Testing · Senior · Question 68 of 75

How do you test date/time formatting for different locales and time zones reliably?

✓Correct answer: Fix the clock and set the time zone for the run (TZ=UTC), and test formatting with explicit locales
2Use the developer's local settings
3Skip such tests in CI

Explanation

Otherwise tests pass in one country and fail in CI or on daylight saving changes.

Further reading

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