Testing · Senior · Question 23 of 75

Why should a CI test run use `--ci` (Jest) or equivalent settings?

✓Correct answer: Missing snapshots fail instead of being written silently, so a test never “passes” by creating its own reference
2It enables watch mode
3It turns off assertions

Explanation

In Vitest, CI is detected automatically: new snapshots aren't written and .only fails the run.

Further reading

Test yourself

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