Vitest Docs

Vitest Documentation

Official docs for Vitest — a blazing-fast unit test framework powered by Vite.

CRITICAL: grep references/ for keywords before answering.

Reference Index (191 docs)

API Reference

• references/api/test.md — test(), it(), test.each(), test.skip(), test.only(), test.todo()
• references/api/describe.md — describe(), describe.each(), describe.skip()
• references/api/expect.md — Expect API (matchers: toBe, toEqual, toMatch, toThrow, etc.)
• references/api/assert.md — Chai assert API
• references/api/vi.md — vi utility (vi.fn, vi.mock, vi.spyOn, vi.useFakeTimers, etc.)
• references/api/mock.md — Mock functions API
• references/api/hooks.md — beforeAll, afterAll, beforeEach, afterEach
• references/api/assert-type.md — Type assertion API
• references/api/expect-typeof.md — expectTypeOf API

API — Browser Testing

• references/api/browser/locators.md — Browser locators (getByRole, getByText, etc.)
• references/api/browser/interactivity.md — User interactions (click, fill, etc.)
• references/api/browser/assertions.md — Browser-specific assertions
• references/api/browser/commands.md — Custom browser commands
• references/api/browser/context.md — Browser context
• references/api/browser/react.md vue.md svelte.md — Component testing

API — Advanced

• references/api/advanced/runner.md — Custom test runner
• references/api/advanced/reporters.md — Reporter API
• references/api/advanced/plugin.md — Vitest plugin API
• references/api/advanced/vitest.md — Vitest node API

Guide (50+ docs)

• references/guide/index.md — Getting started
• references/guide/features.md — Feature overview
• references/guide/mocking.md — Mocking overview
• references/guide/mocking/modules.md — Module mocking
• references/guide/mocking/functions.md — Function mocking
• references/guide/mocking/timers.md — Fake timers
• references/guide/mocking/classes.md — Class mocking
• references/guide/mocking/requests.md — Network request mocking
• references/guide/mocking/file-system.md — File system mocking
• references/guide/snapshot.md — Snapshot testing
• references/guide/coverage.md — Code coverage
• references/guide/environment.md — Test environments
• references/guide/debugging.md — Debugging tests
• references/guide/filtering.md — Test filtering
• references/guide/test-tags.md — Test tags
• references/guide/parallelism.md — Parallel execution
• references/guide/projects.md — Projects & workspaces
• references/guide/migration.md — Migration from Jest
• references/guide/ide.md — IDE integration (VS Code)
• references/guide/cli.md — CLI reference
• references/guide/improving-performance.md — Performance optimization
• references/guide/testing-types.md — Type testing
• references/guide/in-source.md — In-source testing
• references/guide/browser/ — Browser testing guide (6 docs)

Configuration (120+ docs)

• references/config/index.md — Configuration overview
• references/config/ — Individual config options (pool, coverage, environment, globals, setupfiles, reporters, browser/, etc.)

Blog

• references/blog/vitest-4.md — Vitest 4.0 release
• references/blog/vitest-3.md — Vitest 3.0 release