4.erb b/actionpack/test/abstract/views/layouts/abstract_controller/testing/me4.erb
deleted file mode 100644
index 172dd56569..0000000000
--- a/actionpack/test/abstract/views/layouts/abstract_controller/testing/me4.erb
+++ /dev/null
@@ -1 +0,0 @@
-Me4 Enter : <%= yield %> : Exit
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/layouts/application.erb b/actionpack/test/abstract/views/layouts/application.erb
deleted file mode 100644
index 27317140ad..0000000000
--- a/actionpack/test/abstract/views/layouts/application.erb
+++ /dev/null
@@ -1 +0,0 @@
-Application Enter : <%= yield %> : Exit
\ No newline at end of file
diff --git a/actionpack/test/abstract/views/naked_render.erb b/actionpack/test/abstract/views/naked_render.erb
deleted file mode 100644
index 1b3d03878b..0000000000
--- a/actionpack/test/abstract/views/naked_render.erb
+++ /dev/null
@@ -1 +0,0 @@
-Hello from naked_render.erb
\ No newline at end of file
diff --git a/actionpack/test/abstract_unit.rb b/actionpack/test/abstract_unit.rb
index 8213997f4e..a0d90f7eee 100644
--- a/actionpack/test/abstract_unit.rb
+++ b/actionpack/test/abstract_unit.rb
@@ -64,28 +64,6 @@ module RackTestUtils
   extend self
 end
 
-module RenderERBUtils
-  def view
-    @view ||= begin
-      path = ActionView::FileSystemResolver.new(FIXTURE_LOAD_PATH)
-      view_paths = ActionView::PathSet.new([path])
-      ActionView::Base.new(view_paths)
-    end
-  end
-
-  def render_erb(string)
-    @virtual_path = nil
-
-    template = ActionView::Template.new(
-      string.strip,
-      "test template",
-      ActionView::Template::Handlers::ERB,
-      {})
-
-    template.render(self, {}).strip
-  end
-end
-
 SharedTestRoutes = ActionDispatch::Routing::RouteSet.new
 
 module ActionDispatch
@@ -268,6 +246,8 @@ class Rack::TestCase < ActionDispatch::IntegrationTest
   end
 end
 
+ActionController::Base.superclass.send(:include, ActionView::Layouts)
+
 module ActionController
   class Base
     include ActionController::Testing
@@ -290,15 +270,8 @@ module ActionController
   end
 end
 
-class ::ApplicationController < ActionController::Base
-end
 
-module ActionView
-  class TestCase
-    # Must repeat the setup because AV::TestCase is a duplication
-    # of AC::TestCase
-    include ActionDispatch::SharedRoutes
-  end
+class ::ApplicationController < ActionController::Base
 end
 
 class Workshop
diff --git a/actionpack/test/controller/assert_select_test.rb b/actionpack/test/controller/assert_select_test.rb
index 3d667f0a2f..114bbf3c22 100644
--- a/actionpack/test/controller/assert_select_test.rb
+++ b/actionpack/test/controller/assert_select_test.rb
@@ -8,6 +8,9 @@ require 'abstract_unit'
 require 'controller/fake_controllers'
 
 require 'action_mailer'
+require 'action_view'
+
+ActionMailer::Base.send(:include, ActionView::Layouts)
 ActionMailer::Base.view_paths = FIXTURE_LOAD_PATH
 
 class AssertSelectTest < ActionController::TestCase
diff --git a/actionpack/test/controller/capture_test.rb b/actionpack/test/controller/capture_test.rb
deleted file mode 100644
index 72263156d9..0000000000
--- a/actionpack/test/controller/capture_test.rb
+++ /dev/null
@@ -1,79 +0,0 @@
-require 'abstract_unit'
-require 'active_support/logger'
-
-class CaptureController < ActionController::Base
-  def self.controller_name; "test"; end
-  def self.controller_path; "test"; end
-
-  def content_for
-    @title = nil
-    render :layout => "talk_from_action"
-  end
-
-  def content_for_with_parameter
-    @title = nil
-    render :layout => "talk_from_action"
-  end
-
-  def content_for_concatenated
-    @title = nil
-    render :layout => "talk_from_action"
-  end
-
-  def non_erb_block_content_for
-    @title = nil
-    render :layout => "talk_from_action"
-  end
-
-  def proper_block_detection
-    @todo = "some todo"
-  end
-end
-
-class CaptureTest < ActionController::TestCase
-  tests CaptureController
-
-  def setup
-    super
-    # enable a logger so that (e.g.) the benchmarking stuff runs, so we can get
-    # a more accurate simulation of what happens in "real life".
-    @controller.logger = ActiveSupport::Logger.new(nil)
-
-    @request.host = "www.nextangle.com"
-  end
-
-  def test_simple_capture
-    get :capturing
-    assert_equal "Dreamy days", @response.body.strip
-  end
-
-  def test_content_for
-    get :content_for
-    assert_equal expected_content_for_output, @response.body
-  end
-
-  def test_should_concatentate_content_for
-    get :content_for_concatenated
-    assert_equal expected_content_for_output, @response.body
-  end
-
-  def test_should_set_content_for_with_parameter
-    get :content_for_with_parameter
-    assert_equal expected_content_for_output, @response.body
-  end
-
-  def test_non_erb_block_content_for
-    get :non_erb_block_content_for
-    assert_equal expected_content_for_output, @response.body
-  end
-
-  def test_proper_block_detection
-    get :proper_block_detection
-    assert_equal "some todo", @response.body
-  end
-
-  private
-    def expected_content_for_output
-      "<title>Putting stuff in the title!</title>\nGreat stuff!"
-    end
-end
diff --git a/actionpack/test/controller/filters_test.rb b/actionpack/test/controller/filters_test.rb
index 3b5d7ef446..e58a1aadb8 100644
--- a/actionpack/test/controller/filters_test.rb
+++ b/actionpack/test/controller/filters_test.rb
@@ -17,7 +17,7 @@ class ActionController::Base
   def assigns(key = nil)
     assigns = {}
     instance_variables.each do |ivar|
-      next if ActionController::Base.protected_instance_variables.include?(ivar)
+      next if ActionController::Base.default_protected_instance_vars.include?(ivar)
       assigns[ivar[1..-1]] = instance_variable_get(ivar)
     end
 
diff --git a/actionpack/test/controller/layout_test.rb b/actionpack/test/controller/layout_test.rb
deleted file mode 100644
index 34304cf640..0000000000
--- a/actionpack/test/controller/layout_test.rb
+++ /dev/null
@@ -1,262 +0,0 @@
-require 'abstract_unit'
-require 'rbconfig'
-require 'active_support/core_ext/array/extract_options'
-
-# The view_paths array must be set on Base and not LayoutTest so that LayoutTest's inherited
-# method has access to the view_paths array when looking for a layout to automatically assign.
-old_load_paths = ActionController::Base.view_paths
-
-ActionView::Template::register_template_handler :mab,
-  lambda { |template| template.source.inspect }
-
-ActionController::Base.view_paths = [ File.dirname(__FILE__) + '/../fixtures/layout_tests/' ]
-
-class LayoutTest < ActionController::Base
-  def self.controller_path; 'views' end
-  def self._implied_layout_name; to_s.underscore.gsub(/_controller$/, '') ; end
-  self.view_paths = ActionController::Base.view_paths.dup
-end
-
-# Restore view_paths to previous value
-ActionController::Base.view_paths = old_load_paths
-
-class ProductController < LayoutTest
-end
-
-class ItemController < LayoutTest
-end
-
-class ThirdPartyTemplateLibraryController < LayoutTest
-end
-
-module ControllerNameSpace
-end
-
-class ControllerNameSpace::NestedController < LayoutTest
-end
-
-class MultipleExtensions < LayoutTest
-end
-
-class LayoutAutoDiscoveryTest < ActionController::TestCase
-  def setup
-    super
-    @request.host = "www.nextangle.com"
-  end
-
-  def test_application_layout_is_default_when_no_controller_match
-    @controller = ProductController.new
-    get :hello
-    assert_equal 'layout_test.erb hello.erb', @response.body
-  end
-
-  def test_controller_name_layout_name_match
-    @controller = ItemController.new
-    get :hello
-    assert_equal 'item.erb hello.erb', @response.body
-  end
-
-  def test_third_party_template_library_auto_discovers_layout
-    @controller = ThirdPartyTemplateLibraryController.new
-    get :hello
-    assert_response :success
-    assert_equal 'layouts/third_party_template_library.mab', @response.body
-  end
-
-  def test_namespaced_controllers_auto_detect_layouts1
-    @controller = ControllerNameSpace::NestedController.new
-    get :hello
-    assert_equal 'controller_name_space/nested.erb hello.erb', @response.body
-  end
-
-  def test_namespaced_controllers_auto_detect_layouts2
-    @controller = MultipleExtensions.new
-    get :hello
-    assert_equal 'multiple_extensions.html.erb hello.erb', @response.body.strip
-  end
-end
-
-class DefaultLayoutController < LayoutTest
-end
-
-class StreamingLayoutController < LayoutTest
-  def render(*args)
-    options = args.extract_options!
-    super(*args, options.merge(:stream => true))
-  end
-end
-
-class AbsolutePathLayoutController < LayoutTest
-  layout File.expand_path(File.expand_path(__FILE__) + '/../../fixtures/layout_tests/layouts/layout_test')
-end
-
-class HasOwnLayoutController < LayoutTest
-  layout 'item'
-end
-
-class HasNilLayoutSymbol < LayoutTest
-  layout :nilz
-
-  def nilz
-    nil
-  end
-end
-
-class HasNilLayoutProc < LayoutTest
-  layout proc { nil }
-end
-
-class PrependsViewPathController < LayoutTest
-  def hello
-    prepend_view_path File.dirname(__FILE__) + '/../fixtures/layout_tests/alt/'
-    render :layout => 'alt'
-  end
-end
-
-class OnlyLayoutController < LayoutTest
-  layout 'item', :only => "hello"
-end
-
-class ExceptLayoutController < LayoutTest
-  layout 'item', :except => "goodbye"
-end
-
-class SetsLayoutInRenderController < LayoutTest
-  def hello
-    render :layout => 'third_party_template_library'
-  end
-end
-
-class RendersNoLayoutController < LayoutTest
-  def hello
-    render :layout => false
-  end
-end
-
-class LayoutSetInResponseTest < ActionController::TestCase
-  include ActionView::Template::Handlers
-
-  def test_layout_set_when_using_default_layout
-    @controller = DefaultLayoutController.new
-    get :hello
-    assert_template :layout => "layouts/layout_test"
-  end
-
-  def test_layout_set_when_using_streaming_layout
-    @controller = StreamingLayoutController.new
-    get :hello
-    assert_template :hello
-  end
-
-  def test_layout_set_when_set_in_controller
-    @controller = HasOwnLayoutController.new
-    get :hello
-    assert_template :layout => "layouts/item"
-  end
-
-  def test_layout_symbol_set_in_controller_returning_nil_falls_back_to_default
-    @controller = HasNilLayoutSymbol.new
-    get :hello
-    assert_template layout: "layouts/layout_test"
-  end
-
-  def test_layout_proc_set_in_controller_returning_nil_falls_back_to_default
-    @controller = HasNilLayoutProc.new
-    get :hello
-    assert_template layout: "layouts/layout_test"
-  end
-
-  def test_layout_only_exception_when_included
-    @controller = OnlyLayoutController.new
-    get :hello
-    assert_template :layout => "layouts/item"
-  end
-
-  def test_layout_only_exception_when_excepted
-    @controller = OnlyLayoutController.new
-    get :goodbye
-    assert !@response.body.include?("item.erb"), "#{@response.body.inspect} included 'item.erb'"
-  end
-
-  def test_layout_except_exception_when_included
-    @controller = ExceptLayoutController.new
-    get :hello
-    assert_template :layout => "layouts/item"
-  end
-
-  def test_layout_except_exception_when_excepted
-    @controller = ExceptLayoutController.new
-    get :goodbye
-    assert !@response.body.include?("item.erb"), "#{@response.body.inspect} included 'item.erb'"
-  end
-
-  def test_layout_set_when_using_render
-    @controller = SetsLayoutInRenderController.new
-    get :hello
-    assert_template :layout => "layouts/third_party_template_library"
-  end
-
-  def test_layout_is_not_set_when_none_rendered
-    @controller = RendersNoLayoutController.new
-    get :hello
-    assert_template :layout => nil
-  end
-
-  def test_layout_is_picked_from_the_controller_instances_view_path
-    @controller = PrependsViewPathController.new
-    get :hello
-    assert_template :layout => /layouts\/alt/
-  end
-
-  def test_absolute_pathed_layout
-    @controller = AbsolutePathLayoutController.new
-    get :hello
-    assert_equal "layout_test.erb hello.erb", @response.body.strip
-  end
-end
-
-class RenderWithTemplateOptionController < LayoutTest
-  def hello
-    render :template => 'alt/hello'
-  end
-end
-
-class SetsNonExistentLayoutFile < LayoutTest
-  layout "nofile"
-end
-
-class LayoutExceptionRaisedTest < ActionController::TestCase
-  def test_exception_raised_when_layout_file_not_found
-    @controller = SetsNonExistentLayoutFile.new
-    assert_raise(ActionView::MissingTemplate) { get :hello }
-  end
-end
-
-class LayoutStatusIsRendered < LayoutTest
-  def hello
-    render :status => 401
-  end
-end
-
-class LayoutStatusIsRenderedTest < ActionController::TestCase
-  def test_layout_status_is_rendered
-    @controller = LayoutStatusIsRendered.new
-    get :hello
-    assert_response 401
-  end
-end
-
-unless RbConfig::CONFIG['host_os'] =~ /mswin|mingw/
-  class LayoutSymlinkedTest < LayoutTest
-    layout "symlinked/symlinked_layout"
-  end
-
-  class LayoutSymlinkedIsRenderedTest < ActionController::TestCase
-    def test_symlinked_layout_is_rendered
-      @controller = LayoutSymlinkedTest.new
-      get :hello
-      assert_response 200
-      assert_template :layout => "layouts/symlinked/symlinked_layout"
-    end
-  end
-end
diff --git a/actionpack/test/controller/live_stream_test.rb b/actionpack/test/controller/live_stream_test.rb
index e727b27db0..0a431270b5 100644
--- a/actionpack/test/controller/live_stream_test.rb
+++ b/actionpack/test/controller/live_stream_test.rb
@@ -2,6 +2,94 @@ require 'abstract_unit'
 require 'active_support/concurrency/latch'
 
 module ActionController
+  class SSETest < ActionController::TestCase
+    class SSETestController < ActionController::Base
+      include ActionController::Live
+
+      def basic_sse
+        response.headers['Content-Type'] = 'text/event-stream'
+        sse = SSE.new(response.stream)
+        sse.write("{\"name\":\"John\"}")
+        sse.write({ name: "Ryan" })
+      ensure
+        sse.close
+      end
+
+      def sse_with_event
+        sse = SSE.new(response.stream, event: "send-name")
+        sse.write("{\"name\":\"John\"}")
+        sse.write({ name: "Ryan" })
+      ensure
+        sse.close
+      end
+
+      def sse_with_retry
+        sse = SSE.new(response.stream, retry: 1000)
+        sse.write("{\"name\":\"John\"}")
+        sse.write({ name: "Ryan" }, retry: 1500)
+      ensure
+        sse.close
+      end
+
+      def sse_with_id
+        sse = SSE.new(response.stream)
+        sse.write("{\"name\":\"John\"}", id: 1)
+        sse.write({ name: "Ryan" }, id: 2)
+      ensure
+        sse.close
+      end
+    end
+
+    tests SSETestController
+
+    def wait_for_response_stream_close
+      while !response.stream.closed?
+        sleep 0.01
+      end
+    end
+
+    def test_basic_sse
+      get :basic_sse
+
+      wait_for_response_stream_close
+      assert_match(/data: {\"name\":\"John\"}/, response.body)
+      assert_match(/data: {\"name\":\"Ryan\"}/, response.body)
+    end
+
+    def test_sse_with_event_name
+      get :sse_with_event
+
+      wait_for_response_stream_close
+      assert_match(/data: {\"name\":\"John\"}/, response.body)
+      assert_match(/data: {\"name\":\"Ryan\"}/, response.body)
+      assert_match(/event: send-name/, response.body)
+    end
+
+    def test_sse_with_retry
+      get :sse_with_retry
+
+      wait_for_response_stream_close
+      first_response, second_response = response.body.split("\n\n")
+      assert_match(/data: {\"name\":\"John\"}/, first_response)
+      assert_match(/retry: 1000/, first_response)
+
+      assert_match(/data: {\"name\":\"Ryan\"}/, second_response)
+      assert_match(/retry: 1500/, second_response)
+    end
+
+    def test_sse_with_id
+      get :sse_with_id
+
+      wait_for_response_stream_close
+      first_response, second_response = response.body.split("\n\n")
+      assert_match(/data: {\"name\":\"John\"}/, first_response)
+      assert_match(/id: 1/, first_response)
+
+      assert_match(/data: {\"name\":\"Ryan\"}/, second_response)
+      assert_match(/id: 2/, second_response)
+    end
+  end
+
   class LiveStreamTest < ActionController::TestCase
     class TestController < ActionController::Base
       include ActionController::Live
diff --git a/actionpack/test/controller/mime/accept_format_test.rb b/actionpack/test/controller/mime/accept_format_test.rb
new file mode 100644
index 0000000000..c03c7edeb8
--- /dev/null
+++ b/actionpack/test/controller/mime/accept_format_test.rb
@@ -0,0 +1,94 @@
+require 'abstract_unit'
+
+class StarStarMimeController < ActionController::Base
+  layout nil
+
+  def index
+    render
+  end
+end
+
+class StarStarMimeControllerTest < ActionController::TestCase
+  tests StarStarMimeController
+
+  def test_javascript_with_format
+    @request.accept = "text/javascript"
+    get :index, :format => 'js'
+    assert_match "function addition(a,b){ return a+b; }", @response.body
+  end
+
+  def test_javascript_with_no_format
+    @request.accept = "text/javascript"
+    get :index
+    assert_match "function addition(a,b){ return a+b; }", @response.body
+  end
+
+  def test_javascript_with_no_format_only_star_star
+    @request.accept = "*/*"
+    get :index
+    assert_match "function addition(a,b){ return a+b; }", @response.body
+  end
+end
+
+class AbstractPostController < ActionController::Base
+  self.view_paths = File.dirname(__FILE__) + "/../../fixtures/post_test/"
+end
+
+# For testing layouts which are set automatically
+class PostController < AbstractPostController
+  around_action :with_iphone
+
+  def index
+    respond_to(:html, :iphone, :js)
+  end
+
+protected
+
+  def with_iphone
+    request.format = "iphone" if request.env["HTTP_ACCEPT"] == "text/iphone"
+    yield
+  end
+end
+
+class SuperPostController < PostController
+end
+
+class MimeControllerLayoutsTest < ActionController::TestCase
+  tests PostController
+
+  def setup
+    super
+    @request.host = "www.example.com"
+    Mime::Type.register_alias("text/html", :iphone)
+  end
+
+  def teardown
+    super
+    Mime::Type.unregister(:iphone)
+  end
+
+  def test_missing_layout_renders_properly
+    get :index
+    assert_equal '<html><div id="html">Hello Firefox</div></html>', @response.body
+
+    @request.accept = "text/iphone"
+    get :index
+    assert_equal 'Hello iPhone', @response.body
+  end
+
+  def test_format_with_inherited_layouts
+    @controller = SuperPostController.new
+
+    get :index
+    assert_equal '<html><div id="html">Super Firefox</div></html>', @response.body
+
+    @request.accept = "text/iphone"
+    get :index
+    assert_equal '<html><div id="super_iphone">Super iPhone</div></html>', @response.body
+  end
+
+  def test_non_navigational_format_with_no_template_fallbacks_to_html_template_with_no_layout
+    get :index, :format => :js
+    assert_equal "Hello Firefox", @response.body
+  end
+end
diff --git a/actionpack/test/controller/mime/respond_to_test.rb b/actionpack/test/controller/mime/respond_to_test.rb
new file mode 100644
index 0000000000..774dabe105
--- /dev/null
+++ b/actionpack/test/controller/mime/respond_to_test.rb
@@ -0,0 +1,493 @@
+require 'abstract_unit'
+
+class RespondToController < ActionController::Base
+  layout :set_layout
+
+  def html_xml_or_rss
+    respond_to do |type|
+      type.html { render :text => "HTML"    }
+      type.xml  { render :text => "XML"     }
+      type.rss  { render :text => "RSS"     }
+      type.all  { render :text => "Nothing" }
+    end
+  end
+
+  def js_or_html
+    respond_to do |type|
+      type.html { render :text => "HTML"    }
+      type.js   { render :text => "JS"      }
+      type.all  { render :text => "Nothing" }
+    end
+  end
+
+  def json_or_yaml
+    respond_to do |type|
+      type.json { render :text => "JSON" }
+      type.yaml { render :text => "YAML" }
+    end
+  end
+
+  def html_or_xml
+    respond_to do |type|
+      type.html { render :text => "HTML"    }
+      type.xml  { render :text => "XML"     }
+      type.all  { render :text => "Nothing" }
+    end
+  end
+
+  def json_xml_or_html
+    respond_to do |type|
+      type.json { render :text => 'JSON' }
+      type.xml { render :xml => 'XML' }
+      type.html { render :text => 'HTML' }
+    end
+  end
+
+
+  def forced_xml
+    request.format = :xml
+
+    respond_to do |type|
+      type.html { render :text => "HTML"    }
+      type.xml  { render :text => "XML"     }
+    end
+  end
+
+  def just_xml
+    respond_to do |type|
+      type.xml  { render :text => "XML" }
+    end
+  end
+
+  def using_defaults
+    respond_to do |type|
+      type.html
+      type.xml
+    end
+  end
+
+  def using_defaults_with_type_list
+    respond_to(:html, :xml)
+  end
+
+  def using_defaults_with_all
+    respond_to do |type|
+      type.html
+      type.all{ render text: "ALL" }
+    end
+  end
+
+  def made_for_content_type
+    respond_to do |type|
+      type.rss  { render :text => "RSS"  }
+      type.atom { render :text => "ATOM" }
+      type.all  { render :text => "Nothing" }
+    end
+  end
+
+  def custom_type_handling
+    respond_to do |type|
+      type.html { render :text => "HTML"    }
+      type.custom("application/crazy-xml")  { render :text => "Crazy XML"  }
+      type.all  { render :text => "Nothing" }
+    end
+  end
+
+
+  def custom_constant_handling
+    respond_to do |type|
+      type.html   { render :text => "HTML"   }
+      type.mobile { render :text => "Mobile" }
+    end
+  end
+
+  def custom_constant_handling_without_block
+    respond_to do |type|
+      type.html   { render :text => "HTML"   }
+      type.mobile
+    end
+  end
+
+  def handle_any
+    respond_to do |type|
+      type.html { render :text => "HTML" }
+      type.any(:js, :xml) { render :text => "Either JS or XML" }
+    end
+  end
+
+  def handle_any_any
+    respond_to do |type|
+      type.html { render :text => 'HTML' }
+      type.any { render :text => 'Whatever you ask for, I got it' }
+    end
+  end
+
+  def all_types_with_layout
+    respond_to do |type|
+      type.html
+    end
+  end
+
+  def iphone_with_html_response_type
+    request.format = :iphone if request.env["HTTP_ACCEPT"] == "text/iphone"
+
+    respond_to do |type|
+      type.html   { @type = "Firefox" }
+      type.iphone { @type = "iPhone"  }
+    end
+  end
+
+  def iphone_with_html_response_type_without_layout
+    request.format = "iphone" if request.env["HTTP_ACCEPT"] == "text/iphone"
+
+    respond_to do |type|
+      type.html   { @type = "Firefox"; render :action => "iphone_with_html_response_type" }
+      type.iphone { @type = "iPhone" ; render :action => "iphone_with_html_response_type" }
+    end
+  end
+
+  protected
+    def set_layout
+      case action_name
+        when "all_types_with_layout", "iphone_with_html_response_type"
+          "respond_to/layouts/standard"
+        when "iphone_with_html_response_type_without_layout"
+          "respond_to/layouts/missing"
+      end
+    end
+end
+
+class RespondToControllerTest < ActionController::TestCase
+  tests RespondToController
+
+  def setup
+    super
+    @request.host = "www.example.com"
+    Mime::Type.register_alias("text/html", :iphone)
+    Mime::Type.register("text/x-mobile", :mobile)
+  end
+
+  def teardown
+    super
+    Mime::Type.unregister(:iphone)
+    Mime::Type.unregister(:mobile)
+  end
+
+  def test_html
+    @request.accept = "text/html"
+    get :js_or_html
+    assert_equal 'HTML', @response.body
+
+    get :html_or_xml
+    assert_equal 'HTML', @response.body
+
+    assert_raises(ActionController::UnknownFormat) do
+      get :just_xml
+    end
+  end
+
+  def test_all
+    @request.accept = "*/*"
+    get :js_or_html
+    assert_equal 'HTML', @response.body # js is not part of all
+
+    get :html_or_xml
+    assert_equal 'HTML', @response.body
+
+    get :just_xml
+    assert_equal 'XML', @response.body
+  end
+
+  def test_xml
+    @request.accept = "application/xml"
+    get :html_xml_or_rss
+    assert_equal 'XML', @response.body
+  end
+
+  def test_js_or_html
+    @request.accept = "text/javascript, text/html"
+    xhr :get, :js_or_html
+    assert_equal 'JS', @response.body
+
+    @request.accept = "text/javascript, text/html"
+    xhr :get, :html_or_xml
+    assert_equal 'HTML', @response.body
+
+    @request.accept = "text/javascript, text/html"
+
+    assert_raises(ActionController::UnknownFormat) do
+      xhr :get, :just_xml
+    end
+  end
+
+  def test_json_or_yaml_with_leading_star_star
+    @request.accept = "*/*, application/json"
+    get :json_xml_or_html
+    assert_equal 'HTML', @response.body
+
+    @request.accept = "*/* , application/json"
+    get :json_xml_or_html
+    assert_equal 'HTML', @response.body
+  end
+
+  def test_json_or_yaml
+    xhr :get, :json_or_yaml
+    assert_equal 'JSON', @response.body
+
+    get :json_or_yaml, :format => 'json'
+    assert_equal 'JSON', @response.body
+
+    get :json_or_yaml, :format => 'yaml'
+    assert_equal 'YAML', @response.body
+
+    { 'YAML' => %w(text/yaml),
+      'JSON' => %w(application/json text/x-json)
+    }.each do |body, content_types|
+      content_types.each do |content_type|
+        @request.accept = content_type
+        get :json_or_yaml
+        assert_equal body, @response.body
+      end
+    end
+  end
+
+  def test_js_or_anything
+    @request.accept = "text/javascript, */*"
+    xhr :get, :js_or_html
+    assert_equal 'JS', @response.body
+
+    xhr :get, :html_or_xml
+    assert_equal 'HTML', @response.body
+
+    xhr :get, :just_xml
+    assert_equal 'XML', @response.body
+  end
+
+  def test_using_defaults
+    @request.accept = "*/*"
+    get :using_defaults
+    assert_equal "text/html", @response.content_type
+    assert_equal 'Hello world!', @response.body
+
+    @request.accept = "application/xml"
+    get :using_defaults
+    assert_equal "application/xml", @response.content_type
+    assert_equal "<p>Hello world!</p>\n", @response.body
+  end
+
+  def test_using_defaults_with_all
+    @request.accept = "*/*"
+    get :using_defaults_with_all
+    assert_equal "HTML!", @response.body.strip
+
+    @request.accept = "text/html"
+    get :using_defaults_with_all
+    assert_equal "HTML!", @response.body.strip
+
+    @request.accept = "application/json"
+    get :using_defaults_with_all
+    assert_equal "ALL", @response.body
+  end
+
+  def test_using_defaults_with_type_list
+    @request.accept = "*/*"
+    get :using_defaults_with_type_list
+    assert_equal "text/html", @response.content_type
+    assert_equal 'Hello world!', @response.body
+
+    @request.accept = "application/xml"
+    get :using_defaults_with_type_list
+    assert_equal "application/xml", @response.content_type
+    assert_equal "<p>Hello world!</p>\n", @response.body
+  end
+
+  def test_with_atom_content_type
+    @request.accept = ""
+    @request.env["CONTENT_TYPE"] = "application/atom+xml"
+    xhr :get, :made_for_content_type
+    assert_equal "ATOM", @response.body
+  end
+
+  def test_with_rss_content_type
+    @request.accept = ""
+    @request.env["CONTENT_TYPE"] = "application/rss+xml"
+    xhr :get, :made_for_content_type
+    assert_equal "RSS", @response.body
+  end
+
+  def test_synonyms
+    @request.accept = "application/javascript"
+    get :js_or_html
+    assert_equal 'JS', @response.body
+
+    @request.accept = "application/x-xml"
+    get :html_xml_or_rss
+    assert_equal "XML", @response.body
+  end
+
+  def test_custom_types
+    @request.accept = "application/crazy-xml"
+    get :custom_type_handling
+    assert_equal "application/crazy-xml", @response.content_type
+    assert_equal 'Crazy XML', @response.body
+
+    @request.accept = "text/html"
+    get :custom_type_handling
+    assert_equal "text/html", @response.content_type
+    assert_equal 'HTML', @response.body
+  end
+
+  def test_xhtml_alias
+    @request.accept = "application/xhtml+xml,application/xml"
+    get :html_or_xml
+    assert_equal 'HTML', @response.body
+  end
+
+  def test_firefox_simulation
+    @request.accept = "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"
+    get :html_or_xml
+    assert_equal 'HTML', @response.body
+  end
+
+  def test_handle_any
+    @request.accept = "*/*"
+    get :handle_any
+    assert_equal 'HTML', @response.body
+
+    @request.accept = "text/javascript"
+    get :handle_any
+    assert_equal 'Either JS or XML', @response.body
+
+    @request.accept = "text/xml"
+    get :handle_any
+    assert_equal 'Either JS or XML', @response.body
+  end
+
+  def test_handle_any_any
+    @request.accept = "*/*"
+    get :handle_any_any
+    assert_equal 'HTML', @response.body
+  end
+
+  def test_handle_any_any_parameter_format
+    get :handle_any_any, {:format=>'html'}
+    assert_equal 'HTML', @response.body
+  end
+
+  def test_handle_any_any_explicit_html
+    @request.accept = "text/html"
+    get :handle_any_any
+    assert_equal 'HTML', @response.body
+  end
+
+  def test_handle_any_any_javascript
+    @request.accept = "text/javascript"
+    get :handle_any_any
+    assert_equal 'Whatever you ask for, I got it', @response.body
+  end
+
+  def test_handle_any_any_xml
+    @request.accept = "text/xml"
+    get :handle_any_any
+    assert_equal 'Whatever you ask for, I got it', @response.body
+  end
+
+  def test_browser_check_with_any_any
+    @request.accept = "application/json, application/xml"
+    get :json_xml_or_html
+    assert_equal 'JSON', @response.body
+
+    @request.accept = "application/json, application/xml, */*"
+    get :json_xml_or_html
+    assert_equal 'HTML', @response.body
+  end
+
+  def test_html_type_with_layout
+    @request.accept = "text/html"
+    get :all_types_with_layout
+    assert_equal '<html><div id="html">HTML for all_types_with_layout</div></html>', @response.body
+  end
+
+  def test_xhr
+    xhr :get, :js_or_html
+    assert_equal 'JS', @response.body
+  end
+
+  def test_custom_constant
+    get :custom_constant_handling, :format => "mobile"
+    assert_equal "text/x-mobile", @response.content_type
+    assert_equal "Mobile", @response.body
+  end
+
+  def test_custom_constant_handling_without_block
+    get :custom_constant_handling_without_block, :format => "mobile"
+    assert_equal "text/x-mobile", @response.content_type
+    assert_equal "Mobile", @response.body
+  end
+
+  def test_forced_format
+    get :html_xml_or_rss
+    assert_equal "HTML", @response.body
+
+    get :html_xml_or_rss, :format => "html"
+    assert_equal "HTML", @response.body
+
+    get :html_xml_or_rss, :format => "xml"
+    assert_equal "XML", @response.body
+
+    get :html_xml_or_rss, :format => "rss"
+    assert_equal "RSS", @response.body
+  end
+
+  def test_internally_forced_format
+    get :forced_xml
+    assert_equal "XML", @response.body
+
+    get :forced_xml, :format => "html"
+    assert_equal "XML", @response.body
+  end
+
+  def test_extension_synonyms
+    get :html_xml_or_rss, :format => "xhtml"
+    assert_equal "HTML", @response.body
+  end
+
+  def test_render_action_for_html
+    @controller.instance_eval do
+      def render(*args)
+        @action = args.first[:action] unless args.empty?
+        @action ||= action_name
+
+        response.body = "#{@action} - #{formats}"
+      end
+    end
+
+    get :using_defaults
+    assert_equal "using_defaults - #{[:html].to_s}", @response.body
+
+    get :using_defaults, :format => "xml"
+    assert_equal "using_defaults - #{[:xml].to_s}", @response.body
+  end
+
+  def test_format_with_custom_response_type
+    get :iphone_with_html_response_type
+    assert_equal '<html><div id="html">Hello future from Firefox!</div></html>', @response.body
+
+    get :iphone_with_html_response_type, :format => "iphone"
+    assert_equal "text/html", @response.content_type
+    assert_equal '<html><div id="iphone">Hello iPhone future from iPhone!</div></html>', @response.body
+  end
+
+  def test_format_with_custom_response_type_and_request_headers
+    @request.accept = "text/iphone"
+    get :iphone_with_html_response_type
+    assert_equal '<html><div id="iphone">Hello iPhone future from iPhone!</div></html>', @response.body
+    assert_equal "text/html", @response.content_type
+  end
+
+  def test_invalid_format
+    assert_raises(ActionController::UnknownFormat) do
+      get :using_defaults, :format => "invalidformat"
+    end
+  end
+end
diff --git a/actionpack/test/controller/mime_responds_test.rb b/actionpack/test/controller/mime/respond_with_test.rb
index a9c62899b5..76af9e3414 100644
--- a/actionpack/test/controller/mime_responds_test.rb
+++ b/actionpack/test/controller/mime/respond_with_test.rb
@@ -1,529 +1,5 @@
 require 'abstract_unit'
 require 'controller/fake_models'
-require 'active_support/core_ext/hash/conversions'
-
-class StarStarMimeController < ActionController::Base
-  layout nil
-
-  def index
-    render
-  end
-end
-
-class RespondToController < ActionController::Base
-  layout :set_layout
-
-  def html_xml_or_rss
-    respond_to do |type|
-      type.html { render :text => "HTML"    }
-      type.xml  { render :text => "XML"     }
-      type.rss  { render :text => "RSS"     }
-      type.all  { render :text => "Nothing" }
-    end
-  end
-
-  def js_or_html
-    respond_to do |type|
-      type.html { render :text => "HTML"    }
-      type.js   { render :text => "JS"      }
-      type.all  { render :text => "Nothing" }
-    end
-  end
-
-  def json_or_yaml
-    respond_to do |type|
-      type.json { render :text => "JSON" }
-      type.yaml { render :text => "YAML" }
-    end
-  end
-
-  def html_or_xml
-    respond_to do |type|
-      type.html { render :text => "HTML"    }
-      type.xml  { render :text => "XML"     }
-      type.all  { render :text => "Nothing" }
-    end
-  end
-
-  def json_xml_or_html
-    respond_to do |type|
-      type.json { render :text => 'JSON' }
-      type.xml { render :xml => 'XML' }
-      type.html { render :text => 'HTML' }
-    end
-  end
-
-
-  def forced_xml
-    request.format = :xml
-
-    respond_to do |type|
-      type.html { render :text => "HTML"    }
-      type.xml  { render :text => "XML"     }
-    end
-  end
-
-  def just_xml
-    respond_to do |type|
-      type.xml  { render :text => "XML" }
-    end
-  end
-
-  def using_defaults
-    respond_to do |type|
-      type.html
-      type.xml
-    end
-  end
-
-  def using_defaults_with_type_list
-    respond_to(:html, :xml)
-  end
-
-  def using_defaults_with_all
-    respond_to do |type|
-      type.html
-      type.all{ render text: "ALL" }
-    end
-  end
-
-  def made_for_content_type
-    respond_to do |type|
-      type.rss  { render :text => "RSS"  }
-      type.atom { render :text => "ATOM" }
-      type.all  { render :text => "Nothing" }
-    end
-  end
-
-  def custom_type_handling
-    respond_to do |type|
-      type.html { render :text => "HTML"    }
-      type.custom("application/crazy-xml")  { render :text => "Crazy XML"  }
-      type.all  { render :text => "Nothing" }
-    end
-  end
-
-
-  def custom_constant_handling
-    respond_to do |type|
-      type.html   { render :text => "HTML"   }
-      type.mobile { render :text => "Mobile" }
-    end
-  end
-
-  def custom_constant_handling_without_block
-    respond_to do |type|
-      type.html   { render :text => "HTML"   }
-      type.mobile
-    end
-  end
-
-  def handle_any
-    respond_to do |type|
-      type.html { render :text => "HTML" }
-      type.any(:js, :xml) { render :text => "Either JS or XML" }
-    end
-  end
-
-  def handle_any_any
-    respond_to do |type|
-      type.html { render :text => 'HTML' }
-      type.any { render :text => 'Whatever you ask for, I got it' }
-    end
-  end
-
-  def all_types_with_layout
-    respond_to do |type|
-      type.html
-    end
-  end
-
-  def iphone_with_html_response_type
-    request.format = :iphone if request.env["HTTP_ACCEPT"] == "text/iphone"
-
-    respond_to do |type|
-      type.html   { @type = "Firefox" }
-      type.iphone { @type = "iPhone"  }
-    end
-  end
-
-  def iphone_with_html_response_type_without_layout
-    request.format = "iphone" if request.env["HTTP_ACCEPT"] == "text/iphone"
-
-    respond_to do |type|
-      type.html   { @type = "Firefox"; render :action => "iphone_with_html_response_type" }
-      type.iphone { @type = "iPhone" ; render :action => "iphone_with_html_response_type" }
-    end
-  end
-
-  protected
-    def set_layout
-      case action_name
-        when "all_types_with_layout", "iphone_with_html_response_type"
-          "respond_to/layouts/standard"
-        when "iphone_with_html_response_type_without_layout"
-          "respond_to/layouts/missing"
-      end
-    end
-end
-
-class StarStarMimeControllerTest < ActionController::TestCase
-  tests StarStarMimeController
-
-  def test_javascript_with_format
-    @request.accept = "text/javascript"
-    get :index, :format => 'js'
-    assert_match "function addition(a,b){ return a+b; }", @response.body
-  end
-
-  def test_javascript_with_no_format
-    @request.accept = "text/javascript"
-    get :index
-    assert_match "function addition(a,b){ return a+b; }", @response.body
-  end
-
-  def test_javascript_with_no_format_only_star_star
-    @request.accept = "*/*"
-    get :index
-    assert_match "function addition(a,b){ return a+b; }", @response.body
-  end
-
-end
-
-class RespondToControllerTest < ActionController::TestCase
-  tests RespondToController
-
-  def setup
-    super
-    @request.host = "www.example.com"
-    Mime::Type.register_alias("text/html", :iphone)
-    Mime::Type.register("text/x-mobile", :mobile)
-  end
-
-  def teardown
-    super
-    Mime::Type.unregister(:iphone)
-    Mime::Type.unregister(:mobile)
-  end
-
-  def test_html
-    @request.accept = "text/html"
-    get :js_or_html
-    assert_equal 'HTML', @response.body
-
-    get :html_or_xml
-    assert_equal 'HTML', @response.body
-
-    assert_raises(ActionController::UnknownFormat) do
-      get :just_xml
-    end
-  end
-
-  def test_all
-    @request.accept = "*/*"
-    get :js_or_html
-    assert_equal 'HTML', @response.body # js is not part of all
-
-    get :html_or_xml
-    assert_equal 'HTML', @response.body
-
-    get :just_xml
-    assert_equal 'XML', @response.body
-  end
-
-  def test_xml
-    @request.accept = "application/xml"
-    get :html_xml_or_rss
-    assert_equal 'XML', @response.body
-  end
-
-  def test_js_or_html
-    @request.accept = "text/javascript, text/html"
-    xhr :get, :js_or_html
-    assert_equal 'JS', @response.body
-
-    @request.accept = "text/javascript, text/html"
-    xhr :get, :html_or_xml
-    assert_equal 'HTML', @response.body
-
-    @request.accept = "text/javascript, text/html"
-
-    assert_raises(ActionController::UnknownFormat) do
-      xhr :get, :just_xml
-    end
-  end
-
-  def test_json_or_yaml_with_leading_star_star
-    @request.accept = "*/*, application/json"
-    get :json_xml_or_html
-    assert_equal 'HTML', @response.body
-
-    @request.accept = "*/* , application/json"
-    get :json_xml_or_html
-    assert_equal 'HTML', @response.body
-  end
-
-  def test_json_or_yaml
-    xhr :get, :json_or_yaml
-    assert_equal 'JSON', @response.body
-
-    get :json_or_yaml, :format => 'json'
-    assert_equal 'JSON', @response.body
-
-    get :json_or_yaml, :format => 'yaml'
-    assert_equal 'YAML', @response.body
-
-    { 'YAML' => %w(text/yaml),
-      'JSON' => %w(application/json text/x-json)
-    }.each do |body, content_types|
-      content_types.each do |content_type|
-        @request.accept = content_type
-        get :json_or_yaml
-        assert_equal body, @response.body
-      end
-    end
-  end
-
-  def test_js_or_anything
-    @request.accept = "text/javascript, */*"
-    xhr :get, :js_or_html
-    assert_equal 'JS', @response.body
-
-    xhr :get, :html_or_xml
-    assert_equal 'HTML', @response.body
-
-    xhr :get, :just_xml
-    assert_equal 'XML', @response.body
-  end
-
-  def test_using_defaults
-    @request.accept = "*/*"
-    get :using_defaults
-    assert_equal "text/html", @response.content_type
-    assert_equal 'Hello world!', @response.body
-
-    @request.accept = "application/xml"
-    get :using_defaults
-    assert_equal "application/xml", @response.content_type
-    assert_equal "<p>Hello world!</p>\n", @response.body
-  end
-
-  def test_using_defaults_with_all
-    @request.accept = "*/*"
-    get :using_defaults_with_all
-    assert_equal "HTML!", @response.body.strip
-
-    @request.accept = "text/html"
-    get :using_defaults_with_all
-    assert_equal "HTML!", @response.body.strip
-
-    @request.accept = "application/json"
-    get :using_defaults_with_all
-    assert_equal "ALL", @response.body
-  end
-
-  def test_using_defaults_with_type_list
-    @request.accept = "*/*"
-    get :using_defaults_with_type_list
-    assert_equal "text/html", @response.content_type
-    assert_equal 'Hello world!', @response.body
-
-    @request.accept = "application/xml"
-    get :using_defaults_with_type_list
-    assert_equal "application/xml", @response.content_type
-    assert_equal "<p>Hello world!</p>\n", @response.body
-  end
-
-  def test_with_atom_content_type
-    @request.accept = ""
-    @request.env["CONTENT_TYPE"] = "application/atom+xml"
-    xhr :get, :made_for_content_type
-    assert_equal "ATOM", @response.body
-  end
-
-  def test_with_rss_content_type
-    @request.accept = ""
-    @request.env["CONTENT_TYPE"] = "application/rss+xml"
-    xhr :get, :made_for_content_type
-    assert_equal "RSS", @response.body
-  end
-
-  def test_synonyms
-    @request.accept = "application/javascript"
-    get :js_or_html
-    assert_equal 'JS', @response.body
-
-    @request.accept = "application/x-xml"
-    get :html_xml_or_rss
-    assert_equal "XML", @response.body
-  end
-
-  def test_custom_types
-    @request.accept = "application/crazy-xml"
-    get :custom_type_handling
-    assert_equal "application/crazy-xml", @response.content_type
-    assert_equal 'Crazy XML', @response.body
-
-    @request.accept = "text/html"
-    get :custom_type_handling
-    assert_equal "text/html", @response.content_type
-    assert_equal 'HTML', @response.body
-  end
-
-  def test_xhtml_alias
-    @request.accept = "application/xhtml+xml,application/xml"
-    get :html_or_xml
-    assert_equal 'HTML', @response.body
-  end
-
-  def test_firefox_simulation
-    @request.accept = "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"
-    get :html_or_xml
-    assert_equal 'HTML', @response.body
-  end
-
-  def test_handle_any
-    @request.accept = "*/*"
-    get :handle_any
-    assert_equal 'HTML', @response.body
-
-    @request.accept = "text/javascript"
-    get :handle_any
-    assert_equal 'Either JS or XML', @response.body
-
-    @request.accept = "text/xml"
-    get :handle_any
-    assert_equal 'Either JS or XML', @response.body
-  end
-
-  def test_handle_any_any
-    @request.accept = "*/*"
-    get :handle_any_any
-    assert_equal 'HTML', @response.body
-  end
-
-  def test_handle_any_any_parameter_format
-    get :handle_any_any, {:format=>'html'}
-    assert_equal 'HTML', @response.body
-  end
-
-  def test_handle_any_any_explicit_html
-    @request.accept = "text/html"
-    get :handle_any_any
-    assert_equal 'HTML', @response.body
-  end
-
-  def test_handle_any_any_javascript
-    @request.accept = "text/javascript"
-    get :handle_any_any
-    assert_equal 'Whatever you ask for, I got it', @response.body
-  end
-
-  def test_handle_any_any_xml
-    @request.accept = "text/xml"
-    get :handle_any_any
-    assert_equal 'Whatever you ask for, I got it', @response.body
-  end
-
-  def test_browser_check_with_any_any
-    @request.accept = "application/json, application/xml"
-    get :json_xml_or_html
-    assert_equal 'JSON', @response.body
-
-    @request.accept = "application/json, application/xml, */*"
-    get :json_xml_or_html
-    assert_equal 'HTML', @response.body
-  end
-
-  def test_html_type_with_layout
-    @request.accept = "text/html"
-    get :all_types_with_layout
-    assert_equal '<html><div id="html">HTML for all_types_with_layout</div></html>', @response.body
-  end
-
-  def test_xhr
-    xhr :get, :js_or_html
-    assert_equal 'JS', @response.body
-  end
-
-  def test_custom_constant
-    get :custom_constant_handling, :format => "mobile"
-    assert_equal "text/x-mobile", @response.content_type
-    assert_equal "Mobile", @response.body
-  end
-
-  def test_custom_constant_handling_without_block
-    get :custom_constant_handling_without_block, :format => "mobile"
-    assert_equal "text/x-mobile", @response.content_type
-    assert_equal "Mobile", @response.body
-  end
-
-  def test_forced_format
-    get :html_xml_or_rss
-    assert_equal "HTML", @response.body
-
-    get :html_xml_or_rss, :format => "html"
-    assert_equal "HTML", @response.body
-
-    get :html_xml_or_rss, :format => "xml"
-    assert_equal "XML", @response.body
-
-    get :html_xml_or_rss, :format => "rss"
-    assert_equal "RSS", @response.body
-  end
-
-  def test_internally_forced_format
-    get :forced_xml
-    assert_equal "XML", @response.body
-
-    get :forced_xml, :format => "html"
-    assert_equal "XML", @response.body
-  end
-
-  def test_extension_synonyms
-    get :html_xml_or_rss, :format => "xhtml"
-    assert_equal "HTML", @response.body
-  end
-
-  def test_render_action_for_html
-    @controller.instance_eval do
-      def render(*args)
-        @action = args.first[:action] unless args.empty?
-        @action ||= action_name
-
-        response.body = "#{@action} - #{formats}"
-      end
-    end
-
-    get :using_defaults
-    assert_equal "using_defaults - #{[:html].to_s}", @response.body
-
-    get :using_defaults, :format => "xml"
-    assert_equal "using_defaults - #{[:xml].to_s}", @response.body
-  end
-
-  def test_format_with_custom_response_type
-    get :iphone_with_html_response_type
-    assert_equal '<html><div id="html">Hello future from Firefox!</div></html>', @response.body
-
-    get :iphone_with_html_response_type, :format => "iphone"
-    assert_equal "text/html", @response.content_type
-    assert_equal '<html><div id="iphone">Hello iPhone future from iPhone!</div></html>', @response.body
-  end
-
-  def test_format_with_custom_response_type_and_request_headers
-    @request.accept = "text/iphone"
-    get :iphone_with_html_response_type
-    assert_equal '<html><div id="iphone">Hello iPhone future from iPhone!</div></html>', @response.body
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_invalid_format
-    assert_raises(ActionController::UnknownFormat) do
-      get :using_defaults, :format => "invalidformat"
-    end
-  end
-end
 
 class RespondWithController < ActionController::Base
   respond_to :html, :json, :touch
@@ -631,6 +107,20 @@ class RenderJsonRespondWithController < RespondWithController
   end
 end
 
+class CsvRespondWithController < ActionController::Base
+  respond_to :csv
+
+  class RespondWithCsv
+    def to_csv
+      "c,s,v"
+    end
+  end
+
+  def index
+    respond_with(RespondWithCsv.new)
+  end
+end
+
 class EmptyRespondWithController < ActionController::Base
   def index
     respond_with(Customer.new("david", 13))
@@ -847,6 +337,7 @@ class RespondWithControllerTest < ActionController::TestCase
       errors = { :name => :invalid }
       Customer.any_instance.stubs(:errors).returns(errors)
       put :using_resource
+
       assert_equal "text/html", @response.content_type
       assert_equal 200, @response.status
       assert_equal "Edit world!\n", @response.body
@@ -1131,6 +622,23 @@ class RespondWithControllerTest < ActionController::TestCase
     RespondWithController.responder = ActionController::Responder
   end
 
+  def test_uses_renderer_if_an_api_behavior
+    ActionController::Renderers.add :csv do |obj, options|
+      send_data obj.to_csv, type: Mime::CSV
+    end
+    @controller = CsvRespondWithController.new
+    get :index, format: 'csv'
+    assert_equal Mime::CSV, @response.content_type
+    assert_equal "c,s,v", @response.body
+  end
+
+  def test_raises_missing_renderer_if_an_api_behavior_with_no_renderer
+    @controller = CsvRespondWithController.new
+    assert_raise ActionController::MissingRenderer do
+      get :index, format: 'csv'
+    end
+  end
+
   def test_error_is_raised_if_no_respond_to_is_declared_and_respond_with_is_called
     @controller = EmptyRespondWithController.new
     @request.accept = "*/*"
@@ -1154,69 +662,6 @@ class RespondWithControllerTest < ActionController::TestCase
     end
 end
 
-class AbstractPostController < ActionController::Base
-  self.view_paths = File.dirname(__FILE__) + "/../fixtures/post_test/"
-end
-
-# For testing layouts which are set automatically
-class PostController < AbstractPostController
-  around_action :with_iphone
-
-  def index
-    respond_to(:html, :iphone, :js)
-  end
-
-protected
-
-  def with_iphone
-    request.format = "iphone" if request.env["HTTP_ACCEPT"] == "text/iphone"
-    yield
-  end
-end
-
-class SuperPostController < PostController
-end
-
-class MimeControllerLayoutsTest < ActionController::TestCase
-  tests PostController
-
-  def setup
-    super
-    @request.host = "www.example.com"
-    Mime::Type.register_alias("text/html", :iphone)
-  end
-
-  def teardown
-    super
-    Mime::Type.unregister(:iphone)
-  end
-
-  def test_missing_layout_renders_properly
-    get :index
-    assert_equal '<html><div id="html">Hello Firefox</div></html>', @response.body
-
-    @request.accept = "text/iphone"
-    get :index
-    assert_equal 'Hello iPhone', @response.body
-  end
-
-  def test_format_with_inherited_layouts
-    @controller = SuperPostController.new
-
-    get :index
-    assert_equal '<html><div id="html">Super Firefox</div></html>', @response.body
-
-    @request.accept = "text/iphone"
-    get :index
-    assert_equal '<html><div id="super_iphone">Super iPhone</div></html>', @response.body
-  end
-
-  def test_non_navigational_format_with_no_template_fallbacks_to_html_template_with_no_layout
-    get :index, :format => :js
-    assert_equal "Hello Firefox", @response.body
-  end
-end
-
 class FlashResponder < ActionController::Responder
   def initialize(controller, resources, options={})
     super
diff --git a/actionpack/test/controller/render_test.rb b/actionpack/test/controller/render_test.rb
index fd835795c0..f41287381a 100644
--- a/actionpack/test/controller/render_test.rb
+++ b/actionpack/test/controller/render_test.rb
@@ -2,26 +2,6 @@ require 'abstract_unit'
 require 'controller/fake_models'
 require 'pathname'
 
-module Fun
-  class GamesController < ActionController::Base
-    # :ported:
-    def hello_world
-    end
-
-    def nested_partial_with_form_builder
-      render :partial => ActionView::Helpers::FormBuilder.new(:post, nil, view_context, {})
-    end
-  end
-end
-
-module Quiz
-  class QuestionsController < ActionController::Base
-    def new
-      render :partial => Quiz::Question.new("Namespaced Partial")
-    end
-  end
-end
-
 class TestControllerWithExtraEtags < ActionController::Base
   etag { nil  }
   etag { 'ab' }
@@ -58,10 +38,6 @@ class TestController < ActionController::Base
   def hello_world
   end
 
-  def hello_world_file
-    render :file => File.expand_path("../../fixtures/hello", __FILE__), :formats => [:html]
-  end
-
   def conditional_hello
     if stale?(:last_modified => Time.now.utc.beginning_of_day, :etag => [:foo, 123])
       render :action => 'hello_world'
@@ -147,327 +123,10 @@ class TestController < ActionController::Base
     fresh_when(:last_modified => Time.now.utc.beginning_of_day, :etag => [ :foo, 123 ])
   end
 
-  # :ported:
-  def render_hello_world
-    render :template => "test/hello_world"
-  end
-
-  def render_hello_world_with_last_modified_set
-    response.last_modified = Date.new(2008, 10, 10).to_time
-    render :template => "test/hello_world"
-  end
-
-  # :ported: compatibility
-  def render_hello_world_with_forward_slash
-    render :template => "/test/hello_world"
-  end
-
-  # :ported:
-  def render_template_in_top_directory
-    render :template => 'shared'
-  end
-
-  # :deprecated:
-  def render_template_in_top_directory_with_slash
-    render :template => '/shared'
-  end
-
-  # :ported:
-  def render_hello_world_from_variable
-    @person = "david"
-    render :text => "hello #{@person}"
-  end
-
-  # :ported:
-  def render_action_hello_world
-    render :action => "hello_world"
-  end
-
-  def render_action_upcased_hello_world
-    render :action => "Hello_world"
-  end
-
-  def render_action_hello_world_as_string
-    render "hello_world"
-  end
-
-  def render_action_hello_world_with_symbol
-    render :action => :hello_world
-  end
-
-  # :ported:
-  def render_text_hello_world
-    render :text => "hello world"
-  end
-
-  # :ported:
-  def render_text_hello_world_with_layout
-    @variable_for_layout = ", I am here!"
-    render :text => "hello world", :layout => true
-  end
-
-  def hello_world_with_layout_false
-    render :layout => false
-  end
-
-  # :ported:
-  def render_file_with_instance_variables
-    @secret = 'in the sauce'
-    path = File.join(File.dirname(__FILE__), '../fixtures/test/render_file_with_ivar')
-    render :file => path
-  end
-
-  # :ported:
-  def render_file_as_string_with_instance_variables
-    @secret = 'in the sauce'
-    path = File.expand_path(File.join(File.dirname(__FILE__), '../fixtures/test/render_file_with_ivar'))
-    render path
-  end
-
-  # :ported:
-  def render_file_not_using_full_path
-    @secret = 'in the sauce'
-    render :file => 'test/render_file_with_ivar'
-  end
-
-  def render_file_not_using_full_path_with_dot_in_path
-    @secret = 'in the sauce'
-    render :file => 'test/dot.directory/render_file_with_ivar'
-  end
-
-  def render_file_using_pathname
-    @secret = 'in the sauce'
-    render :file => Pathname.new(File.dirname(__FILE__)).join('..', 'fixtures', 'test', 'dot.directory', 'render_file_with_ivar')
-  end
-
-  def render_file_from_template
-    @secret = 'in the sauce'
-    @path = File.expand_path(File.join(File.dirname(__FILE__), '../fixtures/test/render_file_with_ivar'))
-  end
-
-  def render_file_with_locals
-    path = File.join(File.dirname(__FILE__), '../fixtures/test/render_file_with_locals')
-    render :file => path, :locals => {:secret => 'in the sauce'}
-  end
-
-  def render_file_as_string_with_locals
-    path = File.expand_path(File.join(File.dirname(__FILE__), '../fixtures/test/render_file_with_locals'))
-    render path, :locals => {:secret => 'in the sauce'}
-  end
-
-  def accessing_request_in_template
-    render :inline =>  "Hello: <%= request.host %>"
-  end
-
-  def accessing_logger_in_template
-    render :inline =>  "<%= logger.class %>"
-  end
-
-  def accessing_action_name_in_template
-    render :inline =>  "<%= action_name %>"
-  end
-
-  def accessing_controller_name_in_template
-    render :inline =>  "<%= controller_name %>"
-  end
-
-  # :ported:
-  def render_custom_code
-    render :text => "hello world", :status => 404
-  end
-
-  # :ported:
-  def render_text_with_nil
-    render :text => nil
-  end
-
-  # :ported:
-  def render_text_with_false
-    render :text => false
-  end
-
-  def render_text_with_resource
-    render :text => Customer.new("David")
-  end
-
-  # :ported:
-  def render_nothing_with_appendix
-    render :text => "appended"
-  end
-
-  # This test is testing 3 things:
-  #   render :file in AV      :ported:
-  #   render :template in AC  :ported:
-  #   setting content type
-  def render_xml_hello
-    @name = "David"
-    render :template => "test/hello"
-  end
-
-  def render_xml_hello_as_string_template
-    @name = "David"
-    render "test/hello"
-  end
-
-  def render_line_offset
-    render :inline => '<% raise %>', :locals => {:foo => 'bar'}
-  end
-
   def heading
     head :ok
   end
 
-  def greeting
-    # let's just rely on the template
-  end
-
-  # :ported:
-  def blank_response
-    render :text => ' '
-  end
-
-  # :ported:
-  def layout_test
-    render :action => "hello_world"
-  end
-
-  # :ported:
-  def builder_layout_test
-    @name = nil
-    render :action => "hello", :layout => "layouts/builder"
-  end
-
-  # :move: test this in Action View
-  def builder_partial_test
-    render :action => "hello_world_container"
-  end
-
-  # :ported:
-  def partials_list
-    @test_unchanged = 'hello'
-    @customers = [ Customer.new("david"), Customer.new("mary") ]
-    render :action => "list"
-  end
-
-  def partial_only
-    render :partial => true
-  end
-
-  def hello_in_a_string
-    @customers = [ Customer.new("david"), Customer.new("mary") ]
-    render :text => "How's there? " + render_to_string(:template => "test/list")
-  end
-
-  def accessing_params_in_template
-    render :inline => "Hello: <%= params[:name] %>"
-  end
-
-  def accessing_local_assigns_in_inline_template
-    name = params[:local_name]
-    render :inline => "<%= 'Goodbye, ' + local_name %>",
-           :locals => { :local_name => name }
-  end
-
-  def render_implicit_html_template_from_xhr_request
-  end
-
-  def render_implicit_js_template_without_layout
-  end
-
-  def formatted_html_erb
-  end
-
-  def formatted_xml_erb
-  end
-
-  def render_to_string_test
-    @foo = render_to_string :inline => "this is a test"
-  end
-
-  def default_render
-    @alternate_default_render ||= nil
-    if @alternate_default_render
-      @alternate_default_render.call
-    else
-      super
-    end
-  end
-
-  def render_action_hello_world_as_symbol
-    render :action => :hello_world
-  end
-
-  def layout_test_with_different_layout
-    render :action => "hello_world", :layout => "standard"
-  end
-
-  def layout_test_with_different_layout_and_string_action
-    render "hello_world", :layout => "standard"
-  end
-
-  def layout_test_with_different_layout_and_symbol_action
-    render :hello_world, :layout => "standard"
-  end
-
-  def rendering_without_layout
-    render :action => "hello_world", :layout => false
-  end
-
-  def layout_overriding_layout
-    render :action => "hello_world", :layout => "standard"
-  end
-
-  def rendering_nothing_on_layout
-    render :nothing => true
-  end
-
-  def render_to_string_with_assigns
-    @before = "i'm before the render"
-    render_to_string :text => "foo"
-    @after = "i'm after the render"
-    render :template => "test/hello_world"
-  end
-
-  def render_to_string_with_exception
-    render_to_string :file => "exception that will not be caught - this will certainly not work"
-  end
-
-  def render_to_string_with_caught_exception
-    @before = "i'm before the render"
-    begin
-      render_to_string :file => "exception that will be caught- hope my future instance vars still work!"
-    rescue
-    end
-    @after = "i'm after the render"
-    render :template => "test/hello_world"
-  end
-
-  def accessing_params_in_template_with_layout
-    render :layout => true, :inline =>  "Hello: <%= params[:name] %>"
-  end
-
-  # :ported:
-  def render_with_explicit_template
-    render :template => "test/hello_world"
-  end
-
-  def render_with_explicit_unescaped_template
-    render :template => "test/h*llo_world"
-  end
-
-  def render_with_explicit_escaped_template
-    render :template => "test/hello,world"
-  end
-
-  def render_with_explicit_string_template
-    render "test/hello_world"
-  end
-
-  # :ported:
-  def render_with_explicit_template_with_locals
-    render :template => "test/render_file_with_locals", :locals => { :secret => 'area51' }
-  end
-
   # :ported:
   def double_render
     render :text => "hello"
@@ -508,25 +167,6 @@ class TestController < ActionController::Base
     render :template => "test/hello_world_from_rxml", :handlers => [:builder]
   end
 
-  def action_talk_to_layout
-    # Action template sets variable that's picked up by layout
-  end
-
-  # :addressed:
-  def render_text_with_assigns
-    @hello = "world"
-    render :text => "foo"
-  end
-
-  def yield_content_for
-    render :action => "content_for", :layout => "yield"
-  end
-
-  def render_content_type_from_body
-    response.content_type = Mime::RSS
-    render :text => "hello world!"
-  end
-
   def head_created
     head :created
   end
@@ -571,162 +211,6 @@ class TestController < ActionController::Base
     head :forbidden, :x_custom_header => "something"
   end
 
-  def render_using_layout_around_block
-    render :action => "using_layout_around_block"
-  end
-
-  def render_using_layout_around_block_in_main_layout_and_within_content_for_layout
-    render :action => "using_layout_around_block", :layout => "layouts/block_with_layout"
-  end
-
-  def partial_formats_html
-    render :partial => 'partial', :formats => [:html]
-  end
-
-  def partial
-    render :partial => 'partial'
-  end
-
-  def partial_html_erb
-    render :partial => 'partial_html_erb'
-  end
-
-  def render_to_string_with_partial
-    @partial_only = render_to_string :partial => "partial_only"
-    @partial_with_locals = render_to_string :partial => "customer", :locals => { :customer => Customer.new("david") }
-    render :template => "test/hello_world"
-  end
-
-  def render_to_string_with_template_and_html_partial
-    @text = render_to_string :template => "test/with_partial", :formats => [:text]
-    @html = render_to_string :template => "test/with_partial", :formats => [:html]
-    render :template => "test/with_html_partial"
-  end
-
-  def render_to_string_and_render_with_different_formats
-    @html = render_to_string :template => "test/with_partial", :formats => [:html]
-    render :template => "test/with_partial", :formats => [:text]
-  end
-
-  def render_template_within_a_template_with_other_format
-    render  :template => "test/with_xml_template",
-            :formats  => [:html],
-            :layout   => "with_html_partial"
-  end
-
-  def partial_with_counter
-    render :partial => "counter", :locals => { :counter_counter => 5 }
-  end
-
-  def partial_with_locals
-    render :partial => "customer", :locals => { :customer => Customer.new("david") }
-  end
-
-  def partial_with_form_builder
-    render :partial => ActionView::Helpers::FormBuilder.new(:post, nil, view_context, {})
-  end
-
-  def partial_with_form_builder_subclass
-    render :partial => LabellingFormBuilder.new(:post, nil, view_context, {})
-  end
-
-  def partial_collection
-    render :partial => "customer", :collection => [ Customer.new("david"), Customer.new("mary") ]
-  end
-
-  def partial_collection_with_as
-    render :partial => "customer_with_var", :collection => [ Customer.new("david"), Customer.new("mary") ], :as => :customer
-  end
-
-  def partial_collection_with_counter
-    render :partial => "customer_counter", :collection => [ Customer.new("david"), Customer.new("mary") ]
-  end
-
-  def partial_collection_with_as_and_counter
-    render :partial => "customer_counter_with_as", :collection => [ Customer.new("david"), Customer.new("mary") ], :as => :client
-  end
-
-  def partial_collection_with_locals
-    render :partial => "customer_greeting", :collection => [ Customer.new("david"), Customer.new("mary") ], :locals => { :greeting => "Bonjour" }
-  end
-
-  def partial_collection_with_spacer
-    render :partial => "customer", :spacer_template => "partial_only", :collection => [ Customer.new("david"), Customer.new("mary") ]
-  end
-
-  def partial_collection_with_spacer_which_uses_render
-    render :partial => "customer", :spacer_template => "partial_with_partial", :collection => [ Customer.new("david"), Customer.new("mary") ]
-  end
-
-  def partial_collection_shorthand_with_locals
-    render :partial => [ Customer.new("david"), Customer.new("mary") ], :locals => { :greeting => "Bonjour" }
-  end
-
-  def partial_collection_shorthand_with_different_types_of_records
-    render :partial => [
-        BadCustomer.new("mark"),
-        GoodCustomer.new("craig"),
-        BadCustomer.new("john"),
-        GoodCustomer.new("zach"),
-        GoodCustomer.new("brandon"),
-        BadCustomer.new("dan") ],
-      :locals => { :greeting => "Bonjour" }
-  end
-
-  def empty_partial_collection
-    render :partial => "customer", :collection => []
-  end
-
-  def partial_collection_shorthand_with_different_types_of_records_with_counter
-    partial_collection_shorthand_with_different_types_of_records
-  end
-
-  def missing_partial
-    render :partial => 'thisFileIsntHere'
-  end
-
-  def partial_with_hash_object
-    render :partial => "hash_object", :object => {:first_name => "Sam"}
-  end
-
-  def partial_with_nested_object
-    render :partial => "quiz/questions/question", :object => Quiz::Question.new("first")
-  end
-
-  def partial_with_nested_object_shorthand
-    render Quiz::Question.new("first")
-  end
-
-  def partial_hash_collection
-    render :partial => "hash_object", :collection => [ {:first_name => "Pratik"}, {:first_name => "Amy"} ]
-  end
-
-  def partial_hash_collection_with_locals
-    render :partial => "hash_greeting", :collection => [ {:first_name => "Pratik"}, {:first_name => "Amy"} ], :locals => { :greeting => "Hola" }
-  end
-
-  def partial_with_implicit_local_assignment
-    @customer = Customer.new("Marcel")
-    render :partial => "customer"
-  end
-
-  def render_call_to_partial_with_layout
-    render :action => "calling_partial_with_layout"
-  end
-
-  def render_call_to_partial_with_layout_in_main_layout_and_within_content_for_layout
-    render :action => "calling_partial_with_layout", :layout => "layouts/partial_with_layout"
-  end
-
-  before_action only: :render_with_filters do
-    request.format = :xml
-  end
-
-  # Ensure that the before filter is executed *before* self.formats is set.
-  def render_with_filters
-    render :action => :formatted_xml_erb
-  end
-
   private
 
     def set_variable_for_layout
@@ -755,6 +239,8 @@ class TestController < ActionController::Base
 end
 
 class MetalTestController < ActionController::Metal
+  include AbstractController::Rendering
+  include ActionView::Rendering
   include ActionController::Rendering
 
   def accessing_logger_in_template
@@ -762,788 +248,9 @@ class MetalTestController < ActionController::Metal
   end
 end
 
-class RenderTest < ActionController::TestCase
-  tests TestController
-
-  def setup
-    # enable a logger so that (e.g.) the benchmarking stuff runs, so we can get
-    # a more accurate simulation of what happens in "real life".
-    super
-    @controller.logger      = ActiveSupport::Logger.new(nil)
-    ActionView::Base.logger = ActiveSupport::Logger.new(nil)
-
-    @request.host = "www.nextangle.com"
-  end
-
-  # :ported:
-  def test_simple_show
-    get :hello_world
-    assert_response 200
-    assert_response :success
-    assert_template "test/hello_world"
-    assert_equal "<html>Hello world!</html>", @response.body
-  end
-
-  # :ported:
-  def test_renders_default_template_for_missing_action
-    get :'hyphen-ated'
-    assert_template 'test/hyphen-ated'
-  end
-
-  # :ported:
-  def test_render
-    get :render_hello_world
-    assert_template "test/hello_world"
-  end
-
-  def test_line_offset
-    get :render_line_offset
-    flunk "the action should have raised an exception"
-  rescue StandardError => exc
-    line = exc.backtrace.first
-    assert(line =~ %r{:(\d+):})
-    assert_equal "1", $1,
-      "The line offset is wrong, perhaps the wrong exception has been raised, exception was: #{exc.inspect}"
-  end
-
-  # :ported: compatibility
-  def test_render_with_forward_slash
-    get :render_hello_world_with_forward_slash
-    assert_template "test/hello_world"
-  end
-
-  # :ported:
-  def test_render_in_top_directory
-    get :render_template_in_top_directory
-    assert_template "shared"
-    assert_equal "Elastica", @response.body
-  end
-
-  # :ported:
-  def test_render_in_top_directory_with_slash
-    get :render_template_in_top_directory_with_slash
-    assert_template "shared"
-    assert_equal "Elastica", @response.body
-  end
-
-  # :ported:
-  def test_render_from_variable
-    get :render_hello_world_from_variable
-    assert_equal "hello david", @response.body
-  end
-
-  # :ported:
-  def test_render_action
-    get :render_action_hello_world
-    assert_template "test/hello_world"
-  end
-
-  def test_render_action_upcased
-    assert_raise ActionView::MissingTemplate do
-      get :render_action_upcased_hello_world
-    end
-  end
-
-  # :ported:
-  def test_render_action_hello_world_as_string
-    get :render_action_hello_world_as_string
-    assert_equal "Hello world!", @response.body
-    assert_template "test/hello_world"
-  end
-
-  # :ported:
-  def test_render_action_with_symbol
-    get :render_action_hello_world_with_symbol
-    assert_template "test/hello_world"
-  end
-
-  # :ported:
-  def test_render_text
-    get :render_text_hello_world
-    assert_equal "hello world", @response.body
-  end
-
-  # :ported:
-  def test_do_with_render_text_and_layout
-    get :render_text_hello_world_with_layout
-    assert_equal "<html>hello world, I am here!</html>", @response.body
-  end
-
-  # :ported:
-  def test_do_with_render_action_and_layout_false
-    get :hello_world_with_layout_false
-    assert_equal 'Hello world!', @response.body
-  end
-
-  # :ported:
-  def test_render_file_with_instance_variables
-    get :render_file_with_instance_variables
-    assert_equal "The secret is in the sauce\n", @response.body
-  end
-
-  def test_render_file
-    get :hello_world_file
-    assert_equal "Hello world!", @response.body
-  end
-
-  # :ported:
-  def test_render_file_as_string_with_instance_variables
-    get :render_file_as_string_with_instance_variables
-    assert_equal "The secret is in the sauce\n", @response.body
-  end
-
-  # :ported:
-  def test_render_file_not_using_full_path
-    get :render_file_not_using_full_path
-    assert_equal "The secret is in the sauce\n", @response.body
-  end
-
-  # :ported:
-  def test_render_file_not_using_full_path_with_dot_in_path
-    get :render_file_not_using_full_path_with_dot_in_path
-    assert_equal "The secret is in the sauce\n", @response.body
-  end
-
-  # :ported:
-  def test_render_file_using_pathname
-    get :render_file_using_pathname
-    assert_equal "The secret is in the sauce\n", @response.body
-  end
-
-  # :ported:
-  def test_render_file_with_locals
-    get :render_file_with_locals
-    assert_equal "The secret is in the sauce\n", @response.body
-  end
-
-  # :ported:
-  def test_render_file_as_string_with_locals
-    get :render_file_as_string_with_locals
-    assert_equal "The secret is in the sauce\n", @response.body
-  end
-
-  # :assessed:
-  def test_render_file_from_template
-    get :render_file_from_template
-    assert_equal "The secret is in the sauce\n", @response.body
-  end
-
-  # :ported:
-  def test_render_custom_code
-    get :render_custom_code
-    assert_response 404
-    assert_response :missing
-    assert_equal 'hello world', @response.body
-  end
-
-  # :ported:
-  def test_render_text_with_nil
-    get :render_text_with_nil
-    assert_response 200
-    assert_equal ' ', @response.body
-  end
-
-  # :ported:
-  def test_render_text_with_false
-    get :render_text_with_false
-    assert_equal 'false', @response.body
-  end
-
-  # :ported:
-  def test_render_nothing_with_appendix
-    get :render_nothing_with_appendix
-    assert_response 200
-    assert_equal 'appended', @response.body
-  end
-
-  def test_render_text_with_resource
-    get :render_text_with_resource
-    assert_equal 'name: "David"', @response.body
-  end
-
-  # :ported:
-  def test_attempt_to_access_object_method
-    assert_raise(AbstractController::ActionNotFound, "No action responded to [clone]") { get :clone }
-  end
-
-  # :ported:
-  def test_private_methods
-    assert_raise(AbstractController::ActionNotFound, "No action responded to [determine_layout]") { get :determine_layout }
-  end
-
-  # :ported:
-  def test_access_to_request_in_view
-    get :accessing_request_in_template
-    assert_equal "Hello: www.nextangle.com", @response.body
-  end
-
-  def test_access_to_logger_in_view
-    get :accessing_logger_in_template
-    assert_equal "ActiveSupport::Logger", @response.body
-  end
-
-  # :ported:
-  def test_access_to_action_name_in_view
-    get :accessing_action_name_in_template
-    assert_equal "accessing_action_name_in_template", @response.body
-  end
-
-  # :ported:
-  def test_access_to_controller_name_in_view
-    get :accessing_controller_name_in_template
-    assert_equal "test", @response.body # name is explicitly set in the controller.
-  end
-
-  # :ported:
-  def test_render_xml
-    get :render_xml_hello
-    assert_equal "<html>\n  <p>Hello David</p>\n<p>This is grand!</p>\n</html>\n", @response.body
-    assert_equal "application/xml", @response.content_type
-  end
-
-  # :ported:
-  def test_render_xml_as_string_template
-    get :render_xml_hello_as_string_template
-    assert_equal "<html>\n  <p>Hello David</p>\n<p>This is grand!</p>\n</html>\n", @response.body
-    assert_equal "application/xml", @response.content_type
-  end
-
-  # :ported:
-  def test_render_xml_with_default
-    get :greeting
-    assert_equal "<p>This is grand!</p>\n", @response.body
-  end
-
-  # :move: test in AV
-  def test_render_xml_with_partial
-    get :builder_partial_test
-    assert_equal "<test>\n  <hello/>\n</test>\n", @response.body
-  end
-
-  # :ported:
-  def test_layout_rendering
-    get :layout_test
-    assert_equal "<html>Hello world!</html>", @response.body
-  end
-
-  def test_render_xml_with_layouts
-    get :builder_layout_test
-    assert_equal "<wrapper>\n<html>\n  <p>Hello </p>\n<p>This is grand!</p>\n</html>\n</wrapper>\n", @response.body
-  end
-
-  def test_partials_list
-    get :partials_list
-    assert_equal "goodbyeHello: davidHello: marygoodbye\n", @response.body
-  end
-
-  def test_render_to_string
-    get :hello_in_a_string
-    assert_equal "How's there? goodbyeHello: davidHello: marygoodbye\n", @response.body
-  end
-
-  def test_render_to_string_resets_assigns
-    get :render_to_string_test
-    assert_equal "The value of foo is: ::this is a test::\n", @response.body
-  end
-
-  def test_render_to_string_inline
-    get :render_to_string_with_inline_and_render
-    assert_template "test/hello_world"
-  end
-
-  # :ported:
-  def test_nested_rendering
-    @controller = Fun::GamesController.new
-    get :hello_world
-    assert_equal "Living in a nested world", @response.body
-  end
-
-  def test_accessing_params_in_template
-    get :accessing_params_in_template, :name => "David"
-    assert_equal "Hello: David", @response.body
-  end
-
-  def test_accessing_local_assigns_in_inline_template
-    get :accessing_local_assigns_in_inline_template, :local_name => "Local David"
-    assert_equal "Goodbye, Local David", @response.body
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_should_implicitly_render_html_template_from_xhr_request
-    xhr :get, :render_implicit_html_template_from_xhr_request
-    assert_equal "XHR!\nHello HTML!", @response.body
-  end
-
-  def test_should_implicitly_render_js_template_without_layout
-    get :render_implicit_js_template_without_layout, :format => :js
-    assert_no_match %r{<html>}, @response.body
-  end
-
-  def test_should_render_formatted_template
-    get :formatted_html_erb
-    assert_equal 'formatted html erb', @response.body
-  end
-
-  def test_should_render_formatted_html_erb_template
-    get :formatted_xml_erb
-    assert_equal '<test>passed formatted html erb</test>', @response.body
-  end
-
-  def test_should_render_formatted_html_erb_template_with_bad_accepts_header
-    @request.env["HTTP_ACCEPT"] = "; a=dsf"
-    get :formatted_xml_erb
-    assert_equal '<test>passed formatted html erb</test>', @response.body
-  end
-
-  def test_should_render_formatted_html_erb_template_with_faulty_accepts_header
-    @request.accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, appliction/x-shockwave-flash, */*"
-    get :formatted_xml_erb
-    assert_equal '<test>passed formatted html erb</test>', @response.body
-  end
-
-  def test_layout_test_with_different_layout
-    get :layout_test_with_different_layout
-    assert_equal "<html>Hello world!</html>", @response.body
-  end
-
-  def test_layout_test_with_different_layout_and_string_action
-    get :layout_test_with_different_layout_and_string_action
-    assert_equal "<html>Hello world!</html>", @response.body
-  end
-
-  def test_layout_test_with_different_layout_and_symbol_action
-    get :layout_test_with_different_layout_and_symbol_action
-    assert_equal "<html>Hello world!</html>", @response.body
-  end
-
-  def test_rendering_without_layout
-    get :rendering_without_layout
-    assert_equal "Hello world!", @response.body
-  end
-
-  def test_layout_overriding_layout
-    get :layout_overriding_layout
-    assert_no_match %r{<title>}, @response.body
-  end
-
-  def test_rendering_nothing_on_layout
-    get :rendering_nothing_on_layout
-    assert_equal " ", @response.body
-  end
-
-  def test_render_to_string_doesnt_break_assigns
-    get :render_to_string_with_assigns
-    assert_equal "i'm before the render", assigns(:before)
-    assert_equal "i'm after the render", assigns(:after)
-  end
-
-  def test_bad_render_to_string_still_throws_exception
-    assert_raise(ActionView::MissingTemplate) { get :render_to_string_with_exception }
-  end
-
-  def test_render_to_string_that_throws_caught_exception_doesnt_break_assigns
-    assert_nothing_raised { get :render_to_string_with_caught_exception }
-    assert_equal "i'm before the render", assigns(:before)
-    assert_equal "i'm after the render", assigns(:after)
-  end
-
-  def test_accessing_params_in_template_with_layout
-    get :accessing_params_in_template_with_layout, :name => "David"
-    assert_equal "<html>Hello: David</html>", @response.body
-  end
-
-  def test_render_with_explicit_template
-    get :render_with_explicit_template
-    assert_response :success
-  end
-
-  def test_render_with_explicit_unescaped_template
-    assert_raise(ActionView::MissingTemplate) { get :render_with_explicit_unescaped_template }
-    get :render_with_explicit_escaped_template
-    assert_equal "Hello w*rld!", @response.body
-  end
-
-  def test_render_with_explicit_string_template
-    get :render_with_explicit_string_template
-    assert_equal "<html>Hello world!</html>", @response.body
-  end
-
-  def test_render_with_filters
-    get :render_with_filters
-    assert_equal "<test>passed formatted xml erb</test>", @response.body
-  end
-
-  # :ported:
-  def test_double_render
-    assert_raise(AbstractController::DoubleRenderError) { get :double_render }
-  end
-
-  def test_double_redirect
-    assert_raise(AbstractController::DoubleRenderError) { get :double_redirect }
-  end
-
-  def test_render_and_redirect
-    assert_raise(AbstractController::DoubleRenderError) { get :render_and_redirect }
-  end
-
-  # specify the one exception to double render rule - render_to_string followed by render
-  def test_render_to_string_and_render
-    get :render_to_string_and_render
-    assert_equal("Hi web users! here is some cached stuff", @response.body)
-  end
-
-  def test_rendering_with_conflicting_local_vars
-    get :rendering_with_conflicting_local_vars
-    assert_equal("First: David\nSecond: Stephan\nThird: David\nFourth: David\nFifth: ", @response.body)
-  end
-
-  def test_action_talk_to_layout
-    get :action_talk_to_layout
-    assert_equal "<title>Talking to the layout</title>\nAction was here!", @response.body
-  end
-
-  # :addressed:
-  def test_render_text_with_assigns
-    get :render_text_with_assigns
-    assert_equal "world", assigns["hello"]
-  end
-
-  # :ported:
-  def test_template_with_locals
-    get :render_with_explicit_template_with_locals
-    assert_equal "The secret is area51\n", @response.body
-  end
-
-  def test_yield_content_for
-    get :yield_content_for
-    assert_equal "<title>Putting stuff in the title!</title>\nGreat stuff!\n", @response.body
-  end
-
-  def test_overwritting_rendering_relative_file_with_extension
-    get :hello_world_from_rxml_using_template
-    assert_equal "<html>\n  <p>Hello</p>\n</html>\n", @response.body
-
-    get :hello_world_from_rxml_using_action
-    assert_equal "<html>\n  <p>Hello</p>\n</html>\n", @response.body
-  end
-
-  def test_head_created
-    post :head_created
-    assert @response.body.blank?
-    assert_response :created
-  end
-
-  def test_head_created_with_application_json_content_type
-    post :head_created_with_application_json_content_type
-    assert @response.body.blank?
-    assert_equal "application/json", @response.header["Content-Type"]
-    assert_response :created
-  end
-
-  def test_head_ok_with_image_png_content_type
-    post :head_ok_with_image_png_content_type
-    assert @response.body.blank?
-    assert_equal "image/png", @response.header["Content-Type"]
-    assert_response :ok
-  end
-
-  def test_head_with_location_header
-    get :head_with_location_header
-    assert @response.body.blank?
-    assert_equal "/foo", @response.headers["Location"]
-    assert_response :ok
-  end
-
-  def test_head_with_location_object
-    with_routing do |set|
-      set.draw do
-        resources :customers
-        get ':controller/:action'
-      end
-
-      get :head_with_location_object
-      assert @response.body.blank?
-      assert_equal "http://www.nextangle.com/customers/1", @response.headers["Location"]
-      assert_response :ok
-    end
-  end
-
-  def test_head_with_custom_header
-    get :head_with_custom_header
-    assert @response.body.blank?
-    assert_equal "something", @response.headers["X-Custom-Header"]
-    assert_response :ok
-  end
-
-  def test_head_with_www_authenticate_header
-    get :head_with_www_authenticate_header
-    assert @response.body.blank?
-    assert_equal "something", @response.headers["WWW-Authenticate"]
-    assert_response :ok
-  end
-
-  def test_head_with_symbolic_status
-    get :head_with_symbolic_status, :status => "ok"
-    assert_equal 200, @response.status
-    assert_response :ok
-
-    get :head_with_symbolic_status, :status => "not_found"
-    assert_equal 404, @response.status
-    assert_response :not_found
-
-    get :head_with_symbolic_status, :status => "no_content"
-    assert_equal 204, @response.status
-    assert !@response.headers.include?('Content-Length')
-    assert_response :no_content
-
-    Rack::Utils::SYMBOL_TO_STATUS_CODE.each do |status, code|
-      get :head_with_symbolic_status, :status => status.to_s
-      assert_equal code, @response.response_code
-      assert_response status
-    end
-  end
-
-  def test_head_with_integer_status
-    Rack::Utils::HTTP_STATUS_CODES.each do |code, message|
-      get :head_with_integer_status, :status => code.to_s
-      assert_equal message, @response.message
-    end
-  end
-
-  def test_head_with_string_status
-    get :head_with_string_status, :status => "404 Eat Dirt"
-    assert_equal 404, @response.response_code
-    assert_equal "Not Found", @response.message
-    assert_response :not_found
-  end
-
-  def test_head_with_status_code_first
-    get :head_with_status_code_first
-    assert_equal 403, @response.response_code
-    assert_equal "Forbidden", @response.message
-    assert_equal "something", @response.headers["X-Custom-Header"]
-    assert_response :forbidden
-  end
-
-  def test_using_layout_around_block
-    get :render_using_layout_around_block
-    assert_equal "Before (David)\nInside from block\nAfter", @response.body
-  end
-
-  def test_using_layout_around_block_in_main_layout_and_within_content_for_layout
-    get :render_using_layout_around_block_in_main_layout_and_within_content_for_layout
-    assert_equal "Before (Anthony)\nInside from first block in layout\nAfter\nBefore (David)\nInside from block\nAfter\nBefore (Ramm)\nInside from second block in layout\nAfter\n", @response.body
-  end
-
-  def test_partial_only
-    get :partial_only
-    assert_equal "only partial", @response.body
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_should_render_html_formatted_partial
-    get :partial
-    assert_equal "partial html", @response.body
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_render_html_formatted_partial_even_with_other_mime_time_in_accept
-    @request.accept = "text/javascript, text/html"
-
-    get :partial_html_erb
-
-    assert_equal "partial.html.erb", @response.body.strip
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_should_render_html_partial_with_formats
-    get :partial_formats_html
-    assert_equal "partial html", @response.body
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_render_to_string_partial
-    get :render_to_string_with_partial
-    assert_equal "only partial", assigns(:partial_only)
-    assert_equal "Hello: david", assigns(:partial_with_locals)
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_render_to_string_with_template_and_html_partial
-    get :render_to_string_with_template_and_html_partial
-    assert_equal "**only partial**\n", assigns(:text)
-    assert_equal "<strong>only partial</strong>\n", assigns(:html)
-    assert_equal "<strong>only html partial</strong>\n", @response.body
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_render_to_string_and_render_with_different_formats
-    get :render_to_string_and_render_with_different_formats
-    assert_equal "<strong>only partial</strong>\n", assigns(:html)
-    assert_equal "**only partial**\n", @response.body
-    assert_equal "text/plain", @response.content_type
-  end
-
-  def test_render_template_within_a_template_with_other_format
-    get :render_template_within_a_template_with_other_format
-    expected = "only html partial<p>This is grand!</p>"
-    assert_equal expected, @response.body.strip
-    assert_equal "text/html", @response.content_type
-  end
-
-  def test_partial_with_counter
-    get :partial_with_counter
-    assert_equal "5", @response.body
-  end
-
-  def test_partial_with_locals
-    get :partial_with_locals
-    assert_equal "Hello: david", @response.body
-  end
-
-  def test_partial_with_form_builder
-    get :partial_with_form_builder
-    assert_match(/<label/, @response.body)
-    assert_template('test/_form')
-  end
-
-  def test_partial_with_form_builder_subclass
-    get :partial_with_form_builder_subclass
-    assert_match(/<label/, @response.body)
-    assert_template('test/_labelling_form')
-  end
-
-  def test_nested_partial_with_form_builder
-    @controller = Fun::GamesController.new
-    get :nested_partial_with_form_builder
-    assert_match(/<label/, @response.body)
-    assert_template('fun/games/_form')
-  end
-
-  def test_namespaced_object_partial
-    @controller = Quiz::QuestionsController.new
-    get :new
-    assert_equal "Namespaced Partial", @response.body
-  end
-
-  def test_partial_collection
-    get :partial_collection
-    assert_equal "Hello: davidHello: mary", @response.body
-  end
-
-  def test_partial_collection_with_as
-    get :partial_collection_with_as
-    assert_equal "david david davidmary mary mary", @response.body
-  end
-
-  def test_partial_collection_with_counter
-    get :partial_collection_with_counter
-    assert_equal "david0mary1", @response.body
-  end
-
-  def test_partial_collection_with_as_and_counter
-    get :partial_collection_with_as_and_counter
-    assert_equal "david0mary1", @response.body
-  end
-
-  def test_partial_collection_with_locals
-    get :partial_collection_with_locals
-    assert_equal "Bonjour: davidBonjour: mary", @response.body
-  end
-
-  def test_locals_option_to_assert_template_is_not_supported
-    get :partial_collection_with_locals
-
-    warning_buffer = StringIO.new
-    $stderr = warning_buffer
-
-    assert_template partial: 'customer_greeting', locals: { greeting: 'Bonjour' }
-    assert_equal "the :locals option to #assert_template is only supported in a ActionView::TestCase\n", warning_buffer.string
-  ensure
-    $stderr = STDERR
-  end
-
-  def test_partial_collection_with_spacer
-    get :partial_collection_with_spacer
-    assert_equal "Hello: davidonly partialHello: mary", @response.body
-    assert_template :partial => '_customer'
-  end
-
-  def test_partial_collection_with_spacer_which_uses_render
-    get :partial_collection_with_spacer_which_uses_render
-    assert_equal "Hello: davidpartial html\npartial with partial\nHello: mary", @response.body
-    assert_template :partial => '_customer'
-  end
-
-  def test_partial_collection_shorthand_with_locals
-    get :partial_collection_shorthand_with_locals
-    assert_equal "Bonjour: davidBonjour: mary", @response.body
-    assert_template :partial => 'customers/_customer', :count => 2
-    assert_template :partial => '_completely_fake_and_made_up_template_that_cannot_possibly_be_rendered', :count => 0
-  end
-
-  def test_partial_collection_shorthand_with_different_types_of_records
-    get :partial_collection_shorthand_with_different_types_of_records
-    assert_equal "Bonjour bad customer: mark0Bonjour good customer: craig1Bonjour bad customer: john2Bonjour good customer: zach3Bonjour good customer: brandon4Bonjour bad customer: dan5", @response.body
-    assert_template :partial => 'good_customers/_good_customer', :count => 3
-    assert_template :partial => 'bad_customers/_bad_customer', :count => 3
-  end
-
-  def test_empty_partial_collection
-    get :empty_partial_collection
-    assert_equal " ", @response.body
-    assert_template :partial => false
-  end
-
-  def test_partial_with_hash_object
-    get :partial_with_hash_object
-    assert_equal "Sam\nmaS\n", @response.body
-  end
-
-  def test_partial_with_nested_object
-    get :partial_with_nested_object
-    assert_equal "first", @response.body
-  end
-
-  def test_partial_with_nested_object_shorthand
-    get :partial_with_nested_object_shorthand
-    assert_equal "first", @response.body
-  end
-
-  def test_hash_partial_collection
-    get :partial_hash_collection
-    assert_equal "Pratik\nkitarP\nAmy\nymA\n", @response.body
-  end
-
-  def test_partial_hash_collection_with_locals
-    get :partial_hash_collection_with_locals
-    assert_equal "Hola: PratikHola: Amy", @response.body
-  end
-
-  def test_render_missing_partial_template
-    assert_raise(ActionView::MissingTemplate) do
-      get :missing_partial
-    end
-  end
-
-  def test_render_call_to_partial_with_layout
-    get :render_call_to_partial_with_layout
-    assert_equal "Before (David)\nInside from partial (David)\nAfter", @response.body
-  end
-
-  def test_render_call_to_partial_with_layout_in_main_layout_and_within_content_for_layout
-    get :render_call_to_partial_with_layout_in_main_layout_and_within_content_for_layout
-    assert_equal "Before (Anthony)\nInside from partial (Anthony)\nAfter\nBefore (David)\nInside from partial (David)\nAfter\nBefore (Ramm)\nInside from partial (Ramm)\nAfter", @response.body
-  end
-end
-
 class ExpiresInRenderTest < ActionController::TestCase
   tests TestController
 
-  def setup
-    @request.host = "www.nextangle.com"
-  end
-
   def test_expires_in_header
     get :conditional_hello_with_expires_in
     assert_equal "max-age=60, private", @response.headers["Cache-Control"]
@@ -1598,7 +305,6 @@ class LastModifiedRenderTest < ActionController::TestCase
 
   def setup
     super
-    @request.host = "www.nextangle.com"
     @last_modified = Time.now.utc.beginning_of_day.httpdate
   end
 
@@ -1683,7 +389,6 @@ class EtagRenderTest < ActionController::TestCase
 
   def setup
     super
-    @request.host = "www.nextangle.com"
   end
 
   def test_multiple_etags
@@ -1711,7 +416,6 @@ class EtagRenderTest < ActionController::TestCase
   end
 end
 
-
 class MetalRenderTest < ActionController::TestCase
   tests MetalTestController
 
@@ -1720,3 +424,109 @@ class MetalRenderTest < ActionController::TestCase
     assert_equal "NilClass", @response.body
   end
 end
+
+class HeadRenderTest < ActionController::TestCase
+  tests TestController
+
+  def setup
+    @request.host = "www.nextangle.com"
+  end
+
+  def test_head_created
+    post :head_created
+    assert @response.body.blank?
+    assert_response :created
+  end
+
+  def test_head_created_with_application_json_content_type
+    post :head_created_with_application_json_content_type
+    assert @response.body.blank?
+    assert_equal "application/json", @response.header["Content-Type"]
+    assert_response :created
+  end
+
+  def test_head_ok_with_image_png_content_type
+    post :head_ok_with_image_png_content_type
+    assert @response.body.blank?
+    assert_equal "image/png", @response.header["Content-Type"]
+    assert_response :ok
+  end
+
+  def test_head_with_location_header
+    get :head_with_location_header
+    assert @response.body.blank?
+    assert_equal "/foo", @response.headers["Location"]
+    assert_response :ok
+  end
+
+  def test_head_with_location_object
+    with_routing do |set|
+      set.draw do
+        resources :customers
+        get ':controller/:action'
+      end
+
+      get :head_with_location_object
+      assert @response.body.blank?
+      assert_equal "http://www.nextangle.com/customers/1", @response.headers["Location"]
+      assert_response :ok
+    end
+  end
+
+  def test_head_with_custom_header
+    get :head_with_custom_header
+    assert @response.body.blank?
+    assert_equal "something", @response.headers["X-Custom-Header"]
+    assert_response :ok
+  end
+
+  def test_head_with_www_authenticate_header
+    get :head_with_www_authenticate_header
+    assert @response.body.blank?
+    assert_equal "something", @response.headers["WWW-Authenticate"]
+    assert_response :ok
+  end
+
+  def test_head_with_symbolic_status
+    get :head_with_symbolic_status, :status => "ok"
+    assert_equal 200, @response.status
+    assert_response :ok
+
+    get :head_with_symbolic_status, :status => "not_found"
+    assert_equal 404, @response.status
+    assert_response :not_found
+
+    get :head_with_symbolic_status, :status => "no_content"
+    assert_equal 204, @response.status
+    assert !@response.headers.include?('Content-Length')
+    assert_response :no_content
+
+    Rack::Utils::SYMBOL_TO_STATUS_CODE.each do |status, code|
+      get :head_with_symbolic_status, :status => status.to_s
+      assert_equal code, @response.response_code
+      assert_response status
+    end
+  end
+
+  def test_head_with_integer_status
+    Rack::Utils::HTTP_STATUS_CODES.each do |code, message|
+      get :head_with_integer_status, :status => code.to_s
+      assert_equal message, @response.message
+    end
+  end
+
+  def test_head_with_string_status
+    get :head_with_string_status, :status => "404 Eat Dirt"
+    assert_equal 404, @response.response_code
+    assert_equal "Not Found", @response.message
+    assert_response :not_found
+  end
+
+  def test_head_with_status_code_first
+    get :head_with_status_code_first
+    assert_equal 403, @response.response_code
+    assert_equal "Forbidden", @response.message
+    assert_equal "something", @response.headers["X-Custom-Header"]
+    assert_response :forbidden
+  end
+end
\ No newline at end of file
diff --git a/actionpack/test/controller/view_paths_test.rb b/actionpack/test/controller/view_paths_test.rb
deleted file mode 100644
index c6e7a523b9..0000000000
--- a/actionpack/test/controller/view_paths_test.rb
+++ /dev/null
@@ -1,174 +0,0 @@
-require 'abstract_unit'
-
-class ViewLoadPathsTest < ActionController::TestCase
-  class TestController < ActionController::Base
-    def self.controller_path() "test" end
-
-    before_action :add_view_path, only: :hello_world_at_request_time
-
-    def hello_world() end
-    def hello_world_at_request_time() render(:action => 'hello_world') end
-
-    private
-      def add_view_path
-        prepend_view_path "#{FIXTURE_LOAD_PATH}/override"
-      end
-  end
-
-  module Test
-    class SubController < ActionController::Base
-      layout 'test/sub'
-      def hello_world; render(:template => 'test/hello_world'); end
-    end
-  end
-
-  def setup
-    @request  = ActionController::TestRequest.new
-    @response = ActionController::TestResponse.new
-    @controller = TestController.new
-    @paths = TestController.view_paths
-  end
-
-  def teardown
-    TestController.view_paths = @paths
-  end
-
-  def expand(array)
-    array.map {|x| File.expand_path(x.to_s)}
-  end
-
-  def assert_paths(*paths)
-    controller = paths.first.is_a?(Class) ? paths.shift : @controller
-    assert_equal expand(paths), controller.view_paths.map { |p| p.to_s }
-  end
-
-  def test_template_load_path_was_set_correctly
-    assert_paths FIXTURE_LOAD_PATH
-  end
-
-  def test_controller_appends_view_path_correctly
-    @controller.append_view_path 'foo'
-    assert_paths(FIXTURE_LOAD_PATH, "foo")
-
-    @controller.append_view_path(%w(bar baz))
-    assert_paths(FIXTURE_LOAD_PATH, "foo", "bar", "baz")
-
-    @controller.append_view_path(FIXTURE_LOAD_PATH)
-    assert_paths(FIXTURE_LOAD_PATH, "foo", "bar", "baz", FIXTURE_LOAD_PATH)
-  end
-
-  def test_controller_prepends_view_path_correctly
-    @controller.prepend_view_path 'baz'
-    assert_paths("baz", FIXTURE_LOAD_PATH)
-
-    @controller.prepend_view_path(%w(foo bar))
-    assert_paths "foo", "bar", "baz", FIXTURE_LOAD_PATH
-
-    @controller.prepend_view_path(FIXTURE_LOAD_PATH)
-    assert_paths FIXTURE_LOAD_PATH, "foo", "bar", "baz", FIXTURE_LOAD_PATH
-  end
-
-  def test_template_appends_view_path_correctly
-    @controller.instance_variable_set :@template, ActionView::Base.new(TestController.view_paths, {}, @controller)
-    class_view_paths = TestController.view_paths
-
-    @controller.append_view_path 'foo'
-    assert_paths FIXTURE_LOAD_PATH, "foo"
-
-    @controller.append_view_path(%w(bar baz))
-    assert_paths FIXTURE_LOAD_PATH, "foo", "bar", "baz"
-    assert_paths TestController, *class_view_paths
-  end
-
-  def test_template_prepends_view_path_correctly
-    @controller.instance_variable_set :@template, ActionView::Base.new(TestController.view_paths, {}, @controller)
-    class_view_paths = TestController.view_paths
-
-    @controller.prepend_view_path 'baz'
-    assert_paths "baz", FIXTURE_LOAD_PATH
-
-    @controller.prepend_view_path(%w(foo bar))
-    assert_paths "foo", "bar", "baz", FIXTURE_LOAD_PATH
-    assert_paths TestController, *class_view_paths
-  end
-
-  def test_view_paths
-    get :hello_world
-    assert_response :success
-    assert_equal "Hello world!", @response.body
-  end
-
-  def test_view_paths_override
-    TestController.prepend_view_path "#{FIXTURE_LOAD_PATH}/override"
-    get :hello_world
-    assert_response :success
-    assert_equal "Hello overridden world!", @response.body
-  end
-
-  def test_view_paths_override_for_layouts_in_controllers_with_a_module
-    @controller = Test::SubController.new
-    Test::SubController.view_paths = [ "#{FIXTURE_LOAD_PATH}/override", FIXTURE_LOAD_PATH, "#{FIXTURE_LOAD_PATH}/override2" ]
-    get :hello_world
-    assert_response :success
-    assert_equal "layout: Hello overridden world!", @response.body
-  end
-
-  def test_view_paths_override_at_request_time
-    get :hello_world_at_request_time
-    assert_response :success
-    assert_equal "Hello overridden world!", @response.body
-  end
-
-  def test_decorate_view_paths_with_custom_resolver
-    decorator_class = Class.new(ActionView::PathResolver) do
-      def initialize(path_set)
-        @path_set = path_set
-      end
-
-      def find_all(*args)
-        @path_set.find_all(*args).collect do |template|
-          ::ActionView::Template.new(
-            "Decorated body",
-            template.identifier,
-            template.handler,
-            {
-              :virtual_path => template.virtual_path,
-              :format => template.formats
-            }
-          )
-        end
-      end
-    end
-
-    decorator = decorator_class.new(TestController.view_paths)
-    TestController.view_paths = ActionView::PathSet.new.push(decorator)
-
-    get :hello_world
-    assert_response :success
-    assert_equal "Decorated body", @response.body
-  end
-
-  def test_inheritance
-    original_load_paths = ActionController::Base.view_paths
-
-    self.class.class_eval %{
-      class A < ActionController::Base; end
-      class B < A; end
-      class C < ActionController::Base; end
-    }
-
-    A.view_paths = ['a/path']
-
-    assert_paths A, "a/path"
-    assert_paths A, *B.view_paths
-    assert_paths C, *original_load_paths
-
-    C.view_paths = []
-    assert_nothing_raised { C.append_view_path 'c/path' }
-    assert_paths C, "c/path"
-  end
-
-  def test_lookup_context_accessor
-    assert_equal ["test"], TestController.new.lookup_context.prefixes
-  end
-end
diff --git a/actionpack/test/dispatch/debug_exceptions_test.rb b/actionpack/test/dispatch/debug_exceptions_test.rb
index ff0baccd76..3045a07ad6 100644
--- a/actionpack/test/dispatch/debug_exceptions_test.rb
+++ b/actionpack/test/dispatch/debug_exceptions_test.rb
@@ -128,6 +128,47 @@ class DebugExceptionsTest < ActionDispatch::IntegrationTest
     assert_match(/ActionController::ParameterMissing/, body)
   end
 
+  test "rescue with text error for xhr request" do
+    @app = DevelopmentApp
+    xhr_request_env = {'action_dispatch.show_exceptions' => true, 'HTTP_X_REQUESTED_WITH' => 'XMLHttpRequest'}
+
+    get "/", {}, xhr_request_env
+    assert_response 500
+    assert_no_match(/<body>/, body)
+    assert_equal response.content_type, "text/plain"
+    assert_match(/puke/, body)
+
+    get "/not_found", {}, xhr_request_env
+    assert_response 404
+    assert_no_match(/<body>/, body)
+    assert_equal response.content_type, "text/plain"
+    assert_match(/#{AbstractController::ActionNotFound.name}/, body)
+
+    get "/method_not_allowed", {}, xhr_request_env
+    assert_response 405
+    assert_no_match(/<body>/, body)
+    assert_equal response.content_type, "text/plain"
+    assert_match(/ActionController::MethodNotAllowed/, body)
+
+    get "/unknown_http_method", {}, xhr_request_env
+    assert_response 405
+    assert_no_match(/<body>/, body)
+    assert_equal response.content_type, "text/plain"
+    assert_match(/ActionController::UnknownHttpMethod/, body)
+
+    get "/bad_request", {}, xhr_request_env
+    assert_response 400
+    assert_no_match(/<body>/, body)
+    assert_equal response.content_type, "text/plain"
+    assert_match(/ActionController::BadRequest/, body)
+
+    get "/parameter_missing", {}, xhr_request_env
+    assert_response 400
+    assert_no_match(/<body>/, body)
+    assert_equal response.content_type, "text/plain"
+    assert_match(/ActionController::ParameterMissing/, body)
+  end
+
   test "does not show filtered parameters" do
     @app = DevelopmentApp
 
diff --git a/actionpack/test/fixtures/customers/_customer.html.erb b/actionpack/test/fixtures/customers/_customer.html.erb
deleted file mode 100644
index 483571e22a..0000000000
--- a/actionpack/test/fixtures/customers/_customer.html.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= greeting %>: <%= customer.name %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/fun/games/_form.erb b/actionpack/test/fixtures/fun/games/_form.erb
deleted file mode 100644
index 01107f1cb2..0000000000
--- a/actionpack/test/fixtures/fun/games/_form.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= form.label :title %>
diff --git a/actionpack/test/fixtures/fun/games/hello_world.erb b/actionpack/test/fixtures/fun/games/hello_world.erb
deleted file mode 100644
index 1ebfbe2539..0000000000
--- a/actionpack/test/fixtures/fun/games/hello_world.erb
+++ /dev/null
@@ -1 +0,0 @@
-Living in a nested world
\ No newline at end of file
diff --git a/actionpack/test/fixtures/good_customers/_good_customer.html.erb b/actionpack/test/fixtures/good_customers/_good_customer.html.erb
deleted file mode 100644
index a2d97ebc6d..0000000000
--- a/actionpack/test/fixtures/good_customers/_good_customer.html.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= greeting %> good customer: <%= good_customer.name %><%= good_customer_counter %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/hello.html b/actionpack/test/fixtures/hello.html
deleted file mode 100644
index 6769dd60bd..0000000000
--- a/actionpack/test/fixtures/hello.html
+++ /dev/null
@@ -1 +0,0 @@
-Hello world!
\ No newline at end of file
diff --git a/actionpack/test/fixtures/helpers_missing/invalid_require_helper.rb b/actionpack/test/fixtures/helpers_missing/invalid_require_helper.rb
deleted file mode 100644
index d8801e54d5..0000000000
--- a/actionpack/test/fixtures/helpers_missing/invalid_require_helper.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-require 'very_invalid_file_name'
-
-module InvalidRequireHelper
-end
-
diff --git a/actionpack/test/fixtures/layout_tests/alt/layouts/alt.erb b/actionpack/test/fixtures/layout_tests/alt/layouts/alt.erb
deleted file mode 100644
index e69de29bb2..0000000000
--- a/actionpack/test/fixtures/layout_tests/alt/layouts/alt.erb
+++ /dev/null
diff --git a/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.erb b/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.erb
deleted file mode 100644
index 121bc079a1..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/controller_name_space/nested.erb
+++ /dev/null
@@ -1 +0,0 @@
-controller_name_space/nested.erb <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/item.erb b/actionpack/test/fixtures/layout_tests/layouts/item.erb
deleted file mode 100644
index 60f04d77d5..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/item.erb
+++ /dev/null
@@ -1 +0,0 @@
-item.erb <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/layout_test.erb b/actionpack/test/fixtures/layout_tests/layouts/layout_test.erb
deleted file mode 100644
index b74ac0840d..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/layout_test.erb
+++ /dev/null
@@ -1 +0,0 @@
-layout_test.erb <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/multiple_extensions.html.erb b/actionpack/test/fixtures/layout_tests/layouts/multiple_extensions.html.erb
deleted file mode 100644
index 3b65e54f9c..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/multiple_extensions.html.erb
+++ /dev/null
@@ -1 +0,0 @@
-multiple_extensions.html.erb <%= yield %>
diff --git a/actionpack/test/fixtures/layout_tests/layouts/symlinked b/actionpack/test/fixtures/layout_tests/layouts/symlinked
deleted file mode 120000
index 0ddc1154ab..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/symlinked
+++ /dev/null
@@ -1 +0,0 @@
-../../symlink_parent
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/layouts/third_party_template_library.mab b/actionpack/test/fixtures/layout_tests/layouts/third_party_template_library.mab
deleted file mode 100644
index fcee620d82..0000000000
--- a/actionpack/test/fixtures/layout_tests/layouts/third_party_template_library.mab
+++ /dev/null
@@ -1 +0,0 @@
-layouts/third_party_template_library.mab
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/views/goodbye.erb b/actionpack/test/fixtures/layout_tests/views/goodbye.erb
deleted file mode 100644
index 4ee911188e..0000000000
--- a/actionpack/test/fixtures/layout_tests/views/goodbye.erb
+++ /dev/null
@@ -1 +0,0 @@
-hello.erb
\ No newline at end of file
diff --git a/actionpack/test/fixtures/layout_tests/views/hello.erb b/actionpack/test/fixtures/layout_tests/views/hello.erb
deleted file mode 100644
index 4ee911188e..0000000000
--- a/actionpack/test/fixtures/layout_tests/views/hello.erb
+++ /dev/null
@@ -1 +0,0 @@
-hello.erb
\ No newline at end of file
diff --git a/actionpack/test/fixtures/override/test/hello_world.erb b/actionpack/test/fixtures/override/test/hello_world.erb
deleted file mode 100644
index 3e308d3d86..0000000000
--- a/actionpack/test/fixtures/override/test/hello_world.erb
+++ /dev/null
@@ -1 +0,0 @@
-Hello overridden world!
\ No newline at end of file
diff --git a/actionpack/test/fixtures/override2/layouts/test/sub.erb b/actionpack/test/fixtures/override2/layouts/test/sub.erb
deleted file mode 100644
index 3863d5a8ef..0000000000
--- a/actionpack/test/fixtures/override2/layouts/test/sub.erb
+++ /dev/null
@@ -1 +0,0 @@
-layout: <%= yield %>
\ No newline at end of file
diff --git a/actionpack/test/fixtures/quiz/questions/_question.html.erb b/actionpack/test/fixtures/quiz/questions/_question.html.erb
deleted file mode 100644
index fb4dcfee64..0000000000
--- a/actionpack/test/fixtures/quiz/questions/_question.html.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= question.name %>
\ No newline at end of file
diff --git a/actionpack/test/lib/controller/fake_models.rb b/actionpack/test/lib/controller/fake_models.rb
index 82f38b5309..38abb16d08 100644
--- a/actionpack/test/lib/controller/fake_models.rb
+++ b/actionpack/test/lib/controller/fake_models.rb
@@ -28,12 +28,6 @@ class Customer < Struct.new(:name, :id)
   end
 end
 
-class BadCustomer < Customer
-end
-
-class GoodCustomer < Customer
-end
-
 class ValidatedCustomer < Customer
   def errors
     if name =~ /Sikachu/i