699 lines
25 KiB
JavaScript
699 lines
25 KiB
JavaScript
import ScrollSpy from '../../src/scrollspy'
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import Manipulator from '../../src/dom/manipulator'
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/** Test helpers */
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import { getFixture, clearFixture, createEvent, jQueryMock } from '../helpers/fixture'
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describe('ScrollSpy', () => {
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let fixtureEl
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const testElementIsActiveAfterScroll = ({ elementSelector, targetSelector, contentEl, scrollSpy, spy, cb }) => {
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const element = fixtureEl.querySelector(elementSelector)
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const target = fixtureEl.querySelector(targetSelector)
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// add top padding to fix Chrome on Android failures
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const paddingTop = 5
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const scrollHeight = Math.ceil(contentEl.scrollTop + Manipulator.position(target).top) + paddingTop
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function listener() {
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expect(element.classList.contains('active')).toEqual(true)
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contentEl.removeEventListener('scroll', listener)
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expect(scrollSpy._process).toHaveBeenCalled()
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spy.calls.reset()
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cb()
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}
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contentEl.addEventListener('scroll', listener)
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contentEl.scrollTop = scrollHeight
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}
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beforeAll(() => {
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fixtureEl = getFixture()
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})
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afterEach(() => {
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clearFixture()
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})
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describe('VERSION', () => {
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it('should return plugin version', () => {
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expect(ScrollSpy.VERSION).toEqual(jasmine.any(String))
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})
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})
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describe('Default', () => {
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it('should return plugin default config', () => {
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expect(ScrollSpy.Default).toEqual(jasmine.any(Object))
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})
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})
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describe('DATA_KEY', () => {
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it('should return plugin data key', () => {
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expect(ScrollSpy.DATA_KEY).toEqual('bs.scrollspy')
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})
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})
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describe('constructor', () => {
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it('should take care of element either passed as a CSS selector or DOM element', () => {
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fixtureEl.innerHTML = '<nav id="navigation"></nav><div class="content"></div>'
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const sSpyEl = fixtureEl.querySelector('#navigation')
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const sSpyBySelector = new ScrollSpy('#navigation')
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const sSpyByElement = new ScrollSpy(sSpyEl)
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expect(sSpyBySelector._element).toEqual(sSpyEl)
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expect(sSpyByElement._element).toEqual(sSpyEl)
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})
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it('should generate an id when there is not one', () => {
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fixtureEl.innerHTML = [
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'<nav></nav>',
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'<div class="content"></div>'
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].join('')
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const navEl = fixtureEl.querySelector('nav')
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const scrollSpy = new ScrollSpy(fixtureEl.querySelector('.content'), {
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target: navEl
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})
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expect(scrollSpy).toBeDefined()
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expect(navEl.getAttribute('id')).not.toEqual(null)
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})
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it('should not process element without target', () => {
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fixtureEl.innerHTML = [
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'<nav id="navigation" class="navbar">',
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' <ul class="navbar-nav">',
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' <li class="nav-item"><a class="nav-link active" id="one-link" href="#">One</a></li>',
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' <li class="nav-item"><a class="nav-link" id="two-link" href="#two">Two</a></li>',
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' <li class="nav-item"><a class="nav-link" id="three-link" href="#three">Three</a></li>',
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' </ul>',
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'</nav>',
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'<div id="content" style="height: 200px; overflow-y: auto;">',
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' <div id="two" style="height: 300px;"></div>',
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' <div id="three" style="height: 10px;"></div>',
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'</div>'
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].join('')
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const scrollSpy = new ScrollSpy(fixtureEl.querySelector('#content'), {
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target: '#navigation'
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})
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expect(scrollSpy._targets.length).toEqual(2)
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})
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it('should only switch "active" class on current target', done => {
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fixtureEl.innerHTML = [
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'<div id="root" class="active" style="display: block">',
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' <div class="topbar">',
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' <div class="topbar-inner">',
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' <div class="container" id="ss-target">',
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' <ul class="nav">',
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' <li class="nav-item"><a href="#masthead">Overview</a></li>',
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' <li class="nav-item"><a href="#detail">Detail</a></li>',
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' </ul>',
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' </div>',
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' </div>',
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' </div>',
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' <div id="scrollspy-example" style="height: 100px; overflow: auto;">',
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' <div style="height: 200px;">',
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' <h4 id="masthead">Overview</h4>',
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' <p style="height: 200px;"></p>',
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' </div>',
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' <div style="height: 200px;">',
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' <h4 id="detail">Detail</h4>',
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' <p style="height: 200px;"></p>',
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' </div>',
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' </div>',
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'</div>'
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].join('')
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const scrollSpyEl = fixtureEl.querySelector('#scrollspy-example')
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const rootEl = fixtureEl.querySelector('#root')
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const scrollSpy = new ScrollSpy(scrollSpyEl, {
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target: 'ss-target'
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})
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spyOn(scrollSpy, '_process').and.callThrough()
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scrollSpyEl.addEventListener('scroll', () => {
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expect(rootEl.classList.contains('active')).toEqual(true)
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expect(scrollSpy._process).toHaveBeenCalled()
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done()
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})
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scrollSpyEl.scrollTop = 350
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})
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it('should only switch "active" class on current target specified w element', done => {
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fixtureEl.innerHTML = [
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'<div id="root" class="active" style="display: block">',
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' <div class="topbar">',
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' <div class="topbar-inner">',
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' <div class="container" id="ss-target">',
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' <ul class="nav">',
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' <li class="nav-item"><a href="#masthead">Overview</a></li>',
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' <li class="nav-item"><a href="#detail">Detail</a></li>',
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' </ul>',
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' </div>',
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' </div>',
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' </div>',
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' <div id="scrollspy-example" style="height: 100px; overflow: auto;">',
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' <div style="height: 200px;">',
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' <h4 id="masthead">Overview</h4>',
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' <p style="height: 200px;"></p>',
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' </div>',
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' <div style="height: 200px;">',
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' <h4 id="detail">Detail</h4>',
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' <p style="height: 200px;"></p>',
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' </div>',
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' </div>',
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'</div>'
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].join('')
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const scrollSpyEl = fixtureEl.querySelector('#scrollspy-example')
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const rootEl = fixtureEl.querySelector('#root')
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const scrollSpy = new ScrollSpy(scrollSpyEl, {
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target: fixtureEl.querySelector('#ss-target')
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})
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spyOn(scrollSpy, '_process').and.callThrough()
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scrollSpyEl.addEventListener('scroll', () => {
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expect(rootEl.classList.contains('active')).toEqual(true)
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expect(scrollSpy._process).toHaveBeenCalled()
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done()
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})
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scrollSpyEl.scrollTop = 350
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})
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it('should correctly select middle navigation option when large offset is used', done => {
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fixtureEl.innerHTML = [
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'<div id="header" style="height: 500px;"></div>',
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'<nav id="navigation" class="navbar">',
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' <ul class="navbar-nav">',
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' <li class="nav-item"><a class="nav-link active" id="one-link" href="#one">One</a></li>',
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' <li class="nav-item"><a class="nav-link" id="two-link" href="#two">Two</a></li>',
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' <li class="nav-item"><a class="nav-link" id="three-link" href="#three">Three</a></li>',
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' </ul>',
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'</nav>',
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'<div id="content" style="height: 200px; overflow-y: auto;">',
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' <div id="one" style="height: 500px;"></div>',
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' <div id="two" style="height: 300px;"></div>',
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' <div id="three" style="height: 10px;"></div>',
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'</div>'
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].join('')
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const contentEl = fixtureEl.querySelector('#content')
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const scrollSpy = new ScrollSpy(contentEl, {
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target: '#navigation',
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offset: Manipulator.position(contentEl).top
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})
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spyOn(scrollSpy, '_process').and.callThrough()
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contentEl.addEventListener('scroll', () => {
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expect(fixtureEl.querySelector('#one-link').classList.contains('active')).toEqual(false)
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expect(fixtureEl.querySelector('#two-link').classList.contains('active')).toEqual(true)
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expect(fixtureEl.querySelector('#three-link').classList.contains('active')).toEqual(false)
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expect(scrollSpy._process).toHaveBeenCalled()
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done()
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})
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contentEl.scrollTop = 550
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})
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it('should add the active class to the correct element', done => {
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fixtureEl.innerHTML = [
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'<nav class="navbar">',
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' <ul class="nav">',
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' <li class="nav-item"><a class="nav-link" id="a-1" href="#div-1">div 1</a></li>',
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' <li class="nav-item"><a class="nav-link" id="a-2" href="#div-2">div 2</a></li>',
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' </ul>',
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'</nav>',
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'<div class="content" style="overflow: auto; height: 50px">',
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' <div id="div-1" style="height: 100px; padding: 0; margin: 0">div 1</div>',
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' <div id="div-2" style="height: 200px; padding: 0; margin: 0">div 2</div>',
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'</div>'
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].join('')
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const contentEl = fixtureEl.querySelector('.content')
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const scrollSpy = new ScrollSpy(contentEl, {
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offset: 0,
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target: '.navbar'
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})
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const spy = spyOn(scrollSpy, '_process').and.callThrough()
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testElementIsActiveAfterScroll({
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elementSelector: '#a-1',
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targetSelector: '#div-1',
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contentEl,
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scrollSpy,
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spy,
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cb: () => {
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testElementIsActiveAfterScroll({
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elementSelector: '#a-2',
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targetSelector: '#div-2',
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contentEl,
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scrollSpy,
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spy,
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cb: () => done()
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})
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}
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})
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})
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it('should add the active class to the correct element (nav markup)', done => {
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fixtureEl.innerHTML = [
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'<nav class="navbar">',
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' <nav class="nav">',
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' <a class="nav-link" id="a-1" href="#div-1">div 1</a>',
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' <a class="nav-link" id="a-2" href="#div-2">div 2</a>',
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' </nav>',
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'</nav>',
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'<div class="content" style="overflow: auto; height: 50px">',
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' <div id="div-1" style="height: 100px; padding: 0; margin: 0">div 1</div>',
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' <div id="div-2" style="height: 200px; padding: 0; margin: 0">div 2</div>',
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'</div>'
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].join('')
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const contentEl = fixtureEl.querySelector('.content')
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const scrollSpy = new ScrollSpy(contentEl, {
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offset: 0,
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target: '.navbar'
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})
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const spy = spyOn(scrollSpy, '_process').and.callThrough()
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testElementIsActiveAfterScroll({
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elementSelector: '#a-1',
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targetSelector: '#div-1',
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contentEl,
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scrollSpy,
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spy,
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cb: () => {
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testElementIsActiveAfterScroll({
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elementSelector: '#a-2',
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targetSelector: '#div-2',
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contentEl,
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scrollSpy,
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spy,
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cb: () => done()
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})
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}
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})
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})
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it('should add the active class to the correct element (list-group markup)', done => {
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fixtureEl.innerHTML = [
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'<nav class="navbar">',
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' <div class="list-group">',
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' <a class="list-group-item" id="a-1" href="#div-1">div 1</a>',
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' <a class="list-group-item" id="a-2" href="#div-2">div 2</a>',
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' </div>',
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'</nav>',
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'<div class="content" style="overflow: auto; height: 50px">',
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' <div id="div-1" style="height: 100px; padding: 0; margin: 0">div 1</div>',
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' <div id="div-2" style="height: 200px; padding: 0; margin: 0">div 2</div>',
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'</div>'
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].join('')
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const contentEl = fixtureEl.querySelector('.content')
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const scrollSpy = new ScrollSpy(contentEl, {
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offset: 0,
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target: '.navbar'
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})
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const spy = spyOn(scrollSpy, '_process').and.callThrough()
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testElementIsActiveAfterScroll({
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elementSelector: '#a-1',
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targetSelector: '#div-1',
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contentEl,
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scrollSpy,
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spy,
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cb: () => {
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testElementIsActiveAfterScroll({
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elementSelector: '#a-2',
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targetSelector: '#div-2',
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contentEl,
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scrollSpy,
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spy,
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cb: () => done()
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})
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}
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})
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})
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it('should clear selection if above the first section', done => {
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fixtureEl.innerHTML = [
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'<div id="header" style="height: 500px;"></div>',
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'<nav id="navigation" class="navbar">',
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' <ul class="navbar-nav">',
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' <li class="nav-item"><a id="one-link" class="nav-link active" href="#one">One</a></li>',
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' <li class="nav-item"><a id="two-link" class="nav-link" href="#two">Two</a></li>',
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' <li class="nav-item"><a id="three-link" class="nav-link" href="#three">Three</a></li>',
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' </ul>',
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'</nav>',
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'<div id="content" style="height: 200px; overflow-y: auto;">',
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' <div id="spacer" style="height: 100px;"></div>',
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' <div id="one" style="height: 100px;"></div>',
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' <div id="two" style="height: 100px;"></div>',
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' <div id="three" style="height: 100px;"></div>',
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' <div id="spacer" style="height: 100px;"></div>',
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'</div>'
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].join('')
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const contentEl = fixtureEl.querySelector('#content')
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const scrollSpy = new ScrollSpy(contentEl, {
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target: '#navigation',
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offset: Manipulator.position(contentEl).top
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})
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const spy = spyOn(scrollSpy, '_process').and.callThrough()
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let firstTime = true
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contentEl.addEventListener('scroll', () => {
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const active = fixtureEl.querySelector('.active')
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expect(spy).toHaveBeenCalled()
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spy.calls.reset()
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if (firstTime) {
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expect(fixtureEl.querySelectorAll('.active').length).toEqual(1)
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expect(active.getAttribute('id')).toEqual('two-link')
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firstTime = false
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contentEl.scrollTop = 0
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} else {
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expect(active).toBeNull()
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done()
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}
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})
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contentEl.scrollTop = 201
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})
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it('should not clear selection if above the first section and first section is at the top', done => {
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fixtureEl.innerHTML = [
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'<div id="header" style="height: 500px;"></div>',
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'<nav id="navigation" class="navbar">',
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' <ul class="navbar-nav">',
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' <li class="nav-item"><a id="one-link" class="nav-link active" href="#one">One</a></li>',
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' <li class="nav-item"><a id="two-link" class="nav-link" href="#two">Two</a></li>',
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' <li class="nav-item"><a id="three-link" class="nav-link" href="#three">Three</a></li>',
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' </ul>',
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'</nav>',
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'<div id="content" style="height: 200px; overflow-y: auto;">',
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' <div id="one" style="height: 100px;"></div>',
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' <div id="two" style="height: 100px;"></div>',
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' <div id="three" style="height: 100px;"></div>',
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' <div id="spacer" style="height: 100px;"></div>',
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'</div>'
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].join('')
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const negativeHeight = -10
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const startOfSectionTwo = 101
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const contentEl = fixtureEl.querySelector('#content')
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const scrollSpy = new ScrollSpy(contentEl, {
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target: '#navigation',
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offset: contentEl.offsetTop
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})
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const spy = spyOn(scrollSpy, '_process').and.callThrough()
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let firstTime = true
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contentEl.addEventListener('scroll', () => {
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const active = fixtureEl.querySelector('.active')
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expect(spy).toHaveBeenCalled()
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spy.calls.reset()
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if (firstTime) {
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expect(fixtureEl.querySelectorAll('.active').length).toEqual(1)
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expect(active.getAttribute('id')).toEqual('two-link')
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firstTime = false
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contentEl.scrollTop = negativeHeight
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} else {
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expect(fixtureEl.querySelectorAll('.active').length).toEqual(1)
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expect(active.getAttribute('id')).toEqual('one-link')
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done()
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}
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})
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contentEl.scrollTop = startOfSectionTwo
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})
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it('should correctly select navigation element on backward scrolling when each target section height is 100%', done => {
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fixtureEl.innerHTML = [
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'<nav class="navbar">',
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' <ul class="nav">',
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' <li class="nav-item"><a id="li-100-1" class="nav-link" href="#div-100-1">div 1</a></li>',
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' <li class="nav-item"><a id="li-100-2" class="nav-link" href="#div-100-2">div 2</a></li>',
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' <li class="nav-item"><a id="li-100-3" class="nav-link" href="#div-100-3">div 3</a></li>',
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' <li class="nav-item"><a id="li-100-4" class="nav-link" href="#div-100-4">div 4</a></li>',
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' <li class="nav-item"><a id="li-100-5" class="nav-link" href="#div-100-5">div 5</a></li>',
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' </ul>',
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'</nav>',
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'<div class="content" style="position: relative; overflow: auto; height: 100px">',
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' <div id="div-100-1" style="position: relative; height: 100%; padding: 0; margin: 0">div 1</div>',
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' <div id="div-100-2" style="position: relative; height: 100%; padding: 0; margin: 0">div 2</div>',
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' <div id="div-100-3" style="position: relative; height: 100%; padding: 0; margin: 0">div 3</div>',
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' <div id="div-100-4" style="position: relative; height: 100%; padding: 0; margin: 0">div 4</div>',
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' <div id="div-100-5" style="position: relative; height: 100%; padding: 0; margin: 0">div 5</div>',
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'</div>'
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].join('')
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const contentEl = fixtureEl.querySelector('.content')
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const scrollSpy = new ScrollSpy(contentEl, {
|
|
offset: 0,
|
|
target: '.navbar'
|
|
})
|
|
const spy = spyOn(scrollSpy, '_process').and.callThrough()
|
|
|
|
testElementIsActiveAfterScroll({
|
|
elementSelector: '#li-100-5',
|
|
targetSelector: '#div-100-5',
|
|
scrollSpy,
|
|
spy,
|
|
contentEl,
|
|
cb() {
|
|
contentEl.scrollTop = 0
|
|
testElementIsActiveAfterScroll({
|
|
elementSelector: '#li-100-4',
|
|
targetSelector: '#div-100-4',
|
|
scrollSpy,
|
|
spy,
|
|
contentEl,
|
|
cb() {
|
|
contentEl.scrollTop = 0
|
|
testElementIsActiveAfterScroll({
|
|
elementSelector: '#li-100-3',
|
|
targetSelector: '#div-100-3',
|
|
scrollSpy,
|
|
spy,
|
|
contentEl,
|
|
cb() {
|
|
contentEl.scrollTop = 0
|
|
testElementIsActiveAfterScroll({
|
|
elementSelector: '#li-100-2',
|
|
targetSelector: '#div-100-2',
|
|
scrollSpy,
|
|
spy,
|
|
contentEl,
|
|
cb() {
|
|
contentEl.scrollTop = 0
|
|
testElementIsActiveAfterScroll({
|
|
elementSelector: '#li-100-1',
|
|
targetSelector: '#div-100-1',
|
|
scrollSpy,
|
|
spy,
|
|
contentEl,
|
|
cb: done
|
|
})
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
})
|
|
})
|
|
|
|
it('should allow passed in option offset method: offset', () => {
|
|
fixtureEl.innerHTML = [
|
|
'<nav class="navbar">',
|
|
' <ul class="nav">',
|
|
' <li class="nav-item"><a id="li-jsm-1" class="nav-link" href="#div-jsm-1">div 1</a></li>',
|
|
' <li class="nav-item"><a id="li-jsm-2" class="nav-link" href="#div-jsm-2">div 2</a></li>',
|
|
' <li class="nav-item"><a id="li-jsm-3" class="nav-link" href="#div-jsm-3">div 3</a></li>',
|
|
' </ul>',
|
|
'</nav>',
|
|
'<div class="content" style="position: relative; overflow: auto; height: 100px">',
|
|
' <div id="div-jsm-1" style="position: relative; height: 200px; padding: 0; margin: 0">div 1</div>',
|
|
' <div id="div-jsm-2" style="position: relative; height: 150px; padding: 0; margin: 0">div 2</div>',
|
|
' <div id="div-jsm-3" style="position: relative; height: 250px; padding: 0; margin: 0">div 3</div>',
|
|
'</div>'
|
|
].join('')
|
|
|
|
const contentEl = fixtureEl.querySelector('.content')
|
|
const targetEl = fixtureEl.querySelector('#div-jsm-2')
|
|
const scrollSpy = new ScrollSpy(contentEl, {
|
|
target: '.navbar',
|
|
offset: 0,
|
|
method: 'offset'
|
|
})
|
|
|
|
expect(scrollSpy._offsets[1]).toEqual(Manipulator.offset(targetEl).top)
|
|
expect(scrollSpy._offsets[1]).not.toEqual(Manipulator.position(targetEl).top)
|
|
})
|
|
|
|
it('should allow passed in option offset method: position', () => {
|
|
fixtureEl.innerHTML = [
|
|
'<nav class="navbar">',
|
|
' <ul class="nav">',
|
|
' <li class="nav-item"><a id="li-jsm-1" class="nav-link" href="#div-jsm-1">div 1</a></li>',
|
|
' <li class="nav-item"><a id="li-jsm-2" class="nav-link" href="#div-jsm-2">div 2</a></li>',
|
|
' <li class="nav-item"><a id="li-jsm-3" class="nav-link" href="#div-jsm-3">div 3</a></li>',
|
|
' </ul>',
|
|
'</nav>',
|
|
'<div class="content" style="position: relative; overflow: auto; height: 100px">',
|
|
' <div id="div-jsm-1" style="position: relative; height: 200px; padding: 0; margin: 0">div 1</div>',
|
|
' <div id="div-jsm-2" style="position: relative; height: 150px; padding: 0; margin: 0">div 2</div>',
|
|
' <div id="div-jsm-3" style="position: relative; height: 250px; padding: 0; margin: 0">div 3</div>',
|
|
'</div>'
|
|
].join('')
|
|
|
|
const contentEl = fixtureEl.querySelector('.content')
|
|
const targetEl = fixtureEl.querySelector('#div-jsm-2')
|
|
const scrollSpy = new ScrollSpy(contentEl, {
|
|
target: '.navbar',
|
|
offset: 0,
|
|
method: 'position'
|
|
})
|
|
|
|
expect(scrollSpy._offsets[1]).not.toEqual(Manipulator.offset(targetEl).top)
|
|
expect(scrollSpy._offsets[1]).toEqual(Manipulator.position(targetEl).top)
|
|
})
|
|
})
|
|
|
|
describe('dispose', () => {
|
|
it('should dispose a scrollspy', () => {
|
|
fixtureEl.innerHTML = '<div style="display: none;"></div>'
|
|
|
|
const divEl = fixtureEl.querySelector('div')
|
|
spyOn(divEl, 'addEventListener').and.callThrough()
|
|
spyOn(divEl, 'removeEventListener').and.callThrough()
|
|
|
|
const scrollSpy = new ScrollSpy(divEl)
|
|
expect(divEl.addEventListener).toHaveBeenCalledWith('scroll', jasmine.any(Function), jasmine.any(Boolean))
|
|
|
|
scrollSpy.dispose()
|
|
|
|
expect(divEl.removeEventListener).toHaveBeenCalledWith('scroll', jasmine.any(Function), jasmine.any(Boolean))
|
|
})
|
|
})
|
|
|
|
describe('jQueryInterface', () => {
|
|
it('should create a scrollspy', () => {
|
|
fixtureEl.innerHTML = '<div></div>'
|
|
|
|
const div = fixtureEl.querySelector('div')
|
|
|
|
jQueryMock.fn.scrollspy = ScrollSpy.jQueryInterface
|
|
jQueryMock.elements = [div]
|
|
|
|
jQueryMock.fn.scrollspy.call(jQueryMock)
|
|
|
|
expect(ScrollSpy.getInstance(div)).toBeDefined()
|
|
})
|
|
|
|
it('should create a scrollspy with given config', () => {
|
|
fixtureEl.innerHTML = '<div></div>'
|
|
|
|
const div = fixtureEl.querySelector('div')
|
|
|
|
jQueryMock.fn.scrollspy = ScrollSpy.jQueryInterface
|
|
jQueryMock.elements = [div]
|
|
|
|
jQueryMock.fn.scrollspy.call(jQueryMock, { offset: 15 })
|
|
spyOn(ScrollSpy.prototype, 'constructor')
|
|
expect(ScrollSpy.prototype.constructor).not.toHaveBeenCalledWith(div, { offset: 15 })
|
|
|
|
const scrollspy = ScrollSpy.getInstance(div)
|
|
expect(scrollspy).toBeDefined()
|
|
expect(scrollspy._config.offset).toBe(15)
|
|
})
|
|
|
|
it('should not re create a scrollspy', () => {
|
|
fixtureEl.innerHTML = '<div></div>'
|
|
|
|
const div = fixtureEl.querySelector('div')
|
|
const scrollSpy = new ScrollSpy(div)
|
|
|
|
jQueryMock.fn.scrollspy = ScrollSpy.jQueryInterface
|
|
jQueryMock.elements = [div]
|
|
|
|
jQueryMock.fn.scrollspy.call(jQueryMock)
|
|
|
|
expect(ScrollSpy.getInstance(div)).toEqual(scrollSpy)
|
|
})
|
|
|
|
it('should call a scrollspy method', () => {
|
|
fixtureEl.innerHTML = '<div></div>'
|
|
|
|
const div = fixtureEl.querySelector('div')
|
|
const scrollSpy = new ScrollSpy(div)
|
|
|
|
spyOn(scrollSpy, 'refresh')
|
|
|
|
jQueryMock.fn.scrollspy = ScrollSpy.jQueryInterface
|
|
jQueryMock.elements = [div]
|
|
|
|
jQueryMock.fn.scrollspy.call(jQueryMock, 'refresh')
|
|
|
|
expect(ScrollSpy.getInstance(div)).toEqual(scrollSpy)
|
|
expect(scrollSpy.refresh).toHaveBeenCalled()
|
|
})
|
|
|
|
it('should throw error on undefined method', () => {
|
|
fixtureEl.innerHTML = '<div></div>'
|
|
|
|
const div = fixtureEl.querySelector('div')
|
|
const action = 'undefinedMethod'
|
|
|
|
jQueryMock.fn.scrollspy = ScrollSpy.jQueryInterface
|
|
jQueryMock.elements = [div]
|
|
|
|
expect(() => {
|
|
jQueryMock.fn.scrollspy.call(jQueryMock, action)
|
|
}).toThrowError(TypeError, `No method named "${action}"`)
|
|
})
|
|
})
|
|
|
|
describe('getInstance', () => {
|
|
it('should return scrollspy instance', () => {
|
|
fixtureEl.innerHTML = '<div></div>'
|
|
|
|
const div = fixtureEl.querySelector('div')
|
|
const scrollSpy = new ScrollSpy(div)
|
|
|
|
expect(ScrollSpy.getInstance(div)).toEqual(scrollSpy)
|
|
expect(ScrollSpy.getInstance(div)).toBeInstanceOf(ScrollSpy)
|
|
})
|
|
|
|
it('should return null if there is no instance', () => {
|
|
expect(ScrollSpy.getInstance(fixtureEl)).toEqual(null)
|
|
})
|
|
})
|
|
|
|
describe('event handler', () => {
|
|
it('should create scrollspy on window load event', () => {
|
|
fixtureEl.innerHTML = '<div data-bs-spy="scroll"></div>'
|
|
|
|
const scrollSpyEl = fixtureEl.querySelector('div')
|
|
|
|
window.dispatchEvent(createEvent('load'))
|
|
|
|
expect(ScrollSpy.getInstance(scrollSpyEl)).not.toBeNull()
|
|
})
|
|
})
|
|
})
|