Testing / Playwright Interview questions

How do you debug a failing Playwright test?

Playwright provides several layered tools rather than forcing you to rely on console logs alone.

npx playwright test --debug        # opens the Inspector, step-by-step
npx playwright test --ui           # opens the interactive UI mode
npx playwright show-trace trace.zip # replays a recorded run

UI mode is often the fastest starting point - it lists tests, lets you run them individually, and shows a timeline with DOM snapshots for each step without needing a separate trace file. For failures that only happen on CI, enabling trace: 'on-first-retry' means you get a downloadable trace artifact to replay locally instead of trying to reproduce a flaky failure blind. Adding a temporary await page.pause() in the test code is another quick way to freeze execution at a specific line for manual inspection.

Take quiz

Which flag opens Playwright's interactive UI mode? --headed

✗ Try again if not.

--ui

✓ Correct! Well done.

--report

✗ Try again if not.

For failures that only reproduce on CI, the recommended approach is: Guessing based on log output alone

✗ Try again if not.

Capturing a trace and replaying it locally with show-trace

✓ Correct! Well done.

Disabling the test until it passes

✗ Try again if not.

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How do you take a screenshot in Playwright? How do you handle iframes in Playwright? How do you use the page.goto() method? What is a fixture in Playwright? What are assertions in Playwright? What is the difference between page.click() and locator().click()? What are the supported programming languages in Playwright? What are locators in Playwright? Describe the Playwright Inspector? List the different types of locators in Playwright? What is the Trace Viewer in Playwright? How do you use codegen in Playwright? What is the difference between Playwright and Selenium? How does Playwright handle multiple tabs and windows? What is Playwright? What are the supported browsers in Playwright? How do you install Playwright? What is the purpose of the Playwright Test Runner? Define auto-waiting in Playwright? What is the difference between expect().toBeVisible() and isVisible()?

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