Asserting that a method is called exactly one time

Question

I want to assert that a method is called exactly one time. I\'m using RhinoMocks 3.5.

Here\'s what I thought would work:

Answer 1

You may be interested in this bit from the Rhino Mocks 3.5 Documentation (quoted below). Looks like you need to mock the class, not stub it, for it to work the way you expect.

The difference between stubs and mocks

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A mock is an object that we can set expectations on, and which will verify that the expected actions have indeed occurred. A stub is an object that you use in order to pass to the code under test. You can setup expectations on it, so it would act in certain ways, but those expectations will never be verified. A stub's properties will automatically behave like normal properties, and you can't set expectations on them.

If you want to verify the behavior of the code under test, you will use a mock with the appropriate expectation, and verify that. If you want just to pass a value that may need to act in a certain way, but isn't the focus of this test, you will use a stub.

IMPORTANT: A stub will never cause a test to fail.