playwright-testing

Cross-browser E2E testing with Page Objects, authentication, and CI/CD integration. For end-to-end testing of web applications with Playwright - cross-browser, fast, reliable. Sources: Playwright Best Practices | Playwright Docs | Better Stack Guide Use locators that mirror how users interact with the page: Install "Playwright Test for VS Code" for: Every project MUST include dead link detection tests. Run these on every deployment. - Supports three browser engines (Chromium, Firefox, WebKit) plus mobile viewports with parallel test execution and automatic retries - Page Object Model pattern with base classes, role-based locators, and web-first assertions that auto-wait and retry - Built-in authentication setup, API mocking, visual testing, and comprehensive dead link detection across entire sites - GitHub Actions integration with artifact uploads, environment secrets, and scheduled link-checking workflows - Run tests from editor - Debug with breakpoints - Pick locators visually - Watch mode - Hardcoded waits - Use auto-waiting assertions instead - CSS/XPath selectors - Use role/text/testid locators - Testing third-party sites - Mock external dependencies - Shared state between tests - Each test must be isolated - Missing awaits - Use ESLint rule no-floating-promises - Flaky time-based tests - Mock dates/times - Testing implementation details - Test user-visible behavior -...