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import Alpine from 'alpinejs'
import { wait } from '@testing-library/dom'
global.MutationObserver = class {
observe() {}
}
test('$nextTick', async () => {
document.body.innerHTML = `
<div x-data="{foo: 'bar'}">
<span x-text="foo" x-ref="span"></span>
<button x-on:click="foo = 'baz'; $nextTick(() => {$refs.span.textContent = 'bob'})"></button>
</div>
`
Alpine.start()
expect(document.querySelector('span').textContent).toEqual('bar')
document.querySelector('button').click()
await wait(() => expect(document.querySelector('span').textContent).toEqual('bob'))
})
test('$nextTick waits for x-for to finish rendering', async () => {
document.body.innerHTML = `
<div x-data="{list: ['one', 'two'], check: 2}">
<template x-for="item in list">
<span x-text="item"></span>
</template>
<p x-text="check"></p>
<button x-on:click="list = ['one', 'two', 'three']; $nextTick(() => {check = document.querySelectorAll('span').length})"></button>
</div>
`
Alpine.start()
expect(document.querySelector('p').textContent).toEqual('2')
document.querySelector('button').click()
await wait(() => { expect(document.querySelector('p').textContent).toEqual('3') })
})
test('$nextTick works with transition', async () => {
jest.spyOn(window, 'requestAnimationFrame').mockImplementation((callback) => {
setTimeout(callback, 10)
})
document.body.innerHTML = `
<div x-data="{ show: false, loggedDisplayStyle: null }" x-init="$nextTick(() => { loggedDisplayStyle = document.querySelector('h1').style.display })">
<h1 x-show="show" x-transition:enter="animation-enter"></h1>
<h2 x-text="loggedDisplayStyle"></h2>
<button @click="show = true; $nextTick(() => { loggedDisplayStyle = document.querySelector('h1').style.display })"
</div>
`
Alpine.start()
await wait(() => {
expect(document.querySelector('h2').textContent).toEqual('none')
})
document.querySelector('button').click()
await wait(() => {
expect(document.querySelector('h2').textContent).toEqual('')
})
})