Make `assert_recognizes` to traverse mounted engines

Before this commit paths of mounted engines are not traversed
when `assert_recognizes` is called, causing strange test results.
This commit enable to traverse mounted paths.

1 files changed, 2 insertions, 2 deletions

diff --git a/actionpack/lib/action_dispatch/routing/inspector.rb b/actionpack/lib/action_dispatch/routing/inspector.rb
index 5d30a545a2..4e859fbac3 100644
--- a/actionpack/lib/action_dispatch/routing/inspector.rb
+++ b/actionpack/lib/action_dispatch/routing/inspector.rb
@@ -13,7 +13,7 @@ module ActionDispatch
       end
 
       def rack_app
-        app.app
+        app.rack_app
       end
 
       def path
@@ -45,7 +45,7 @@ module ActionDispatch
       end
 
       def engine?
-        rack_app.respond_to?(:routes)
+        app.engine?
       end
     end