Playwright · Senior · Question 16 of 77

How do you keep HAR-based mocks from going stale?

1Re-record them regularly and fail when requests don't match
2Never update them, so tests stay fully deterministic
3Edit the HAR files by hand whenever the API changes

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Correct answer: Re-record them regularly and fail when requests don't match

Explanation

With notFound: 'abort', unmatched requests fail. A scheduled job with update: true refreshes recordings against the real API.

Further reading

Playwright: Mock APIs ↗

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