I agree that a fake implementation would probably be overkill for such situations, but I would also suggest that anything requiring mocks sounds like overkill t

I agree that a fake implementation would probably be overkill for such situations, but I would also suggest that anything requiring mocks sounds like overkill too. If a mock object returning specific results from particular functions is enough to satisfy some code's requirements, then I would seriously consider whether that code could take those results as normal function arguments (possibly lazy/thunked).