Merge pull request #21187 from arthurnn/method_missing_routes_av

Dont try to call method missing in routes if thats not what we want

actionview/lib/action_view/test_case.rb

@@ -263,9 +263,15 @@ def _routes
       end
 
       def method_missing(selector, *args)
-        if @controller.respond_to?(:_routes) &&
-          ( @controller._routes.named_routes.route_defined?(selector) ||
-            @controller._routes.mounted_helpers.method_defined?(selector) )
+        begin
+          routes = @controller.respond_to?(:_routes) && @controller._routes
+        rescue
+          # Dont call routes, if there is an error on _routes call
+        end
+
+        if routes &&
+           ( routes.named_routes.route_defined?(selector) ||
+             routes.mounted_helpers.method_defined?(selector) )
           @controller.__send__(selector, *args)
         else
           super