playwright-core

Playwright testing ensures reliability by using resilient locators and built-in auto-waiting assertions. This approach prevents flaky tests by automatically waiting for UI elements to reach actionable states before executing commands and verifications.

E2E testing handles network mocking and authentication by intercepting network requests and reusing authentication states. This pattern speeds up test execution by bypassing repeated login flows while simulating various API responses and network conditions.

Playwright supports component testing for React, Next.js, Vue, and Angular frameworks. It provides tailored recipes and framework-specific configurations to mount and test individual components in isolation directly within your development environment.

Playwright handles accessibility and visual regression testing by capturing screenshots and running accessibility scans within your test suite. These patterns verify UI appearance and compliance across browser contexts, ensuring consistent user experiences.

Playwright locators fail when using brittle selectors like XPath or CSS classes that change. Implementing resilient locator strategies, such as user-facing attributes or roles, ensures your tests target the correct elements despite dynamic DOM updates.

Playwright provides debugging recipes to troubleshoot test failures effectively. You can utilize tools like the Playwright Inspector, step-through debugging, and trace viewing to analyze test execution, inspect locators, and resolve errors efficiently.