Fakes are not mocks. A fake is an actual implementation of the dependency that runs in-process/in-memory. This means that, unlike with mocks, your test code doe

Fakes are not mocks. A fake is an actual implementation of the dependency that runs in-process/in-memory. This means that, unlike with mocks, your test code does not dictate the behavior/outputs of the dependency. Ideally, service/library owners would write and maintain the fake to ensure that it stays in sync as changes are made to the actual service.