Playwright · Senior · Question 69 of 77
Why may tests that pass with one worker fail with many?
- 1They share data or the backend can't handle the load
- 2Playwright locators work only with a single worker
- 3Many workers disable auto-waiting in all browsers
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Correct answer: They share data or the backend can't handle the load
Explanation
Parallel runs reveal shared accounts, unique constraints or rate limits. Fix with isolated data or by sizing the test environment.