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Interactivity API

Vitest implements a subset of @testing-library/user-event APIs using Chrome DevTools Protocol or webdriver APIs instead of faking events which makes the browser behaviour more reliable and consistent with how users interact with a page.

Almost every userEvent method inherits its provider options. To see all available options in your IDE, add webdriver or playwright types to your tsconfig.json file:

json
{
  "compilerOptions": {
    "types": [
      "@vitest/browser/providers/playwright"
    ]
  }
}
json
{
  "compilerOptions": {
    "types": [
      "@vitest/browser/providers/webdriverio"
    ]
  }
}

userEvent.click

  • Type: (element: Element, options?: UserEventClickOptions) => Promise<void>

Click on an element. Inherits provider's options. Please refer to your provider's documentation for detailed explanation about how this method works.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('clicks on an element', async () => {
  const logo = screen.getByRole('img', { name: /logo/ })

  await userEvent.click(logo)
})

References:

userEvent.dblClick

  • Type: (element: Element, options?: UserEventDoubleClickOptions) => Promise<void>

Triggers a double click event on an element.

Please refer to your provider's documentation for detailed explanation about how this method works.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('triggers a double click on an element', async () => {
  const logo = screen.getByRole('img', { name: /logo/ })

  await userEvent.dblClick(logo)
})

References:

userEvent.tripleClick

  • Type: (element: Element, options?: UserEventTripleClickOptions) => Promise<void>

Triggers a triple click event on an element. Since there is no tripleclick in browser api, this method will fire three click events in a row, and so you must check click event detail to filter the event: evt.detail === 3.

Please refer to your provider's documentation for detailed explanation about how this method works.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('triggers a triple click on an element', async () => {
  const logo = screen.getByRole('img', { name: /logo/ })
  let tripleClickFired = false
  logo.addEventListener('click', (evt) => {
    if (evt.detail === 3) {
      tripleClickFired = true
    }
  })

  await userEvent.tripleClick(logo)
  expect(tripleClickFired).toBe(true)
})

References:

userEvent.fill

  • Type: (element: Element, text: string) => Promise<void>

Fill an input/textarea/conteneditable element with text. This will remove any existing text in the input before typing the new value.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('update input', async () => {
  const input = screen.getByRole('input')

  await userEvent.fill(input, 'foo') // input.value == foo
  await userEvent.fill(input, '{{a[[') // input.value == {{a[[
  await userEvent.fill(input, '{Shift}') // input.value == {Shift}
})

TIP

This API is faster than using userEvent.type or userEvent.keyboard, but it doesn't support user-event keyboard syntax (e.g., {Shift}{selectall}).

We recommend using this API over userEvent.type in situations when you don't need to enter special characters.

References:

userEvent.keyboard

  • Type: (text: string) => Promise<void>

The userEvent.keyboard allows you to trigger keyboard strokes. If any input has a focus, it will type characters into that input. Otherwise, it will trigger keyboard events on the currently focused element (document.body if there are no focused elements).

This API supports user-event keyboard syntax.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('trigger keystrokes', async () => {
  await userEvent.keyboard('foo') // translates to: f, o, o
  await userEvent.keyboard('{{a[[') // translates to: {, a, [
  await userEvent.keyboard('{Shift}{f}{o}{o}') // translates to: Shift, f, o, o
  await userEvent.keyboard('{a>5}') // press a without releasing it and trigger 5 keydown
  await userEvent.keyboard('{a>5/}') // press a for 5 keydown and then release it
})

References:

userEvent.tab

  • Type: (options?: UserEventTabOptions) => Promise<void>

Sends a Tab key event. This is a shorthand for userEvent.keyboard('{tab}').

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('tab works', async () => {
  const [input1, input2] = screen.getAllByRole('input')

  expect(input1).toHaveFocus()

  await userEvent.tab()

  expect(input2).toHaveFocus()

  await userEvent.tab({ shift: true })

  expect(input1).toHaveFocus()
})

References:

userEvent.type

  • Type: (element: Element, text: string, options?: UserEventTypeOptions) => Promise<void>

WARNING

If you don't rely on special characters (e.g., {shift} or {selectall}), it is recommended to use userEvent.fill instead.

The type method implements @testing-library/user-event's type utility built on top of keyboard API.

This function allows you to type characters into an input/textarea/conteneditable element. It supports user-event keyboard syntax.

If you just need to press characters without an input, use userEvent.keyboard API.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('update input', async () => {
  const input = screen.getByRole('input')

  await userEvent.type(input, 'foo') // input.value == foo
  await userEvent.type(input, '{{a[[') // input.value == foo{a[
  await userEvent.type(input, '{Shift}') // input.value == foo{a[
})

References:

userEvent.clear

  • Type: (element: Element) => Promise<void>

This method clears the input element content.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('clears input', async () => {
  const input = screen.getByRole('input')

  await userEvent.fill(input, 'foo')
  expect(input).toHaveValue('foo')

  await userEvent.clear(input)
  expect(input).toHaveValue('')
})

References:

userEvent.selectOptions

  • Type: (element: Element, values: HTMLElement | HTMLElement[] | string | string[], options?: UserEventSelectOptions) => Promise<void>

The userEvent.selectOptions allows selecting a value in a <select> element.

WARNING

If select element doesn't have multiple attribute, Vitest will select only the first element in the array.

Unlike @testing-library, Vitest doesn't support listbox at the moment, but we plan to add support for it in the future.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('clears input', async () => {
  const select = screen.getByRole('select')

  await userEvent.selectOptions(select, 'Option 1')
  expect(select).toHaveValue('option-1')

  await userEvent.selectOptions(select, 'option-1')
  expect(select).toHaveValue('option-1')

  await userEvent.selectOptions(select, [
    screen.getByRole('option', { name: 'Option 1' }),
    screen.getByRole('option', { name: 'Option 2' }),
  ])
  expect(select).toHaveValue(['option-1', 'option-2'])
})

WARNING

webdriverio provider doesn't support selecting multiple elements because it doesn't provide API to do so.

References:

userEvent.hover

  • Type: (element: Element, options?: UserEventHoverOptions) => Promise<void>

This method moves the cursor position to the selected element. Please refer to your provider's documentation for detailed explanation about how this method works.

WARNING

If you are using webdriverio provider, the cursor will move to the center of the element by default.

If you are using playwright provider, the cursor moves to "some" visible point of the element.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('hovers logo element', async () => {
  const logo = screen.getByRole('img', { name: /logo/ })

  await userEvent.hover(logo)
})

References:

userEvent.unhover

  • Type: (element: Element, options?: UserEventHoverOptions) => Promise<void>

This works the same as userEvent.hover, but moves the cursor to the document.body element instead.

WARNING

By default, the cursor position is in the center (in webdriverio provider) or in "some" visible place (in playwright provider) of the body element, so if the currently hovered element is already in the same position, this method will have no effect.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'

test('unhover logo element', async () => {
  const logo = screen.getByRole('img', { name: /logo/ })

  await userEvent.unhover(logo)
})

References:

userEvent.dragAndDrop

  • Type: (source: Element, target: Element, options?: UserEventDragAndDropOptions) => Promise<void>

Drags the source element on top of the target element. Don't forget that the source element has to have the draggable attribute set to true.

ts
import { userEvent } from '@vitest/browser/context'
import { screen } from '@testing-library/dom'
import '@testing-library/jest-dom' // adds support for "toHaveTextContent"

test('drag and drop works', async () => {
  const source = screen.getByRole('img', { name: /logo/ })
  const target = screen.getByTestId('logo-target')

  await userEvent.dragAndDrop(source, target)

  expect(target).toHaveTextContent('Logo is processed')
})

WARNING

This API is not supported by the default preview provider.

References:

Released under the MIT License.