Write, run, and validate JavaScript/TypeScript tests with Jest and Vitest.
npx skills add https://github.com/1Mangesh1/dev-skills-collection --skill jest-vitest
Please help me install this Agent Skill. Skill: jest-vitest Source: https://github.com/1Mangesh1/dev-skills-collection/tree/main/skills/jest-vitest Command: npx skills add https://github.com/1Mangesh1/dev-skills-collection --skill jest-vitest
Writing, running, and validating JavaScript/TypeScript tests with Jest and Vitest to ensure code quality and regression safety.
Run tests using the provided runner to execute all Jest and Vitest test suites.
High-intent search queries and answers about installing and using this skill.
You can write unit and integration tests for JavaScript and TypeScript by applying Jest and Vitest APIs, common matchers, and async testing patterns to validate code logic and ensure regression safety across your project.
Migrating Jest tests to Vitest involves using provided migration guidance and practical examples to adapt Jest APIs and matchers for React and Node projects, ensuring your test suite runs correctly on the Vitest runner.
Mocking modules and spying on methods in JavaScript testing is handled by applying dedicated mocking patterns and spy APIs provided by Jest and Vitest, allowing you to isolate code dependencies and control function outputs.
Yes, Vitest supports snapshot testing and React Testing Library patterns, enabling you to capture component renders and validate UI output using the same common matchers and assertion structures available in Jest.
Configuring test coverage and debugging failing tests in Vitest and Jest involves adjusting coverage configuration settings and using provided test-setup guidance to identify untested code paths and resolve assertion failures.
Failing async Jest tests often occur due to unhandled promises or missing timers; you can fix them by applying proper async testing patterns, controlling timers, and using common matchers to resolve unhandled promise rejections.
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