Mockfight! FlexMock vs. Mocha

The document discusses FlexMock and Mocha, two Ruby libraries for mocking objects in tests. It describes what mocks are and when they should be used. It then outlines a "mockfight" between FlexMock and Mocha, where different testing scenarios are tried with each library. Both libraries are able to handle the scenarios. In the end, the document concludes that the two libraries now have similar features and the choice between them comes down to personal preference of syntax.