jest/e2e/fake-timers/request-animation-frame/__tests__/requestAnimationFrame.test.js

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* global requestAnimationFrame */

'use strict';

test('requestAnimationFrame test', () => {
  jest.useFakeTimers();

  let frameTimestamp = -1;
  requestAnimationFrame(timestamp => {
    frameTimestamp = timestamp;
  });

  jest.advanceTimersByTime(15);

  expect(frameTimestamp).toBe(-1);

  jest.advanceTimersByTime(1);

  expect(frameTimestamp).toBeGreaterThan(15);
});