Did you already get that kind of error message :
ActionView::Template::Error (Devise could not find the `Warden::Proxy` instance on your request environment. Make sure that your application is loading Devise and Warden as expected and that the `Warden::Manager` middleware is present in your middleware stack.
Tryed many things but still under trouble. I saw same cases talking about include
Devise::Test::ControllerHelpers inside my rails_helpers.rb but nothing change.