video-ad-sdk/src/adUnit/helpers/dom/__tests__/waitFor.spec.ts

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

import {waitFor} from '../waitFor'

test('waitFor promise must resolve once the event occurs on the passed element', () => {
  const element = document.createElement('div')
  const eventName = 'test'
  const event = new Event(eventName)

  element.dispatchEvent(event)

  expect(waitFor(element, eventName).promise).resolves.toEqual([event])
})

test('waitFor cancel must reject the promise', () => {
  const element = document.createElement('div')
  const eventName = 'test'
  const event = new Event(eventName)

  const {cancel, promise} = waitFor(element, eventName)

  cancel()
  element.dispatchEvent(event)

  expect(promise).rejects.toBeInstanceOf(Error)
})