Mockito best practices – test behavior not implementation
Once you start testing with Mockito you might be tempted to start mocking everything that gets in your way. What is more, you may have heard that you have to mock all of the collaborators of the class and then verify whether those test doubles executed the desired methods. Of course, you can code like that, but since it is best to be a pragmatic programmer, you should ask yourself the question whether you would be interested in changing the test code each time someone changes the production code, even though the application does the same things.
It's worth going back to distinguishing stubs from mocks. Remember that, if you create a mock, it's for the sake of the verification of its method ...
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