Solves a papercut in tests when you forget .json on an endpoint by raising a special exception.
Instead of doing this check at runtime, we can defined the error as a constant so that the check is only done.
Do you mean switching out the method body based on Rails.env.test?
I was thinking something like
ERROR_CLASS = Rails.env.test? ? ApplicationController::CheckXhrForTest : ApplicationController::RenderEmpty def check_xhr .... raise ERROR_CLASS.new end
Still failing a few tests that are dependent on the old behavior.