vitest

Set up and run automated tests for Vite projects with a Jest-compatible API.

Updated Apr 30, 2026

Search Tags:#unit tests #typescript #vitest #testing #vite #coverage #mocking

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npx skills add https://github.com/Guibibi/budgetpulse --skill vitest-guibibi

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Please help me install this Agent Skill.
Skill: vitest
Source: https://github.com/Guibibi/budgetpulse/tree/main/.agents/skills/vitest
Command: npx skills add https://github.com/Guibibi/budgetpulse --skill vitest-guibibi

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Vitest helps you create fast, reliable automated tests for Vite-based projects without leaving the modern JavaScript tooling ecosystem.

Core Features & Use Cases

Unit and Integration Testing: Build test suites for application logic, components, and modules using a Jest-like API.
Mocking and Spies: Replace dependencies, timers, dates, and globals with controlled test doubles for deterministic behavior.
Coverage, Type Checks, and Parallel Runs: Configure coverage thresholds, validate TypeScript types, and execute tests efficiently across projects or environments.

Quick Start

Use the vitest skill to set up a test configuration and write a focused test suite for my Vite project.

Frequently Asked Questions about vitest

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

FAQPage Schema

How do I set up unit testing for a Vite project?▼

To set up unit testing for a Vite project, you configure an automated test suite using a Jest-compatible API that integrates directly with your existing Vite tooling. This provides fast test execution without leaving your JavaScript ecosystem.

Can I use Jest-compatible APIs for mocking and spies in Vite apps?▼

Yes, you can use Jest-compatible mocking utilities and spies in Vite apps to replace dependencies, timers, dates, and globals with controlled test doubles. This ensures deterministic behavior for your component and logic testing.

Does this testing approach support TypeScript type validation and coverage?▼

Yes, this testing approach supports TypeScript type validation and coverage reporting. You can configure coverage thresholds and validate your TypeScript types alongside running your unit and integration tests efficiently.

What is the best way to run integration tests for Vite components?▼

The best way to run integration tests for Vite components is using a test runner that applies lifecycle APIs and optional browser-mode setups within the Vite environment. This allows reliable component testing with parallel execution.

Do I need specific configuration to execute tests across different environments?▼

Yes, you need test configuration to execute tests efficiently across different projects or environments. This setup involves configuring test lifecycle APIs, mocking utilities, and optional environment or browser-mode settings for parallel runs.