Parallel Execution & CI/CD — quiz

Your suite of 200 tests runs in 12 minutes serially. Default Playwright config runs it in 3 minutes. Why?

• Playwright caches results between runs
• Playwright runs files in parallel across workers (default = half the logical CPUs). Files in the same worker run serially by default; tests in the same file run serially by default but can opt into intra-file parallel with `test.describe.configure({ mode: 'parallel' })`
• Playwright skips slow tests automatically
• Tests run twice as fast in CI for some reason