react-testing

The best way to set up React testing is combining Vitest with React Testing Library for fast, accessible component tests. This integration requires configuring Vitest with a React plugin and using RTL to perform accessibility-first queries, verifying rendering and user interactions effectively.

You mock API responses in React component tests by integrating MSW v2 to intercept network interactions across tests and stories. This ensures components are tested against controlled API responses, validating behavior under specific network conditions without real backend dependencies.

Yes, you can use Playwright for E2E testing alongside Vitest component tests. This combination standardizes testing by running unit and component tests in Vitest while validating end-to-end flows in real browser environments using Playwright, ensuring comprehensive coverage across CI.

React Testing Library supports testing hooks in a CI environment when integrated with Vitest. By standardizing unit, component, and API mocking strategies into a single pattern, you can verify component behavior under user interactions and API responses with confidence across continuous integration pipelines.

Using MSW v2 for API mocking intercepts network interactions at the service worker level rather than mocking fetch directly. This approach standardizes network mocking across both component tests and stories, providing a more reliable integration for validating API responses in frontend projects.