video-ad-sdk/src/adUnit/helpers/media/__tests__/canPlay.spec.ts

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

import {canPlay} from '../canPlay'

test('canPlay must delegate on the video element to know if the mediaFile is supported', () => {
  let supported = true
  const mockVideoElement: any = {
    canPlayType: jest.fn(() => supported)
  }
  const mediaFile = {
    src: 'https://test.media.mp4',
    type: 'video/mp4'
  }

  expect(canPlay(mockVideoElement, mediaFile)).toBe(true)
  expect(mockVideoElement.canPlayType).toHaveBeenCalledTimes(1)
  expect(mockVideoElement.canPlayType).toHaveBeenCalledWith(mediaFile.type)

  supported = false
  mockVideoElement.canPlayType.mockClear()

  expect(canPlay(mockVideoElement, mediaFile)).toBe(false)
  expect(mockVideoElement.canPlayType).toHaveBeenCalledTimes(1)
  expect(mockVideoElement.canPlayType).toHaveBeenCalledWith(mediaFile.type)
})

test('canPlay try to guess the src type to check the video element support', () => {
  const mockVideoElement: any = {
    canPlayType: jest.fn(() => true)
  }
  const mediaFile = {
    src: 'https://test.media.mp4'
  }

  expect(canPlay(mockVideoElement, mediaFile)).toBe(true)
  expect(mockVideoElement.canPlayType).toHaveBeenCalledTimes(1)
  expect(mockVideoElement.canPlayType).toHaveBeenCalledWith('video/mp4')
})