text: import throttleByAnimationFrame from '../throttleByAnimationFrame';
  
  describe('Test utils function', () => {
    beforeAll(() => {
      jest.useFakeTimers();
    });
  
    afterAll(() => {
      jest.useRealTimers();
    });
  
    it('throttle function should work', () => {
      const callback = jest.fn();
      const throttled = throttleByAnimationFrame(callback);
      expect(callback).not.toHaveBeenCalled();
  
      throttled();
      throttled();
  
      jest.runAllTimers();
      expect(callback).toHaveBeenCalled();
      expect(callback.mock.calls.length).toBe(1);
    });
  
    it('throttle function should be canceled', () => {
      const callback = jest.fn();
      const throttled = throttleByAnimationFrame(callback);
  
      throttled();
      throttled.cancel();
  
      jest.runAllTimers();
      expect(callback).not.toHaveBeenCalled();
    });
  });
  