Next generation testing framework powered by ViteVitest Next Generation Testing Framework A Vite-native testing framework. It's fast!

Browser Mode This page provides information about the browser mode feature in the Vitest API, which allows you to run your tests in the browser natively, providing access to browser globals …

Command Line Interface Commands vitest Start Vitest in the current directory. Will enter the watch mode in development environment and run mode in CI (or non-interactive terminal) …

Next generation testing framework powered by ViteConfiguring Vitest If you are using Vite and have a vite.config file, Vitest will read it to match with the plugins and setup as your Vite app. If …

WARNING "Environments" exist only when running tests in Node.js. browser is not considered an environment in Vitest. If you wish to run part of your tests using Browser Mode, you can create …

Learn Snapshot by video from Vue School Snapshot tests are a very useful tool whenever you want to make sure the output of your functions does not change unexpectedly. When using …

Component testing for Vue, React, Svelte, Lit, Marko and more

Vitest provides a way to define multiple project configurations within a single Vitest process. This feature is particularly useful for monorepo setups but can also be used to run tests with …

It is recommended that you install a copy of vitest in your package.json, using one of the methods listed above. However, if you would prefer to run vitest directly, you can use npx vitest (the npx …

If the factory function is defined, all imports will return its result. Vitest calls factory only once and caches results for all subsequent imports until vi.unmock or vi.doUnmock is called. Unlike in …