react-testing-library

React testing library integration tests validate complete user journeys by using accessible queries and userEvent interactions. This approach prioritizes 1-3 end-to-end style tests per component over many isolated single-purpose checks.

MSW is the recommended approach to mock API requests in Vitest and React testing library. It intercepts network requests at the service worker level, enabling reliable validation of real user journeys without brittle isolated component checks.

Testing auth-gated components and forms with React testing library involves simulating real user interactions using userEvent. You write fewer, longer integration-style tests covering complete flows like authentication, form submission, and list rendering.

Yes, React testing library works with Vite and Vitest for component testing. You configure Vitest and RTL together to write integration tests that simulate accessible queries and real user interactions rather than isolated component checks.

React testing library component tests become brittle when they consist of many tiny isolated checks instead of validating real user journeys. Prioritizing 1-3 integration-style tests per component using userEvent and MSW resolves this.