vitest-testing-patterns

Set up Vitest with jsdom and coverage best practices to create a robust testing environment. This skill provides configuration guidance and testing patterns for API routes, React components, and utility functions.

Mock modules and functions in Vitest using module, function, and chained mocking techniques. This skill implements comprehensive mocking patterns for dependency management, allowing you to isolate components and control external behavior during tests.

Test asynchronous behavior and manipulate timers in Vitest using timer manipulation patterns. This skill supports timer control for asynchronous testing scenarios, ensuring accurate verification of time-dependent component interactions and API route responses.

Yes, you can test API routes with Vitest and React Testing Library. This skill supports API route testing, component interaction verification, and utility function validation to ensure comprehensive coverage of your application's logic.

Vitest configuration best practices involve setting up jsdom for DOM testing and enabling coverage reporting. This skill provides guidance on configuring Vitest to ensure maintainable unit, component, and integration tests.