Testing · Junior · Question 74 of 78

What should a single test ideally check?

✓Correct answer: One behaviour or scenario (it may still contain several related assertions)
2Exactly one expect, never more
3Everything the component can do, to save time

Explanation

One scenario per test makes failures easy to understand. Several assertions about the same result are fine.

Further reading

Kent C. Dodds: Avoid Nesting when you're Testing ↗

Test yourself

Take the Testing · Junior quiz: questions and options are shuffled, and you get a review of your mistakes at the end.