Is there a way to undo Mocha stubbing of any_instance?

Question

Within my controller specs I am stubbing out valid? for some routing tests, (based on Ryan Bates nifty_scaffold) as follows :-

it "create action should render new template when model is invalid" do
  Company.any_instance.stubs(:valid?).returns(false)
  post :create
  response.should render_template(:new)
end

This is fine when I test the controllers in isolation. I also have the following in my model spec

it "is valid with valid attributes" do
  @company.should be_valid
end

Again this works fine when tested in isolation. The problem comes if I run spec for both models and controllers. The model test always fails as the valid? method has been stubbed out. Is there a way for me to remove the stubbing of any_instance when the controller test is torn down.

I have got around the problem by running the tests in reverse alphabetic sequence to ensure the model tests run before the controllers but I really don't like my tests being sequence dependant.

Janejanean

Answer 1

You need to manually configure RSpec.

Rspec.configure do |config|
  ...

  # == Mock Framework
  #
  # If you prefer to use mocha, flexmock or RR, uncomment the appropriate line:
  #
  config.mock_with :mocha
  # config.mock_with :flexmock
  # config.mock_with :rr
  # config.mock_with :rspec
end

Also, remember that Rspec provides its own methods to mock an object. Use the RSpec API or you won't be able to benefit from library abstraction. http://rspec.info/documentation/mocks/message_expectations.html

Tardiff

Although the solution is correct, the explanation is not. Mocha does not detect RSpec, but when the RSpec configuration is set as described, RSpec invokes Mocha at appropriate points. – Divorcee

Answer 2

I'm having the same issue but not using Rspec but normal Test::Unit, actually ActionController::TestCase.

The defined expectations are keeping alive among the tests.

Is there any clue how can I reset my expectations between tests?

• Ruby: 1.9.2
• Rails: 3.0.3
• Mocha: 0.9.10

Updated: I have solved this with the unstub Mocha method: http://mocha.rubyforge.org/classes/Mocha/ObjectMethods.html#M000009

Flats

Answer 3

Does your spec_helper contain

Spec::Runner.configure do |config|
  config.mock_with :mocha
end

With that rspec should tear down mocks between tests.

Glassman