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Bootstrap/js/tests/unit/button.spec.js

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import Button from '../../src/button'
import EventHandler from '../../src/dom/event-handler'
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/** Test helpers */
import {
getFixture,
clearFixture,
createEvent,
jQueryMock
} from '../helpers/fixture'
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describe('Button', () => {
let fixtureEl
beforeAll(() => {
fixtureEl = getFixture()
})
afterEach(() => {
clearFixture()
})
describe('VERSION', () => {
it('should return plugin version', () => {
expect(Button.VERSION).toEqual(jasmine.any(String))
})
})
describe('data-api', () => {
it('should toggle active class on click', () => {
fixtureEl.innerHTML = [
'<button class="btn" data-toggle="button">btn</button>',
'<button class="btn testParent" data-toggle="button"><div class="test"></div></button>'
].join('')
const btn = fixtureEl.querySelector('.btn')
const divTest = fixtureEl.querySelector('.test')
const btnTestParent = fixtureEl.querySelector('.testParent')
expect(btn.classList.contains('active')).toEqual(false)
btn.click()
expect(btn.classList.contains('active')).toEqual(true)
btn.click()
expect(btn.classList.contains('active')).toEqual(false)
divTest.click()
expect(btnTestParent.classList.contains('active')).toEqual(true)
})
it('should trigger input change event when toggled button has input field', done => {
fixtureEl.innerHTML = [
'<div class="btn-group" data-toggle="buttons">',
' <label class="btn btn-primary">',
' <input type="radio" id="radio" autocomplete="off"> Radio',
' </label>',
'</div>'
].join('')
const input = fixtureEl.querySelector('input')
const label = fixtureEl.querySelector('label')
input.addEventListener('change', () => {
expect().nothing()
done()
})
label.click()
})
it('should not trigger input change event when input already checked and button is active', () => {
fixtureEl.innerHTML = [
'<button type="button" class="btn btn-primary active" data-toggle="buttons">',
' <input type="radio" id="radio" autocomplete="off" checked> Radio',
'</button>'
].join('')
const button = fixtureEl.querySelector('button')
spyOn(EventHandler, 'trigger')
button.click()
expect(EventHandler.trigger).not.toHaveBeenCalled()
})
it('should remove active when an other radio button is clicked', () => {
fixtureEl.innerHTML = [
'<div class="btn-group btn-group-toggle" data-toggle="buttons">',
' <label class="btn btn-secondary active">',
' <input type="radio" name="options" id="option1" autocomplete="off" checked> Active',
' </label>',
' <label class="btn btn-secondary">',
' <input type="radio" name="options" id="option2" autocomplete="off"> Radio',
' </label>',
' <label class="btn btn-secondary">',
' <input type="radio" name="options" id="option3" autocomplete="off"> Radio',
' </label>',
'</div>'
].join('')
const option1 = fixtureEl.querySelector('#option1')
const option2 = fixtureEl.querySelector('#option2')
expect(option1.checked).toEqual(true)
expect(option1.parentElement.classList.contains('active')).toEqual(true)
const clickEvent = createEvent('click')
option2.dispatchEvent(clickEvent)
expect(option1.checked).toEqual(false)
expect(option1.parentElement.classList.contains('active')).toEqual(false)
expect(option2.checked).toEqual(true)
expect(option2.parentElement.classList.contains('active')).toEqual(true)
})
it('should do nothing if the child is not an input', () => {
fixtureEl.innerHTML = [
'<div class="btn-group btn-group-toggle" data-toggle="buttons">',
' <label class="btn btn-secondary active">',
' <span id="option1">el 1</span>',
' </label>',
' <label class="btn btn-secondary">',
' <span id="option2">el 2</span>',
' </label>',
' <label class="btn btn-secondary">',
' <span>el 3</span>',
' </label>',
'</div>'
].join('')
const option2 = fixtureEl.querySelector('#option2')
const clickEvent = createEvent('click')
option2.dispatchEvent(clickEvent)
expect().nothing()
})
it('should add focus class on focus event', () => {
fixtureEl.innerHTML = '<button class="btn" data-toggle="button"><input type="text" /></button>'
const btn = fixtureEl.querySelector('.btn')
const input = fixtureEl.querySelector('input')
const focusEvent = createEvent('focus')
input.dispatchEvent(focusEvent)
expect(btn.classList.contains('focus')).toEqual(true)
})
it('should not add focus class', () => {
fixtureEl.innerHTML = '<button data-toggle="button"><input type="text" /></button>'
const btn = fixtureEl.querySelector('button')
const input = fixtureEl.querySelector('input')
const focusEvent = createEvent('focus')
input.dispatchEvent(focusEvent)
expect(btn.classList.contains('focus')).toEqual(false)
})
it('should remove focus class on blur event', () => {
fixtureEl.innerHTML = '<button class="btn focus" data-toggle="button"><input type="text" /></button>'
const btn = fixtureEl.querySelector('.btn')
const input = fixtureEl.querySelector('input')
const focusEvent = createEvent('blur')
input.dispatchEvent(focusEvent)
expect(btn.classList.contains('focus')).toEqual(false)
})
it('should not remove focus class on blur event', () => {
fixtureEl.innerHTML = '<button class="focus" data-toggle="button"><input type="text" /></button>'
const btn = fixtureEl.querySelector('button')
const input = fixtureEl.querySelector('input')
const focusEvent = createEvent('blur')
input.dispatchEvent(focusEvent)
expect(btn.classList.contains('focus')).toEqual(true)
})
})
describe('toggle', () => {
it('should toggle aria-pressed', () => {
fixtureEl.innerHTML = '<button class="btn" data-toggle="button" aria-pressed="false"></button>'
const btnEl = fixtureEl.querySelector('.btn')
const button = new Button(btnEl)
expect(btnEl.getAttribute('aria-pressed')).toEqual('false')
expect(btnEl.classList.contains('active')).toEqual(false)
button.toggle()
expect(btnEl.getAttribute('aria-pressed')).toEqual('true')
expect(btnEl.classList.contains('active')).toEqual(true)
})
it('should handle disabled attribute on non-button elements', () => {
fixtureEl.innerHTML = [
'<div class="btn-group disabled" data-toggle="buttons" aria-disabled="true" disabled>',
' <label class="btn btn-danger disabled" aria-disabled="true" disabled>',
' <input type="checkbox" aria-disabled="true" autocomplete="off" disabled class="disabled"/>',
' </label>',
'</div>'
].join('')
const btnGroupEl = fixtureEl.querySelector('.btn-group')
const btnDanger = fixtureEl.querySelector('.btn-danger')
const input = fixtureEl.querySelector('input')
const button = new Button(btnGroupEl)
button.toggle()
expect(btnDanger.hasAttribute('disabled')).toEqual(true)
expect(input.checked).toEqual(false)
})
})
describe('dispose', () => {
it('should dispose a button', () => {
fixtureEl.innerHTML = '<button class="btn" data-toggle="button"></button>'
const btnEl = fixtureEl.querySelector('.btn')
const button = new Button(btnEl)
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expect(Button.getInstance(btnEl)).toBeDefined()
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button.dispose()
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expect(Button.getInstance(btnEl)).toBeNull()
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})
})
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describe('jQueryInterface', () => {
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it('should handle config passed and toggle existing button', () => {
fixtureEl.innerHTML = '<button class="btn" data-toggle="button"></button>'
const btnEl = fixtureEl.querySelector('.btn')
const button = new Button(btnEl)
spyOn(button, 'toggle')
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jQueryMock.fn.button = Button.jQueryInterface
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jQueryMock.elements = [btnEl]
jQueryMock.fn.button.call(jQueryMock, 'toggle')
expect(button.toggle).toHaveBeenCalled()
})
it('should create new button instance and call toggle', () => {
fixtureEl.innerHTML = '<button class="btn" data-toggle="button"></button>'
const btnEl = fixtureEl.querySelector('.btn')
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jQueryMock.fn.button = Button.jQueryInterface
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jQueryMock.elements = [btnEl]
jQueryMock.fn.button.call(jQueryMock, 'toggle')
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expect(Button.getInstance(btnEl)).toBeDefined()
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expect(btnEl.classList.contains('active')).toEqual(true)
})
it('should just create a button instance without calling toggle', () => {
fixtureEl.innerHTML = '<button class="btn" data-toggle="button"></button>'
const btnEl = fixtureEl.querySelector('.btn')
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jQueryMock.fn.button = Button.jQueryInterface
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jQueryMock.elements = [btnEl]
jQueryMock.fn.button.call(jQueryMock)
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expect(Button.getInstance(btnEl)).toBeDefined()
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expect(btnEl.classList.contains('active')).toEqual(false)
})
})
})