video-ad-sdk/src/adUnit/helpers/icons/__tests__/canBeShown.spec.ts

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

import {canBeShown} from '../canBeShown'

let videoElement: HTMLVideoElement

beforeEach(() => {
  videoElement = document.createElement('video')

  Object.defineProperty(videoElement, 'currentTime', {
    value: 0,
    writable: true
  })

  Object.defineProperty(videoElement, 'duration', {
    value: 10,
    writable: true
  })
})

afterEach(() => {
  ;(videoElement as any) = null
})

test('canBeShown must return true if the icon has no offset nor duration', () => {
  const icon = {}

  expect(canBeShown(icon, videoElement)).toBe(true)
})

test('canBeShown must return false if the current time is less than the offset', () => {
  const icon = {
    offset: 5000
  }

  expect(canBeShown(icon, videoElement)).toBe(false)

  videoElement.currentTime = 1.5
  expect(canBeShown(icon, videoElement)).toBe(false)

  videoElement.currentTime = 5

  expect(canBeShown(icon, videoElement)).toBe(true)
})

test('canBeShown must return false if the current time is less than the duration plus the offset', () => {
  const icon = {
    duration: 3000,
    offset: 5000
  }

  videoElement.currentTime = 1.5
  expect(canBeShown(icon, videoElement)).toBe(false)

  videoElement.currentTime = 5

  expect(canBeShown(icon, videoElement)).toBe(true)

  videoElement.currentTime = 8.1

  expect(canBeShown(icon, videoElement)).toBe(false)

  delete (icon as any).offset
  videoElement.currentTime = 2

  expect(canBeShown(icon, videoElement)).toBe(true)
})