avoid testing only_path

we know that this call only wants the path returned, so lets call a
method that returns the path.

actionpack/lib/action_controller/test_case.rb

@@ -695,12 +695,11 @@ def build_request_uri(action, parameters)
         unless @request.env["PATH_INFO"]
           options = @controller.respond_to?(:url_options) ? @controller.__send__(:url_options).merge(parameters) : parameters
           options.update(
-            :only_path => true,
             :action => action,
             :relative_url_root => nil,
             :_recall => @request.path_parameters)
 
-          url, query_string = @routes.url_for(options).split("?", 2)
+          url, query_string = @routes.path_for(options).split("?", 2)
 
           @request.env["SCRIPT_NAME"] = @controller.config.relative_url_root
           @request.env["PATH_INFO"] = url

actionpack/lib/action_dispatch/routing/route_set.rb

@@ -697,6 +697,10 @@ def find_script_name(options)
         options.delete(:script_name) { '' }
       end
 
+      def path_for(options, route_name = nil) # :nodoc:
+        url_for(options, route_name, PATH)
+      end
+
       # The +options+ argument must be a hash whose keys are *symbols*.
       def url_for(options, route_name = nil, url_strategy = UNKNOWN)
         options = default_url_options.merge options