API Testing · Junior · Question 51 of 75

What should you test about date fields in an API?

1Format (e.g. ISO 8601), time zones and invalid dates
2Only that the date field is present in the body
3That dates are always returned as plain numbers

Show the answer

Correct answer: Format (e.g. ISO 8601), time zones and invalid dates

Explanation

Dates like 2026-02-30, missing time zones and daylight saving changes cause many bugs between systems.

Further reading

Wikipedia: Software testing ↗

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