typescript-testing

Structure frontend tests using Vitest and React Testing Library by applying defined test design principles that manage test granularity, ensure test independence, and maintain readability while validating user interactions and component rendering.

The best way to mock API responses is using Mock Service Worker (MSW) to intercept network requests. MSW enforces mock type safety, ensures test reproducibility, and intercepts network requests to validate component behavior without hitting actual backend endpoints.

Yes, this testing approach defines explicit coverage targets for React components. It enforces specific coverage requirements to guarantee comprehensive validation of user interactions and API responses during both unit and integration tests.

Yes, you can use Vitest for both integration and unit tests. The standards define implementation conventions for both levels, addressing test granularity and quality criteria to ensure maintainable and reproducible test suites across your frontend application.

Mock type safety matters because it prevents type mismatches between your frontend application and mocked API responses. Enforcing type safety with MSW and Vitest maintains high quality criteria, avoids runtime errors, and ensures reproducible test outcomes.