Vitest

Tests Filtering

Filtering, timeouts, concurrent for suite and tests

CLI

You can use CLI to filter test files by name:

$ vitest basic

Will only execute test files that contain basic, e.g.

basic.test.ts
basic-foo.test.ts

Specifying a Timeout

You can optionally pass a timeout in milliseconds as third argument to tests. The default is 5 seconds.

import { test } from 'vitest'

test('name', async () => { /* ... */ }, 1000)

Hooks also can receive a timeout, with the same 5 seconds default.

import { beforeAll } from 'vitest'

beforeAll(async () => { /* ... */ }, 1000)

Skipping suites and tests

Use .skip to avoid running certain suites or tests

import { assert, describe, it } from 'vitest'

describe.skip('skipped suite', () => {
  it('test', () => {
    // Suite skipped, no error
    assert.equal(Math.sqrt(4), 3)
  })
})

describe('suite', () => {
  it.skip('skipped test', () => {
    // Test skipped, no error
    assert.equal(Math.sqrt(4), 3)
  })
})

Selecting suites and tests to run

Use .only to only run certain suites or tests

import { assert, describe, it } from 'vitest'

// Only this suite (and others marked with only) are run
describe.only('suite', () => {
  it('test', () => {
    assert.equal(Math.sqrt(4), 3)
  })
})

describe('another suite', () => {
  it('skipped test', () => {
    // Test skipped, as tests are running in Only mode
    assert.equal(Math.sqrt(4), 3)
  })

  it.only('test', () => {
    // Only this test (and others marked with only) are run
    assert.equal(Math.sqrt(4), 2)
  })
})

Unimplemented suites and tests

Use .todo to stub suites and tests that should be implemented

import { describe, it } from 'vitest'

// An entry will be shown in the report for this suite
describe.todo('unimplemented suite')

// An entry will be shown in the report for this test
describe('suite', () => {
  it.todo('unimplemented test')
})