Testing · Senior · Question 13 of 75

What is property-based testing (e.g. fast-check)?

✓Correct answer: Checking that a property holds for many generated inputs; on failure the tool shrinks the input to a minimal example
2Testing object properties with toHaveProperty
3Testing React props

Explanation

Example: decode(encode(x)) === x for any string. It finds edge cases people don't think of.

Further reading

fast-check: property-based testing ↗

Test yourself

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