Configure Vitest and Testing Library for React component tests.
npx skills add https://github.com/drvoss/everything-copilot-cli --skill react-vitest
Please help me install this Agent Skill. Skill: react-vitest Source: https://github.com/drvoss/everything-copilot-cli/tree/main/skills/development/react-vitest Command: npx skills add https://github.com/drvoss/everything-copilot-cli --skill react-vitest
Provides a focused workflow and examples for adding and improving tests in Vite-based React projects, reducing flaky tests, unclear mock patterns, and missing coverage enforcement so features can be validated confidently before release.
Set up Vitest and React Testing Library in your Vite React project, add a src/test/setup.ts with jest-dom, create a component test using render and user-event, and configure vitest.config.ts with jsdom and V8 coverage thresholds.
High-intent search queries and answers about installing and using this skill.
To set up Vitest with React Testing Library, configure vitest.config.ts for a jsdom environment, add a central setup file like src/test/setup.ts with jest-dom, and install global helpers so render and user-event work seamlessly across component tests.
The best way to mock hooks and providers in Vitest is using vi-based mocking patterns to mock modules and hooks, and wrapping components with common providers like React Query to keep tests deterministic and isolated.
Vitest supports V8 coverage thresholds for CI pipelines by configuring the V8 coverage provider in vitest.config.ts, enforcing minimum coverage requirements locally and in CI to ensure code quality before release.
Test React component interactions and accessibility in Vitest by using React Testing Library and user-event to assert interactions, verify click handlers, and query elements using accessibility-friendly patterns.
Vitest unit testing applies specifically to Vite-based React projects, providing a jsdom test environment and centralized setup files; projects using other build tools may need different configuration or testing frameworks.
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