| 1 | import Accelerometer from '../Accelerometer';
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| 2 | import ExponentAccelerometer from '../ExponentAccelerometer';
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| 3 |
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| 4 | afterEach(() => {
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| 5 | Accelerometer.removeAllListeners();
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| 6 | });
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| 7 |
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| 8 | it(`adds an "accelerometerDidUpdate" listener`, () => {
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| 9 | const NativeAccelerometer = ExponentAccelerometer;
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| 10 |
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| 11 | const mockListener = jest.fn();
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| 12 | const subscription = Accelerometer.addListener(mockListener);
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| 13 |
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| 14 | expect(NativeAccelerometer.addListener).toHaveBeenCalledTimes(1);
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| 15 | expect(NativeAccelerometer.addListener).toHaveBeenCalledWith('accelerometerDidUpdate');
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| 16 |
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| 17 | subscription.remove();
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| 18 | expect(NativeAccelerometer.removeListeners).toHaveBeenCalledTimes(1);
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| 19 | expect(NativeAccelerometer.removeListeners).toHaveBeenCalledWith(1);
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| 20 | });
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| 21 |
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| 22 | it(`notifies listeners`, () => {
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| 23 | const mockListener = jest.fn();
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| 24 | Accelerometer.addListener(mockListener);
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| 25 |
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| 26 | const mockEvent = { x: 0.2, y: 0.1, z: 0.3 };
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| 27 | Accelerometer._nativeEmitter.emit('accelerometerDidUpdate', mockEvent);
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| 28 | expect(mockListener).toHaveBeenCalledWith(mockEvent);
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| 29 | });
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