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30 lines
718 B
30 lines
718 B
8 years ago
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import throttleByAnimationFrame from '../throttleByAnimationFrame';
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jest.useFakeTimers();
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describe('Test utils function', () => {
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it('throttle function should work', () => {
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const callback = jest.fn();
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const throttled = throttleByAnimationFrame(callback);
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expect(callback).not.toBeCalled();
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throttled();
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throttled();
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jest.runAllTimers();
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expect(callback).toBeCalled();
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expect(callback.mock.calls.length).toBe(1);
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});
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it('throttle function should be canceled', () => {
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const callback = jest.fn();
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const throttled = throttleByAnimationFrame(callback);
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throttled();
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throttled.cancel();
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jest.runAllTimers();
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expect(callback).not.toBeCalled();
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});
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});
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