Tests fail through rake

Hi! I have a strange problem. I have three controllers of same name EntitiesController. One is under rest/entities_controller.rb and is called Rest::EntitiesController, the other is under admin/ entities_controller.rb in module Admin::EntitiesController and the last one is in app/controllers/entities_controller.rb and is called EntitiesController When I execute tests separately, All is fine but when I do this:

rake test:functionals

Then the tests of app/controllers/entities_controller.rb fail. On investigation, it revealed that the tests of this controller are posting there requests to actually rest/entities_controller.rb. I thougth doing this require "#{RAILS_ROOT}/app/controllers/entities_controller.rb"

at the top of test/functional/entities_controller.rb would fix the problem but no gain.

What might be the problem? Please guide me in this regard.