120 lines
3.3 KiB
JavaScript
120 lines
3.3 KiB
JavaScript
import GestureService from 'src/services/gesture_service/gesture_service.js'
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const mockTouchEvent = (x, y) => ({
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touches: [
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{
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screenX: x,
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screenY: y
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}
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]
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})
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describe('GestureService', () => {
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describe('swipeGesture', () => {
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it('calls the callback on a successful swipe', () => {
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let swiped = false
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const callback = () => { swiped = true }
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const gesture = GestureService.swipeGesture(
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GestureService.DIRECTION_RIGHT,
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callback
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)
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GestureService.beginSwipe(mockTouchEvent(100, 100), gesture)
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GestureService.updateSwipe(mockTouchEvent(200, 100), gesture)
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expect(swiped).to.eql(true)
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})
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it('calls the callback only once per begin', () => {
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let hits = 0
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const callback = () => { hits += 1 }
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const gesture = GestureService.swipeGesture(
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GestureService.DIRECTION_RIGHT,
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callback
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)
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GestureService.beginSwipe(mockTouchEvent(100, 100), gesture)
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GestureService.updateSwipe(mockTouchEvent(150, 100), gesture)
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GestureService.updateSwipe(mockTouchEvent(200, 100), gesture)
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expect(hits).to.eql(1)
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})
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it('doesn\'t call the callback on an opposite swipe', () => {
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let swiped = false
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const callback = () => { swiped = true }
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const gesture = GestureService.swipeGesture(
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GestureService.DIRECTION_RIGHT,
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callback
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)
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GestureService.beginSwipe(mockTouchEvent(100, 100), gesture)
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GestureService.updateSwipe(mockTouchEvent(0, 100), gesture)
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expect(swiped).to.eql(false)
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})
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it('doesn\'t call the callback on a swipe below threshold', () => {
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let swiped = false
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const callback = () => { swiped = true }
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const gesture = GestureService.swipeGesture(
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GestureService.DIRECTION_RIGHT,
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callback,
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100
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)
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GestureService.beginSwipe(mockTouchEvent(100, 100), gesture)
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GestureService.updateSwipe(mockTouchEvent(150, 100), gesture)
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expect(swiped).to.eql(false)
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})
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it('doesn\'t call the callback on a perpendicular swipe', () => {
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let swiped = false
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const callback = () => { swiped = true }
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const gesture = GestureService.swipeGesture(
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GestureService.DIRECTION_RIGHT,
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callback,
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30,
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0.5
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)
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GestureService.beginSwipe(mockTouchEvent(100, 100), gesture)
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GestureService.updateSwipe(mockTouchEvent(150, 200), gesture)
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expect(swiped).to.eql(false)
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})
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it('calls the callback on perpendicular swipe if within tolerance', () => {
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let swiped = false
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const callback = () => { swiped = true }
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const gesture = GestureService.swipeGesture(
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GestureService.DIRECTION_RIGHT,
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callback,
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30,
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2.0
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)
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GestureService.beginSwipe(mockTouchEvent(100, 100), gesture)
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GestureService.updateSwipe(mockTouchEvent(150, 150), gesture)
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expect(swiped).to.eql(true)
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})
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it('works with any arbitrary 2d directions', () => {
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let swiped = false
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const callback = () => { swiped = true }
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const gesture = GestureService.swipeGesture(
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[-1, -1],
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callback,
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30,
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0.1
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)
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GestureService.beginSwipe(mockTouchEvent(100, 100), gesture)
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GestureService.updateSwipe(mockTouchEvent(60, 60), gesture)
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expect(swiped).to.eql(true)
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})
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})
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})
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