forked from ampproject/amphtml
/
test-slidescroll.js
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test-slidescroll.js
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/**
* Copyright 2016 The AMP HTML Authors. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as sinon from 'sinon';
import '../amp-carousel';
import {createIframePromise} from '../../../../testing/iframe';
import {toggleExperiment} from '../../../../src/experiments';
describe('SlideScroll', () => {
const SHOW_CLASS = '-amp-slide-item-show';
let sandbox;
beforeEach(() => {
toggleExperiment(window, 'amp-slidescroll', true);
sandbox = sinon.sandbox.create();
});
afterEach(() => {
sandbox.restore();
});
function getAmpSlideScroll(opt_hasLooping, opt_slideCount = 5) {
return createIframePromise().then(iframe => {
toggleExperiment(iframe.win, 'amp-slidescroll', true);
iframe.width = '1000';
iframe.height = '1000';
const imgUrl = 'https://lh3.googleusercontent.com/5rcQ32ml8E5ONp9f9-' +
'Rf78IofLb9QjS5_0mqsY1zEFc=w300-h200-no';
const slideScrollHtml = "<amp-carousel type='slides'></amp-carousel>";
const dummyDiv = iframe.doc.createElement('div');
dummyDiv.innerHTML = slideScrollHtml.trim();
const ampSlideScroll = dummyDiv.children[0];
ampSlideScroll.setAttribute('width', '400');
ampSlideScroll.setAttribute('height', '300');
ampSlideScroll.style.position = 'relative';
ampSlideScroll.setAttribute('controls', '');
if (opt_hasLooping) {
ampSlideScroll.setAttribute('loop', '');
}
for (let i = 0; i < opt_slideCount; i++) {
const img = document.createElement('amp-img');
img.setAttribute('src', imgUrl);
img.setAttribute('width', '400');
img.setAttribute('height', '300');
// See https://github.com/ampproject/amphtml/issues/3989
img.style.display = 'inline';
if (i == 0) {
img.setAttribute('data-slide-id', 'slide-id');
}
ampSlideScroll.appendChild(img);
}
return iframe.addElement(ampSlideScroll).then(() => {
return Promise.resolve({
iframe,
ampSlideScroll,
});
});
});
}
it('should create container and wrappers and show initial slides', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
expect(
ampSlideScroll.getElementsByClassName('-amp-slides-container').length)
.to.equal(1);
expect(
ampSlideScroll.querySelectorAll(
'.-amp-slides-container > .-amp-slide-item').length).to.equal(5);
expect(
ampSlideScroll.getElementsByClassName('amp-carousel-slide').length)
.to.equal(5);
expect(ampSlideScroll.querySelector('.-amp-slides-container')
.getAttribute('aria-live')).to.equal('polite');
const impl = ampSlideScroll.implementation_;
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slides_[0].getAttribute('aria-hidden')).to.equal('false');
expect(impl.slides_[1].getAttribute('aria-hidden')).to.equal('true');
});
});
it('should create start/end markers when scroll-snap is available', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
ampSlideScroll.style['scrollSnapType'] = '';
ampSlideScroll.style['webkitScrollSnapType'] = '';
ampSlideScroll.style['msScrollSnapType'] = '';
impl.buildCarousel();
expect(
ampSlideScroll.getElementsByClassName(
'-amp-carousel-start-marker').length).to.equal(1);
expect(
ampSlideScroll.getElementsByClassName(
'-amp-carousel-end-marker').length).to.equal(1);
});
});
it('should go to the correct slide on button click', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const showSlideSpy = sandbox.spy(impl, 'showSlide_');
impl.goCallback(1);
expect(showSlideSpy).to.have.been.calledWith(1);
expect(showSlideSpy.callCount).to.equal(1);
impl.goCallback(-1);
expect(showSlideSpy).to.have.been.calledWith(0);
expect(showSlideSpy.callCount).to.equal(2);
impl.goCallback(0);
expect(showSlideSpy.callCount).to.equal(2);
});
});
it('should show the correct slide', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const updateInViewportSpy = sandbox.spy(impl, 'updateInViewport');
const scheduleLayoutSpy = sandbox.spy(impl, 'scheduleLayout');
const schedulePreloadSpy = sandbox.spy(impl, 'schedulePreload');
const hideRestOfTheSlidesSpy = sandbox.spy(impl, 'hideRestOfTheSlides_');
const setControlsStateSpy = sandbox.spy(impl, 'setControlsState');
const analyticsEventSpy = sandbox.spy(impl, 'analyticsEvent_');
impl.showSlide_(-1);
expect(updateInViewportSpy).to.not.have.been.called;
expect(scheduleLayoutSpy).to.not.have.been.called;
expect(schedulePreloadSpy).to.not.have.been.called;
expect(hideRestOfTheSlidesSpy).to.not.have.been.called;
expect(setControlsStateSpy).to.not.have.been.called;
expect(analyticsEventSpy).to.not.have.been.called;
impl.showSlide_(5);
expect(updateInViewportSpy).to.not.have.been.called;
expect(scheduleLayoutSpy).to.not.have.been.called;
expect(schedulePreloadSpy).to.not.have.been.called;
expect(hideRestOfTheSlidesSpy).to.not.have.been.called;
expect(setControlsStateSpy).to.not.have.been.called;
expect(analyticsEventSpy).to.not.have.been.called;
impl.showSlide_(impl.slideIndex_);
expect(updateInViewportSpy).to.not.have.been.called;
expect(scheduleLayoutSpy).to.not.have.been.called;
expect(schedulePreloadSpy).to.not.have.been.called;
expect(hideRestOfTheSlidesSpy).to.not.have.been.called;
expect(setControlsStateSpy).to.not.have.been.called;
expect(analyticsEventSpy).to.not.have.been.called;
impl.showSlide_(1);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[0], false);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[1], true);
expect(updateInViewportSpy.callCount).to.equal(2);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.true;
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[0]);
expect(scheduleLayoutSpy).to.have.been.calledWith(impl.slides_[1]);
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[2]);
expect(scheduleLayoutSpy.callCount).to.equal(1);
expect(schedulePreloadSpy.callCount).to.equal(2);
expect(impl.slideIndex_).to.equal(1);
expect(impl.slidesContainer_./*OK*/scrollLeft).to.equal(impl.slideWidth_);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([0, 1, 2]);
expect(hideRestOfTheSlidesSpy.callCount).to.equal(1);
expect(setControlsStateSpy.callCount).to.equal(1);
expect(analyticsEventSpy.callCount).to.equal(2);
expect(analyticsEventSpy).to.have.been.calledWith(
'amp-carousel-next', {'fromSlide': 'slide-id', 'toSlide': '1'});
expect(analyticsEventSpy).to.have.been.calledWith(
'amp-carousel-change', {'fromSlide': 'slide-id', 'toSlide': '1'});
expect(impl.slides_[0].getAttribute('aria-hidden')).to.equal('true');
expect(impl.slides_[1].getAttribute('aria-hidden')).to.equal('false');
expect(impl.slides_[2].getAttribute('aria-hidden')).to.equal('true');
impl.showSlide_(0);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[1], false);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[0], true);
expect(updateInViewportSpy.callCount).to.equal(4);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.false;
expect(scheduleLayoutSpy).to.have.been.calledWith(impl.slides_[0]);
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[1]);
expect(scheduleLayoutSpy.callCount).to.equal(2);
expect(schedulePreloadSpy.callCount).to.equal(3);
expect(impl.slideIndex_).to.equal(0);
expect(impl.slidesContainer_./*OK*/scrollLeft).to.equal(0);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([0, 1]);
expect(hideRestOfTheSlidesSpy.callCount).to.equal(2);
expect(setControlsStateSpy.callCount).to.equal(2);
expect(analyticsEventSpy.callCount).to.equal(4);
expect(analyticsEventSpy).to.have.been.calledWith(
'amp-carousel-prev', {'fromSlide': '1', 'toSlide': 'slide-id'});
expect(analyticsEventSpy).to.have.been.calledWith(
'amp-carousel-change', {'fromSlide': '1', 'toSlide': 'slide-id'});
expect(impl.slides_[0].getAttribute('aria-hidden')).to.equal('false');
expect(impl.slides_[1].getAttribute('aria-hidden')).to.equal('true');
impl.showSlide_(4);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[0], false);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[4], true);
expect(updateInViewportSpy.callCount).to.equal(6);
expect(impl.slideWrappers_[3].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.true;
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[3]);
expect(scheduleLayoutSpy).to.have.been.calledWith(impl.slides_[4]);
expect(scheduleLayoutSpy.callCount).to.equal(3);
expect(schedulePreloadSpy.callCount).to.equal(4);
expect(impl.slideIndex_).to.equal(4);
expect(impl.slidesContainer_./*OK*/scrollLeft).to.equal(impl.slideWidth_);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([3, 4]);
expect(hideRestOfTheSlidesSpy.callCount).to.equal(3);
expect(setControlsStateSpy.callCount).to.equal(3);
expect(analyticsEventSpy.callCount).to.equal(6);
expect(analyticsEventSpy).to.have.been.calledWith(
'amp-carousel-prev', {'fromSlide': 'slide-id', 'toSlide': '4'});
expect(analyticsEventSpy).to.have.been.calledWith(
'amp-carousel-change', {'fromSlide': 'slide-id', 'toSlide': '4'});
expect(impl.slides_[3].getAttribute('aria-hidden')).to.equal('true');
expect(impl.slides_[4].getAttribute('aria-hidden')).to.equal('false');
expect(impl.slides_[0].getAttribute('aria-hidden')).to.equal('true');
});
});
it('should hide the unwanted slides', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const schedulePauseSpy = sandbox.spy(impl, 'schedulePause');
const hideRestOfTheSlidesSpy = sandbox.spy(impl, 'hideRestOfTheSlides_');
impl.showSlide_(1);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([0, 1, 2]);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[3].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.false;
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[0]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[2]);
expect(schedulePauseSpy.callCount).to.equal(2);
impl.showSlide_(0);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([0,1]);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[3].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.false;
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[1]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[2]);
expect(schedulePauseSpy.callCount).to.equal(4);
impl.showSlide_(4);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([3, 4]);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[3].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.true;
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[0]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[1]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[3]);
expect(schedulePauseSpy.callCount).to.equal(7);
});
});
it('should show/hide the correct controls', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
impl.showSlide_(1);
expect(impl.hasNext()).to.be.true;
expect(impl.hasPrev()).to.be.true;
expect(impl.nextButton_.classList.contains('amp-disabled')).to.be.false;
expect(impl.prevButton_.classList.contains('amp-disabled')).to.be.false;
impl.showSlide_(0);
expect(impl.hasNext()).to.be.true;
expect(impl.hasPrev()).to.be.false;
expect(impl.nextButton_.classList.contains('amp-disabled')).to.be.false;
expect(impl.prevButton_.classList.contains('amp-disabled')).to.be.true;
impl.showSlide_(4);
expect(impl.hasNext()).to.be.false;
expect(impl.hasPrev()).to.be.true;
expect(impl.nextButton_.classList.contains('amp-disabled')).to.be.true;
expect(impl.prevButton_.classList.contains('amp-disabled')).to.be.false;
});
});
it('should set the correct scrollLeft when there is only one slide', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
impl.noOfSlides_ = 1;
impl.showSlide_(0);
expect(impl.slidesContainer_./*OK*/scrollLeft).to.equal(0);
});
});
it('should update to the right slide on scroll', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const showSlideSpy = sandbox.spy(impl, 'showSlide_');
impl.vsync_ = {
mutatePromise: cb => {
cb();
return {
then: cb2 => {
cb2();
},
};
},
mutate: cb => {
cb();
},
};
// Move to slide 1 (from slide 0).
impl.showSlide_(1);
expect(showSlideSpy).to.be.calledWith(1);
expect(impl.snappingInProgress_).to.be.false;
//Move to slide 0 - via scrolling back.
impl.updateOnScroll_(1);
expect(showSlideSpy).to.be.calledWith(0);
expect(impl.slideIndex_).to.equal(0);
// Try scrolling Fwd and move to slide 1.
impl.updateOnScroll_(401);
expect(showSlideSpy).to.be.calledWith(1);
expect(impl.slideIndex_).to.equal(1);
impl.updateOnScroll_(700);
expect(showSlideSpy).to.be.calledWith(2);
expect(impl.slideIndex_).to.equal(2);
impl.showSlide_(4);
impl.updateOnScroll_(700);
expect(showSlideSpy).to.be.calledWith(4);
expect(impl.slideIndex_).to.equal(4);
});
});
it('should get the correct next slide index for a scrollLeft' , () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
// Already at slide 0;
expect(impl.getNextSlideIndex_(0)).to.equal(0);
expect(impl.getNextSlideIndex_(100)).to.equal(0);
expect(impl.getNextSlideIndex_(200)).to.equal(1);
expect(impl.getNextSlideIndex_(400)).to.equal(1);
impl.showSlide_(3);
expect(impl.getNextSlideIndex_(0)).to.equal(2);
expect(impl.getNextSlideIndex_(100)).to.equal(2);
expect(impl.getNextSlideIndex_(200)).to.equal(3);
expect(impl.getNextSlideIndex_(400)).to.equal(3);
expect(impl.getNextSlideIndex_(500)).to.equal(3);
expect(impl.getNextSlideIndex_(600)).to.equal(4);
expect(impl.getNextSlideIndex_(800)).to.equal(4);
impl.showSlide_(4);
expect(impl.getNextSlideIndex_(0)).to.equal(3);
expect(impl.getNextSlideIndex_(100)).to.equal(3);
expect(impl.getNextSlideIndex_(200)).to.equal(4);
expect(impl.getNextSlideIndex_(400)).to.equal(4);
});
});
it('should custom snap to the correct slide', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const animateScrollLeftSpy = sandbox.spy(impl, 'animateScrollLeft_');
impl.customSnap_(0);
expect(animateScrollLeftSpy).to.have.been.calledWith(0, 0);
impl.customSnap_(100);
expect(animateScrollLeftSpy).to.have.been.calledWith(100, 0);
impl.customSnap_(200);
expect(animateScrollLeftSpy).to.have.been.calledWith(200, 400);
impl.customSnap_(400);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 400);
impl.showSlide_(3);
impl.customSnap_(0);
expect(animateScrollLeftSpy).to.have.been.calledWith(0, 0);
impl.customSnap_(100);
expect(animateScrollLeftSpy).to.have.been.calledWith(100, 0);
impl.customSnap_(200);
expect(animateScrollLeftSpy).to.have.been.calledWith(200, 400);
impl.customSnap_(400);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 400);
impl.customSnap_(500);
expect(animateScrollLeftSpy).to.have.been.calledWith(500, 400);
impl.customSnap_(600);
expect(animateScrollLeftSpy).to.have.been.calledWith(600, 800);
impl.customSnap_(800);
expect(animateScrollLeftSpy).to.have.been.calledWith(800, 800);
impl.showSlide_(4);
impl.customSnap_(0);
expect(animateScrollLeftSpy).to.have.been.calledWith(0, 0);
impl.customSnap_(100);
expect(animateScrollLeftSpy).to.have.been.calledWith(100, 0);
impl.customSnap_(200);
expect(animateScrollLeftSpy).to.have.been.calledWith(200, 400);
impl.customSnap_(400);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 400);
impl.showSlide_(0);
impl.customSnap_(0, -1);
expect(animateScrollLeftSpy).to.have.been.calledWith(0, 0);
impl.customSnap_(0, 1);
expect(animateScrollLeftSpy).to.have.been.calledWith(0, 400);
impl.showSlide_(3);
impl.customSnap_(400, -1);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 0);
impl.customSnap_(400, 1);
expect(animateScrollLeftSpy).to.have.been.calledWith(0, 400);
impl.showSlide_(4);
impl.customSnap_(400, -1);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 0);
impl.customSnap_(400, 1);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 400);
});
});
it('should custom snap to the correct slide - special case', () => {
return getAmpSlideScroll(null, 2).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const animateScrollLeftSpy = sandbox.spy(impl, 'animateScrollLeft_');
impl.customSnap_(0, 1);
expect(animateScrollLeftSpy).to.have.been.calledWith(0, 400);
impl.showSlide_(1);
impl.customSnap_(400, -1);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 0);
});
});
it('should handle custom elastic scroll', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const customSnapSpy = sandbox.stub(impl, 'customSnap_', () => {
return {
then: cb => {
cb();
},
};
});
impl.handleCustomElasticScroll_(-10);
expect(impl.elasticScrollState_).to.equal(-1);
impl.previousScrollLeft_ = -10;
impl.handleCustomElasticScroll_(-5);
expect(customSnapSpy).to.have.been.calledWith(-5);
impl.previousScrollLeft_ = null;
impl.handleCustomElasticScroll_(410);
expect(impl.elasticScrollState_).to.equal(1);
impl.previousScrollLeft_ = 410;
impl.handleCustomElasticScroll_(405);
expect(customSnapSpy).to.have.been.calledWith(405);
});
});
it('should handle layout measures (orientation changes)', () => {
return getAmpSlideScroll().then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const getLayoutWidthSpy = sandbox.stub(impl, 'getLayoutWidth', () => {
return impl.slideWidth_ == 400 ? 200 : 400;
});
impl.onLayoutMeasure();
expect(getLayoutWidthSpy).to.have.been.called;
expect(impl.slideWidth_).to.equal(200);
impl.showSlide_(1);
expect(impl.slidesContainer_./*OK*/scrollLeft).to.equal(200);
impl.onLayoutMeasure();
expect(getLayoutWidthSpy.callCount).to.equal(2);
expect(impl.slideWidth_).to.equal(400);
expect(impl.slidesContainer_./*OK*/scrollLeft).to.equal(400);
});
});
describe('Looping', () => {
beforeEach(() => {
toggleExperiment(window, 'amp-slidescroll', true);
sandbox = sinon.sandbox.create();
});
afterEach(() => {
sandbox.restore();
});
it('should create container and wrappers and show initial slides', () => {
return getAmpSlideScroll(true).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
});
});
it('should show the correct slides when looping', () => {
return getAmpSlideScroll(true).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const updateInViewportSpy = sandbox.spy(impl, 'updateInViewport');
const scheduleLayoutSpy = sandbox.spy(impl, 'scheduleLayout');
const schedulePreloadSpy = sandbox.spy(impl, 'schedulePreload');
const hideRestOfTheSlidesSpy =
sandbox.spy(impl, 'hideRestOfTheSlides_');
const setControlsStateSpy = sandbox.spy(impl, 'setControlsState');
expect(impl.slides_[4].getAttribute('aria-hidden')).to.equal('true');
expect(impl.slides_[0].getAttribute('aria-hidden')).to.equal('false');
expect(impl.slides_[1].getAttribute('aria-hidden')).to.equal('true');
impl.showSlide_(1);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[0], false);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[1], true);
expect(updateInViewportSpy.callCount).to.equal(2);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.true;
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[0]);
expect(scheduleLayoutSpy).to.have.been.calledWith(impl.slides_[1]);
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[2]);
expect(scheduleLayoutSpy.callCount).to.equal(1);
expect(schedulePreloadSpy.callCount).to.equal(2);
expect(impl.slideIndex_).to.equal(1);
expect(impl.slidesContainer_./*OK*/scrollLeft)
.to.equal(impl.slideWidth_);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([0, 1, 2]);
expect(hideRestOfTheSlidesSpy.callCount).to.equal(1);
expect(setControlsStateSpy.callCount).to.equal(1);
expect(impl.slides_[0].getAttribute('aria-hidden')).to.equal('true');
expect(impl.slides_[1].getAttribute('aria-hidden')).to.equal('false');
expect(impl.slides_[2].getAttribute('aria-hidden')).to.equal('true');
impl.showSlide_(0);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[1], false);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[0], true);
expect(updateInViewportSpy.callCount).to.equal(4);
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.false;
expect(scheduleLayoutSpy).to.have.been.calledWith(impl.slides_[0]);
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[1]);
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[4]);
expect(scheduleLayoutSpy.callCount).to.equal(2);
expect(schedulePreloadSpy.callCount).to.equal(4);
expect(impl.slideIndex_).to.equal(0);
expect(impl.slidesContainer_./*OK*/scrollLeft).to.equal(400);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([4, 0, 1]);
expect(hideRestOfTheSlidesSpy.callCount).to.equal(2);
expect(setControlsStateSpy.callCount).to.equal(2);
expect(impl.slides_[4].getAttribute('aria-hidden')).to.equal('true');
expect(impl.slides_[0].getAttribute('aria-hidden')).to.equal('false');
expect(impl.slides_[1].getAttribute('aria-hidden')).to.equal('true');
impl.showSlide_(4);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[0], false);
expect(updateInViewportSpy).to.have.been.calledWith(
impl.slides_[4], true);
expect(updateInViewportSpy.callCount).to.equal(6);
expect(impl.slideWrappers_[3].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[3]);
expect(schedulePreloadSpy).to.have.been.calledWith(impl.slides_[0]);
expect(scheduleLayoutSpy).to.have.been.calledWith(impl.slides_[4]);
expect(scheduleLayoutSpy.callCount).to.equal(3);
expect(schedulePreloadSpy.callCount).to.equal(6);
expect(impl.slideIndex_).to.equal(4);
expect(impl.slidesContainer_./*OK*/scrollLeft)
.to.equal(impl.slideWidth_);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([3, 4, 0]);
expect(hideRestOfTheSlidesSpy.callCount).to.equal(3);
expect(setControlsStateSpy.callCount).to.equal(3);
expect(impl.slides_[3].getAttribute('aria-hidden')).to.equal('true');
expect(impl.slides_[4].getAttribute('aria-hidden')).to.equal('false');
expect(impl.slides_[0].getAttribute('aria-hidden')).to.equal('true');
});
});
it('should hide unwanted slides when looping', () => {
return getAmpSlideScroll(true).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const schedulePauseSpy = sandbox.spy(impl, 'schedulePause');
const hideRestOfTheSlidesSpy =
sandbox.spy(impl, 'hideRestOfTheSlides_');
impl.showSlide_(1);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([0, 1, 2]);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[3].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[0].style.order).to.equal('1');
expect(impl.slideWrappers_[1].style.order).to.equal('2');
expect(impl.slideWrappers_[2].style.order).to.equal('3');
expect(impl.slideWrappers_[3].style.order).to.equal('');
expect(impl.slideWrappers_[4].style.order).to.equal('');
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[4]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[0]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[2]);
expect(schedulePauseSpy.callCount).to.equal(3);
impl.showSlide_(0);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([4, 0, 1]);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[3].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[0].style.order).to.equal('2');
expect(impl.slideWrappers_[1].style.order).to.equal('3');
expect(impl.slideWrappers_[2].style.order).to.equal('');
expect(impl.slideWrappers_[3].style.order).to.equal('');
expect(impl.slideWrappers_[4].style.order).to.equal('1');
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[2]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[4]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[1]);
expect(schedulePauseSpy.callCount).to.equal(6);
impl.showSlide_(4);
expect(hideRestOfTheSlidesSpy).to.have.been.calledWith([3, 4, 0]);
expect(impl.slideWrappers_[0].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[1].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[2].classList.contains(SHOW_CLASS))
.to.be.false;
expect(impl.slideWrappers_[3].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[4].classList.contains(SHOW_CLASS))
.to.be.true;
expect(impl.slideWrappers_[0].style.order).to.equal('3');
expect(impl.slideWrappers_[1].style.order).to.equal('');
expect(impl.slideWrappers_[2].style.order).to.equal('');
expect(impl.slideWrappers_[3].style.order).to.equal('1');
expect(impl.slideWrappers_[4].style.order).to.equal('2');
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[3]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[0]);
expect(schedulePauseSpy).to.have.been.calledWith(impl.slides_[1]);
expect(schedulePauseSpy.callCount).to.equal(9);
});
});
it('should show/hide the correct controls when looping', () => {
return getAmpSlideScroll(true).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
impl.showSlide_(1);
expect(impl.hasNext()).to.be.true;
expect(impl.hasPrev()).to.be.true;
expect(impl.nextButton_.classList.contains('amp-disabled')).to.be.false;
expect(impl.prevButton_.classList.contains('amp-disabled')).to.be.false;
impl.showSlide_(0);
expect(impl.hasNext()).to.be.true;
expect(impl.hasPrev()).to.be.true;
expect(impl.nextButton_.classList.contains('amp-disabled')).to.be.false;
expect(impl.prevButton_.classList.contains('amp-disabled')).to.be.false;
impl.showSlide_(4);
expect(impl.hasNext()).to.be.true;
expect(impl.hasPrev()).to.be.true;
expect(impl.nextButton_.classList.contains('amp-disabled')).to.be.false;
expect(impl.prevButton_.classList.contains('amp-disabled')).to.be.false;
});
});
it('should set the correct scrollLeft when there is only one slide', () => {
return getAmpSlideScroll(true, 1).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
impl.noOfSlides_ = 1;
impl.showSlide_(0);
expect(impl.slidesContainer_./*OK*/scrollLeft).to.equal(0);
});
});
it('should update to the right slide on scroll', () => {
return getAmpSlideScroll(true).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const showSlideSpy = sandbox.spy(impl, 'showSlide_');
impl.vsync_ = {
mutate: cb => {
cb();
},
};
// Move to slide 1 (from slide 0).
impl.showSlide_(1);
expect(showSlideSpy).to.be.calledWith(1);
expect(impl.snappingInProgress_).to.be.false;
//Move to slide 0 - via scrolling back.
impl.updateOnScroll_(1);
expect(showSlideSpy).to.be.calledWith(0);
expect(impl.slideIndex_).to.equal(0);
// Try scrolling Fwd and move a little fwd to stay in the same slide.
impl.updateOnScroll_(401);
expect(showSlideSpy).to.be.calledWith(0);
expect(impl.slideIndex_).to.equal(0);
impl.updateOnScroll_(700);
expect(showSlideSpy).to.be.calledWith(1);
expect(impl.slideIndex_).to.equal(1);
impl.showSlide_(4);
impl.updateOnScroll_(700);
expect(showSlideSpy).to.be.calledWith(0);
expect(impl.slideIndex_).to.equal(0);
impl.updateOnScroll_(1);
expect(showSlideSpy).to.be.calledWith(4);
expect(impl.slideIndex_).to.equal(4);
});
});
it('should get the correct next slide index for a scrollLeft' , () => {
return getAmpSlideScroll(true).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
// Already at slide 0;
expect(impl.getNextSlideIndex_(0)).to.equal(4);
expect(impl.getNextSlideIndex_(100)).to.equal(4);
expect(impl.getNextSlideIndex_(200)).to.equal(0);
expect(impl.getNextSlideIndex_(400)).to.equal(0);
expect(impl.getNextSlideIndex_(500)).to.equal(0);
expect(impl.getNextSlideIndex_(600)).to.equal(1);
expect(impl.getNextSlideIndex_(800)).to.equal(1);
impl.showSlide_(3);
expect(impl.getNextSlideIndex_(0)).to.equal(2);
expect(impl.getNextSlideIndex_(100)).to.equal(2);
expect(impl.getNextSlideIndex_(200)).to.equal(3);
expect(impl.getNextSlideIndex_(400)).to.equal(3);
expect(impl.getNextSlideIndex_(500)).to.equal(3);
expect(impl.getNextSlideIndex_(600)).to.equal(4);
expect(impl.getNextSlideIndex_(800)).to.equal(4);
impl.showSlide_(4);
expect(impl.getNextSlideIndex_(0)).to.equal(3);
expect(impl.getNextSlideIndex_(100)).to.equal(3);
expect(impl.getNextSlideIndex_(200)).to.equal(4);
expect(impl.getNextSlideIndex_(400)).to.equal(4);
expect(impl.getNextSlideIndex_(500)).to.equal(4);
expect(impl.getNextSlideIndex_(600)).to.equal(0);
expect(impl.getNextSlideIndex_(800)).to.equal(0);
});
});
it('should custom snap to the correct slide', () => {
return getAmpSlideScroll(true).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const animateScrollLeftSpy = sandbox.spy(impl, 'animateScrollLeft_');
impl.customSnap_(0);
expect(animateScrollLeftSpy).to.have.been.calledWith(0, 0);
impl.customSnap_(100);
expect(animateScrollLeftSpy).to.have.been.calledWith(100, 0);
impl.customSnap_(200);
expect(animateScrollLeftSpy).to.have.been.calledWith(200, 400);
impl.customSnap_(400);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 400);
impl.customSnap_(500);
expect(animateScrollLeftSpy).to.have.been.calledWith(500, 400);
impl.customSnap_(600);
expect(animateScrollLeftSpy).to.have.been.calledWith(600, 800);
impl.customSnap_(800);
expect(animateScrollLeftSpy).to.have.been.calledWith(800, 800);
impl.customSnap_(400, -1);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 0);
impl.customSnap_(400, 1);
expect(animateScrollLeftSpy).to.have.been.calledWith(400, 800);
});
});
it('should go to the correct slide on button click', () => {
return getAmpSlideScroll(true).then(obj => {
const ampSlideScroll = obj.ampSlideScroll;
const impl = ampSlideScroll.implementation_;
const showSlideSpy = sandbox.spy(impl, 'showSlide_');
impl.goCallback(-1);
expect(showSlideSpy).to.have.been.calledWith(4);
expect(showSlideSpy.callCount).to.equal(1);
impl.goCallback(1);
expect(showSlideSpy).to.have.been.calledWith(0);
expect(showSlideSpy.callCount).to.equal(2);
impl.goCallback(1);
expect(showSlideSpy).to.have.been.calledWith(1);
expect(showSlideSpy.callCount).to.equal(3);
});
});
});
});