vitest

Run unit and integration tests for Vite projects with Vitest.

Updated Jan 6, 2026

Search Tags:#vitest #testing #vite #coverage #mocking #unit-tests #vue-react-svelte

Ready to run

npx skills add https://github.com/vito1317/security-one-waf-website --skill vitest-vito1317

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: vitest
Source: https://github.com/vito1317/security-one-waf-website/tree/main/.tessl/tiles/onmax/nuxt-skills/skills/vitest
Command: npx skills add https://github.com/vito1317/security-one-waf-website --skill vitest-vito1317

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Writing and running unit and integration tests for Vite-based projects can be slow without tight integration; Vitest provides a fast, native testing environment with a Jest-compatible API, coverage, and tooling.

Core Features & Use Cases

Vite-native testing framework with Jest-compatible API for familiar test patterns.
Built-in mocking, timers, and coverage tooling to cover typical test scenarios.
Use cases include component testing in Vue/React/Svelte apps, library testing, and fast feedback during development.

Quick Start

Install vitest and run your first test to see instant feedback during development.

Frequently Asked Questions about vitest

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I run unit tests in a Vite project without slow configuration?▼

Vitest provides Vite-native unit testing with a Jest-compatible API, delivering fast feedback loops by reusing your existing Vite config without separate setup.

Can I test Vue, React, and Svelte components using Vitest?▼

Yes, Vitest supports component testing across Vue, React, and Svelte applications, handling typical test scenarios for modern Vite-powered app components.

Does Vite testing include built-in mocking and coverage reporting?▼

Vitest includes built-in mocking, timers, and coverage tooling, supporting configuration-driven API patterns to cover typical unit and integration test scenarios.

What is the best way to set up integration testing for Vite-powered apps?▼

Vitest solves integration testing for Vite-powered apps through a configuration-driven API, applying fast, native test environments to library and component test suites.

Will switching to a Vite-native testing framework break my existing Jest test patterns?▼

Vitest offers a Jest-compatible API for familiar test patterns, allowing migration of existing unit and integration tests into a faster Vite-native environment.