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import SelectorEngine from '../../../src/dom/selector-engine'
/** Test helpers */
import { getFixture, clearFixture } from '../../helpers/fixture'
describe('SelectorEngine', () => {
let fixtureEl
beforeAll(() => {
fixtureEl = getFixture()
})
afterEach(() => {
clearFixture()
})
describe('matches', () => {
it('should return matched elements', () => {
fixtureEl.innerHTML = '<div></div>'
expect(SelectorEngine.matches(fixtureEl, 'div')).toEqual(true)
})
})
describe('find', () => {
it('should find elements', () => {
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
expect(SelectorEngine.find('div', fixtureEl)).toEqual([div])
})
it('should find elements globaly', () => {
fixtureEl.innerHTML = '<div id="test"></div>'
const div = fixtureEl.querySelector('#test')
expect(SelectorEngine.find('#test')).toEqual([div])
})
it('should handle :scope selectors', () => {
fixtureEl.innerHTML = `<ul>
<li></li>
<li>
<a href="#" class="active">link</a>
</li>
<li></li>
</ul>`
const listEl = fixtureEl.querySelector('ul')
const aActive = fixtureEl.querySelector('.active')
expect(SelectorEngine.find(':scope > li > .active', listEl)).toEqual([aActive])
})
})
describe('findOne', () => {
it('should return one element', () => {
fixtureEl.innerHTML = '<div id="test"></div>'
const div = fixtureEl.querySelector('#test')
expect(SelectorEngine.findOne('#test')).toEqual(div)
})
})
describe('children', () => {
it('should find children', () => {
fixtureEl.innerHTML = `<ul>
<li></li>
<li></li>
<li></li>
</ul>`
const list = fixtureEl.querySelector('ul')
const liList = [].concat(...fixtureEl.querySelectorAll('li'))
const result = SelectorEngine.children(list, 'li')
expect(result).toEqual(liList)
})
})
describe('parents', () => {
it('should return parents', () => {
expect(SelectorEngine.parents(fixtureEl, 'body').length).toEqual(1)
})
})
describe('prev', () => {
it('should return previous element', () => {
fixtureEl.innerHTML = '<div class="test"></div><button class="btn"></button>'
const btn = fixtureEl.querySelector('.btn')
const divTest = fixtureEl.querySelector('.test')
expect(SelectorEngine.prev(btn, '.test')).toEqual([divTest])
})
it('should return previous element with an extra element between', () => {
fixtureEl.innerHTML = [
'<div class="test"></div>',
'<span></span>',
'<button class="btn"></button>'
].join('')
const btn = fixtureEl.querySelector('.btn')
const divTest = fixtureEl.querySelector('.test')
expect(SelectorEngine.prev(btn, '.test')).toEqual([divTest])
})
it('should return previous element with comments or text nodes between', () => {
fixtureEl.innerHTML = [
'<div class="test"></div>',
'<div class="test"></div>',
'<!-- Comment-->',
'Text',
'<button class="btn"></button>'
].join('')
const btn = fixtureEl.querySelector('.btn')
const divTest = fixtureEl.querySelectorAll('.test')[1]
expect(SelectorEngine.prev(btn, '.test')).toEqual([divTest])
})
})
describe('next', () => {
it('should return next element', () => {
fixtureEl.innerHTML = '<div class="test"></div><button class="btn"></button>'
const btn = fixtureEl.querySelector('.btn')
const divTest = fixtureEl.querySelector('.test')
expect(SelectorEngine.next(divTest, '.btn')).toEqual([btn])
})
it('should return next element with an extra element between', () => {
fixtureEl.innerHTML = [
'<div class="test"></div>',
'<span></span>',
'<button class="btn"></button>'
].join('')
const btn = fixtureEl.querySelector('.btn')
const divTest = fixtureEl.querySelector('.test')
expect(SelectorEngine.next(divTest, '.btn')).toEqual([btn])
})
it('should return next element with comments or text nodes between', () => {
fixtureEl.innerHTML = [
'<div class="test"></div>',
'<!-- Comment-->',
'Text',
'<button class="btn"></button>',
'<button class="btn"></button>'
].join('')
const btn = fixtureEl.querySelector('.btn')
const divTest = fixtureEl.querySelector('.test')
expect(SelectorEngine.next(divTest, '.btn')).toEqual([btn])
})
})
})
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