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Bootstrap/js/tests/unit/util/index.spec.js

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import * as Util from '../../../src/util/index'
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/** Test helpers */
import { getFixture, clearFixture } from '../../helpers/fixture'
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describe('Util', () => {
let fixtureEl
beforeAll(() => {
fixtureEl = getFixture()
})
afterEach(() => {
clearFixture()
})
describe('getUID', () => {
it('should generate uid', () => {
const uid = Util.getUID('bs')
const uid2 = Util.getUID('bs')
expect(uid).not.toEqual(uid2)
})
})
describe('getSelectorFromElement', () => {
it('should get selector from data-target', () => {
fixtureEl.innerHTML = [
'<div id="test" data-target=".target"></div>',
'<div class="target"></div>'
].join('')
const testEl = fixtureEl.querySelector('#test')
expect(Util.getSelectorFromElement(testEl)).toEqual('.target')
})
it('should get selector from href if no data-target set', () => {
fixtureEl.innerHTML = [
'<a id="test" href=".target"></a>',
'<div class="target"></div>'
].join('')
const testEl = fixtureEl.querySelector('#test')
expect(Util.getSelectorFromElement(testEl)).toEqual('.target')
})
it('should get selector from href if data-target equal to #', () => {
fixtureEl.innerHTML = [
'<a id="test" data-target="#" href=".target"></a>',
'<div class="target"></div>'
].join('')
const testEl = fixtureEl.querySelector('#test')
expect(Util.getSelectorFromElement(testEl)).toEqual('.target')
})
it('should return null if selector not found', () => {
fixtureEl.innerHTML = '<a id="test" href=".target"></a>'
const testEl = fixtureEl.querySelector('#test')
expect(Util.getSelectorFromElement(testEl)).toBeNull()
})
it('should return null if no selector', () => {
fixtureEl.innerHTML = '<div></div>'
const testEl = fixtureEl.querySelector('div')
expect(Util.getSelectorFromElement(testEl)).toBeNull()
})
})
describe('getElementFromSelector', () => {
it('should get element from data-target', () => {
fixtureEl.innerHTML = [
'<div id="test" data-target=".target"></div>',
'<div class="target"></div>'
].join('')
const testEl = fixtureEl.querySelector('#test')
expect(Util.getElementFromSelector(testEl)).toEqual(fixtureEl.querySelector('.target'))
})
it('should get element from href if no data-target set', () => {
fixtureEl.innerHTML = [
'<a id="test" href=".target"></a>',
'<div class="target"></div>'
].join('')
const testEl = fixtureEl.querySelector('#test')
expect(Util.getElementFromSelector(testEl)).toEqual(fixtureEl.querySelector('.target'))
})
it('should return null if element not found', () => {
fixtureEl.innerHTML = '<a id="test" href=".target"></a>'
const testEl = fixtureEl.querySelector('#test')
expect(Util.getElementFromSelector(testEl)).toBeNull()
})
it('should return null if no selector', () => {
fixtureEl.innerHTML = '<div></div>'
const testEl = fixtureEl.querySelector('div')
expect(Util.getElementFromSelector(testEl)).toBeNull()
})
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})
describe('getTransitionDurationFromElement', () => {
it('should get transition from element', () => {
fixtureEl.innerHTML = '<div style="transition: all 300ms ease-out;"></div>'
expect(Util.getTransitionDurationFromElement(fixtureEl.querySelector('div'))).toEqual(300)
})
it('should return 0 if the element is undefined or null', () => {
expect(Util.getTransitionDurationFromElement(null)).toEqual(0)
expect(Util.getTransitionDurationFromElement(undefined)).toEqual(0)
})
it('should return 0 if the element do not possess transition', () => {
fixtureEl.innerHTML = '<div></div>'
expect(Util.getTransitionDurationFromElement(fixtureEl.querySelector('div'))).toEqual(0)
})
})
describe('triggerTransitionEnd', () => {
it('should trigger transitionend event', done => {
fixtureEl.innerHTML = '<div style="transition: all 300ms ease-out;"></div>'
const el = fixtureEl.querySelector('div')
el.addEventListener('transitionend', () => {
expect().nothing()
done()
})
Util.triggerTransitionEnd(el)
})
})
describe('isElement', () => {
it('should detect if the parameter is an element or not', () => {
fixtureEl.innerHTML = '<div></div>'
const el = document.querySelector('div')
expect(Util.isElement(el)).toEqual(el.nodeType)
expect(Util.isElement({})).toEqual(undefined)
})
it('should detect jQuery element', () => {
fixtureEl.innerHTML = '<div></div>'
const el = document.querySelector('div')
const fakejQuery = {
0: el
}
expect(Util.isElement(fakejQuery)).toEqual(el.nodeType)
})
})
describe('emulateTransitionEnd', () => {
it('should emulate transition end', () => {
fixtureEl.innerHTML = '<div></div>'
const el = document.querySelector('div')
const spy = spyOn(window, 'setTimeout')
Util.emulateTransitionEnd(el, 10)
expect(spy).toHaveBeenCalled()
})
it('should not emulate transition end if already triggered', done => {
fixtureEl.innerHTML = '<div></div>'
const el = fixtureEl.querySelector('div')
const spy = spyOn(el, 'removeEventListener')
Util.emulateTransitionEnd(el, 10)
Util.triggerTransitionEnd(el)
setTimeout(() => {
expect(spy).toHaveBeenCalled()
done()
}, 20)
})
})
describe('typeCheckConfig', () => {
it('should check type of the config object', () => {
const namePlugin = 'collapse'
const defaultType = {
toggle: 'boolean',
parent: '(string|element)'
}
const config = {
toggle: true,
parent: 777
}
expect(() => {
Util.typeCheckConfig(namePlugin, config, defaultType)
}).toThrow(new Error('COLLAPSE: Option "parent" provided type "number" but expected type "(string|element)".'))
})
})
describe('makeArray', () => {
it('should convert node list to array', () => {
const nodeList = document.querySelectorAll('div')
expect(Array.isArray(nodeList)).toEqual(false)
expect(Array.isArray(Util.makeArray(nodeList))).toEqual(true)
})
it('should return an empty array if the nodeList is undefined', () => {
expect(Util.makeArray(null)).toEqual([])
expect(Util.makeArray(undefined)).toEqual([])
})
})
describe('isVisible', () => {
it('should return false if the element is not defined', () => {
expect(Util.isVisible(null)).toEqual(false)
expect(Util.isVisible(undefined)).toEqual(false)
})
it('should return false if the element provided is not a dom element', () => {
expect(Util.isVisible({})).toEqual(false)
})
it('should return false if the element is not visible with display none', () => {
fixtureEl.innerHTML = '<div style="display: none;"></div>'
const div = fixtureEl.querySelector('div')
expect(Util.isVisible(div)).toEqual(false)
})
it('should return false if the element is not visible with visibility hidden', () => {
fixtureEl.innerHTML = '<div style="visibility: hidden;"></div>'
const div = fixtureEl.querySelector('div')
expect(Util.isVisible(div)).toEqual(false)
})
it('should return false if the parent element is not visible', () => {
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fixtureEl.innerHTML = [
'<div style="display: none;">',
' <div class="content"></div>',
'</div>'
].join('')
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const div = fixtureEl.querySelector('.content')
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expect(Util.isVisible(div)).toEqual(false)
})
it('should return true if the element is visible', () => {
fixtureEl.innerHTML = [
'<div>',
' <div id="element"></div>',
'</div>'
].join('')
const div = fixtureEl.querySelector('#element')
expect(Util.isVisible(div)).toEqual(true)
})
})
describe('findShadowRoot', () => {
it('should return null if shadow dom is not available', () => {
// Only for newer browsers
if (!document.documentElement.attachShadow) {
expect().nothing()
return
}
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
spyOn(document.documentElement, 'attachShadow').and.returnValue(null)
expect(Util.findShadowRoot(div)).toEqual(null)
})
it('should return null when we do not find a shadow root', () => {
// Only for newer browsers
if (!document.documentElement.attachShadow) {
expect().nothing()
return
}
spyOn(document, 'getRootNode').and.returnValue(undefined)
expect(Util.findShadowRoot(document)).toEqual(null)
})
it('should return the shadow root when found', () => {
// Only for newer browsers
if (!document.documentElement.attachShadow) {
expect().nothing()
return
}
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
const shadowRoot = div.attachShadow({
mode: 'open'
})
expect(Util.findShadowRoot(shadowRoot)).toEqual(shadowRoot)
shadowRoot.innerHTML = '<button>Shadow Button</button>'
expect(Util.findShadowRoot(shadowRoot.firstChild)).toEqual(shadowRoot)
})
})
describe('noop', () => {
it('should return a function', () => {
expect(typeof Util.noop()).toEqual('function')
})
})
describe('reflow', () => {
it('should return element offset height to force the reflow', () => {
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
expect(Util.reflow(div)).toEqual(0)
})
})
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describe('getjQuery', () => {
const fakejQuery = { trigger() {} }
beforeEach(() => {
Object.defineProperty(window, 'jQuery', {
value: fakejQuery,
writable: true
})
})
afterEach(() => {
window.jQuery = undefined
})
it('should return jQuery object when present', () => {
expect(Util.getjQuery()).toEqual(fakejQuery)
})
it('should not return jQuery object when present if data-no-jquery', () => {
document.body.setAttribute('data-no-jquery', '')
expect(window.jQuery).toEqual(fakejQuery)
expect(Util.getjQuery()).toEqual(null)
document.body.removeAttribute('data-no-jquery')
})
it('should not return jQuery if not present', () => {
window.jQuery = undefined
expect(Util.getjQuery()).toEqual(null)
})
})
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})