Stub or mock: which one is this?
QuizMedium
A sign-up test replaces the real email service with a fake one. After the sign-up call, the test checks that the fake received exactly one "welcome" request for the new address. What kind of test double is the fake?
- A mock, because the test verifies how it was called
- A stub, because it returns a ready-made answer
- A contract test
- Service virtualization
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