Testing · Senior · Question 41 of 75

Why is mocking `useState` or other React hooks a bad idea?

✓Correct answer: It tests React's internals instead of behaviour and breaks on any refactor; drive state through user interactions
2It's impossible to mock hooks
3It makes tests too slow

Explanation

Mock boundaries (network, time, browser APIs), not the framework.

Further reading

Kent C. Dodds: Testing Implementation Details ↗

Test yourself

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