API Testing · Senior · Question 31 of 75

What does property-based testing add to API test suites?

1Many generated inputs checked against invariants
2Faster runs by skipping rarely used endpoints
3Tests that check the properties of JSON objects

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Correct answer: Many generated inputs checked against invariants

Explanation

Invariants like "creating then reading returns the same data" or "no input causes a 500" find edge cases nobody listed.

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