“Could not find a valid mapping for #” only on second and successive tests

Question

I\'m trying to write a request test that asserts that the proper links appear on the application layout depending in whether a user is logged in or out. FWIW, I\'m using Dev

Answer 1

Thanks to : http://blog.thefrontiergroup.com.au/2011/03/reloading-factory-girl-factories-in-the-rails-3-console/

"Devise uses a mapping between classes and routes, so when a factory built object comes through to Devise after a console reload, or a class redefinition then it will fail."

Put this in an initializer or application.rb

ActionDispatch::Callbacks.after do
  # Reload the factories
  return unless (Rails.env.development? || Rails.env.test?)

  unless FactoryGirl.factories.blank? # first init will load factories, this should only run on subsequent reloads
    FactoryGirl.factories.clear
    FactoryGirl.find_definitions
  end
end