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model.spec.js
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import Alpine from 'alpinejs'
import { wait, fireEvent } from '@testing-library/dom'
global.MutationObserver = class {
observe() {}
}
test('x-model has value binding when initialized', async () => {
document.body.innerHTML = `
<div x-data="{ foo: 'bar' }">
<input x-model="foo"></input>
</div>
`
Alpine.start()
expect(document.querySelector('input').value).toEqual('bar')
})
test('x-model updates value when updated via input event', async () => {
document.body.innerHTML = `
<div x-data="{ foo: 'bar' }">
<input x-model="foo"></input>
</div>
`
Alpine.start()
fireEvent.input(document.querySelector('input'), { target: { value: 'baz' }})
await wait(() => { expect(document.querySelector('input').value).toEqual('baz') })
})
test('x-model reflects data changed elsewhere', async () => {
document.body.innerHTML = `
<div x-data="{ foo: 'bar' }">
<input x-model="foo"></input>
<button x-on:click="foo = 'baz'"></button>
</div>
`
Alpine.start()
document.querySelector('button').click()
await wait(() => { expect(document.querySelector('input').value).toEqual('baz') })
})
test('x-model casts value to number if number modifier is present', async () => {
document.body.innerHTML = `
<div x-data="{ foo: null }">
<input type="number" x-model.number="foo"></input>
</div>
`
Alpine.start()
fireEvent.input(document.querySelector('input'), { target: { value: '123' }})
await wait(() => { expect(document.querySelector('[x-data]').__x.data.foo).toEqual(123) })
})
test('x-model trims value if trim modifier is present', async () => {
document.body.innerHTML = `
<div x-data="{ foo: '' }">
<input x-model.trim="foo"></input>
<span x-text="foo"></span>
</div>
`
Alpine.start()
fireEvent.input(document.querySelector('input'), { target: { value: 'bar ' }})
await wait(() => { expect(document.querySelector('span').innerText).toEqual('bar') })
})
test('x-model updates value when updated via changed event when lazy modifier is present', async () => {
document.body.innerHTML = `
<div x-data="{ foo: 'bar' }">
<input x-model.lazy="foo"></input>
</div>
`
Alpine.start()
fireEvent.change(document.querySelector('input'), { target: { value: 'baz' }})
await wait(() => { expect(document.querySelector('input').value).toEqual('baz') })
})
test('x-model binds checkbox value', async () => {
document.body.innerHTML = `
<div x-data="{ foo: true }">
<input type="checkbox" x-model="foo"></input>
<span x-bind:bar="foo"></span>
</div>
`
Alpine.start()
expect(document.querySelector('input').checked).toEqual(true)
expect(document.querySelector('span').getAttribute('bar')).toEqual("true")
fireEvent.change(document.querySelector('input'), { target: { checked: false }})
await wait(() => { expect(document.querySelector('span').getAttribute('bar')).toEqual("false") })
})
test('x-model binds checkbox value to array', async () => {
document.body.innerHTML = `
<div x-data="{ foo: ['bar'] }">
<input type="checkbox" x-model="foo" value="bar"></input>
<input type="checkbox" x-model="foo" value="baz"></input>
<span x-bind:bar="foo"></span>
</div>
`
Alpine.start()
expect(document.querySelectorAll('input')[0].checked).toEqual(true)
expect(document.querySelectorAll('input')[1].checked).toEqual(false)
expect(document.querySelector('span').getAttribute('bar')).toEqual("bar")
fireEvent.change(document.querySelectorAll('input')['1'], { target: { checked: true }})
await wait(() => {
expect(document.querySelectorAll('input')[0].checked).toEqual(true)
expect(document.querySelectorAll('input')[1].checked).toEqual(true)
expect(document.querySelector('span').getAttribute('bar')).toEqual("bar,baz")
})
})
test('x-model binds radio value', async () => {
document.body.innerHTML = `
<div x-data="{ foo: 'bar' }">
<input type="radio" x-model="foo" value="bar"></input>
<input type="radio" x-model="foo" value="baz"></input>
<span x-bind:bar="foo"></span>
</div>
`
Alpine.start()
expect(document.querySelectorAll('input')[0].checked).toEqual(true)
expect(document.querySelectorAll('input')[1].checked).toEqual(false)
expect(document.querySelector('span').getAttribute('bar')).toEqual('bar')
fireEvent.change(document.querySelectorAll('input')[1], { target: { checked: true }})
await wait(() => {
expect(document.querySelectorAll('input')[0].checked).toEqual(false)
expect(document.querySelectorAll('input')[1].checked).toEqual(true)
expect(document.querySelector('span').getAttribute('bar')).toEqual('baz')
})
})
test('x-model binds select dropdown', async () => {
document.body.innerHTML = `
<div x-data="{ foo: 'bar' }">
<select x-model="foo">
<option disabled value="">Please select one</option>
<option>bar</option>
<option>baz</option>
</select>
<span x-text="foo"></span>
</div>
`
Alpine.start()
expect(document.querySelectorAll('option')[0].selected).toEqual(false)
expect(document.querySelectorAll('option')[1].selected).toEqual(true)
expect(document.querySelectorAll('option')[2].selected).toEqual(false)
expect(document.querySelector('span').innerText).toEqual('bar')
fireEvent.change(document.querySelector('select'), { target: { value: 'baz' }});
await wait(() => {
expect(document.querySelectorAll('option')[0].selected).toEqual(false)
expect(document.querySelectorAll('option')[1].selected).toEqual(false)
expect(document.querySelectorAll('option')[2].selected).toEqual(true)
expect(document.querySelector('span').innerText).toEqual('baz')
})
})
test('x-model binds multiple select dropdown', async () => {
document.body.innerHTML = `
<div x-data="{ foo: ['bar'] }">
<select x-model="foo" multiple>
<option disabled value="">Please select one</option>
<option>bar</option>
<option>baz</option>
</select>
<span x-text="foo"></span>
</div>
`
Alpine.start()
expect(document.querySelectorAll('option')[0].selected).toEqual(false)
expect(document.querySelectorAll('option')[1].selected).toEqual(true)
expect(document.querySelectorAll('option')[2].selected).toEqual(false)
expect(document.querySelector('span').innerText).toEqual(['bar'])
document.querySelectorAll('option')[2].selected = true
fireEvent.change(document.querySelector('select'));
await wait(() => {
expect(document.querySelectorAll('option')[0].selected).toEqual(false)
expect(document.querySelectorAll('option')[1].selected).toEqual(true)
expect(document.querySelectorAll('option')[2].selected).toEqual(true)
expect(document.querySelector('span').innerText).toEqual(['bar', 'baz'])
})
})
test('x-model binds nested keys', async () => {
document.body.innerHTML = `
<div x-data="{ some: { nested: { key: 'foo' } } }">
<input type="text" x-model="some.nested.key">
<span x-text="some.nested.key"></span>
</div>
`
Alpine.start()
expect(document.querySelector('input').value).toEqual('foo')
expect(document.querySelector('span').innerText).toEqual('foo')
fireEvent.input(document.querySelector('input'), { target: { value: 'bar' }})
await wait(() => {
expect(document.querySelector('input').value).toEqual('bar')
expect(document.querySelector('span').innerText).toEqual('bar')
})
})