@vitest/spy

This release makes another big change to the Browser Mode by introducing locators API:

test('renders blog posts', async () => {
  const screen = page.render(<Blog />)

  await expect.element(screen.getByRole('heading', { name: 'Blog' })).toBeInTheDocument()

  const [firstPost] = screen.getByRole('listitem').all()

  await firstPost.getByRole('button', { name: 'Delete' }).click()

  expect(screen.getByRole('listitem').all()).toHaveLength(3)
})

You can use either vitest-browser-vue, vitest-browser-svelte or vitest-browser-react to render components and make assertions using locators. Locators are also available on the page object from @vitest/browser/context.

Potential Breaking Change

• breaking

  workspace: Correctly resolve workspace globs and file paths

• breaking

  workspace: This changes how the custom glob pattern in the workspace config is treated. Any file matching the glob is considered a Vitest config file. Any folder matching the glob pattern is treated as a workspace project and is subject to the regular config resolution (single vitest.config.ts or vite.config.ts inside the folder)

• breaking

  workspace: For example, projects/* will match anything inside the projects folder. If it's a folder, we try to find the config inside that folder (if there is none, it is still treated as a project with the default config). If it's a file, it will be treated as a Vitest config. projects/**/* previously would assume that you only wanted to have folders as projects, but now it will match every single file insideprojects.

• breaking

  workspace: This change doesn't affect non-glob usage.

Features

• api: Make spec into a class instead of a tuple

• browser: Move page.config to server.config, add more docs

• browser: Make iframe scalable, improve documentation

• browser: Introduce built-in locators

• browser: Support v8 coverage

• browser: Support userEvent.upload in playwright provider

• browser: Support --inspect

• browser: Support --inspect-brk

• cli: Extend existing list command to output only a list of file names

• coverage: Add --exclude-after-remap

• mocker: Introduce @vitest/mocker package, allow { spy: true } instead of a factory

• vitest: Add "provide" option

• vitest: Add return type and promisable mockFactory

• vitest: Add vi.advanceTimersToNextFrame

• vitest: Allow env to be stubbed to undefined

• Migrate from fast-glob to tinyglobby

Bug Fixes

• Correctly resolve nested mocks with index file

• Don't panic when coverage.reporter is a string

• Align RawMatcherFn type definition with Jest

• Cjs build of vite node server

• Allow inlining vite's cached dependencies

• Print unexpected error message if peer dependencies have a different version

• Ignore importer when resolving Vitest

• expect.getState().testPath always returns correct path

• UserEvent works consistently between providers

• browser: Print correct stack trace for unhandled errors

• browser: Use documentElement as the root for selector

• browser: Keep querying elements even if locator is created with elementLocator, add pubic @vitest/browser/utils

• browser: Produce valid config file if preview provider is used

• browser: Correctly run in-source tests in the browser

• browser: Exclude missed packages from optimization, print help message

• browser: Define mocker as a dependency

• coverage: Warn if vitest and @vitest/* versions don't match

• coverage: V8 to support source maps with multiple sources

• coverage: V8 to warn instead of crash when conversion fails

• coverage: Use project specific vitenode for uncovered files

• runner: Use performance.now instead of Date.now for duration

• runner: Async assertion auto await should timeout

• snapshot: Reject multiple toMatchInlineSnapshot updates at the same location

• snapshot: Improve inline snapshot inside loop rejection

• typecheck: Run both runtime and typecheck tests if typecheck.include overlaps with include

• types: Allow Callbacks Passed to before*/after* to Return Anything

• ui: Remove "filters" flickering

• ui: Render project name consistently

• vite-node: Disable watcher if hmr is disabled

• vite-node: Fix watch on vite 6

• vitest: Update json reporter output

• vitest: Add more type guards for --merge-reports

• vitest: Always resolve vitest to the root version

• vitest: Dispose vmForks listeners to avoid memory leak