4 files changed, 25 insertions, 35 deletions
diff --git a/actionpack/lib/action_controller/test_case.rb b/actionpack/lib/action_controller/test_case.rb
index 64d9bdab2a..7e0a833dfa 100644
--- a/actionpack/lib/action_controller/test_case.rb
+++ b/actionpack/lib/action_controller/test_case.rb
@@ -322,6 +322,8 @@ module ActionController
         @controller ||= klass.new rescue nil
       end
 
+      @request.env.delete('PATH_INFO')
+
       if @controller
         @controller.request = @request
         @controller.params = {}
@@ -333,15 +335,19 @@ module ActionController
       @request.remote_addr = '208.77.188.166' # example.com
     end
 
-    private
-      def build_request_uri(action, parameters)
-        unless @request.env['REQUEST_URI']
-          options = @controller.__send__(:url_options).merge(parameters)
-          options.update(:only_path => true, :action => action)
+  private
+    def build_request_uri(action, parameters)
+      unless @request.env["PATH_INFO"]
+        options = @controller.__send__(:url_options).merge(parameters)
+        options.update(:only_path => true, :action => action, :relative_url_root => nil)
+        rewriter = ActionController::UrlRewriter.new(@request, parameters)
 
-          url = ActionController::UrlRewriter.new(@request, parameters)
-          @request.request_uri = url.rewrite(@router, options)
-        end
+        url, query_string = rewriter.rewrite(@router, options).split("?", 2)
+
+        @request.env["SCRIPT_NAME"] = @controller.config.relative_url_root
+        @request.env["PATH_INFO"] = url
+        @request.env["QUERY_STRING"] = query_string || ""
       end
+    end
   end
 end
diff --git a/actionpack/lib/action_dispatch/http/url.rb b/actionpack/lib/action_dispatch/http/url.rb
index 42ad19044d..e67d970a23 100644
--- a/actionpack/lib/action_dispatch/http/url.rb
+++ b/actionpack/lib/action_dispatch/http/url.rb
@@ -85,42 +85,23 @@ module ActionDispatch
         subdomains(tld_length).join('.')
       end
 
-      # Returns the query string, accounting for server idiosyncrasies.
+      # The query string must always be present
       def query_string
-        @env['QUERY_STRING'].present? ? @env['QUERY_STRING'] : (@env['REQUEST_URI'].to_s.split('?', 2)[1] || '')
+        @env['QUERY_STRING']
       end
 
       # Returns the request URI, accounting for server idiosyncrasies.
       # WEBrick includes the full URL. IIS leaves REQUEST_URI blank.
       def request_uri
-        if uri = @env['REQUEST_URI']
-          # Remove domain, which webrick puts into the request_uri.
-          (%r{^\w+\://[^/]+(/.*|$)$} =~ uri) ? $1 : uri
-        else
-          # Construct IIS missing REQUEST_URI from SCRIPT_NAME and PATH_INFO.
-          uri = @env['PATH_INFO'].to_s
-
-          if script_filename = @env['SCRIPT_NAME'].to_s.match(%r{[^/]+$})
-            uri = uri.sub(/#{script_filename}\//, '')
-          end
-
-          env_qs = @env['QUERY_STRING'].to_s
-          uri += "?#{env_qs}" unless env_qs.empty?
-
-          if uri.blank?
-            @env.delete('REQUEST_URI')
-          else
-            @env['REQUEST_URI'] = uri
-          end
-        end
+        uri = "#{@env["SCRIPT_NAME"]}#{@env["PATH_INFO"]}"
+        uri << "?#{@env["QUERY_STRING"]}" if @env["QUERY_STRING"].present?
+        uri
       end
 
       # Returns the interpreted \path to requested resource after all the installation
       # directory of this application was taken into account.
       def path
-        path = request_uri.to_s[/\A[^\?]*/]
-        path.sub!(/\A#{ActionController::Base.relative_url_root}/, '')
-        path
+        @env['PATH_INFO']
       end
 
     private
diff --git a/actionpack/lib/action_view/helpers/url_helper.rb b/actionpack/lib/action_view/helpers/url_helper.rb
index d9607c0095..148f2868e9 100644
--- a/actionpack/lib/action_view/helpers/url_helper.rb
+++ b/actionpack/lib/action_view/helpers/url_helper.rb
@@ -544,10 +544,11 @@ module ActionView
         # submitted url doesn't have any either.  This lets the function
         # work with things like ?order=asc
         if url_string.index("?")
-          request_uri = request.request_uri
+          request_uri = request.fullpath
         else
-          request_uri = request.request_uri.split('?').first
+          request_uri = request.path
         end
+
         if url_string =~ /^\w+:\/\//
           url_string == "#{request.protocol}#{request.host_with_port}#{request_uri}"
         else
diff --git a/actionpack/lib/action_view/test_case.rb b/actionpack/lib/action_view/test_case.rb
index f639700eaf..12142a3728 100644
--- a/actionpack/lib/action_view/test_case.rb
+++ b/actionpack/lib/action_view/test_case.rb
@@ -34,6 +34,8 @@ module ActionView
         @request = ActionController::TestRequest.new
         @response = ActionController::TestResponse.new
 
+        @request.env.delete('PATH_INFO')
+
         @params = {}
       end
     end