Merge Mail with latest Rails and move mail gem to Gemfile.

16 files changed, 244 insertions, 187 deletions

diff --git a/actionpack/lib/action_dispatch/http/request.rb b/actionpack/lib/action_dispatch/http/request.rb
index 7d1f5a4504..6e8a5dcb8a 100755
--- a/actionpack/lib/action_dispatch/http/request.rb
+++ b/actionpack/lib/action_dispatch/http/request.rb
@@ -18,7 +18,7 @@ module ActionDispatch
 
         HTTP_ACCEPT HTTP_ACCEPT_CHARSET HTTP_ACCEPT_ENCODING
         HTTP_ACCEPT_LANGUAGE HTTP_CACHE_CONTROL HTTP_FROM
-        HTTP_NEGOTIATE HTTP_PRAGMA HTTP_REFERER HTTP_USER_AGENT ].each do |env|
+        HTTP_NEGOTIATE HTTP_PRAGMA ].each do |env|
       define_method(env.sub(/^HTTP_/n, '').downcase) do
         @env[env]
       end
@@ -465,6 +465,15 @@ EOM
       session['flash'] || {}
     end
 
+    # Returns the authorization header regardless of whether it was specified directly or through one of the
+    # proxy alternatives.
+    def authorization
+      @env['HTTP_AUTHORIZATION']   ||
+      @env['X-HTTP_AUTHORIZATION'] ||
+      @env['X_HTTP_AUTHORIZATION'] ||
+      @env['REDIRECT_X_HTTP_AUTHORIZATION']
+    end
+
     # Receives an array of mimes and return the first user sent mime that
     # matches the order array.
     #
diff --git a/actionpack/lib/action_dispatch/http/response.rb b/actionpack/lib/action_dispatch/http/response.rb
index 378fd5e61d..8524bbd993 100644
--- a/actionpack/lib/action_dispatch/http/response.rb
+++ b/actionpack/lib/action_dispatch/http/response.rb
@@ -60,7 +60,7 @@ module ActionDispatch # :nodoc:
     end
 
     def status=(status)
-      @status = status.to_i
+      @status = Rack::Utils.status_code(status)
     end
 
     # The response code of the request
@@ -74,7 +74,7 @@ module ActionDispatch # :nodoc:
     end
 
     def message
-      StatusCodes::STATUS_CODES[@status]
+      Rack::Utils::HTTP_STATUS_CODES[@status]
     end
     alias_method :status_message, :message
 
@@ -145,18 +145,6 @@ module ActionDispatch # :nodoc:
 
     cattr_accessor(:default_charset) { "utf-8" }
 
-    def assign_default_content_type_and_charset!
-      return if headers[CONTENT_TYPE].present?
-
-      @content_type ||= Mime::HTML
-      @charset      ||= self.class.default_charset
-
-      type = @content_type.to_s.dup
-      type << "; charset=#{@charset}" unless @sending_file
-
-      headers[CONTENT_TYPE] = type
-    end
-
     def to_a
       assign_default_content_type_and_charset!
       handle_conditional_get!
@@ -259,6 +247,18 @@ module ActionDispatch # :nodoc:
         !@blank && @body.respond_to?(:all?) && @body.all? { |part| part.is_a?(String) }
       end
 
+      def assign_default_content_type_and_charset!
+        return if headers[CONTENT_TYPE].present?
+
+        @content_type ||= Mime::HTML
+        @charset      ||= self.class.default_charset
+
+        type = @content_type.to_s.dup
+        type << "; charset=#{@charset}" unless @sending_file
+
+        headers[CONTENT_TYPE] = type
+      end
+
       DEFAULT_CACHE_CONTROL = "max-age=0, private, must-revalidate"
 
       def set_conditional_cache_control!
@@ -280,7 +280,6 @@ module ActionDispatch # :nodoc:
 
           headers["Cache-Control"] = options.join(", ")
         end
-
       end
   end
 end
diff --git a/actionpack/lib/action_dispatch/http/status_codes.rb b/actionpack/lib/action_dispatch/http/status_codes.rb
deleted file mode 100644
index ea1475e827..0000000000
--- a/actionpack/lib/action_dispatch/http/status_codes.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-require 'active_support/inflector'
-
-module ActionDispatch
-  module StatusCodes #:nodoc:
-    STATUS_CODES = Rack::Utils::HTTP_STATUS_CODES.merge({
-      102 => "Processing",
-      207 => "Multi-Status",
-      226 => "IM Used",
-      422 => "Unprocessable Entity",
-      423 => "Locked",
-      424 => "Failed Dependency",
-      426 => "Upgrade Required",
-      507 => "Insufficient Storage",
-      510 => "Not Extended"
-    }).freeze
-
-    # Provides a symbol-to-fixnum lookup for converting a symbol (like
-    # :created or :not_implemented) into its corresponding HTTP status
-    # code (like 200 or 501).
-    SYMBOL_TO_STATUS_CODE = STATUS_CODES.inject({}) { |hash, (code, message)|
-      hash[ActiveSupport::Inflector.underscore(message.gsub(/ /, "")).to_sym] = code
-      hash
-    }.freeze
-  end
-end
diff --git a/actionpack/lib/action_dispatch/http/utils.rb b/actionpack/lib/action_dispatch/http/utils.rb
deleted file mode 100644
index e04a39935e..0000000000
--- a/actionpack/lib/action_dispatch/http/utils.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-module ActionDispatch
-  module Utils
-    # TODO: Pull this into rack core
-    # http://github.com/halorgium/rack/commit/feaf071c1de743fbd10bc316830180a9af607278
-    def parse_config(config)
-      if config =~ /\.ru$/
-        cfgfile = ::File.read(config)
-        if cfgfile[/^#\\(.*)/]
-          opts.parse! $1.split(/\s+/)
-        end
-        inner_app = eval "Rack::Builder.new {( " + cfgfile + "\n )}.to_app",
-                         nil, config
-      else
-        require config
-        inner_app = Object.const_get(::File.basename(config, '.rb').capitalize)
-      end
-    end
-    module_function :parse_config
-  end
-end
diff --git a/actionpack/lib/action_dispatch/middleware/cascade.rb b/actionpack/lib/action_dispatch/middleware/cascade.rb
new file mode 100644
index 0000000000..9f5c9891f0
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/cascade.rb
@@ -0,0 +1,29 @@
+module ActionDispatch
+  class Cascade
+    def self.new(*apps)
+      apps = apps.flatten
+
+      case apps.length
+      when 0
+        raise ArgumentError, "app is required"
+      when 1
+        apps.first
+      else
+        super(apps)
+      end
+    end
+
+    def initialize(apps)
+      @apps = apps
+    end
+
+    def call(env)
+      result = nil
+      @apps.each do |app|
+        result = app.call(env)
+        break unless result[1]["X-Cascade"] == "pass"
+      end
+      result
+    end
+  end
+end
diff --git a/actionpack/lib/action_dispatch/middleware/params_parser.rb b/actionpack/lib/action_dispatch/middleware/params_parser.rb
index 32ccb5c931..534390d4aa 100644
--- a/actionpack/lib/action_dispatch/middleware/params_parser.rb
+++ b/actionpack/lib/action_dispatch/middleware/params_parser.rb
@@ -1,4 +1,5 @@
 require 'active_support/json'
+require 'action_dispatch/http/request'
 
 module ActionDispatch
   class ParamsParser
@@ -31,41 +32,39 @@ module ActionDispatch
         return false unless strategy
 
         case strategy
-          when Proc
-            strategy.call(request.raw_post)
-          when :xml_simple, :xml_node
-            request.body.size == 0 ? {} : Hash.from_xml(request.body).with_indifferent_access
-          when :yaml
-            YAML.load(request.body)
-          when :json
-            if request.body.size == 0
-              {}
-            else
-              data = ActiveSupport::JSON.decode(request.body)
-              data = {:_json => data} unless data.is_a?(Hash)
-              data.with_indifferent_access
-            end
+        when Proc
+          strategy.call(request.raw_post)
+        when :xml_simple, :xml_node
+          request.body.size == 0 ? {} : Hash.from_xml(request.body).with_indifferent_access
+        when :yaml
+          YAML.load(request.body)
+        when :json
+          if request.body.size == 0
+            {}
           else
-            false
+            data = ActiveSupport::JSON.decode(request.body)
+            data = {:_json => data} unless data.is_a?(Hash)
+            data.with_indifferent_access
+          end
+        else
+          false
         end
       rescue Exception => e # YAML, XML or Ruby code block errors
         logger.debug "Error occurred while parsing request parameters.\nContents:\n\n#{request.raw_post}"
 
         raise
-          { "body" => request.raw_post,
-            "content_type" => request.content_type,
+          { "body"           => request.raw_post,
+            "content_type"   => request.content_type,
             "content_length" => request.content_length,
-            "exception" => "#{e.message} (#{e.class})",
-            "backtrace" => e.backtrace }
+            "exception"      => "#{e.message} (#{e.class})",
+            "backtrace"      => e.backtrace }
       end
 
       def content_type_from_legacy_post_data_format_header(env)
         if x_post_format = env['HTTP_X_POST_DATA_FORMAT']
           case x_post_format.to_s.downcase
-            when 'yaml'
-              return Mime::YAML
-            when 'xml'
-              return Mime::XML
+          when 'yaml' then return Mime::YAML
+          when 'xml'  then return Mime::XML
           end
         end
 
@@ -76,4 +75,4 @@ module ActionDispatch
         defined?(Rails.logger) ? Rails.logger : Logger.new($stderr)
       end
   end
-end
+end
\ No newline at end of file
diff --git a/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb b/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
index c5c06f74a2..7d4f0998ce 100644
--- a/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
@@ -1,4 +1,5 @@
 require 'rack/utils'
+require 'rack/request'
 
 module ActionDispatch
   module Session
diff --git a/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb b/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
index bd552b458a..f27f22c7e7 100644
--- a/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
@@ -1,4 +1,5 @@
-require "active_support/core_ext/hash/keys"
+require 'active_support/core_ext/hash/keys'
+require 'rack/request'
 
 module ActionDispatch
   module Session
@@ -49,7 +50,7 @@ module ActionDispatch
         :expire_after => nil,
         :httponly     => true
       }.freeze
-      
+
       class OptionsHash < Hash
         def initialize(by, env, default_options)
           @session_data = env[CookieStore::ENV_SESSION_KEY]
@@ -60,7 +61,7 @@ module ActionDispatch
           key == :id ? @session_data[:session_id] : super(key)
         end
       end
-      
+
       ENV_SESSION_KEY = "rack.session".freeze
       ENV_SESSION_OPTIONS_KEY = "rack.session.options".freeze
       HTTP_SET_COOKIE = "Set-Cookie".freeze
@@ -102,7 +103,7 @@ module ActionDispatch
       def call(env)
         env[ENV_SESSION_KEY] = AbstractStore::SessionHash.new(self, env)
         env[ENV_SESSION_OPTIONS_KEY] = OptionsHash.new(self, env, @default_options)
-        
+
         status, headers, body = @app.call(env)
 
         session_data = env[ENV_SESSION_KEY]
diff --git a/actionpack/lib/action_dispatch/middleware/show_exceptions.rb b/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
index bd87764f5b..4ebc8a2ab9 100644
--- a/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
+++ b/actionpack/lib/action_dispatch/middleware/show_exceptions.rb
@@ -1,4 +1,5 @@
-require "active_support/core_ext/exception"
+require 'active_support/core_ext/exception'
+require 'action_dispatch/http/request'
 
 module ActionDispatch
   class ShowExceptions
@@ -101,7 +102,7 @@ module ActionDispatch
       end
 
       def status_code(exception)
-        ActionDispatch::StatusCodes::SYMBOL_TO_STATUS_CODE[@@rescue_responses[exception.class.name]]
+        Rack::Utils.status_code(@@rescue_responses[exception.class.name])
       end
 
       def render(status, body)
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index d480af876d..e655d6a708 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -19,9 +19,9 @@ module ActionDispatch
 
           @constraints.each { |constraint|
             if constraint.respond_to?(:matches?) && !constraint.matches?(req)
-              return [417, {}, []]
+              return [ 404, {'X-Cascade' => 'pass'}, [] ]
             elsif constraint.respond_to?(:call) && !constraint.call(req)
-              return [417, {}, []]
+              return [ 404, {'X-Cascade' => 'pass'}, [] ]
             end
           }
 
@@ -29,90 +29,138 @@ module ActionDispatch
         end
       end
 
-      module Base
-        def initialize(set)
-          @set = set
+      class Mapping
+        def initialize(set, scope, args)
+          @set, @scope    = set, scope
+          @path, @options = extract_path_and_options(args)
         end
 
-        def root(options = {})
-          match '/', options.merge(:as => :root)
+        def to_route
+          [ app, conditions, requirements, defaults, @options[:as] ]
         end
 
-        def match(*args)
-          options = args.extract_options!
+        private
+          def extract_path_and_options(args)
+            options = args.extract_options!
 
-          path = args.first
+            if args.empty?
+              path, to = options.find { |name, value| name.is_a?(String) }
+              options.merge!(:to => to).delete(path) if path
+            else
+              path = args.first
+            end
 
-          conditions, defaults = {}, {}
+            [ normalize_path(path), options ]
+          end
 
-          path = nil if path == ""
-          path = "#{@scope[:path]}#{path}" if @scope[:path]
-          path = Rack::Mount::Utils.normalize_path(path) if path
+          def normalize_path(path)
+            path = nil if path == ""
+            path = "#{@scope[:path]}#{path}" if @scope[:path]
+            path = Rack::Mount::Utils.normalize_path(path) if path
 
-          raise ArgumentError, "path is required" unless path
+            raise ArgumentError, "path is required" unless path
 
-          constraints = options[:constraints] || {}
-          unless constraints.is_a?(Hash)
-            block, constraints = constraints, {}
+            path
           end
-          blocks = ((@scope[:blocks] || []) + [block]).compact
-          constraints = (@scope[:constraints] || {}).merge(constraints)
-          options.each { |k, v| constraints[k] = v if v.is_a?(Regexp) }
 
-          conditions[:path_info] = path
-          requirements = constraints.dup
 
-          path_regexp = Rack::Mount::Strexp.compile(path, constraints, SEPARATORS)
-          segment_keys = Rack::Mount::RegexpWithNamedGroups.new(path_regexp).names
-          constraints.reject! { |k, v| segment_keys.include?(k.to_s) }
-          conditions.merge!(constraints)
+          def app
+            Constraints.new(
+              to.respond_to?(:call) ? to : Routing::RouteSet::Dispatcher.new(:defaults => defaults),
+              blocks
+            )
+          end
 
-          requirements[:controller] ||= @set.controller_constraints
+          def conditions
+            { :path_info => @path }.merge(constraints).merge(request_method_condition)
+          end
 
-          if via = options[:via]
-            via = Array(via).map { |m| m.to_s.upcase }
-            conditions[:request_method] = Regexp.union(*via)
+          def requirements
+            @requirements ||= returning(@options[:constraints] || {}) do |requirements|
+              requirements.reverse_merge!(@scope[:constraints]) if @scope[:constraints]
+              @options.each { |k, v| requirements[k] = v if v.is_a?(Regexp) }
+              requirements[:controller] ||= @set.controller_constraints
+            end
           end
 
-          defaults[:controller] ||= @scope[:controller].to_s if @scope[:controller]
+          def defaults
+            @defaults ||= if to.respond_to?(:call)
+              { }
+            else
+              defaults = case to
+              when String
+                controller, action = to.split('#')
+                { :controller => controller, :action => action }
+              when Symbol
+                { :action => to.to_s }.merge(default_controller ? { :controller => default_controller } : {})
+              else
+                default_controller ? { :controller => default_controller } : {}
+              end
 
-          app = initialize_app_endpoint(options, defaults)
-          validate_defaults!(app, defaults, segment_keys)
-          app = Constraints.new(app, blocks)
+              if defaults[:controller].blank? && segment_keys.exclude?("controller")
+                raise ArgumentError, "missing :controller"
+              end
 
-          @set.add_route(app, conditions, requirements, defaults, options[:as])
+              if defaults[:action].blank? && segment_keys.exclude?("action")
+                raise ArgumentError, "missing :action"
+              end
 
-          self
-        end
+              defaults
+            end
+          end
 
-        private
-          def initialize_app_endpoint(options, defaults)
-            app = nil
-
-            if options[:to].respond_to?(:call)
-              app = options[:to]
-              defaults.delete(:controller)
-              defaults.delete(:action)
-            elsif options[:to].is_a?(String)
-              defaults[:controller], defaults[:action] = options[:to].split('#')
-            elsif options[:to].is_a?(Symbol)
-              defaults[:action] = options[:to].to_s
+
+          def blocks
+            if @options[:constraints].present? && !@options[:constraints].is_a?(Hash)
+              block = @options[:constraints]
+            else
+              block = nil
             end
 
-            app || Routing::RouteSet::Dispatcher.new(:defaults => defaults)
+            ((@scope[:blocks] || []) + [ block ]).compact
           end
 
-          def validate_defaults!(app, defaults, segment_keys)
-            return unless app.is_a?(Routing::RouteSet::Dispatcher)
+          def constraints
+            @constraints ||= requirements.reject { |k, v| segment_keys.include?(k.to_s) || k == :controller }
+          end
 
-            unless defaults.include?(:controller) || segment_keys.include?("controller")
-              raise ArgumentError, "missing :controller"
+          def request_method_condition
+            if via = @options[:via]
+              via = Array(via).map { |m| m.to_s.upcase }
+              { :request_method => Regexp.union(*via) }
+            else
+              { }
             end
+          end
 
-            unless defaults.include?(:action) || segment_keys.include?("action")
-              raise ArgumentError, "missing :action"
-            end
+          def segment_keys
+            @segment_keys ||= Rack::Mount::RegexpWithNamedGroups.new(
+                Rack::Mount::Strexp.compile(@path, requirements, SEPARATORS)
+              ).names
+          end
+
+          def to
+            @options[:to]
           end
+
+          def default_controller
+            @scope[:controller].to_s if @scope[:controller]
+          end
+      end
+
+      module Base
+        def initialize(set)
+          @set = set
+        end
+
+        def root(options = {})
+          match '/', options.reverse_merge(:as => :root)
+        end
+
+        def match(*args)
+          @set.add_route(*Mapping.new(@set, @scope, args).to_route)
+          self
+        end
       end
 
       module HttpHelpers
@@ -132,13 +180,20 @@ module ActionDispatch
           map_method(:delete, *args, &block)
         end
 
-        def redirect(path, options = {})
-          status = options[:status] || 301
-          lambda { |env|
-            req = Rack::Request.new(env)
-            url = req.scheme + '://' + req.host + path
-            [status, {'Location' => url, 'Content-Type' => 'text/html'}, ['Moved Permanently']]
-          }
+        def redirect(*args, &block)
+          options = args.last.is_a?(Hash) ? args.pop : {}
+
+          path      = args.shift || block
+          path_proc = path.is_a?(Proc) ? path : proc { |params| path % params }
+          status    = options[:status] || 301
+
+          lambda do |env|
+            req    = Rack::Request.new(env)
+            params = path_proc.call(env["action_dispatch.request.path_parameters"])
+            url    = req.scheme + '://' + req.host + params
+
+            [ status, {'Location' => url, 'Content-Type' => 'text/html'}, ['Moved Permanently'] ]
+          end
         end
 
         private
@@ -201,11 +256,11 @@ module ActionDispatch
 
           self
         ensure
-          @scope[:path] = path if path_set
+          @scope[:path]        = path        if path_set
           @scope[:name_prefix] = name_prefix if name_prefix_set
-          @scope[:controller] = controller if controller_set
-          @scope[:options] = options
-          @scope[:blocks] = blocks
+          @scope[:controller]  = controller  if controller_set
+          @scope[:options]     = options
+          @scope[:blocks]      = blocks
           @scope[:constraints] = constraints
         end
 
@@ -301,12 +356,12 @@ module ActionDispatch
             with_scope_level(:resource, resource) do
               yield if block_given?
 
-              get "(.:format)", :to => :show, :as => resource.member_name
-              post "(.:format)", :to => :create
-              put "(.:format)", :to => :update
-              delete "(.:format)", :to => :destroy
-              get "/new(.:format)", :to => :new, :as => "new_#{resource.singular}"
-              get "/edit(.:format)", :to => :edit, :as => "edit_#{resource.singular}"
+              get    "(.:format)",      :to => :show, :as => resource.member_name
+              post   "(.:format)",      :to => :create
+              put    "(.:format)",      :to => :update
+              delete "(.:format)",      :to => :destroy
+              get    "/new(.:format)",  :to => :new,  :as => "new_#{resource.singular}"
+              get    "/edit(.:format)", :to => :edit, :as => "edit_#{resource.singular}"
             end
           end
 
@@ -336,8 +391,9 @@ module ActionDispatch
               yield if block_given?
 
               with_scope_level(:collection) do
-                get "(.:format)", :to => :index, :as => resource.collection_name
+                get  "(.:format)", :to => :index, :as => resource.collection_name
                 post "(.:format)", :to => :create
+
                 with_exclusive_name_prefix :new do
                   get "/new(.:format)", :to => :new, :as => resource.singular
                 end
@@ -345,9 +401,10 @@ module ActionDispatch
 
               with_scope_level(:member) do
                 scope("/:id") do
-                  get "(.:format)", :to => :show, :as => resource.member_name
-                  put "(.:format)", :to => :update
+                  get    "(.:format)", :to => :show, :as => resource.member_name
+                  put    "(.:format)", :to => :update
                   delete "(.:format)", :to => :destroy
+
                   with_exclusive_name_prefix :edit do
                     get "/edit(.:format)", :to => :edit, :as => resource.singular
                   end
diff --git a/actionpack/lib/action_dispatch/routing/route_set.rb b/actionpack/lib/action_dispatch/routing/route_set.rb
index bf2443c1be..bd397432ce 100644
--- a/actionpack/lib/action_dispatch/routing/route_set.rb
+++ b/actionpack/lib/action_dispatch/routing/route_set.rb
@@ -5,7 +5,7 @@ module ActionDispatch
   module Routing
     class RouteSet #:nodoc:
       NotFound = lambda { |env|
-        raise ActionController::RoutingError, "No route matches #{env['PATH_INFO'].inspect} with #{env.inspect}"
+        raise ActionController::RoutingError, "No route matches #{env['PATH_INFO'].inspect}"
       }
 
       PARAMETERS_KEY = 'action_dispatch.request.path_parameters'
@@ -21,7 +21,7 @@ module ActionDispatch
           prepare_params!(params)
 
           unless controller = controller(params)
-            return [417, {}, []]
+            return [404, {'X-Cascade' => 'pass'}, []]
           end
 
           controller.action(params[:action]).call(env)
@@ -273,7 +273,7 @@ module ActionDispatch
         # TODO: Move this into Railties
         if defined?(Rails.application)
           # Find namespaces in controllers/ directory
-          Rails.application.configuration.controller_paths.each do |load_path|
+          Rails.application.config.controller_paths.each do |load_path|
             load_path = File.expand_path(load_path)
             Dir["#{load_path}/**/*_controller.rb"].collect do |path|
               namespaces << File.dirname(path).sub(/#{load_path}\/?/, '')
@@ -426,7 +426,7 @@ module ActionDispatch
           end
         end
 
-        raise ActionController::RoutingError, "No route matches #{path.inspect} with #{environment.inspect}"
+        raise ActionController::RoutingError, "No route matches #{path.inspect}"
       end
     end
   end
diff --git a/actionpack/lib/action_dispatch/testing/assertions/dom.rb b/actionpack/lib/action_dispatch/testing/assertions/dom.rb
index 9a917f704a..9c215de743 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/dom.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/dom.rb
@@ -1,3 +1,5 @@
+require 'action_controller/vendor/html-scanner'
+
 module ActionDispatch
   module Assertions
     module DomAssertions
@@ -15,7 +17,7 @@ module ActionDispatch
 
         assert_block(full_message) { expected_dom == actual_dom }
       end
-      
+
       # The negated form of +assert_dom_equivalent+.
       #
       # ==== Examples
diff --git a/actionpack/lib/action_dispatch/testing/assertions/response.rb b/actionpack/lib/action_dispatch/testing/assertions/response.rb
index 501a7c4dfb..5686bbdbde 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/response.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/response.rb
@@ -28,7 +28,7 @@ module ActionDispatch
           assert_block("") { true } # to count the assertion
         elsif type.is_a?(Fixnum) && @response.response_code == type
           assert_block("") { true } # to count the assertion
-        elsif type.is_a?(Symbol) && @response.response_code == ActionDispatch::StatusCodes::SYMBOL_TO_STATUS_CODE[type]
+        elsif type.is_a?(Symbol) && @response.response_code == Rack::Utils::SYMBOL_TO_STATUS_CODE[type]
           assert_block("") { true } # to count the assertion
         else
           assert_block(build_message(message, "Expected response to be a <?>, but was <?>", type, @response.response_code)) { false }
diff --git a/actionpack/lib/action_dispatch/testing/assertions/selector.rb b/actionpack/lib/action_dispatch/testing/assertions/selector.rb
index d22adfa749..c2dc591ff7 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/selector.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/selector.rb
@@ -1,3 +1,5 @@
+require 'action_controller/vendor/html-scanner'
+
 #--
 # Copyright (c) 2006 Assaf Arkin (http://labnotes.org)
 # Under MIT and/or CC By license.
@@ -16,7 +18,7 @@ module ActionDispatch
     #
     # Use +css_select+ to select elements without making an assertions, either
     # from the response HTML or elements selected by the enclosing assertion.
-    # 
+    #
     # In addition to HTML responses, you can make the following assertions:
     # * +assert_select_rjs+ - Assertions on HTML content of RJS update and insertion operations.
     # * +assert_select_encoded+ - Assertions on HTML encoded inside XML, for example for dealing with feed item descriptions.
@@ -53,8 +55,8 @@ module ActionDispatch
       #   end
       #
       #   # Selects all list items in unordered lists
-      #   items = css_select("ul>li") 
-      #      
+      #   items = css_select("ul>li")
+      #
       #   # Selects all form tags and then all inputs inside the form
       #   forms = css_select("form")
       #   forms.each do |form|
@@ -212,7 +214,7 @@ module ActionDispatch
           # Otherwise just operate on the response document.
           root = response_from_page_or_rjs
         end
-        
+
         # First or second argument is the selector: string and we pass
         # all remaining arguments. Array and we pass the argument. Also
         # accepts selector itself.
@@ -225,7 +227,7 @@ module ActionDispatch
             selector = arg
           else raise ArgumentError, "Expecting a selector as the first argument"
         end
-        
+
         # Next argument is used for equality tests.
         equals = {}
         case arg = args.shift
@@ -315,10 +317,10 @@ module ActionDispatch
         # Returns all matches elements.
         matches
       end
-      
+
       def count_description(min, max) #:nodoc:
         pluralize = lambda {|word, quantity| word << (quantity == 1 ? '' : 's')}
-        
+
         if min && max && (max != min)
           "between #{min} and #{max} elements"
         elsif min && !(min == 1 && max == 1)
@@ -327,7 +329,7 @@ module ActionDispatch
           "at most #{max} #{pluralize['element', max]}"
         end
       end
-      
+
       # :call-seq:
       #   assert_select_rjs(id?) { |elements| ... }
       #   assert_select_rjs(statement, id?) { |elements| ... }
@@ -344,7 +346,7 @@ module ActionDispatch
       # that update or insert an element with that identifier.
       #
       # Use the first argument to narrow down assertions to only statements
-      # of that type. Possible values are <tt>:replace</tt>, <tt>:replace_html</tt>, 
+      # of that type. Possible values are <tt>:replace</tt>, <tt>:replace_html</tt>,
       # <tt>:show</tt>, <tt>:hide</tt>, <tt>:toggle</tt>, <tt>:remove</tta>,
       # <tt>:insert_html</tt> and <tt>:redirect</tt>.
       #
@@ -494,7 +496,7 @@ module ActionDispatch
       #       end
       #     end
       #   end
-      #   
+      #
       #
       #   # Selects all paragraph tags from within the description of an RSS feed
       #   assert_select_feed :rss, 2.0 do
diff --git a/actionpack/lib/action_dispatch/testing/assertions/tag.rb b/actionpack/lib/action_dispatch/testing/assertions/tag.rb
index b74dcb1fe4..5c735e61b2 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/tag.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/tag.rb
@@ -1,3 +1,5 @@
+require 'action_controller/vendor/html-scanner'
+
 module ActionDispatch
   module Assertions
     # Pair of assertions to testing elements in the HTML output of the response.
diff --git a/actionpack/lib/action_dispatch/testing/integration.rb b/actionpack/lib/action_dispatch/testing/integration.rb
index 5c127dfe37..2a5f5dcd5c 100644
--- a/actionpack/lib/action_dispatch/testing/integration.rb
+++ b/actionpack/lib/action_dispatch/testing/integration.rb
@@ -411,7 +411,7 @@ module ActionDispatch
   # At its simplest, you simply extend IntegrationTest and write your tests
   # using the get/post methods:
   #
-  #   require "#{File.dirname(__FILE__)}/test_helper"
+  #   require "test_helper"
   #
   #   class ExampleTest < ActionController::IntegrationTest
   #     fixtures :people
@@ -435,7 +435,7 @@ module ActionDispatch
   # powerful testing DSL that is specific for your application. You can even
   # reference any named routes you happen to have defined!
   #
-  #   require "#{File.dirname(__FILE__)}/test_helper"
+  #   require "test_helper"
   #
   #   class AdvancedTest < ActionController::IntegrationTest
   #     fixtures :people, :rooms