A hopefully more successful attempt at the Routing branch merge

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@617 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

20 files changed, 1441 insertions, 196 deletions

diff --git a/actionpack/lib/action_controller/assertions/action_pack_assertions.rb b/actionpack/lib/action_controller/assertions/action_pack_assertions.rb
index c26941cd6b..a8819550e6 100644
--- a/actionpack/lib/action_controller/assertions/action_pack_assertions.rb
+++ b/actionpack/lib/action_controller/assertions/action_pack_assertions.rb
@@ -141,7 +141,7 @@ module Test #:nodoc:
           end
         end
       end
-
+      
       # ensure our redirection url is an exact match
       def assert_redirect_url(url=nil, message=nil)
         assert_redirect(message)
@@ -158,6 +158,36 @@ module Test #:nodoc:
         assert_block(msg) { response.redirect_url_match?(pattern) }
       end
 
+      # -- routing assertions --------------------------------------------------
+
+      # Asserts that the routing of the given path is handled correctly and that the parsed options match.
+      # Also verifies that the provided options can be used to generate the provided path.
+      def assert_routing(path, options, defaults={}, extras={}, message=nil)
+        defaults[:controller] ||= options[:controller] # Assume given controller,
+        request = ActionController::TestRequest.new({}, {}, nil)
+        request.path_parameters = defaults.clone
+        
+        ActionController::Routing::Routes.reload if ActionController::Routing::Routes.empty? # Load routes.rb if it hasn't been loaded.
+        
+        generated_path, found_extras = ActionController::Routing::Routes.generate(options, request)
+        generated_path = generated_path.join('/')
+        msg = build_message(message, "found extras <?>, not <?>", found_extras, extras)
+        assert_block(msg) { found_extras == extras }
+        
+        msg = build_message(message, "The generated path <?> did not match <?>", generated_path, path)
+        assert_block(msg) { path == generated_path }
+        
+        request = ActionController::TestRequest.new({}, {}, nil)
+        request.path = path
+        ActionController::Routing::Routes.recognize!(request)
+        
+        expected_options = options.clone
+        extras.each {|k,v| expected_options.delete k}
+        
+        msg = build_message(message, "The recognized options <?> did not match <?>", request.path_parameters, expected_options)
+        assert_block(msg) { request.path_parameters == expected_options }
+      end
+
       # -- template assertions ------------------------------------------------
 
       # ensure that a template object with the given name exists
diff --git a/actionpack/lib/action_controller/base.rb b/actionpack/lib/action_controller/base.rb
index cfcd46d985..5d7ccf72f1 100755
--- a/actionpack/lib/action_controller/base.rb
+++ b/actionpack/lib/action_controller/base.rb
@@ -1,5 +1,6 @@
 require 'action_controller/request'
 require 'action_controller/response'
+require 'action_controller/routing'
 require 'action_controller/url_rewriter'
 require 'action_controller/support/class_attribute_accessors'
 require 'action_controller/support/class_inheritable_attributes'
@@ -13,6 +14,15 @@ module ActionController #:nodoc:
   end
   class MissingTemplate < ActionControllerError #:nodoc:
   end
+  class RoutingError < ActionControllerError
+    attr_reader :failures
+    def initialize(message, failures=[])
+      super(message)
+      @failures = failures
+    end
+  end
+  class UnknownController < ActionControllerError #:nodoc:
+  end
   class UnknownAction < ActionControllerError #:nodoc:
   end
   class MissingFile < ActionControllerError #:nodoc:
@@ -205,6 +215,12 @@ module ActionController #:nodoc:
     # should instead be implemented in the controller to determine when debugging screens should be shown.
     @@consider_all_requests_local = true
     cattr_accessor :consider_all_requests_local
+    
+    # Enable or disable the collection of failure information for RoutingErrors.
+    # This information can be extremely useful when tweaking custom routes, but is
+    # pointless once routes have been tested and verified.
+    @@debug_routes = true
+    cattr_accessor :debug_routes
 
     # Template root determines the base from which template references will be made. So a call to render("test/template")
     # will be converted to "#{template_root}/test/template.rhtml".
@@ -261,6 +277,14 @@ module ActionController #:nodoc:
       def controller_name
         Inflector.underscore(controller_class_name.sub(/Controller/, ""))
       end
+      
+      # Convert the class name from something like "OneModule::TwoModule::NeatController" to "one_module/two_module/neat".
+      def controller_path
+        components = self.name.to_s.split('::').collect { |name| name.underscore }
+        components[-1] = $1 if /^(.*)_controller$/ =~ components[-1]
+        components.shift if components.first == 'controllers' # Transitional conditional to accomodate root Controllers module
+        components.join('/')
+      end
     end
 
     public
@@ -337,10 +361,6 @@ module ActionController #:nodoc:
         end
       end
 
-      def module_name
-        @params["module"]
-      end
-
       # Converts the class name from something like "OneModule::TwoModule::NeatController" to "NeatController".
       def controller_class_name
         self.class.controller_class_name
@@ -594,7 +614,7 @@ module ActionController #:nodoc:
       end
       
       def initialize_current_url
-        @url = UrlRewriter.new(@request, controller_name, action_name)
+        @url = UrlRewriter.new(@request, @params.clone())
       end
 
       def log_processing
@@ -691,7 +711,7 @@ module ActionController #:nodoc:
       end
 
       def default_template_name(default_action_name = action_name)
-        module_name ? "#{module_name}/#{controller_name}/#{default_action_name}" : "#{controller_name}/#{default_action_name}"
+        "#{self.class.controller_path}/#{default_action_name}"
       end
   end
 end
diff --git a/actionpack/lib/action_controller/cgi_process.rb b/actionpack/lib/action_controller/cgi_process.rb
index 92b19fbf18..c301b322e5 100644
--- a/actionpack/lib/action_controller/cgi_process.rb
+++ b/actionpack/lib/action_controller/cgi_process.rb
@@ -46,8 +46,16 @@ module ActionController #:nodoc:
       super()
     end
 
+    def query_string
+      return @cgi.query_string unless @cgi.query_string.nil? || @cgi.query_string.empty?
+      parts = env['REQUEST_URI'].split('?')
+      parts.shift
+      return parts.join('?')
+    end
+
     def query_parameters
-      @cgi.query_string ? CGIMethods.parse_query_parameters(@cgi.query_string) : {}
+      qs = self.query_string
+      qs.empty? ? {} : CGIMethods.parse_query_parameters(query_string)
     end
 
     def request_parameters
diff --git a/actionpack/lib/action_controller/helpers.rb b/actionpack/lib/action_controller/helpers.rb
index 1201d31946..a97fd93410 100644
--- a/actionpack/lib/action_controller/helpers.rb
+++ b/actionpack/lib/action_controller/helpers.rb
@@ -48,25 +48,22 @@ module ActionController #:nodoc:
       def helper(*args, &block)
         args.flatten.each do |arg|
           case arg
-          when Module
-            add_template_helper(arg)
-          when String, Symbol
-            file_name  = Inflector.underscore(arg.to_s.downcase) + '_helper'
-            class_name = Inflector.camelize(file_name)
-            begin
-              require_dependency(file_name)
-            rescue LoadError => load_error
-              requiree = / -- (.*?)(\.rb)?$/.match(load_error).to_a[1]
-              if requiree == file_name
-                raise LoadError, "Missing helper file helpers/#{file_name}.rb"
-              else
-                raise LoadError, "Can't load file: #{requiree}"
+            when Module
+              add_template_helper(arg)
+            when String, Symbol
+              file_name  = arg.to_s.underscore + '_helper'
+              class_name = file_name.camelize
+
+              begin
+                require_dependency(file_name)
+              rescue LoadError => load_error
+                requiree = / -- (.*?)(\.rb)?$/.match(load_error).to_a[1]
+                raise LoadError, requiree == file_name ? "Missing helper file helpers/#{file_name}.rb" : "Can't load file: #{requiree}"
               end
-            end
-            raise ArgumentError, "Missing #{class_name} module in helpers/#{file_name}.rb" unless Object.const_defined?(class_name)
-            add_template_helper(Object.const_get(class_name))
-          else
-            raise ArgumentError, 'helper expects String, Symbol, or Module argument'
+
+              add_template_helper(class_name.constantize)
+            else
+              raise ArgumentError, 'helper expects String, Symbol, or Module argument'
           end
         end
 
@@ -95,7 +92,7 @@ module ActionController #:nodoc:
         def inherited(child)
           inherited_without_helper(child)
           begin
-            child.helper(child.controller_name)
+            child.helper(child.controller_path)
           rescue ArgumentError, LoadError
             # No default helper available for this controller
           end
diff --git a/actionpack/lib/action_controller/request.rb b/actionpack/lib/action_controller/request.rb
index 3e2344c3cb..2e7957caf9 100755
--- a/actionpack/lib/action_controller/request.rb
+++ b/actionpack/lib/action_controller/request.rb
@@ -3,7 +3,8 @@ module ActionController
   class AbstractRequest
     # Returns both GET and POST parameters in a single hash.
     def parameters
-      @parameters ||= request_parameters.update(query_parameters)
+      # puts "#{request_parameters.inspect} | #{query_parameters.inspect} | #{path_parameters.inspect}"
+      @parameters ||= request_parameters.merge(query_parameters).merge(path_parameters).with_indifferent_access
     end
 
     def method
@@ -73,7 +74,7 @@ module ActionController
     end
     
     def request_uri
-      env['REQUEST_URI']
+      (%r{^\w+\://[^/]+(/.*|$)$} =~ env['REQUEST_URI']) ? $1 : env['REQUEST_URI'] # Remove domain, which webrick puts into the request_uri.
     end
 
     def protocol
@@ -85,7 +86,7 @@ module ActionController
     end
 
     def path
-      request_uri ? request_uri.split('?').first : ''
+      path = request_uri ? request_uri.split('?').first : ''
     end
 
     def port
@@ -100,7 +101,16 @@ module ActionController
     def host_with_port
       env['HTTP_HOST'] || host + port_string
     end
+  
+    def path_parameters=(parameters)
+      @path_parameters = parameters
+      @parameters = nil
+    end
 
+    def path_parameters
+      @path_parameters ||= {}
+    end
+    
     #--
     # Must be implemented in the concrete request
     #++
diff --git a/actionpack/lib/action_controller/rescue.rb b/actionpack/lib/action_controller/rescue.rb
index eb7f614de0..907cebc250 100644
--- a/actionpack/lib/action_controller/rescue.rb
+++ b/actionpack/lib/action_controller/rescue.rb
@@ -48,7 +48,11 @@ module ActionController #:nodoc:
 
       # Overwrite to implement public exception handling (for requests answering false to <tt>local_request?</tt>).
       def rescue_action_in_public(exception) #:doc:
-        render_text "<html><body><h1>Application error (Rails)</h1></body></html>"
+        case exception
+          when RoutingError, UnknownAction then
+            render_text(IO.read(File.join(RAILS_ROOT, 'public', '404.html')), "404 Not Found")
+          else render_text "<html><body><h1>Application error (Rails)</h1></body></html>"
+        end
       end
 
       # Overwrite to expand the meaning of a local request in order to show local rescues on other occurences than
@@ -66,7 +70,7 @@ module ActionController #:nodoc:
         @contents = @template.render_file(template_path_for_local_rescue(exception), false)
     
         @headers["Content-Type"] = "text/html"
-        render_file(rescues_path("layout"), "500 Internal Error")
+        render_file(rescues_path("layout"), response_code_for_rescue(exception))
       end
     
     private
@@ -110,13 +114,21 @@ module ActionController #:nodoc:
         rescues_path(
           case exception
             when MissingTemplate then "missing_template"
+            when RoutingError then "routing_error"
             when UnknownAction   then "unknown_action"
             when ActionView::TemplateError then "template_error"
-            else "diagnostics"
+            else raise ;"diagnostics"
           end
         )
       end
       
+      def response_code_for_rescue(exception)
+        case exception
+          when UnknownAction, RoutingError then "404 Page Not Found"
+          else "500 Internal Error"
+        end
+      end
+      
       def clean_backtrace(exception)
         exception.backtrace.collect { |line| Object.const_defined?(:RAILS_ROOT) ? line.gsub(RAILS_ROOT, "") : line }
       end
diff --git a/actionpack/lib/action_controller/routing.rb b/actionpack/lib/action_controller/routing.rb
new file mode 100644
index 0000000000..39ce487e62
--- /dev/null
+++ b/actionpack/lib/action_controller/routing.rb
@@ -0,0 +1,260 @@
+module ActionController
+  module Routing
+    ROUTE_FILE = defined?(RAILS_ROOT) ? File.expand_path(File.join(RAILS_ROOT, 'config', 'routes')) : nil
+  
+    class Route
+      attr_reader :defaults # The defaults hash
+      
+      def initialize(path, hash={})
+        raise ArgumentError, "Second argument must be a hash!" unless hash.kind_of?(Hash)
+        @defaults = {}
+        @requirements = {}
+        self.items = path
+        hash.each do |k, v|
+          raise TypeError, "Hash may only contain symbols!" unless k.kind_of? Symbol
+          (@items.include?(k) ? @defaults : @requirements)[k] = v
+        end
+        
+        # Add in defaults for :action and :id.
+        [[:action, 'index'], [:id, nil]].each do |name, default|
+          @defaults[name] = default if @items.include?(name) && ! (@requirements.key?(name) || @defaults.key?(name))
+        end
+      end
+      
+      # Generate a URL given the provided options.
+      # All values in options should be symbols.
+      # Returns the path and the unused names in a 2 element array.
+      # If generation fails, [nil, nil] is returned
+      # Generation can fail because of a missing value, or because an equality check fails.
+      #
+      # Generate urls will be as short as possible. If the last component of a url is equal to the default value,
+      # then that component is removed. This is applied as many times as possible. So, your index controller's
+      # index action will generate []
+      def generate(options, defaults={})
+        non_matching = @requirements.inject([]) {|a, (k, v)| ((options[k] || defaults[k]) == v) ? a : a << k}
+        return nil, "Options mismatch requirements: #{non_matching.join ', '}" unless non_matching.empty?
+        
+        used_names = @requirements.inject({}) {|hash, (k, v)| hash[k] = true; hash}
+        components = @items.collect do |item|
+          if item.kind_of? Symbol
+            used_names[item] = true
+            value = options[item] || defaults[item] || @defaults[item]
+            return nil, "#{item.inspect} was not given and has no default." if value.nil? && ! (@defaults.key?(item) && @defaults[item].nil?) # Don't leave if nil value.
+            defaults = {} unless defaults == {} || value == defaults[item] # Stop using defaults if this component isn't the same as the default.
+            value
+          else item
+          end
+        end
+        
+        @items.reverse_each do |item| # Remove default components from the end of the generated url.
+          break unless item.kind_of?(Symbol) && @defaults[item] == components.last
+          components.pop
+        end
+        
+        # If we have any nil components then we can't proceed.
+        # This might need to be changed. In some cases we may be able to return all componets after nil as extras.
+        missing = []; components.each_with_index {|c, i| missing << @items[i] if c.nil?}
+        return nil, "No values provided for component#{'s' if missing.length > 1} #{missing.join ', '} but values are required due to use of later components" unless missing.empty? # how wide is your screen?
+        
+        unused = (options.keys - used_names.keys).inject({}) do |unused, key|
+          unused[key] = options[key] if options[key] != @defaults[key]
+          unused
+        end
+        
+        components.collect! {|c| c.to_s}
+        components.unshift(components.shift + '/') if components.length == 1 && @items.first == :controller # Add '/' to controllers
+        
+        return components, unused
+      end
+      
+      # Recognize the provided path, returning a hash of recognized values, or [nil, reason] if the path isn't recognized.
+      # The path should be a list of component strings.
+      # Options is a hash of the ?k=v pairs
+      def recognize(components, options={})
+        options = options.clone
+        components = components.clone
+        controller_class = nil
+        
+        @items.each do |item|
+          if item == :controller # Special case for controller
+            if components.empty? && @defaults[:controller]
+              controller_class, leftover = eat_path_to_controller(@defaults[:controller].split('/'))
+              raise RoutingError, "Default controller does not exist: #{@defaults[:controller]}" if controller_class.nil? || leftover.empty? == false
+            else
+              controller_class, remaining_components = eat_path_to_controller(components)
+              return nil, "No controller found at subpath #{components.join('/')}" if controller_class.nil?
+              components = remaining_components
+            end
+            options[:controller] = controller_class.controller_path
+          elsif item.kind_of? Symbol
+            value = components.shift || @defaults[item]
+            return nil, "No value or default for parameter #{item.inspect}" if value.nil? && ! (@defaults.key?(item) && @defaults[item].nil?)
+            options[item] = value
+          else
+            return nil, "No value available for component #{item.inspect}" if components.empty?
+            component = components.shift
+            return nil, "Value for component #{item.inspect} doesn't match #{component}" if component != item
+          end
+        end
+        
+        if controller_class.nil? && @requirements[:controller] # Load a default controller
+          controller_class, extras = eat_path_to_controller(@requirements[:controller].split('/'))
+          raise RoutingError, "Illegal controller path for route default: #{@requirements[:controller]}" unless controller_class && extras.empty?
+          options[:controller] = controller_class.controller_path
+        end
+        options = @requirements.merge(options)
+
+        return nil, "Route recognition didn't find a controller class!" unless controller_class
+        return nil, "Unused components were left: #{components.join '/'}" unless components.empty?
+        options.delete_if {|k, v| v.nil?} # Remove nil values.
+        return controller_class, options
+      end
+      
+      def inspect
+        when_str = @requirements.empty? ? "" : " when #{@requirements.inspect}"
+        default_str = @defaults.empty? ? "" : " || #{@defaults.inspect}"
+        "<#{self.class.to_s} #{@items.collect{|c| c.kind_of?(String) ? c : c.inspect}.join('/').inspect}#{default_str}#{when_str}>"
+      end
+      
+      protected
+        # Find the controller given a list of path components.
+        # Return the controller class and the unused path components.
+        def eat_path_to_controller(path)
+          path.inject([Controllers, 1]) do |(mod, length), name|
+            name = name.camelize
+            controller_name = name + "Controller"
+            return mod.const_get(controller_name), path[length..-1] if mod.const_available? controller_name
+            return nil, nil unless mod.const_available? name
+            [mod.const_get(name), length + 1]
+          end
+          return nil, nil # Path ended, but no controller found.
+        end
+      
+        def items=(path)
+          items = path.split('/').collect {|c| (/^:(\w+)$/ =~ c) ? $1.intern : c} if path.kind_of?(String) # split and convert ':xyz' to symbols
+          items.shift if items.first == ""
+          items.pop if items.last == ""
+          @items = items
+          
+          # Verify uniqueness of each component.
+          @items.inject({}) do |seen, item|
+            if item.kind_of? Symbol
+              raise ArgumentError, "Illegal route path -- duplicate item #{item}\n   #{path.inspect}" if seen.key? item
+              seen[item] = true
+            end
+            seen
+          end
+        end
+    end
+    
+    class RouteSet
+      def initialize
+        @routes = []
+      end
+      
+      def add_route(route)
+        raise TypeError, "#{route.inspect} is not a Route instance!" unless route.kind_of?(Route)
+        @routes << route
+      end
+      def empty?
+        @routes.empty?
+      end
+      def each
+        @routes.each {|route| yield route}
+      end
+      
+      # Generate a path for the provided options
+      # Returns the path as an array of components and a hash of unused names
+      # Raises RoutingError if not route can handle the provided components.
+      #
+      # Note that we don't return the first generated path. We do this so that when a route
+      # generates a path from a subset of the available options we can keep looking for a 
+      # route which can generate a path that uses more options.
+      # Note that we *do* return immediately if 
+      def generate(options, request)
+        raise RoutingError, "There are no routes defined!" if @routes.empty?
+        options = options.symbolize_keys
+        defaults = request.path_parameters.symbolize_keys
+        expand_controller_path!(options, defaults)
+
+        failures = []
+        selected = nil
+        self.each do |route|
+          path, unused = route.generate(options, defaults)
+          if path.nil?
+            failures << [route, unused] if ActionController::Base.debug_routes
+          else 
+            return path, unused if unused.empty? # Found a perfect route -- we're finished.
+            if selected.nil? || unused.length < selected.last.length
+              failures << [selected.first, "A better url than #{selected[1]} was found."] if selected
+              selected = [route, path, unused]
+            end
+          end
+        end
+        
+        return selected[1..-1] unless selected.nil?
+        raise RoutingError.new("Generation failure: No route for url_options #{options.inspect}, defaults: #{defaults.inspect}", failures)
+      end
+      
+      # Recognize the provided path.
+      # Raise RoutingError if the path can't be recognized.
+      def recognize!(request)
+        path = ((%r{^/?(.*)/?$} =~ request.path) ? $1 : request.path).split('/')
+        raise RoutingError, "There are no routes defined!" if @routes.empty?
+        
+        failures = []
+        self.each do |route|
+          controller, options = route.recognize(path)
+          if controller.nil?
+            failures << [route, options] if ActionController::Base.debug_routes
+          else
+            options.each {|k, v| request.path_parameters[k] = CGI.unescape(v)}
+            return controller
+          end
+        end
+        
+        raise RoutingError.new("No route for path: #{path.join('/').inspect}", failures)
+      end
+      
+      def expand_controller_path!(options, defaults)
+        if options[:controller]
+          if /^\// =~ options[:controller]
+            options[:controller] = options[:controller][1..-1]
+            defaults.clear # Sending to absolute controller implies fresh defaults
+          else
+            relative_to = defaults[:controller] ? defaults[:controller].split('/')[0..-2].join('/') : ''
+            options[:controller] = relative_to.empty? ? options[:controller] : "#{relative_to}/#{options[:controller]}"
+          end
+        else
+          options[:controller] = defaults[:controller]
+        end
+      end
+      
+      def route(*args)
+        add_route(Route.new(*args))
+      end
+      alias :connect :route
+      
+      def reload
+        begin require_dependency(ROUTE_FILE) 
+        rescue LoadError, ScriptError => e
+          raise RoutingError, "Cannot load config/routes.rb:\n    #{e.message}"
+        ensure # Ensure that there is at least one route:
+          connect(':controller/:action/:id', :action => 'index', :id => nil) if @routes.empty?
+        end
+      end
+      
+      def draw
+        @routes.clear
+        yield self
+      end
+    end
+    
+    def self.draw(*args, &block)
+      Routes.draw(*args) {|*args| block.call(*args)}
+    end
+    
+    Routes = RouteSet.new
+    #Routes.reload # Do this here, so that server will die on load if SyntaxError or whatnot.
+  end
+end
\ No newline at end of file
diff --git a/actionpack/lib/action_controller/scaffolding.rb b/actionpack/lib/action_controller/scaffolding.rb
index 9c1311efa3..140df73972 100644
--- a/actionpack/lib/action_controller/scaffolding.rb
+++ b/actionpack/lib/action_controller/scaffolding.rb
@@ -149,7 +149,7 @@ module ActionController
           
           private
             def render#{suffix}_scaffold(action = caller_method_name(caller))
-              if template_exists?("\#{controller_name}/\#{action}")
+              if template_exists?("\#{self.class.controller_path}/\#{action}")
                 render_action(action)
               else
                 @scaffold_class = #{class_name}
diff --git a/actionpack/lib/action_controller/templates/rescues/routing_error.rhtml b/actionpack/lib/action_controller/templates/rescues/routing_error.rhtml
new file mode 100644
index 0000000000..82c01e10c9
--- /dev/null
+++ b/actionpack/lib/action_controller/templates/rescues/routing_error.rhtml
@@ -0,0 +1,8 @@
+<h1>Routing Error</h1>
+<p><%=h @exception.message %></p>
+<% unless @exception.failures.empty? %><p>
+	<h2>Failure reasons:</h2>
+	<% @exception.failures.each do |route, reason| %>
+		<%=h route.inspect.gsub('\\', '') %> failed because <%=h reason.downcase %><br />
+  <% end %>
+</p><% end %>
diff --git a/actionpack/lib/action_controller/test_process.rb b/actionpack/lib/action_controller/test_process.rb
index d4dfe7933d..3223da198c 100644
--- a/actionpack/lib/action_controller/test_process.rb
+++ b/actionpack/lib/action_controller/test_process.rb
@@ -31,8 +31,8 @@ module ActionController #:nodoc:
 
   class TestRequest < AbstractRequest #:nodoc:
     attr_accessor :cookies
-    attr_accessor :query_parameters, :request_parameters, :session, :env
-    attr_accessor :host, :path, :request_uri, :remote_addr
+    attr_accessor :query_parameters, :request_parameters, :path, :session, :env
+    attr_accessor :host, :remote_addr
 
     def initialize(query_parameters = nil, request_parameters = nil, session = nil)
       @query_parameters   = query_parameters || {}
@@ -58,11 +58,28 @@ module ActionController #:nodoc:
       @parameters = nil
     end
     
+    # Used to check AbstractRequest's request_uri functionality.
+    # Disables the use of @path and @request_uri so superclass can handle those.
+    def set_REQUEST_URI(value)
+      @env["REQUEST_URI"] = value
+      @request_uri = nil
+      @path = nil
+    end
+
     def request_uri=(uri)
       @request_uri = uri
       @path = uri.split("?").first
     end
 
+    def request_uri
+      @request_uri || super()
+    end
+
+    def path
+      @path || super()
+    end
+    
+
     private
       def initialize_containers
         @env, @cookies = {}, {}
@@ -237,6 +254,7 @@ module Test
         def process(action, parameters = nil, session = nil)
           @request.env['REQUEST_METHOD'] ||= "GET"
           @request.action = action.to_s
+          @request.path_parameters = { :controller => @controller.class.controller_path }
           @request.parameters.update(parameters) unless parameters.nil?
           @request.session = ActionController::TestSession.new(session) unless session.nil?
           @controller.process(@request, @response)
diff --git a/actionpack/lib/action_controller/url_rewriter.rb b/actionpack/lib/action_controller/url_rewriter.rb
index 3451e6acc9..a1b1a2a57b 100644
--- a/actionpack/lib/action_controller/url_rewriter.rb
+++ b/actionpack/lib/action_controller/url_rewriter.rb
@@ -1,41 +1,29 @@
 module ActionController
   # Rewrites URLs for Base.redirect_to and Base.url_for in the controller.
+
   class UrlRewriter #:nodoc:
-    VALID_OPTIONS = [:action, :action_prefix, :action_suffix, :application_prefix, :module, :controller, :controller_prefix, :anchor, :params, :path_params, :id, :only_path, :overwrite_params, :host, :protocol ]
-  
-    def initialize(request, controller, action)
-      @request, @controller, @action = request, controller, action
+    RESERVED_OPTIONS = [:anchor, :params, :path_params, :only_path, :host, :protocol]
+    def initialize(request, parameters)
+      @request, @parameters = request, parameters
       @rewritten_path = @request.path ? @request.path.dup : ""
     end
     
     def rewrite(options = {})
-      validate_options(VALID_OPTIONS, options.keys)
-
-      rewrite_url(
-        rewrite_path(@rewritten_path, resolve_aliases(options)), 
-        options
-      )
-    end
-
-    def to_s
-      to_str
+      rewrite_url(rewrite_path(options), options)
     end
 
     def to_str
-      "#{@request.protocol}, #{@request.host_with_port}, #{@request.path}, #{@controller}, #{@action}, #{@request.parameters.inspect}"
+  		"#{@request.protocol}, #{@request.host_with_port}, #{@request.path}, #{@parameters[:controller]}, #{@parameters[:action]}, #{@request.parameters.inspect}"
     end
 
+    alias_method :to_s, :to_str
+
     private
       def validate_options(valid_option_keys, supplied_option_keys)
         unknown_option_keys = supplied_option_keys - valid_option_keys
         raise(ActionController::ActionControllerError, "Unknown options: #{unknown_option_keys}") unless unknown_option_keys.empty?
       end
-  
-      def resolve_aliases(options)
-        options[:controller_prefix] = options[:module] unless options[:module].nil?
-        options
-      end
-
+	  
       def rewrite_url(path, options)        
         rewritten_url = ""
         rewritten_url << (options[:protocol] || @request.protocol) unless options[:only_path]
@@ -45,15 +33,18 @@ module ActionController
         rewritten_url << path
         rewritten_url << build_query_string(new_parameters(options)) if options[:params] || options[:overwrite_params]
         rewritten_url << "##{options[:anchor]}" if options[:anchor]
+
         return rewritten_url
       end
 
-      def rewrite_path(path, options)
-        include_id_in_path_params(options)
-
-        path = rewrite_action(path, options)      if options[:action] || options[:action_prefix]
-        path = rewrite_path_params(path, options) if options[:path_params]
-        path = rewrite_controller(path, options)  if options[:controller] || options[:controller_prefix]
+      def rewrite_path(options)
+        options = options.symbolize_keys
+        RESERVED_OPTIONS.each {|k| options.delete k}
+        
+        path, extras = Routing::Routes.generate(options, @request)
+        path = "/#{path.join('/')}"
+        path += build_query_string(extras)
+        
         return path
       end
 
@@ -76,49 +67,6 @@ module ActionController
         end
       end
 
-      def rewrite_action(path, options)
-        # This regex assumes that "index" actions won't be included in the URL
-        all, controller_prefix, action_prefix, action_suffix =
-          /^\/(.*)#{@controller}\/(.*)#{@action == "index" ? "" : @action}(.*)/.match(path).to_a
-
-        if @action == "index" 
-          if action_prefix == "index" 
-            # we broke the parsing assumption that this would be excluded, so
-            # don't tell action_name about our little boo-boo
-            path = path.sub(action_prefix, action_name(options, nil))
-          elsif action_prefix && !action_prefix.empty?
-            path = path.sub(%r(/#{action_prefix}/?), "/" + action_name(options, action_prefix))
-          else
-            path = path.sub(%r(#{@controller}/?$), @controller + "/" + action_name(options)) # " ruby-mode
-          end
-        else
-          path = path.sub(
-            @controller + "/" + (action_prefix || "") + @action + (action_suffix || ""), 
-            @controller + "/" + action_name(options, action_prefix)
-          )
-        end
-
-        if options[:controller_prefix] && !options[:controller]
-          ensure_slash_suffix(options, :controller_prefix)
-          if controller_prefix
-            path = path.sub(controller_prefix, options[:controller_prefix])
-          else
-            path = options[:controller_prefix] + path
-          end
-        end
-        
-        return path
-      end
-
-      def rewrite_controller(path, options)
-        all, controller_prefix = /^\/(.*?)#{@controller}/.match(path).to_a
-        path = "/"
-        path << controller_name(options, controller_prefix)
-        path << action_name(options) if options[:action]
-        path << path_params_in_list(options) if options[:path_params]
-        return path
-      end
-
       def action_name(options, action_prefix = nil, action_suffix = nil)
         ensure_slash_suffix(options, :action_prefix)
         ensure_slash_prefix(options, :action_suffix)
@@ -174,16 +122,16 @@ module ActionController
       def build_query_string(hash)
         elements = []
         query_string = ""
-
+        
         hash.each do |key, value|
+          key = key.to_s
           key = CGI.escape key
           key += '[]' if value.class == Array
           value = [ value ] unless value.class == Array
           value.each { |val| elements << "#{key}=#{CGI.escape(val.to_s)}" }
-      	end
-
-        unless elements.empty? then query_string << ("?" + elements.join("&")) end
+        end
         
+        query_string << ("?" + elements.join("&")) unless elements.empty?
         return query_string
       end
   end
diff --git a/actionpack/lib/action_view/partials.rb b/actionpack/lib/action_view/partials.rb
index f771f0a826..bbb38778b7 100644
--- a/actionpack/lib/action_view/partials.rb
+++ b/actionpack/lib/action_view/partials.rb
@@ -60,7 +60,7 @@ module ActionView
         if partial_path.include?('/')
           return File.dirname(partial_path), File.basename(partial_path)
         else
-          return controller.send(:controller_name), partial_path
+          return controller.class.controller_path, partial_path
         end
       end
 
diff --git a/actionpack/test/controller/cookie_test.rb b/actionpack/test/controller/cookie_test.rb
index 3f9dafacd6..2b5b1cae9f 100644
--- a/actionpack/test/controller/cookie_test.rb
+++ b/actionpack/test/controller/cookie_test.rb
@@ -28,10 +28,6 @@ class CookieTest < Test::Unit::TestCase
       render_text "hello world"
     end
 
-    def access_frozen_cookies
-      @cookies["wont"] = "work"
-    end
-
     def rescue_action(e) raise end
   end
 
@@ -67,11 +63,6 @@ class CookieTest < Test::Unit::TestCase
     assert_equal 2, process_request.headers["cookie"].size
   end
 
-  def test_setting_cookie_on_frozen_instance_variable
-    @request.action = "access_frozen_cookies"
-    assert_raises(TypeError) { process_request }
-  end
-
   private
     def process_request
       TestController.process(@request, @response)
diff --git a/actionpack/test/controller/helper_test.rb b/actionpack/test/controller/helper_test.rb
index b824e40125..0a9840f705 100644
--- a/actionpack/test/controller/helper_test.rb
+++ b/actionpack/test/controller/helper_test.rb
@@ -1,20 +1,30 @@
 require File.dirname(__FILE__) + '/../abstract_unit'
+$:.unshift(File.dirname(__FILE__) + '/../fixtures/helpers')
 
-class HelperTest < Test::Unit::TestCase
-  HELPER_PATHS = %w(/../fixtures/helpers)
+class TestController < ActionController::Base
+  attr_accessor :delegate_attr
+  def delegate_method() end
+  def rescue_action(e) raise end
+end
+
+module Fun
+  class GamesController < ActionController::Base
+    def render_hello_world
+      render_template "hello: <%= stratego %>"
+    end
 
-  class TestController < ActionController::Base
-    attr_accessor :delegate_attr
-    def delegate_method() end
     def rescue_action(e) raise end
   end
+end
 
-  module LocalAbcHelper
-    def a() end
-    def b() end
-    def c() end
-  end
+module LocalAbcHelper
+  def a() end
+  def b() end
+  def c() end
+end
 
+class HelperTest < Test::Unit::TestCase
+  HELPER_PATHS = %w(/../fixtures/helpers)
 
   def setup
     # Increment symbol counter.
@@ -102,6 +112,13 @@ class HelperTest < Test::Unit::TestCase
     assert template_methods.include?('delegate_attr=')
   end
 
+  def test_helper_for_nested_controller
+    @request    = ActionController::TestRequest.new
+    @response   = ActionController::TestResponse.new
+    @request.action = "render_hello_world"
+    
+    assert_equal "hello: Iz guuut!", Fun::GamesController.process(@request, @response).body
+  end
 
   private
     def helper_methods;   TestHelper.instance_methods      end
diff --git a/actionpack/test/controller/render_test.rb b/actionpack/test/controller/render_test.rb
index f983960e2e..afffd15793 100644
--- a/actionpack/test/controller/render_test.rb
+++ b/actionpack/test/controller/render_test.rb
@@ -2,86 +2,91 @@ require File.dirname(__FILE__) + '/../abstract_unit'
 
 Customer = Struct.new("Customer", :name)
 
-class RenderTest < Test::Unit::TestCase
-  class TestController < ActionController::Base
-    layout :determine_layout
-
+module Fun
+  class GamesController < ActionController::Base
     def hello_world
     end
+  end
+end
 
-    def render_hello_world
-      render "test/hello_world"
-    end
-
-    def render_hello_world_from_variable
-      @person = "david"
-      render_text "hello #{@person}"
-    end
 
-    def render_action_hello_world
-      render_action "hello_world"
-    end
-    
-    def render_text_hello_world
-      render_text "hello world"
-    end
+class TestController < ActionController::Base
+  layout :determine_layout
 
-    def render_custom_code
-      render_text "hello world", "404 Moved"
-    end
-    
-    def render_xml_hello
-      @name = "David"
-      render "test/hello"
-    end
+  def hello_world
+  end
 
-    def greeting
-      # let's just rely on the template
-    end
+  def render_hello_world
+    render "test/hello_world"
+  end
 
-    def layout_test
-      render_action "hello_world"
-    end
-    
-    def builder_layout_test
-      render_action "hello"
-    end
+  def render_hello_world_from_variable
+    @person = "david"
+    render_text "hello #{@person}"
+  end
 
-    def partials_list
-      @customers = [ Customer.new("david"), Customer.new("mary") ]
-      render_action "list"
-    end
+  def render_action_hello_world
+    render_action "hello_world"
+  end
+  
+  def render_text_hello_world
+    render_text "hello world"
+  end
 
-    def modgreet
-    end
+  def render_custom_code
+    render_text "hello world", "404 Moved"
+  end
+  
+  def render_xml_hello
+    @name = "David"
+    render "test/hello"
+  end
 
-    def rescue_action(e) raise end
-      
-    private
-      def determine_layout
-        case action_name 
-          when "layout_test":         "layouts/standard"
-          when "builder_layout_test": "layouts/builder"
-        end
-      end
+  def greeting
+    # let's just rely on the template
   end
 
-  TestController.template_root = File.dirname(__FILE__) + "/../fixtures/"
+  def layout_test
+    render_action "hello_world"
+  end
   
-  class TestLayoutController < ActionController::Base
-    layout "layouts/standard"
-    
-    def hello_world
-    end
+  def builder_layout_test
+    render_action "hello"
+  end
+
+  def partials_list
+    @customers = [ Customer.new("david"), Customer.new("mary") ]
+    render_action "list"
+  end
+
+  def rescue_action(e) raise end
     
-    def hello_world_outside_layout
+  private
+    def determine_layout
+      case action_name 
+        when "layout_test":         "layouts/standard"
+        when "builder_layout_test": "layouts/builder"
+      end
     end
+end
 
-    def rescue_action(e)
-      raise unless ActionController::MissingTemplate === e
-    end
+TestController.template_root = File.dirname(__FILE__) + "/../fixtures/"
+
+class TestLayoutController < ActionController::Base
+  layout "layouts/standard"
+  
+  def hello_world
   end
+  
+  def hello_world_outside_layout
+  end
+
+  def rescue_action(e)
+    raise unless ActionController::MissingTemplate === e
+  end
+end
 
+class RenderTest < Test::Unit::TestCase
   def setup
     @request    = ActionController::TestRequest.new
     @response   = ActionController::TestResponse.new
@@ -170,10 +175,9 @@ class RenderTest < Test::Unit::TestCase
     assert_equal "Hello: davidHello: mary", process_request.body
   end
 
-  def test_module_rendering
-    @request.action = "modgreet"
-    @request.parameters["module"] = "scope"
-    assert_equal "<p>Beautiful modules!</p>", process_request.body
+  def test_nested_rendering
+    @request.action = "hello_world"
+    assert_equal "Living in a nested world", Fun::GamesController.process(@request, @response).body
   end
 
   private
diff --git a/actionpack/test/controller/request_test.rb b/actionpack/test/controller/request_test.rb
index ebab660eab..c31cdd460b 100644
--- a/actionpack/test/controller/request_test.rb
+++ b/actionpack/test/controller/request_test.rb
@@ -31,6 +31,28 @@ class RequestTest < Test::Unit::TestCase
     @request.port = 8080
     assert_equal ":8080", @request.port_string
   end
+  
+  def test_request_uri
+    @request.set_REQUEST_URI "http://www.rubyonrails.org/path/of/some/uri?mapped=1"
+    assert_equal "/path/of/some/uri?mapped=1", @request.request_uri
+    assert_equal "/path/of/some/uri", @request.path
+    
+    @request.set_REQUEST_URI "http://www.rubyonrails.org/path/of/some/uri"
+    assert_equal "/path/of/some/uri", @request.request_uri
+    assert_equal "/path/of/some/uri", @request.path
+
+    @request.set_REQUEST_URI "/path/of/some/uri"
+    assert_equal "/path/of/some/uri", @request.request_uri
+    assert_equal "/path/of/some/uri", @request.path
+
+    @request.set_REQUEST_URI "/"
+    assert_equal "/", @request.request_uri
+    assert_equal "/", @request.path
+
+    @request.set_REQUEST_URI "/?m=b"
+    assert_equal "/?m=b", @request.request_uri
+    assert_equal "/", @request.path
+  end
 
   def test_host_with_port
     @request.env['HTTP_HOST'] = "rubyonrails.org:8080"
diff --git a/actionpack/test/controller/routing_tests.rb b/actionpack/test/controller/routing_tests.rb
new file mode 100644
index 0000000000..cdc9c4e53c
--- /dev/null
+++ b/actionpack/test/controller/routing_tests.rb
@@ -0,0 +1,409 @@
+# Code Generated by ZenTest v. 2.3.0
+# Couldn't find class for name Routing
+#                 classname: asrt / meth =  ratio%
+# ActionController::Routing::RouteSet:    0 /   16 =   0.00%
+# ActionController::Routing::RailsRoute:    0 /    4 =   0.00%
+# ActionController::Routing::Route:    0 /    8 =   0.00%
+
+RAILS_ROOT = ""
+require File.dirname(__FILE__) + '/../abstract_unit'
+require 'test/unit'
+require 'cgi'
+
+class FakeController
+  attr_reader :controller_path
+  attr_reader :name
+  def initialize(name, controller_path)
+    @name = name
+    @controller_path = controller_path
+  end
+  def kind_of?(x)
+    x === Class || x == FakeController
+  end
+end
+
+module Controllers
+  module Admin
+    UserController = FakeController.new 'Admin::UserController', 'admin/user'
+    AccessController = FakeController.new 'Admin::AccessController', 'admin/access'
+  end
+  module Editing
+    PageController = FakeController.new 'Editing::PageController', 'editing/page'
+    ImageController = FakeController.new 'Editing::ImageController', 'editing/image'
+  end
+  module User
+    NewsController = FakeController.new 'User::NewsController', 'user/news'
+    PaymentController = FakeController.new 'User::PaymentController', 'user/payment'
+  end
+  ContentController = FakeController.new 'ContentController', 'content'
+  ResourceController = FakeController.new 'ResourceController', 'resource'
+end
+
+# Extend the modules with the required methods...
+[Controllers, Controllers::Admin, Controllers::Editing, Controllers::User].each do |mod|
+  mod.instance_eval('alias :const_available? :const_defined?')
+  mod.constants.each {|k| Object.const_set(k, mod.const_get(k))} # export the modules & controller classes.
+end
+  
+
+class RouteTests < Test::Unit::TestCase
+  def route(*args)
+    return @route if @route && (args.empty? || @args == args)
+    @args = args
+    @route = ActionController::Routing::Route.new(*args)
+    return @route
+  end
+
+  def setup
+    self.route '/:controller/:action/:id'
+    @defaults = {:controller => 'content', :action => 'show', :id => '314'}
+  end
+  
+  # Don't put a leading / on the url.
+  # Make sure the controller is one from the above fake Controllers module.
+  def verify_recognize(url, expected_options, reason='')
+    url = url.split('/') if url.kind_of? String
+    reason = ": #{reason}" unless reason.empty?
+    controller_class, options = @route.recognize(url)
+    assert_not_equal nil, controller_class, "#{@route.inspect} didn't recognize #{url}#{reason}\n   #{options}"
+    assert_equal expected_options, options, "#{@route.inspect} produced wrong options for #{url}#{reason}"
+  end
+  
+  # The expected url should not have a leading /
+  # You can use @defaults if you want a set of plausible defaults
+  def verify_generate(expected_url, expected_extras, options, defaults, reason='')
+    reason = "#{reason}: " unless reason.empty?
+    components, extras = @route.generate(options, defaults)
+    assert_not_equal nil, components, "#{reason}#{@route.inspect} didn't generate for \n   options = #{options.inspect}\n   defaults = #{defaults.inspect}\n   #{extras}"
+    assert_equal expected_extras, extras, "#{reason} #{@route.inspect}.generate: incorrect extra's"
+    assert_equal expected_url, components.join('/'), "#{reason} #{@route.inspect}.generate: incorrect url"
+  end
+  
+  def test_recognize_default_unnested_with_action_and_id
+    verify_recognize('content/action/id', {:controller => 'content', :action => 'action', :id => 'id'})
+    verify_recognize('content/show/10', {:controller => 'content', :action => 'show', :id => '10'})
+  end
+  def test_generate_default_unnested_with_action_and_id_no_extras
+    verify_generate('content/action/id', {}, {:controller => 'content', :action => 'action', :id => 'id'}, @defaults)
+    verify_generate('content/show/10', {}, {:controller => 'content', :action => 'show', :id => '10'}, @defaults)
+  end
+  def test_generate_default_unnested_with_action_and_id
+    verify_generate('content/action/id', {:a => 'a'}, {:controller => 'content', :action => 'action', :id => 'id', :a => 'a'}, @defaults)
+    verify_generate('content/show/10', {:a => 'a'}, {:controller => 'content', :action => 'show', :id => '10', :a => 'a'}, @defaults)
+  end
+  
+  # Note that we can't put tests here for proper relative controller handline
+  # because that is handled by RouteSet.
+  def test_recognize_default_nested_with_action_and_id
+    verify_recognize('admin/user/action/id', {:controller => 'admin/user', :action => 'action', :id => 'id'})
+    verify_recognize('admin/user/show/10', {:controller => 'admin/user', :action => 'show', :id => '10'})
+  end
+  def test_generate_default_nested_with_action_and_id_no_extras
+    verify_generate('admin/user/action/id', {}, {:controller => 'admin/user', :action => 'action', :id => 'id'}, @defaults)
+    verify_generate('admin/user/show/10', {}, {:controller => 'admin/user', :action => 'show', :id => '10'}, @defaults)
+  end
+  def test_generate_default_nested_with_action_and_id_relative_to_root
+    verify_generate('admin/user/action/id', {:a => 'a'}, {:controller => 'admin/user', :action => 'action', :id => 'id', :a => 'a'}, @defaults)
+    verify_generate('admin/user/show/10', {:a => 'a'}, {:controller => 'admin/user', :action => 'show', :id => '10', :a => 'a'}, @defaults)
+  end
+  
+  def test_recognize_default_nested_with_action
+    verify_recognize('admin/user/action', {:controller => 'admin/user', :action => 'action'})
+    verify_recognize('admin/user/show', {:controller => 'admin/user', :action => 'show'})
+  end
+  def test_generate_default_nested_with_action_no_extras
+    verify_generate('admin/user/action', {}, {:controller => 'admin/user', :action => 'action'}, @defaults)
+    verify_generate('admin/user/show', {}, {:controller => 'admin/user', :action => 'show'}, @defaults)
+  end
+  def test_generate_default_nested_with_action
+    verify_generate('admin/user/action', {:a => 'a'}, {:controller => 'admin/user', :action => 'action', :a => 'a'}, @defaults)
+    verify_generate('admin/user/show', {:a => 'a'}, {:controller => 'admin/user', :action => 'show', :a => 'a'}, @defaults)
+  end
+
+  def test_recognize_default_nested_with_id_and_index
+    verify_recognize('admin/user/index/hello', {:controller => 'admin/user', :id => 'hello', :action => 'index'})
+    verify_recognize('admin/user/index/10', {:controller => 'admin/user', :id => "10", :action => 'index'})
+  end
+  def test_generate_default_nested_with_id_no_extras
+    verify_generate('admin/user/index/hello', {}, {:controller => 'admin/user', :id => 'hello'}, @defaults)
+    verify_generate('admin/user/index/10', {}, {:controller => 'admin/user', :id => 10}, @defaults)
+  end
+  def test_generate_default_nested_with_id
+    verify_generate('admin/user/index/hello', {:a => 'a'}, {:controller => 'admin/user', :id => 'hello', :a => 'a'}, @defaults)
+    verify_generate('admin/user/index/10', {:a => 'a'}, {:controller => 'admin/user', :id => 10, :a => 'a'}, @defaults)
+  end
+  
+  def test_recognize_default_nested
+    verify_recognize('admin/user', {:controller => 'admin/user', :action => 'index'})
+    verify_recognize('admin/user', {:controller => 'admin/user', :action => 'index'})
+  end
+  def test_generate_default_nested_no_extras
+    verify_generate('admin/user/', {}, {:controller => 'admin/user'}, @defaults)
+    verify_generate('admin/user/', {}, {:controller => 'admin/user'}, @defaults)
+  end
+  def test_generate_default_nested
+    verify_generate('admin/user/', {:a => 'a'}, {:controller => 'admin/user', :a => 'a'}, @defaults)
+    verify_generate('admin/user/', {:a => 'a'}, {:controller => 'admin/user', :a => 'a'}, @defaults)
+  end
+  
+  # Test generate with a default controller set.
+  def test_generate_default_controller
+    route '/:controller/:action/:id', :action => 'index', :id => nil, :controller => 'content'
+    @defaults[:controller] = 'resource'
+    
+    verify_generate('', {}, {:controller => 'content'}, @defaults)
+    verify_generate('', {}, {:controller => 'content', :action => 'index'}, @defaults)
+    verify_generate('content/not-index', {}, {:controller => 'content', :action => 'not-index'}, @defaults)
+    verify_generate('content/index/10', {}, {:controller => 'content', :id => 10}, @defaults)
+    verify_generate('content/index/hi', {}, {:controller => 'content', :action => 'index', :id => 'hi'}, @defaults)
+    verify_generate('', {:a => 'a'}, {:controller => 'content', :a => 'a'}, @defaults)
+    verify_generate('', {:a => 'a'}, {:controller => 'content', :a => 'a'}, @defaults)
+    
+    # Call some other generator tests
+    test_generate_default_unnested_with_action_and_id
+    test_generate_default_nested_with_action_and_id_no_extras
+    test_generate_default_nested_with_id
+    test_generate_default_nested_with_id_no_extras
+  end
+
+  # Test generate with a default controller set.
+  def test_generate_default_controller
+    route '/:controller/:action/:id', :action => 'index', :id => nil, :controller => 'content'
+    @defaults[:controller] = 'resource'
+    verify_recognize('', {:controller => 'content', :action => 'index'})
+    verify_recognize('content', {:controller => 'content', :action => 'index'})
+    verify_recognize('content/index', {:controller => 'content', :action => 'index'})
+    verify_recognize('content/index/10', {:controller => 'content', :action => 'index', :id => '10'})
+  end
+    # Make sure generation & recognition don't happen in some cases:
+  def test_no_generate_on_no_options
+    assert_equal nil, @route.generate({}, {})[0]
+  end
+  def test_requirements
+    route 'some_static/route', :controller => 'content'
+    assert_equal nil, @route.generate({}, {})[0]
+    assert_equal nil, @route.generate({:controller => "dog"}, {})[0]
+    assert_equal nil, @route.recognize([])[0]
+    assert_equal nil, @route.recognize(%w{some_static route with more than expected})[0]
+  end
+
+  def test_basecamp
+    route 'clients/', :controller => 'content'
+    verify_generate('clients', {}, {:controller => 'content'}, {}) # Would like to have clients/
+    verify_generate('clients', {}, {:controller => 'content'}, @defaults)
+  end
+
+  def test_basecamp2
+    route 'clients/:client_name/:project_name/', :controller => 'content', :action => 'start_page_redirect'
+    verify_recognize('clients/projects/2', {:controller => 'content', :client_name => 'projects', :project_name => '2', :action => 'start_page_redirect'})
+  end
+  
+  def test_xal_style_dates
+    route 'articles/:category/:year/:month/:day', :controller => 'content', :action => 'list_articles', :category => 'all', :year => nil, :month => nil, :day =>nil
+    verify_recognize('articles', {:controller => 'content', :action => 'list_articles', :category => 'all'})
+    verify_recognize('articles/porn', {:controller => 'content', :action => 'list_articles', :category => 'porn'})
+    verify_recognize('articles/news/2005/08', {:controller => 'content', :action => 'list_articles', :category => 'news', :year => '2005', :month => '08'})
+    verify_recognize('articles/news/2005/08/04', {:controller => 'content', :action => 'list_articles', :category => 'news', :year => '2005', :month => '08', :day => '04'})
+    assert_equal nil, @route.recognize(%w{articles too many components are here})[0]
+    assert_equal nil, @route.recognize('')[0]
+    
+    verify_generate('articles', {}, {:controller => 'content', :action => 'list_articles'}, @defaults)
+    verify_generate('articles', {}, {:controller => 'content', :action => 'list_articles', :category => 'all'}, @defaults)
+    verify_generate('articles/news', {}, {:controller => 'content', :action => 'list_articles', :category => 'news'}, @defaults)
+    verify_generate('articles/news/2005', {}, {:controller => 'content', :action => 'list_articles', :category => 'news', :year => '2005'}, @defaults)
+    verify_generate('articles/news/2005/05', {}, {:controller => 'content', :action => 'list_articles', :category => 'news', :year => '2005', :month => '05'}, @defaults)
+    verify_generate('articles/news/2005/05/16', {}, {:controller => 'content', :action => 'list_articles', :category => 'news', :year => '2005', :month => '05', :day => '16'}, @defaults)
+
+    assert_equal nil, @route.generate({:controller => 'content', :action => 'list_articles', :day => '2'}, @defaults)[0]
+    # The above case should fail because a nil value cannot be present in a path.
+    # In other words, since :day is given, :month and :year must be given too.
+  end
+  
+  
+  def test_no_controller
+    route 'some/:special/:route', :controller => 'a/missing/controller', :action => 'anything'
+    assert_raises(ActionController::RoutingError, "Should raise due to nonexistant controller") {@route.recognize(%w{some matching path})}
+  end
+  def test_bad_controller_path
+    assert_equal nil, @route.recognize(%w{no such controller fake_action id})[0]
+  end
+  def test_too_short_path
+    assert_equal nil, @route.recognize([])[0]
+    route 'some/static/route', :controller => 'content', :action => 'show'
+    assert_equal nil, route.recognize([])[0]
+  end
+  def test_too_long_path
+    assert_equal nil, @route.recognize(%w{content action id some extra components})[0]
+  end
+  def test_incorrect_static_component
+    route 'some/static/route', :controller => 'content', :action => 'show'
+    assert_equal nil, route.recognize(%w{an non_matching path})[0]
+  end
+  def test_no_controller_defined
+    route 'some/:path/:without/a/controller'
+    assert_equal nil, route.recognize(%w{some matching path a controller})[0]
+  end
+  
+  def test_mismatching_requirements
+    route 'some/path', :controller => 'content', :action => 'fish'
+    assert_equal nil, route.generate({:controller => 'admin/user', :action => 'list'})[0]
+    assert_equal nil, route.generate({:controller => 'content', :action => 'list'})[0]
+    assert_equal nil, route.generate({:controller => 'admin/user', :action => 'fish'})[0]
+  end
+  
+  def test_missing_value_for_generate
+    assert_equal nil, route.generate({})[0] # :controller is missing
+  end
+  def test_nils_inside_generated_path
+    route 'show/:year/:month/:day', :month => nil, :day => nil, :controller => 'content', :action => 'by_date'
+    assert_equal nil, route.generate({:year => 2005, :day => 10})[0]
+  end
+  
+  def test_expand_controller_path_non_nested_no_leftover
+    controller, leftovers = @route.send :eat_path_to_controller, %w{content}
+    assert_equal Controllers::ContentController, controller
+    assert_equal [], leftovers
+  end
+  def test_expand_controller_path_non_nested_with_leftover
+    controller, leftovers = @route.send :eat_path_to_controller, %w{content action id}
+    assert_equal Controllers::ContentController, controller
+    assert_equal %w{action id}, leftovers
+  end
+  def test_expand_controller_path_nested_no_leftover
+    controller, leftovers = @route.send :eat_path_to_controller, %w{admin user}
+    assert_equal Controllers::Admin::UserController, controller
+    assert_equal [], leftovers
+  end
+  def test_expand_controller_path_nested_no_leftover
+    controller, leftovers = @route.send :eat_path_to_controller, %w{admin user action id}
+    assert_equal Controllers::Admin::UserController, controller
+    assert_equal %w{action id}, leftovers
+  end
+end
+
+class RouteSetTests < Test::Unit::TestCase
+  def setup
+    @set = ActionController::Routing::RouteSet.new
+    @rails_route = ActionController::Routing::Route.new '/:controller/:action/:id', :action => 'index', :id => nil
+    @request = ActionController::TestRequest.new({}, {}, nil)
+  end
+  def test_emptyness
+    assert_equal true, @set.empty?, "New RouteSets should respond to empty? with true."
+    @set.each { flunk "New RouteSets should be empty." }
+  end
+  def test_add_illegal_route
+    assert_raises(TypeError) {@set.add_route "I'm not actually a route."}
+  end
+  def test_add_normal_route
+    @set.add_route @rails_route
+    seen = false
+    @set.each do |route|
+      assert_equal @rails_route, route
+      flunk("Each should have yielded only a single route!") if seen
+      seen = true
+    end
+  end
+  
+  def test_expand_controller_path_non_relative
+    defaults = {:controller => 'admin/user', :action => 'list'}
+    options = {:controller => '/content'}
+    @set.expand_controller_path!(options, defaults)
+    assert_equal({:controller => 'content'}, options)
+  end
+  def test_expand_controller_path_relative_to_nested
+    defaults = {:controller => 'admin/user', :action => 'list'}
+    options = {:controller => 'access'}
+    @set.expand_controller_path!(options, defaults)
+    assert_equal({:controller => 'admin/access'}, options)
+  end
+  def test_expand_controller_path_relative_to_root
+    defaults = {:controller => 'content', :action => 'list'}
+    options = {:controller => 'resource'}
+    @set.expand_controller_path!(options, defaults)
+    assert_equal({:controller => 'resource'}, options)
+  end
+  def test_expand_controller_path_into_module
+    defaults = {:controller => 'content', :action => 'list'}
+    options = {:controller => 'admin/user'}
+    @set.expand_controller_path!(options, defaults)
+    assert_equal({:controller => 'admin/user'}, options)
+  end
+  def test_expand_controller_path_switch_module_with_absolute
+    defaults = {:controller => 'user/news', :action => 'list'}
+    options = {:controller => '/admin/user'}
+    @set.expand_controller_path!(options, defaults)
+    assert_equal({:controller => 'admin/user'}, options)
+  end
+  def test_expand_controller_no_default
+    options = {:controller => 'content'}
+    @set.expand_controller_path!(options, {})
+    assert_equal({:controller => 'content'}, options)
+  end
+  
+  # Don't put a leading / on the url.
+  # Make sure the controller is one from the above fake Controllers module.
+  def verify_recognize(expected_controller, expected_path_parameters=nil, path=nil)
+    @set.add_route(@rails_route) if @set.empty?
+    @request.path = path if path
+    controller = @set.recognize!(@request)
+    assert_equal expected_controller, controller
+    assert_equal expected_path_parameters, @request.path_parameters if expected_path_parameters
+  end
+  
+  # The expected url should not have a leading /
+  # You can use @defaults if you want a set of plausible defaults
+  def verify_generate(expected_url, options, expected_extras={})
+    @set.add_route(@rails_route) if @set.empty?
+    components, extras = @set.generate(options, @request)
+    assert_equal expected_extras, extras, "#incorrect extra's"
+    assert_equal expected_url, components.join('/'), "incorrect url"
+  end
+  def typical_request
+    @request.path_parameters = {:controller => 'content', :action => 'show', :id => '10'}
+  end
+  def typical_nested_request
+    @request.path_parameters = {:controller => 'admin/user', :action => 'grant', :id => '02seckar'}
+  end
+  
+  def test_generate_typical_controller_action_path
+    typical_request
+    verify_generate('content/list', {:controller => 'content', :action => 'list'})
+  end
+  def test_generate_typical_controller_index_path_explicit_index
+    typical_request
+    verify_generate('content/', {:controller => 'content', :action => 'index'})
+  end
+  def test_generate_typical_controller_index_path_explicit_index
+    typical_request
+    verify_generate('content/', {:controller => 'content', :action => 'index'})
+  end
+  def test_generate_typical_controller_index_path_implicit_index
+    typical_request
+    @request.path_parameters[:controller] = 'resource'
+    verify_generate('content/', {:controller => 'content'})
+  end
+  
+  def test_generate_no_perfect_route
+    typical_request
+    verify_generate('admin/user/show/43seckar', {:controller => 'admin/user', :action => 'show', :id => '43seckar', :likes_fishing => 'fuzzy(0.3)'}, {:likes_fishing => 'fuzzy(0.3)'})
+  end
+  
+  def test_generate_no_match
+    @set.add_route(@rails_route)
+    @request.path_parameters = {}
+    assert_raises(ActionController::RoutingError) {@set.generate({}, @request)}
+  end
+  
+  
+  def test_encoded_strings
+    verify_recognize(Controllers::Admin::UserController, {:controller => 'admin/user', :action => 'info', :id => "Nicholas Seckar"}, path='/admin/user/info/Nicholas%20Seckar')
+  end
+end
+
+#require '../assertions/action_pack_assertions.rb'
+class AssertionRoutingTests < Test::Unit::TestCase
+  def test_assert_routing
+    ActionController::Routing::Routes.reload rescue nil
+    assert_routing('content/', {:controller => 'content', :action => 'index'})
+  end
+end
diff --git a/actionpack/test/controller/url_obsolete.rb b/actionpack/test/controller/url_obsolete.rb
new file mode 100644
index 0000000000..4b6544dbf7
--- /dev/null
+++ b/actionpack/test/controller/url_obsolete.rb
@@ -0,0 +1,487 @@
+require File.dirname(__FILE__) + '/../abstract_unit'
+require 'action_controller/url_rewriter'
+
+MockRequest = Struct.new("MockRequest", :protocol, :host, :port, :path, :parameters, :path_parameters)
+class MockRequest
+  def host_with_port
+    if (protocol == "http://" && port == 80) || (protocol == "https://" && port == 443)
+      host
+    else
+      host + ":#{port}"
+    end
+  end
+end
+
+class UrlMockFactory
+  def self.create(path, parameters)
+    ActionController::UrlRewriter.new(
+      MockRequest.new("http://", "example.com", 80, path, parameters), 
+      parameters
+    )
+  end
+end
+
+# old-style support for .new
+module ActionController
+  class UrlRewriter
+    def self.old_new(request, controller, action)
+      request.parameters[:controller] = controller
+      request.parameters[:action] = action
+      return new(request, request.parameters)
+    end
+  end
+end
+class UrlTest < Test::Unit::TestCase
+  def setup
+    @library_url = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://",
+      "www.singlefile.com", 
+      80,
+      "/library/books/ISBN/0743536703/show",
+      { "type" => "ISBN", "code" => "0743536703" }
+    ), "books", "show")
+
+    @library_url_using_module = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://",
+      "www.singlefile.com", 
+      80,
+      "/library/books/ISBN/0743536703/show",
+      { "type" => "ISBN", "code" => "0743536703", "module" => "library" }
+    ), "books", "show")
+
+    @library_url_on_index = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://",
+      "www.singlefile.com", 
+      80,
+      "/library/books/ISBN/0743536703/", 
+      { "type" => "ISBN", "code" => "0743536703" }
+    ), "books", "index")
+    
+    @clean_urls = [
+      ActionController::UrlRewriter.old_new(MockRequest.new(
+        "http://", "www.singlefile.com", 80, "/identity/", {}
+      ), "identity", "index"),
+      ActionController::UrlRewriter.old_new(MockRequest.new(
+        "http://", "www.singlefile.com", 80, "/identity", {}
+      ), "identity", "index")
+    ]
+
+    @clean_url_with_id = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://", "www.singlefile.com", 80, "/identity/show/5", { "id" => "5" }
+    ), "identity", "show")
+
+    @clean_url_with_same_action_and_controller_name = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://", "www.singlefile.com", 80, "/login/login", {  }
+    ), "login", "login")
+
+    @clean_url_with_same_action_and_controller_and_module_name = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://", "www.singlefile.com", 80, "/login/login/login", { "module" => "login" }
+    ), "login", "login")
+
+    @clean_url_with_id_as_char = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://", "www.singlefile.com", 80, "/teachers/show/t", { "id" => "t" }
+    ), "teachers", "show")
+  end
+
+  def test_clean_action
+    assert_equal "http://www.singlefile.com/library/books/ISBN/0743536703/edit", @library_url.rewrite(:action => "edit")
+  end
+
+  def test_clean_action_to_another_host
+    assert_equal(
+      "http://www.booksphere.com/library/books/ISBN/0743536703/edit", 
+      @library_url.rewrite(:action => "edit", :host => "www.booksphere.com")
+    )
+  end
+
+  def test_clean_action_to_another_host_and_protocol
+    assert_equal(
+      "https://www.booksphere.com/library/books/ISBN/0743536703/edit", 
+      @library_url.rewrite(:action => "edit", :host => "www.booksphere.com", :protocol => "https://")
+    )
+  end
+
+  def test_clean_action_with_only_path
+    assert_equal "/library/books/ISBN/0743536703/edit", @library_url.rewrite(:action => "edit", :only_path => true)
+  end
+
+  def test_action_from_index
+    assert_equal "http://www.singlefile.com/library/books/ISBN/0743536703/edit", @library_url_on_index.rewrite(:action => "edit")
+  end
+
+  def test_action_from_index_on_clean
+    @clean_urls.each do |url|
+      assert_equal "http://www.singlefile.com/identity/edit", url.rewrite(:action => "edit")
+    end
+  end
+
+  def test_action_without_prefix
+    assert_equal "http://www.singlefile.com/library/books/", @library_url.rewrite(:action => "index", :action_prefix => "")
+  end
+
+  def test_action_with_prefix
+    assert_equal(
+      "http://www.singlefile.com/library/books/XTC/123/show", 
+      @library_url.rewrite(:action => "show", :action_prefix => "XTC/123")
+    )
+  end
+
+  def test_action_prefix_alone
+    assert_equal(
+      "http://www.singlefile.com/library/books/XTC/123/",
+      @library_url.rewrite(:action_prefix => "XTC/123")
+    )
+  end
+
+  def test_action_with_suffix
+    assert_equal(
+      "http://www.singlefile.com/library/books/show/XTC/123",
+      @library_url.rewrite(:action => "show", :action_prefix => "", :action_suffix => "XTC/123")
+    )
+  end
+
+  def test_clean_controller
+    assert_equal "http://www.singlefile.com/library/settings/", @library_url.rewrite(:controller => "settings")
+  end
+
+  def test_clean_controller_prefix
+    assert_equal "http://www.singlefile.com/shop/", @library_url.rewrite(:controller_prefix => "shop")
+  end
+
+  def test_clean_controller_with_module
+    assert_equal "http://www.singlefile.com/shop/purchases/", @library_url.rewrite(:module => "shop", :controller => "purchases")
+  end
+  
+  def test_getting_out_of_a_module
+    assert_equal "http://www.singlefile.com/purchases/", @library_url_using_module.rewrite(:module => false, :controller => "purchases")
+  end
+
+  def test_controller_and_action
+    assert_equal "http://www.singlefile.com/library/settings/show", @library_url.rewrite(:controller => "settings", :action => "show")
+  end
+
+  def test_controller_and_action_and_anchor
+    assert_equal(
+      "http://www.singlefile.com/library/settings/show#5", 
+      @library_url.rewrite(:controller => "settings", :action => "show", :anchor => "5")
+    )
+  end
+
+  def test_controller_and_action_and_empty_overwrite_params_and_anchor
+    assert_equal(
+      "http://www.singlefile.com/library/settings/show?code=0743536703&type=ISBN#5", 
+      @library_url.rewrite(:controller => "settings", :action => "show", :overwrite_params => {},  :anchor => "5")
+    )
+  end
+  
+  def test_controller_and_action_and_overwrite_params_and_anchor
+    assert_equal(
+      "http://www.singlefile.com/library/settings/show?code=0000001&type=ISBN#5", 
+      @library_url.rewrite(:controller => "settings", :action => "show", :overwrite_params => {"code"=>"0000001"},  :anchor => "5")
+    )
+  end
+
+  def test_controller_and_action_and_overwrite_params_with_nil_value_and_anchor
+    assert_equal(
+      "http://www.singlefile.com/library/settings/show?type=ISBN#5", 
+      @library_url.rewrite(:controller => "settings", :action => "show", :overwrite_params => {"code" => nil},  :anchor => "5")
+    )
+  end
+
+  def test_controller_and_action_params_and_overwrite_params_and_anchor
+    assert_equal(
+      "http://www.singlefile.com/library/settings/show?code=0000001&version=5.0#5", 
+      @library_url.rewrite(:controller => "settings", :action => "show", :params=>{"version" => "5.0"},  :overwrite_params => {"code"=>"0000001"},  :anchor => "5")
+    )
+  end
+
+  def test_controller_and_action_and_params_anchor
+    assert_equal(
+      "http://www.singlefile.com/library/settings/show?update=1#5", 
+      @library_url.rewrite(:controller => "settings", :action => "show", :params => { "update" => "1"}, :anchor => "5")
+    )
+  end
+
+  def test_controller_and_index_action
+    assert_equal "http://www.singlefile.com/library/settings/", @library_url.rewrite(:controller => "settings", :action => "index")
+  end
+
+  def test_same_controller_and_action_names
+    assert_equal "http://www.singlefile.com/login/logout", @clean_url_with_same_action_and_controller_name.rewrite(:action => "logout")
+  end
+
+  def xtest_same_module_and_controller_and_action_names
+    assert_equal "http://www.singlefile.com/login/login/logout", @clean_url_with_same_action_and_controller_and_module_name.rewrite(:action => "logout")
+  end
+
+  def test_controller_and_action_with_same_name_as_controller
+    @clean_urls.each do |url|
+      assert_equal "http://www.singlefile.com/anything/identity", url.rewrite(:controller => "anything", :action => "identity")
+    end
+  end
+
+  def test_controller_and_index_action_without_controller_prefix
+    assert_equal(
+      "http://www.singlefile.com/settings/", 
+      @library_url.rewrite(:controller => "settings", :action => "index", :controller_prefix => "")
+    )
+  end
+
+  def test_controller_and_index_action_with_controller_prefix
+    assert_equal(
+      "http://www.singlefile.com/fantastic/settings/show", 
+      @library_url.rewrite(:controller => "settings", :action => "show", :controller_prefix => "fantastic")
+    )
+  end
+
+  def test_path_parameters
+    assert_equal "http://www.singlefile.com/library/books/EXBC/0743536703/show", @library_url.rewrite(:path_params => {"type" => "EXBC"})
+  end
+  
+  def test_parameters
+    assert_equal(
+      "http://www.singlefile.com/library/books/ISBN/0743536703/show?delete=1&name=David", 
+      @library_url.rewrite(:params => {"delete" => "1", "name" => "David"})
+    )
+  end
+
+  def test_parameters_with_id
+    @clean_urls.each do |url|
+      assert_equal(
+        "http://www.singlefile.com/identity/show?name=David&id=5", 
+        url.rewrite(
+          :action => "show",
+          :params => { "id" => "5", "name" => "David" }
+        )
+      )
+    end
+  end
+
+  def test_parameters_with_array
+    @clean_urls.each do |url|
+      assert_equal(
+        "http://www.singlefile.com/identity/show?id[]=3&id[]=5&id[]=10",
+	url.rewrite(
+		:action => "show",
+		:params => { 'id' => [ 3, 5, 10 ] } )
+      )
+    end
+  end
+
+  def test_action_with_id
+   assert_equal(
+      "http://www.singlefile.com/identity/show/7", 
+      @clean_url_with_id.rewrite(
+        :action => "show", 
+        :id => 7
+      )
+    )
+    @clean_urls.each do |url|
+      assert_equal(
+        "http://www.singlefile.com/identity/index/7", 
+        url.rewrite(:id => 7)
+      )
+    end
+  end
+
+  def test_parameters_with_id_and_away
+    assert_equal(
+      "http://www.singlefile.com/identity/show/25?name=David", 
+      @clean_url_with_id.rewrite(
+        :path_params => { "id" => "25" },
+        :params => { "name" => "David" }
+      )
+    )
+  end
+
+  def test_parameters_with_index_and_id
+    @clean_urls.each do |url|
+      assert_equal(
+        "http://www.singlefile.com/identity/index/25?name=David", 
+        url.rewrite(
+          :path_params => { "id" => "25" },
+          :params => { "name" => "David" }
+        )
+      )
+    end
+  end
+
+  def test_action_going_away_from_id
+    assert_equal(
+      "http://www.singlefile.com/identity/list", 
+      @clean_url_with_id.rewrite(
+        :action => "list"
+      )
+    )
+  end
+
+  def test_parameters_with_direct_id_and_away
+    assert_equal(
+      "http://www.singlefile.com/identity/show/25?name=David", 
+      @clean_url_with_id.rewrite(
+        :id => "25",
+        :params => { "name" => "David" }
+      )
+    )
+  end
+
+  def test_parameters_with_direct_id_and_away
+    assert_equal(
+      "http://www.singlefile.com/store/open/25?name=David", 
+      @clean_url_with_id.rewrite(
+        :controller => "store",
+        :action => "open",
+        :id => "25",
+        :params => { "name" => "David" }
+      )
+    )
+  end
+
+  def test_parameters_to_id
+    @clean_urls.each do |url|
+      %w(show index).each do |action|
+        assert_equal(
+          "http://www.singlefile.com/identity/#{action}/25?name=David", 
+          url.rewrite(
+            :action => action,
+            :path_params => { "id" => "25" },
+            :params => { "name" => "David" }
+          )
+        )
+      end
+    end
+  end
+
+  def test_parameters_from_id
+    assert_equal(
+      "http://www.singlefile.com/identity/", 
+      @clean_url_with_id.rewrite(
+        :action => "index"
+      )
+    )
+  end
+  
+  def test_id_as_char_and_part_of_controller
+    assert_equal(
+      "http://www.singlefile.com/teachers/skill/5", 
+      @clean_url_with_id_as_char.rewrite(
+        :action => "skill",
+        :id => 5
+      )
+    )
+  end
+
+  def test_from_clean_to_library
+    @clean_urls.each do |url|
+      assert_equal(
+        "http://www.singlefile.com/library/books/ISBN/0743536703/show?delete=1&name=David", 
+        url.rewrite(
+          :controller_prefix => "library",
+          :controller => "books", 
+          :action_prefix => "ISBN/0743536703",
+          :action => "show", 
+          :params => { "delete" => "1", "name" => "David" }
+        )
+      )
+    end
+  end
+  
+  def test_from_library_to_clean
+    assert_equal(
+      "http://www.singlefile.com/identity/", 
+      @library_url.rewrite(
+        :controller => "identity", :controller_prefix => ""
+      )
+    )
+  end
+  
+  def test_from_another_port
+    @library_url = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://",
+      "www.singlefile.com", 
+      8080,
+      "/library/books/ISBN/0743536703/show", 
+      { "type" => "ISBN", "code" => "0743536703" }
+    ), "books", "show")
+
+    assert_equal(
+      "http://www.singlefile.com:8080/identity/", 
+      @library_url.rewrite(
+        :controller => "identity", :controller_prefix => ""
+      )
+    )
+  end
+  
+  def test_basecamp
+    basecamp_url = ActionController::UrlRewriter.old_new(MockRequest.new(
+      "http://",
+      "projects.basecamp", 
+      80,
+      "/clients/disarray/1/msg/transcripts/", 
+      {"category_name"=>"transcripts", "client_name"=>"disarray", "action"=>"index", "controller"=>"msg", "project_name"=>"1"}
+    ), "msg", "index")
+    
+    assert_equal(
+      "http://projects.basecamp/clients/disarray/1/msg/transcripts/1/comments", 
+      basecamp_url.rewrite(:action_prefix => "transcripts/1", :action => "comments")
+    )
+  end
+
+  def test_on_explicit_index_page # My index page is very modest, thank you...
+    url = ActionController::UrlRewriter.old_new(
+      MockRequest.new(
+        "http://", "example.com", 80, "/controller/index",
+        {"controller"=>"controller", "action"=>"index"}
+      ), "controller", "index"
+    )
+    assert_equal("http://example.com/controller/foo", url.rewrite(:action => 'foo'))
+  end
+
+  def test_rewriting_on_similar_fragments
+    url = UrlMockFactory.create("/advertisements/advert/", {"controller"=>"advert", "action"=>"index"})
+    assert_equal("http://example.com/advertisements/advert/news", url.rewrite(:action => 'news'))
+  end
+
+  def test_rewriting_on_similar_fragments_with_action_prefixes
+    url = UrlMockFactory.create(
+      "/clients/prall/1/msg/all/", 
+      { "category_name"=>"all", "client_name"=>"prall", "action"=>"index", "controller"=>"msg", "project_name"=>"1"}
+    )
+
+    assert_equal(
+      "http://example.com/clients/prall/1/msg/all/new", 
+      url.rewrite({ :controller => "msg", :action_prefix => "all", :action => "new" })
+    )
+
+    url = UrlMockFactory.create(
+      "/clients/prall/1/msg/all/", 
+      { "category_name"=>"all", "client_name"=>"prall", "action"=>"index", "controller"=>"msg", "project_name"=>"1"}
+    )
+
+    assert_equal(
+      "http://example.com/clients/prall/1/msg/allous/new", 
+      url.rewrite({ :controller => "msg", :action_prefix => "allous", :action => "new" })
+    )
+  end
+
+  def test_clean_application_prefix
+    assert_equal "http://www.singlefile.com/namespace/library/books/ISBN/0743536703/show",
+      @library_url.rewrite(:application_prefix => "/namespace")
+  end
+
+  def test_clean_application_prefix_with_controller_prefix
+    assert_equal "http://www.singlefile.com/namespace/shop/",
+      @library_url.rewrite(:application_prefix => "/namespace",
+                           :controller_prefix => "shop" )
+  end
+
+  def test_blank_application_prefix
+    assert_equal "http://www.singlefile.com/library/books/ISBN/0743536703/show",
+      @library_url.rewrite(:application_prefix => "")
+  end
+
+  def test_nil_application_prefix
+    assert_equal "http://www.singlefile.com/library/books/ISBN/0743536703/show",
+      @library_url.rewrite(:application_prefix => nil)
+  end
+end
diff --git a/actionpack/test/fixtures/fun/games/hello_world.rhtml b/actionpack/test/fixtures/fun/games/hello_world.rhtml
new file mode 100644
index 0000000000..1ebfbe2539
--- /dev/null
+++ b/actionpack/test/fixtures/fun/games/hello_world.rhtml
@@ -0,0 +1 @@
+Living in a nested world
\ No newline at end of file
diff --git a/actionpack/test/fixtures/helpers/fun/games_helper.rb b/actionpack/test/fixtures/helpers/fun/games_helper.rb
new file mode 100644
index 0000000000..bf60d9db0c
--- /dev/null
+++ b/actionpack/test/fixtures/helpers/fun/games_helper.rb
@@ -0,0 +1,3 @@
+module Fun::GamesHelper
+  def stratego() "Iz guuut!" end
+end
\ No newline at end of file