vitest 命令

常用示例

说明

Vitest is a next-generation JavaScript/TypeScript testing framework powered by Vite. It provides fast test execution through native ES module support, intelligent watch mode similar to HMR, and a Jest-compatible API for easy migration. The framework shares Vite's configuration, transformers, resolvers, and plugins, allowing tests to use the same setup as the application. It supports DOM mocking via JSDOM or happy-dom, component testing for Vue, React, Svelte, and other frameworks, and browser-based testing. Vitest automatically enters watch mode in development environments and run mode in CI. Configuration can be placed in vitest.config.ts or within the existing vite.config.ts under the test property. Built-in features include snapshot testing, mocking with Tinyspy, and code coverage via v8 or istanbul.

参数

run

Run tests once without watch mode.

watch

Run tests in watch mode, re-running on file changes.

bench

Run benchmark tests.

--coverage

Enable code coverage reporting (v8 or istanbul).

-t, --testNamePattern _pattern_

Run only tests with names matching the pattern.

--ui

Open the Vitest UI in a browser for interactive test viewing.

-u, --update

Update snapshot files.

--reporter _name_

Specify reporter: default, verbose, dot, json, junit.

--config _file_

Path to config file.

--root _dir_

Root directory for the project.

--environment _env_

Test environment: node, jsdom, happy-dom.

--threads

Enable multi-threading (default: true).

--browser

Run tests in browser mode.

--passWithNoTests

Exit successfully even if no tests are found.

--bail _n_

Stop after n test failures.