Testing · Junior · Question 76 of 78

What does the `expect.assertions(n)` call guarantee?

✓Correct answer: That exactly n assertions ran in the test - useful for async code and callbacks
2That the test has no more than n lines
3That n tests ran in the file

Explanation

If an assertion inside a callback never runs, the test fails instead of passing silently.

Further reading

Jest: Expect ↗

Test yourself

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