Mocking a Rails application object with mocha

Question

I'm writing a generator and I need to get mock a Rails.application object and get back the Rails.application.class.parent as the name of the Rails application.

def test_model_with_application_namespace
  name = "Dummyapp"
  application = Rails.stubs(:application).class.parent.returns(name)
  run_generator ["file", "--namespaced"]
  assert_file "app/models/myapp/file.rb", /class Dummyapp::File < ActiveRecord::Base/
end

This is what I have so far for my test.

Answer 1

You need the object retured by Rails.application.class to be a mock that responds to parent and returns name. Right now, you just stub out application. You need parent, class, and application to be mocks. There is probably a cleaner way of doing it, but I think this will do what you want:

 application = Rails.stubs(:application).returns(mock(:class => mock(:parent => name)))