1 files changed, 14 insertions, 0 deletions
diff --git a/actionview/lib/action_view/test_case.rb b/actionview/lib/action_view/test_case.rb
index 8542978e34..6913c31a20 100644
--- a/actionview/lib/action_view/test_case.rb
+++ b/actionview/lib/action_view/test_case.rb
@@ -103,6 +103,7 @@ module ActionView
       def setup_with_controller
         @controller = ActionView::TestCase::TestController.new
         @request = @controller.request
+        @view_flow = ActionView::OutputFlow.new
         # empty string ensures buffer has UTF-8 encoding as
         # new without arguments returns ASCII-8BIT encoded buffer like String#new
         @output_buffer = ActiveSupport::SafeBuffer.new ""
@@ -246,6 +247,7 @@ module ActionView
         :@test_passed,
         :@view,
         :@view_context_class,
+        :@view_flow,
         :@_subscribers,
         :@html_document
       ]
@@ -279,6 +281,18 @@ module ActionView
           super
         end
       end
+
+      def respond_to_missing?(name, include_private = false)
+        begin
+          routes = @controller.respond_to?(:_routes) && @controller._routes
+        rescue
+          # Dont call routes, if there is an error on _routes call
+        end
+
+        routes &&
+          (routes.named_routes.route_defined?(name) ||
+           routes.mounted_helpers.method_defined?(name))
+      end
     end
 
     include Behavior