Testing · Senior · Question 58 of 75

What is the difference between a mock and a fake?

✓Correct answer: A fake has a working simplified implementation (in-memory DB); a mock is pre-programmed with expectations about calls
2They are the same
3A fake is used only in E2E tests

Explanation

Fakes give realistic behaviour without infrastructure; mocks check interactions. Both are test doubles.

Further reading

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