Common Playwright Testing Errors and Fixes

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Common Playwright Testing Errors and Fixes

Playwright is a powerful automation framework used for end-to-end testing of web applications. While it offers robust features and multi-browser support, users often encounter common issues during test development and execution. Understanding these errors and their fixes can save time and improve test reliability.

1. Timeout Errors

Issue:
Tests may fail with a TimeoutError when waiting for elements to appear or actions to complete.

Fix:
Ensure elements are available before interacting. Use explicit waits like await page.waitForSelector() or increase default timeout using setDefaultTimeout() if needed.

2. Element Not Found

Issue:
Selectors may fail if elements are dynamic or not yet rendered.

Fix:
Use more reliable selectors (like data-testid), or wait for elements with waitForSelector() before interacting. Consider using locator() for better stability.

3. Navigation Errors

Issue:
Playwright may throw errors during navigation if the page takes too long or redirects unexpectedly.

Fix:
Use waitUntil: 'networkidle' in page.goto() to ensure the page has fully loaded before continuing. Also, verify URLs and network conditions.

4. Unstable Tests (Flaky Tests)

Issue:
Tests sometimes pass and sometimes fail due to race conditions or delayed elements.

Fix:
Avoid using hard waits like waitForTimeout(). Use proper wait strategies and assert elements before interaction.

5. Browser Context Issues

Issue:
Tests fail due to incorrect context or session management.

Fix:
Use browser.newContext() and context.newPage() for isolated sessions. Clear storage and cookies when necessary.

By understanding and addressing these common errors, you can create more stable, maintainable, and effective Playwright test scripts.

Read More:

Playwright vs Selenium: Which is Better?

Top Benefits of Using Playwright for Automation