dom.spec.js
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import { mount } from '@vue/test-utils'
import {
closest,
contains,
getAttr,
getStyle,
hasAttr,
hasClass,
isDisabled,
isElement,
matches,
select,
selectAll
} from './dom'
const template = `
<div id="a" class="foo">
<div class="bar">
<span class="barspan foobar" style="color: red;"></span>
</div>
<div class="baz">
<button id="button1" aria-label="label">btn 1</button>
<button id="button2">btn 1</button>
<button id="button3" disabled>btn 1</button>
</div>
</div>
`
const App = { template }
describe('utils/dom', () => {
it('isElement() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
expect(wrapper.find('div.foo').exists()).toBe(true)
expect(isElement(wrapper.element)).toBe(true)
expect(isElement(null)).toBe(false)
expect(isElement(App)).toBe(false)
wrapper.destroy()
})
it('isDisabled() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $btns = wrapper.findAll('div.baz > button')
expect($btns).toBeDefined()
expect($btns.length).toBe(3)
expect(isDisabled($btns.at(0).element)).toBe(false)
expect(isDisabled($btns.at(1).element)).toBe(false)
expect(isDisabled($btns.at(2).element)).toBe(true)
wrapper.destroy()
})
it('hasClass() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $span = wrapper.find('span.barspan')
expect($span).toBeDefined()
expect($span.exists()).toBe(true)
expect(hasClass($span.element, 'barspan')).toBe(true)
expect(hasClass($span.element, 'foobar')).toBe(true)
expect(hasClass($span.element, 'fizzle-rocks')).toBe(false)
expect(hasClass(null, 'foobar')).toBe(false)
wrapper.destroy()
})
it('contains() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $span = wrapper.find('span.barspan')
expect($span).toBeDefined()
expect($span.exists()).toBe(true)
const $btn1 = wrapper.find('button#button1')
expect($btn1).toBeDefined()
expect($btn1.exists()).toBe(true)
expect(contains(wrapper.element, $span.element)).toBe(true)
expect(contains(wrapper.element, $btn1.element)).toBe(true)
expect(contains($span.element, $btn1.element)).toBe(false)
expect(contains(null, $btn1.element)).toBe(false)
wrapper.destroy()
})
it('closest() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $btns = wrapper.findAll('div.baz > button')
expect($btns).toBeDefined()
expect($btns.length).toBe(3)
expect(closest('div.foo', $btns.at(0).element)).toBeDefined()
expect(closest('div.foo', $btns.at(0).element)).toBe(wrapper.element)
expect(closest('div.foo', null)).toBe(null)
const $baz = wrapper.find('div.baz')
expect($baz).toBeDefined()
expect($baz.exists()).toBe(true)
expect(closest('div.baz', $btns.at(0).element)).toBeDefined()
expect(closest('div.baz', $btns.at(0).element)).toBe($baz.element)
expect(closest('div.not-here', $btns.at(0).element)).toBe(null)
expect(closest('div.baz', $baz.element)).toBe(null)
expect(closest('div.baz', $baz.element, true)).toBe($baz.element)
wrapper.destroy()
})
it('matches() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $btns = wrapper.findAll('div.baz > button')
expect($btns).toBeDefined()
expect($btns.length).toBe(3)
expect(matches($btns.at(0).element, 'button[disabled]')).toBe(false)
expect(matches($btns.at(1).element, 'button[disabled]')).toBe(false)
expect(matches($btns.at(2).element, 'button[disabled]')).toBe(true)
expect(matches($btns.at(0).element, 'div.baz button')).toBe(true)
expect(matches($btns.at(0).element, 'div.baz > button')).toBe(true)
expect(matches($btns.at(0).element, '.foo > div.baz > button')).toBe(true)
expect(matches($btns.at(0).element, 'div.foo button')).toBe(true)
expect(matches($btns.at(0).element, 'div.foo > button')).toBe(false)
expect(matches($btns.at(0).element, 'div.bar > button')).toBe(false)
expect(matches($btns.at(0).element, 'button#button1')).toBe(true)
expect(matches(null, 'div.foo')).toBe(false)
wrapper.destroy()
})
it('hasAttr() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $btns = wrapper.findAll('div.baz > button')
expect($btns).toBeDefined()
expect($btns.length).toBe(3)
expect(hasAttr($btns.at(0).element, 'disabled')).toBe(false)
expect(hasAttr($btns.at(0).element, 'aria-label')).toBe(true)
expect(hasAttr($btns.at(1).element, 'disabled')).toBe(false)
expect(hasAttr($btns.at(2).element, 'disabled')).toBe(true)
expect(hasAttr($btns.at(2).element, 'role')).toBe(false)
expect(hasAttr(null, 'role')).toBe(null)
wrapper.destroy()
})
it('getAttr() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $btns = wrapper.findAll('div.baz > button')
expect($btns).toBeDefined()
expect($btns.length).toBe(3)
expect(getAttr($btns.at(0).element, 'aria-label')).toBe('label')
expect(getAttr($btns.at(0).element, 'id')).toBe('button1')
expect(getAttr($btns.at(1).element, 'aria-label')).toBe(null)
expect(getAttr($btns.at(1).element, 'id')).toBe('button2')
expect(getAttr($btns.at(2).element, 'aria-label')).toBe(null)
expect(getAttr($btns.at(2).element, 'id')).toBe('button3')
expect(getAttr(null, 'role')).toBe(null)
expect(getAttr($btns.at(0).element, '')).toBe(null)
expect(getAttr($btns.at(0).element, undefined)).toBe(null)
wrapper.destroy()
})
it('getStyle() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $span = wrapper.find('span.barspan')
expect($span).toBeDefined()
expect($span.exists()).toBe(true)
expect(getStyle($span.element, 'color')).toBe('red')
expect(getStyle($span.element, 'width')).toBe(null)
expect(getStyle(null, 'color')).toBe(null)
wrapper.destroy()
})
it('select() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $btns = wrapper.findAll('div.baz > button')
expect($btns).toBeDefined()
expect($btns.length).toBe(3)
// With root element specified
expect(select('button', wrapper.element)).toBe($btns.at(0).element)
expect(select('button#button3', wrapper.element)).toBe($btns.at(2).element)
expect(select('span.not-here', wrapper.element)).toBe(null)
// Note: It appears that `vue-test-utils` is not detaching previous
// app instances and elements once the test is complete!
expect(select('button')).not.toBe(null)
expect(select('button')).toBe($btns.at(0).element)
expect(select('button#button3')).not.toBe(null)
expect(select('button#button3')).toBe($btns.at(2).element)
expect(select('span.not-here')).toBe(null)
wrapper.destroy()
})
it('selectAll() works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
expect(wrapper).toBeDefined()
const $btns = wrapper.findAll('div.baz > button')
expect($btns).toBeDefined()
expect($btns.length).toBe(3)
// With root element specified
expect(Array.isArray(selectAll('button', wrapper.element))).toBe(true)
expect(selectAll('button', wrapper.element).length).toBe(3)
expect(selectAll('button', wrapper.element)[0]).toBe($btns.at(0).element)
expect(selectAll('button', wrapper.element)[1]).toBe($btns.at(1).element)
expect(selectAll('button', wrapper.element)[2]).toBe($btns.at(2).element)
expect(Array.isArray(selectAll('button.fake', wrapper.element))).toBe(true)
expect(selectAll('button.fake', wrapper.element).length).toBe(0)
expect(selectAll('div.baz button', wrapper.element).length).toBe(3)
expect(selectAll('div.baz button', wrapper.element)[0]).toBe($btns.at(0).element)
expect(selectAll('div.baz button', wrapper.element)[1]).toBe($btns.at(1).element)
expect(selectAll('div.baz button', wrapper.element)[2]).toBe($btns.at(2).element)
// Without root element specified (assumes document as root)
// Note: It appears that `vue-test-utils` is not detaching previous
// app instances and elements once the test is complete!
expect(Array.isArray(selectAll('button'))).toBe(true)
expect(selectAll('button')).not.toEqual([])
expect(selectAll('button').length).toBe(3)
expect(selectAll('button')[0]).toBe($btns.at(0).element)
expect(selectAll('button')[1]).toBe($btns.at(1).element)
expect(selectAll('button')[2]).toBe($btns.at(2).element)
expect(Array.isArray(selectAll('button.fake'))).toBe(true)
expect(selectAll('button.fake').length).toBe(0)
expect(selectAll('div.baz button')).not.toEqual([])
expect(selectAll('div.baz button').length).toBe(3)
expect(selectAll('div.baz button')[0]).toBe($btns.at(0).element)
expect(selectAll('div.baz button')[1]).toBe($btns.at(1).element)
expect(selectAll('div.baz button')[2]).toBe($btns.at(2).element)
wrapper.destroy()
})
})