video-ad-sdk/src/adUnit/helpers/metrics/handlers/__tests__/onPlayPause.spec.ts

VAST/VPAID SDK that allows video ads to be played on top of any player

import {linearEvents} from '../../../../../tracker'
import {onPlayPause} from '../onPlayPause'

const {pause, resume} = linearEvents

test('onPlayPause must call the callback with start at the video start with pause when paused and with resume then the video gets resumed', () => {
  const callback = jest.fn()
  const videoElement = document.createElement('video')
  const disconnect = onPlayPause({videoElement} as any, callback)

  videoElement.dispatchEvent(new Event('play'))
  expect(callback).toHaveBeenCalledTimes(0)

  callback.mockClear()
  videoElement.dispatchEvent(new Event('play'))
  expect(callback).toHaveBeenCalledTimes(0)
  videoElement.dispatchEvent(new Event('pause'))
  expect(callback).toHaveBeenCalledTimes(1)
  expect(callback).toHaveBeenCalledWith(pause)

  callback.mockClear()
  videoElement.dispatchEvent(new Event('pause'))
  expect(callback).toHaveBeenCalledTimes(0)
  videoElement.dispatchEvent(new Event('play'))
  expect(callback).toHaveBeenCalledTimes(1)
  expect(callback).toHaveBeenCalledWith(resume)

  disconnect()
  callback.mockClear()
  videoElement.dispatchEvent(new Event('pause'))
  videoElement.dispatchEvent(new Event('play'))
  expect(callback).toHaveBeenCalledTimes(0)
})