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Bootstrap/js/tests/unit/dropdown.spec.js
2021-04-01 21:44:04 +03:00

1867 lines
64 KiB
JavaScript

import Dropdown from '../../src/dropdown'
import EventHandler from '../../src/dom/event-handler'
/** Test helpers */
import { getFixture, clearFixture, createEvent, jQueryMock } from '../helpers/fixture'
describe('Dropdown', () => {
let fixtureEl
beforeAll(() => {
fixtureEl = getFixture()
})
afterEach(() => {
clearFixture()
})
describe('VERSION', () => {
it('should return plugin version', () => {
expect(Dropdown.VERSION).toEqual(jasmine.any(String))
})
})
describe('Default', () => {
it('should return plugin default config', () => {
expect(Dropdown.Default).toEqual(jasmine.any(Object))
})
})
describe('DefaultType', () => {
it('should return plugin default type config', () => {
expect(Dropdown.DefaultType).toEqual(jasmine.any(Object))
})
})
describe('DATA_KEY', () => {
it('should return plugin data key', () => {
expect(Dropdown.DATA_KEY).toEqual('bs.dropdown')
})
})
describe('constructor', () => {
it('should take care of element either passed as a CSS selector or DOM element', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownBySelector = new Dropdown('[data-bs-toggle="dropdown"]')
const dropdownByElement = new Dropdown(btnDropdown)
expect(dropdownBySelector._element).toEqual(btnDropdown)
expect(dropdownByElement._element).toEqual(btnDropdown)
})
it('should add a listener on trigger which do not have data-bs-toggle="dropdown"', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('.btn')
const dropdown = new Dropdown(btnDropdown)
spyOn(dropdown, 'toggle')
btnDropdown.click()
expect(dropdown.toggle).toHaveBeenCalled()
})
it('should create offset modifier correctly when offset option is a function', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const getOffset = jasmine.createSpy('getOffset').and.returnValue([10, 20])
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown, {
offset: getOffset,
popperConfig: {
onFirstUpdate: state => {
expect(getOffset).toHaveBeenCalledWith({
popper: state.rects.popper,
reference: state.rects.reference,
placement: state.placement
}, btnDropdown)
done()
}
}
})
const offset = dropdown._getOffset()
expect(typeof offset).toEqual('function')
dropdown.show()
})
it('should create offset modifier correctly when offset option is a string into data attribute', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" data-bs-offset="10,20">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
expect(dropdown._getOffset()).toEqual([10, 20])
})
it('should allow to pass config to Popper with `popperConfig`', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown, {
popperConfig: {
placement: 'left'
}
})
const popperConfig = dropdown._getPopperConfig()
expect(popperConfig.placement).toEqual('left')
})
it('should allow to pass config to Popper with `popperConfig` as a function', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" data-bs-placement="right" >Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const getPopperConfig = jasmine.createSpy('getPopperConfig').and.returnValue({ placement: 'left' })
const dropdown = new Dropdown(btnDropdown, {
popperConfig: getPopperConfig
})
const popperConfig = dropdown._getPopperConfig()
expect(getPopperConfig).toHaveBeenCalled()
expect(popperConfig.placement).toEqual('left')
})
})
describe('toggle', () => {
it('should toggle a dropdown', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should destroy old popper references on toggle', done => {
fixtureEl.innerHTML = [
'<div class="first dropdown">',
' <button class="firstBtn btn" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>',
'<div class="second dropdown">',
' <button class="secondBtn btn" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown1 = fixtureEl.querySelector('.firstBtn')
const btnDropdown2 = fixtureEl.querySelector('.secondBtn')
const firstDropdownEl = fixtureEl.querySelector('.first')
const secondDropdownEl = fixtureEl.querySelector('.second')
const dropdown1 = new Dropdown(btnDropdown1)
const dropdown2 = new Dropdown(btnDropdown2)
firstDropdownEl.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown1.classList.contains('show')).toEqual(true)
spyOn(dropdown1._popper, 'destroy')
dropdown2.toggle()
})
secondDropdownEl.addEventListener('shown.bs.dropdown', () => {
expect(dropdown1._popper.destroy).toHaveBeenCalled()
done()
})
dropdown1.toggle()
})
it('should toggle a dropdown and add/remove event listener on mobile', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const defaultValueOnTouchStart = document.documentElement.ontouchstart
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
document.documentElement.ontouchstart = () => {}
spyOn(EventHandler, 'on')
spyOn(EventHandler, 'off')
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
expect(EventHandler.on).toHaveBeenCalled()
dropdown.toggle()
})
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(false)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('false')
expect(EventHandler.off).toHaveBeenCalled()
document.documentElement.ontouchstart = defaultValueOnTouchStart
done()
})
dropdown.toggle()
})
it('should toggle a dropdown at the right', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu dropdown-menu-end">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should toggle a dropup', done => {
fixtureEl.innerHTML = [
'<div class="dropup">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropupEl = fixtureEl.querySelector('.dropup')
const dropdown = new Dropdown(btnDropdown)
dropupEl.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should toggle a dropup at the right', done => {
fixtureEl.innerHTML = [
'<div class="dropup">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu dropdown-menu-end">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropupEl = fixtureEl.querySelector('.dropup')
const dropdown = new Dropdown(btnDropdown)
dropupEl.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should toggle a dropend', done => {
fixtureEl.innerHTML = [
'<div class="dropend">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropendEl = fixtureEl.querySelector('.dropend')
const dropdown = new Dropdown(btnDropdown)
dropendEl.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should toggle a dropstart', done => {
fixtureEl.innerHTML = [
'<div class="dropstart">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropstartEl = fixtureEl.querySelector('.dropstart')
const dropdown = new Dropdown(btnDropdown)
dropstartEl.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should toggle a dropdown with parent reference', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown, {
reference: 'parent'
})
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should toggle a dropdown with a dom node reference', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown, {
reference: fixtureEl
})
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should toggle a dropdown with a jquery object reference', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown, {
reference: { 0: fixtureEl, jquery: 'jQuery' }
})
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
})
dropdown.toggle()
})
it('should toggle a dropdown with a valid virtual element reference', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle visually-hidden" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const virtualElement = {
getBoundingClientRect() {
return {
width: 0,
height: 0,
top: 0,
right: 0,
bottom: 0,
left: 0
}
}
}
expect(() => new Dropdown(btnDropdown, {
reference: {}
})).toThrowError(TypeError, 'DROPDOWN: Option "reference" provided type "object" without a required "getBoundingClientRect" method.')
expect(() => new Dropdown(btnDropdown, {
reference: {
getBoundingClientRect: 'not-a-function'
}
})).toThrowError(TypeError, 'DROPDOWN: Option "reference" provided type "object" without a required "getBoundingClientRect" method.')
// use onFirstUpdate as Poppers internal update is executed async
const dropdown = new Dropdown(btnDropdown, {
reference: virtualElement,
popperConfig: {
onFirstUpdate() {
expect(virtualElement.getBoundingClientRect).toHaveBeenCalled()
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
}
}
})
spyOn(virtualElement, 'getBoundingClientRect').and.callThrough()
dropdown.toggle()
})
it('should not toggle a dropdown if the element is disabled', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button disabled class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
throw new Error('should not throw shown.bs.dropdown event')
})
dropdown.toggle()
setTimeout(() => {
expect().nothing()
done()
})
})
it('should not toggle a dropdown if the element contains .disabled', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle disabled" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
throw new Error('should not throw shown.bs.dropdown event')
})
dropdown.toggle()
setTimeout(() => {
expect().nothing()
done()
})
})
it('should not toggle a dropdown if the menu is shown', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu show">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
throw new Error('should not throw shown.bs.dropdown event')
})
dropdown.toggle()
setTimeout(() => {
expect().nothing()
done()
})
})
it('should not toggle a dropdown if show event is prevented', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('show.bs.dropdown', e => {
e.preventDefault()
})
btnDropdown.addEventListener('shown.bs.dropdown', () => {
throw new Error('should not throw shown.bs.dropdown event')
})
dropdown.toggle()
setTimeout(() => {
expect().nothing()
done()
})
})
})
describe('show', () => {
it('should show a dropdown', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
done()
})
dropdown.show()
})
it('should not show a dropdown if the element is disabled', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button disabled class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
throw new Error('should not throw shown.bs.dropdown event')
})
dropdown.show()
setTimeout(() => {
expect().nothing()
done()
}, 10)
})
it('should not show a dropdown if the element contains .disabled', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle disabled" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
throw new Error('should not throw shown.bs.dropdown event')
})
dropdown.show()
setTimeout(() => {
expect().nothing()
done()
}, 10)
})
it('should not show a dropdown if the menu is shown', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu show">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
throw new Error('should not throw shown.bs.dropdown event')
})
dropdown.show()
setTimeout(() => {
expect().nothing()
done()
}, 10)
})
it('should not show a dropdown if show event is prevented', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('show.bs.dropdown', e => {
e.preventDefault()
})
btnDropdown.addEventListener('shown.bs.dropdown', () => {
throw new Error('should not throw shown.bs.dropdown event')
})
dropdown.show()
setTimeout(() => {
expect().nothing()
done()
}, 10)
})
})
describe('hide', () => {
it('should hide a dropdown', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu show">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownMenu = fixtureEl.querySelector('.dropdown-menu')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
expect(dropdownMenu.classList.contains('show')).toEqual(false)
done()
})
dropdown.hide()
})
it('should hide a dropdown and destroy popper', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
spyOn(dropdown._popper, 'destroy')
dropdown.hide()
})
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
expect(dropdown._popper.destroy).toHaveBeenCalled()
done()
})
dropdown.show()
})
it('should not hide a dropdown if the element is disabled', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button disabled class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu show">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownMenu = fixtureEl.querySelector('.dropdown-menu')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
throw new Error('should not throw hidden.bs.dropdown event')
})
dropdown.hide()
setTimeout(() => {
expect(dropdownMenu.classList.contains('show')).toEqual(true)
done()
}, 10)
})
it('should not hide a dropdown if the element contains .disabled', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle disabled" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu show">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownMenu = fixtureEl.querySelector('.dropdown-menu')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
throw new Error('should not throw hidden.bs.dropdown event')
})
dropdown.hide()
setTimeout(() => {
expect(dropdownMenu.classList.contains('show')).toEqual(true)
done()
}, 10)
})
it('should not hide a dropdown if the menu is not shown', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
throw new Error('should not throw hidden.bs.dropdown event')
})
dropdown.hide()
setTimeout(() => {
expect().nothing()
done()
}, 10)
})
it('should not hide a dropdown if hide event is prevented', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu show">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownMenu = fixtureEl.querySelector('.dropdown-menu')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('hide.bs.dropdown', e => {
e.preventDefault()
})
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
throw new Error('should not throw hidden.bs.dropdown event')
})
dropdown.hide()
setTimeout(() => {
expect(dropdownMenu.classList.contains('show')).toEqual(true)
done()
})
})
})
describe('dispose', () => {
it('should dispose dropdown', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
spyOn(btnDropdown, 'addEventListener').and.callThrough()
spyOn(btnDropdown, 'removeEventListener').and.callThrough()
const dropdown = new Dropdown(btnDropdown)
expect(dropdown._popper).toBeNull()
expect(dropdown._menu).toBeDefined()
expect(dropdown._element).toBeDefined()
expect(btnDropdown.addEventListener).toHaveBeenCalledWith('click', jasmine.any(Function), jasmine.any(Boolean))
dropdown.dispose()
expect(dropdown._menu).toBeNull()
expect(dropdown._element).toBeNull()
expect(btnDropdown.removeEventListener).toHaveBeenCalledWith('click', jasmine.any(Function), jasmine.any(Boolean))
})
it('should dispose dropdown with Popper', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
dropdown.toggle()
expect(dropdown._popper).toBeDefined()
expect(dropdown._menu).toBeDefined()
expect(dropdown._element).toBeDefined()
dropdown.dispose()
expect(dropdown._popper).toBeNull()
expect(dropdown._menu).toBeNull()
expect(dropdown._element).toBeNull()
})
})
describe('update', () => {
it('should call Popper and detect navbar on update', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
dropdown.toggle()
expect(dropdown._popper).toBeDefined()
spyOn(dropdown._popper, 'update')
spyOn(dropdown, '_detectNavbar')
dropdown.update()
expect(dropdown._popper.update).toHaveBeenCalled()
expect(dropdown._detectNavbar).toHaveBeenCalled()
})
it('should just detect navbar on update', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(btnDropdown)
spyOn(dropdown, '_detectNavbar')
dropdown.update()
expect(dropdown._popper).toBeNull()
expect(dropdown._detectNavbar).toHaveBeenCalled()
})
})
describe('data-api', () => {
it('should show and hide a dropdown', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
let showEventTriggered = false
let hideEventTriggered = false
btnDropdown.addEventListener('show.bs.dropdown', () => {
showEventTriggered = true
})
btnDropdown.addEventListener('shown.bs.dropdown', e => setTimeout(() => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
expect(showEventTriggered).toEqual(true)
expect(e.relatedTarget).toEqual(btnDropdown)
document.body.click()
}))
btnDropdown.addEventListener('hide.bs.dropdown', () => {
hideEventTriggered = true
})
btnDropdown.addEventListener('hidden.bs.dropdown', e => {
expect(btnDropdown.classList.contains('show')).toEqual(false)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('false')
expect(hideEventTriggered).toEqual(true)
expect(e.relatedTarget).toEqual(btnDropdown)
done()
})
btnDropdown.click()
})
it('should not use Popper in navbar', done => {
fixtureEl.innerHTML = [
'<nav class="navbar navbar-expand-md navbar-light bg-light">',
' <div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
' </div>',
'</nav>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownMenu = fixtureEl.querySelector('.dropdown-menu')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(dropdown._popper).toBeNull()
expect(dropdownMenu.getAttribute('style')).toEqual(null, 'no inline style applied by Popper')
done()
})
dropdown.show()
})
it('should manage bs attribute `data-bs-popper`="none" when dropdown is in navbar', done => {
fixtureEl.innerHTML = [
'<nav class="navbar navbar-expand-md navbar-light bg-light">',
' <div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
' </div>',
'</nav>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownMenu = fixtureEl.querySelector('.dropdown-menu')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(dropdownMenu.getAttribute('data-bs-popper')).toEqual('none')
dropdown.hide()
})
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
expect(dropdownMenu.getAttribute('data-bs-popper')).toBeNull()
done()
})
dropdown.show()
})
it('should not use Popper if display set to static', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" data-bs-display="static">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownMenu = fixtureEl.querySelector('.dropdown-menu')
btnDropdown.addEventListener('shown.bs.dropdown', () => {
// Popper adds this attribute when we use it
expect(dropdownMenu.getAttribute('data-popper-placement')).toEqual(null)
done()
})
btnDropdown.click()
})
it('should manage bs attribute `data-bs-popper`="static" when display set to static', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown" data-bs-display="static">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownMenu = fixtureEl.querySelector('.dropdown-menu')
const dropdown = new Dropdown(btnDropdown)
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(dropdownMenu.getAttribute('data-bs-popper')).toEqual('static')
dropdown.hide()
})
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
expect(dropdownMenu.getAttribute('data-bs-popper')).toBeNull()
done()
})
dropdown.show()
})
it('should remove "show" class if tabbing outside of menu', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
btnDropdown.addEventListener('shown.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
const keyup = createEvent('keyup')
keyup.key = 'Tab'
document.dispatchEvent(keyup)
})
btnDropdown.addEventListener('hidden.bs.dropdown', () => {
expect(btnDropdown.classList.contains('show')).toEqual(false)
done()
})
btnDropdown.click()
})
it('should remove "show" class if body is clicked, with multiple dropdowns', done => {
fixtureEl.innerHTML = [
'<div class="nav">',
' <div class="dropdown" id="testmenu">',
' <a class="dropdown-toggle" data-bs-toggle="dropdown" href="#testmenu">Test menu</a>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#sub1">Submenu 1</a>',
' </div>',
' </div>',
'</div>',
'<div class="btn-group">',
' <button class="btn">Actions</button>',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown"></button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Action 1</a>',
' </div>',
'</div>'
].join('')
const triggerDropdownList = fixtureEl.querySelectorAll('[data-bs-toggle="dropdown"]')
expect(triggerDropdownList.length).toEqual(2)
const [triggerDropdownFirst, triggerDropdownLast] = triggerDropdownList
triggerDropdownFirst.addEventListener('shown.bs.dropdown', () => {
expect(triggerDropdownFirst.classList.contains('show')).toEqual(true)
expect(fixtureEl.querySelectorAll('.dropdown-menu.show').length).toEqual(1)
document.body.click()
})
triggerDropdownFirst.addEventListener('hidden.bs.dropdown', () => {
expect(fixtureEl.querySelectorAll('.dropdown-menu.show').length).toEqual(0)
triggerDropdownLast.click()
})
triggerDropdownLast.addEventListener('shown.bs.dropdown', () => {
expect(triggerDropdownLast.classList.contains('show')).toEqual(true)
expect(fixtureEl.querySelectorAll('.dropdown-menu.show').length).toEqual(1)
document.body.click()
})
triggerDropdownLast.addEventListener('hidden.bs.dropdown', () => {
expect(fixtureEl.querySelectorAll('.dropdown-menu.show').length).toEqual(0)
done()
})
triggerDropdownFirst.click()
})
it('should remove "show" class if body if tabbing outside of menu, with multiple dropdowns', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <a class="dropdown-toggle" data-bs-toggle="dropdown" href="#testmenu">Test menu</a>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#sub1">Submenu 1</a>',
' </div>',
'</div>',
'<div class="btn-group">',
' <button class="btn">Actions</button>',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown"></button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Action 1</a>',
' </div>',
'</div>'
].join('')
const triggerDropdownList = fixtureEl.querySelectorAll('[data-bs-toggle="dropdown"]')
expect(triggerDropdownList.length).toEqual(2)
const [triggerDropdownFirst, triggerDropdownLast] = triggerDropdownList
triggerDropdownFirst.addEventListener('shown.bs.dropdown', () => {
expect(triggerDropdownFirst.classList.contains('show')).toEqual(true, '"show" class added on click')
expect(fixtureEl.querySelectorAll('.dropdown-menu.show').length).toEqual(1, 'only one dropdown is shown')
const keyup = createEvent('keyup')
keyup.key = 'Tab'
document.dispatchEvent(keyup)
})
triggerDropdownFirst.addEventListener('hidden.bs.dropdown', () => {
expect(fixtureEl.querySelectorAll('.dropdown-menu.show').length).toEqual(0, '"show" class removed')
triggerDropdownLast.click()
})
triggerDropdownLast.addEventListener('shown.bs.dropdown', () => {
expect(triggerDropdownLast.classList.contains('show')).toEqual(true, '"show" class added on click')
expect(fixtureEl.querySelectorAll('.dropdown-menu.show').length).toEqual(1, 'only one dropdown is shown')
const keyup = createEvent('keyup')
keyup.key = 'Tab'
document.dispatchEvent(keyup)
})
triggerDropdownLast.addEventListener('hidden.bs.dropdown', () => {
expect(fixtureEl.querySelectorAll('.dropdown-menu.show').length).toEqual(0, '"show" class removed')
done()
})
triggerDropdownFirst.click()
})
it('should fire hide and hidden event without a clickEvent if event type is not click', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#sub1">Submenu 1</a>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
triggerDropdown.addEventListener('hide.bs.dropdown', e => {
expect(e.clickEvent).toBeUndefined()
})
triggerDropdown.addEventListener('hidden.bs.dropdown', e => {
expect(e.clickEvent).toBeUndefined()
done()
})
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
const keydown = createEvent('keydown')
keydown.key = 'Escape'
triggerDropdown.dispatchEvent(keydown)
})
triggerDropdown.click()
})
it('should bubble up the events to the parent elements', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#subMenu">Sub menu</a>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdownParent = fixtureEl.querySelector('.dropdown')
const dropdown = new Dropdown(triggerDropdown)
const showFunction = jasmine.createSpy('showFunction')
dropdownParent.addEventListener('show.bs.dropdown', showFunction)
const shownFunction = jasmine.createSpy('shownFunction')
dropdownParent.addEventListener('shown.bs.dropdown', () => {
shownFunction()
dropdown.hide()
})
const hideFunction = jasmine.createSpy('hideFunction')
dropdownParent.addEventListener('hide.bs.dropdown', hideFunction)
dropdownParent.addEventListener('hidden.bs.dropdown', () => {
expect(showFunction).toHaveBeenCalled()
expect(shownFunction).toHaveBeenCalled()
expect(hideFunction).toHaveBeenCalled()
done()
})
dropdown.show()
})
it('should ignore keyboard events within <input>s and <textarea>s', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#sub1">Submenu 1</a>',
' <input type="text">',
' <textarea></textarea>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const input = fixtureEl.querySelector('input')
const textarea = fixtureEl.querySelector('textarea')
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
input.focus()
const keydown = createEvent('keydown')
keydown.key = 'ArrowUp'
input.dispatchEvent(keydown)
expect(document.activeElement).toEqual(input, 'input still focused')
textarea.focus()
textarea.dispatchEvent(keydown)
expect(document.activeElement).toEqual(textarea, 'textarea still focused')
done()
})
triggerDropdown.click()
})
it('should skip disabled element when using keyboard navigation', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item disabled" href="#sub1">Submenu 1</a>',
' <button class="dropdown-item" type="button" disabled>Disabled button</button>',
' <a id="item1" class="dropdown-item" href="#">Another link</a>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
const keydown = createEvent('keydown')
keydown.key = 'ArrowDown'
triggerDropdown.dispatchEvent(keydown)
triggerDropdown.dispatchEvent(keydown)
expect(document.activeElement.classList.contains('disabled')).toEqual(false, '.disabled not focused')
expect(document.activeElement.hasAttribute('disabled')).toEqual(false, ':disabled not focused')
done()
})
triggerDropdown.click()
})
it('should skip hidden element when using keyboard navigation', done => {
fixtureEl.innerHTML = [
'<style>',
' .d-none {',
' display: none;',
' }',
'</style>',
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <button class="dropdown-item d-none" type="button">Hidden button by class</button>',
' <a class="dropdown-item" href="#sub1" style="display: none">Hidden link</a>',
' <a class="dropdown-item" href="#sub1" style="visibility: hidden">Hidden link</a>',
' <a id="item1" class="dropdown-item" href="#">Another link</a>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
const keydown = createEvent('keydown')
keydown.key = 'ArrowDown'
triggerDropdown.dispatchEvent(keydown)
expect(document.activeElement.classList.contains('d-none')).toEqual(false, '.d-none not focused')
expect(document.activeElement.style.display).not.toBe('none', '"display: none" not focused')
expect(document.activeElement.style.visibility).not.toBe('hidden', '"visibility: hidden" not focused')
done()
})
triggerDropdown.click()
})
it('should focus next/previous element when using keyboard navigation', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a id="item1" class="dropdown-item" href="#">A link</a>',
' <a id="item2" class="dropdown-item" href="#">Another link</a>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const item1 = fixtureEl.querySelector('#item1')
const item2 = fixtureEl.querySelector('#item2')
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
const keydownArrowDown = createEvent('keydown')
keydownArrowDown.key = 'ArrowDown'
triggerDropdown.dispatchEvent(keydownArrowDown)
expect(document.activeElement).toEqual(item1, 'item1 is focused')
document.activeElement.dispatchEvent(keydownArrowDown)
expect(document.activeElement).toEqual(item2, 'item2 is focused')
const keydownArrowUp = createEvent('keydown')
keydownArrowUp.key = 'ArrowUp'
document.activeElement.dispatchEvent(keydownArrowUp)
expect(document.activeElement).toEqual(item1, 'item1 is focused')
done()
})
triggerDropdown.click()
})
it('should focus on the first element when using ArrowUp for the first time', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a id="item1" class="dropdown-item" href="#">A link</a>',
' <a id="item2" class="dropdown-item" href="#">Another link</a>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const item1 = fixtureEl.querySelector('#item1')
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
const keydown = createEvent('keydown')
keydown.key = 'ArrowUp'
document.activeElement.dispatchEvent(keydown)
expect(document.activeElement).toEqual(item1, 'item1 is focused')
done()
})
triggerDropdown.click()
})
it('should not close the dropdown if the user clicks on a text field', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <input type="text">',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const input = fixtureEl.querySelector('input')
input.addEventListener('click', () => {
expect(triggerDropdown.classList.contains('show')).toEqual(true, 'dropdown menu is shown')
done()
})
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
expect(triggerDropdown.classList.contains('show')).toEqual(true, 'dropdown menu is shown')
input.dispatchEvent(createEvent('click'))
})
triggerDropdown.click()
})
it('should not close the dropdown if the user clicks on a textarea', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <textarea></textarea>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const textarea = fixtureEl.querySelector('textarea')
textarea.addEventListener('click', () => {
expect(triggerDropdown.classList.contains('show')).toEqual(true, 'dropdown menu is shown')
done()
})
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
expect(triggerDropdown.classList.contains('show')).toEqual(true, 'dropdown menu is shown')
textarea.dispatchEvent(createEvent('click'))
})
triggerDropdown.click()
})
it('should ignore keyboard events for <input>s and <textarea>s within dropdown-menu, except for escape key', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#sub1">Submenu 1</a>',
' <input type="text">',
' <textarea></textarea>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const input = fixtureEl.querySelector('input')
const textarea = fixtureEl.querySelector('textarea')
const keydownSpace = createEvent('keydown')
keydownSpace.key = 'Space'
const keydownArrowUp = createEvent('keydown')
keydownArrowUp.key = 'ArrowUp'
const keydownArrowDown = createEvent('keydown')
keydownArrowDown.key = 'ArrowDown'
const keydownEscape = createEvent('keydown')
keydownEscape.key = 'Escape'
triggerDropdown.addEventListener('shown.bs.dropdown', () => {
// Key Space
input.focus()
input.dispatchEvent(keydownSpace)
expect(document.activeElement).toEqual(input, 'input still focused')
textarea.focus()
textarea.dispatchEvent(keydownSpace)
expect(document.activeElement).toEqual(textarea, 'textarea still focused')
// Key ArrowUp
input.focus()
input.dispatchEvent(keydownArrowUp)
expect(document.activeElement).toEqual(input, 'input still focused')
textarea.focus()
textarea.dispatchEvent(keydownArrowUp)
expect(document.activeElement).toEqual(textarea, 'textarea still focused')
// Key ArrowDown
input.focus()
input.dispatchEvent(keydownArrowDown)
expect(document.activeElement).toEqual(input, 'input still focused')
textarea.focus()
textarea.dispatchEvent(keydownArrowDown)
expect(document.activeElement).toEqual(textarea, 'textarea still focused')
// Key Escape
input.focus()
input.dispatchEvent(keydownEscape)
expect(triggerDropdown.classList.contains('show')).toEqual(false, 'dropdown menu is not shown')
done()
})
triggerDropdown.click()
})
it('should not open dropdown if escape key was pressed on the toggle', done => {
fixtureEl.innerHTML = [
'<div class="tabs">',
' <div class="dropdown">',
' <button disabled class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' <a class="dropdown-item" href="#">Something else here</a>',
' <div class="divider"></div>',
' <a class="dropdown-item" href="#">Another link</a>',
' </div>',
' </div>',
'</div>'
]
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = new Dropdown(triggerDropdown)
const button = fixtureEl.querySelector('button[data-bs-toggle="dropdown"]')
spyOn(dropdown, 'toggle')
// Key escape
button.focus()
// Key escape
const keydownEscape = createEvent('keydown')
keydownEscape.key = 'Escape'
button.dispatchEvent(keydownEscape)
setTimeout(() => {
expect(dropdown.toggle).not.toHaveBeenCalled()
expect(triggerDropdown.classList.contains('show')).toEqual(false)
done()
}, 20)
})
it('should propagate escape key events if dropdown is closed', done => {
fixtureEl.innerHTML = [
'<div class="parent">',
' <div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Some Item</a>',
' </div>',
' </div>',
'</div>'
]
const parent = fixtureEl.querySelector('.parent')
const toggle = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const parentKeyHandler = jasmine.createSpy('parentKeyHandler')
parent.addEventListener('keydown', parentKeyHandler)
parent.addEventListener('keyup', () => {
expect(parentKeyHandler).toHaveBeenCalled()
done()
})
const keydownEscape = createEvent('keydown', { bubbles: true })
keydownEscape.key = 'Escape'
const keyupEscape = createEvent('keyup', { bubbles: true })
keyupEscape.key = 'Escape'
toggle.focus()
toggle.dispatchEvent(keydownEscape)
toggle.dispatchEvent(keyupEscape)
})
})
describe('jQueryInterface', () => {
it('should create a dropdown', () => {
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
jQueryMock.fn.dropdown = Dropdown.jQueryInterface
jQueryMock.elements = [div]
jQueryMock.fn.dropdown.call(jQueryMock)
expect(Dropdown.getInstance(div)).toBeDefined()
})
it('should not re create a dropdown', () => {
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
const dropdown = new Dropdown(div)
jQueryMock.fn.dropdown = Dropdown.jQueryInterface
jQueryMock.elements = [div]
jQueryMock.fn.dropdown.call(jQueryMock)
expect(Dropdown.getInstance(div)).toEqual(dropdown)
})
it('should throw error on undefined method', () => {
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
const action = 'undefinedMethod'
jQueryMock.fn.dropdown = Dropdown.jQueryInterface
jQueryMock.elements = [div]
expect(() => {
jQueryMock.fn.dropdown.call(jQueryMock, action)
}).toThrowError(TypeError, `No method named "${action}"`)
})
})
describe('getInstance', () => {
it('should return dropdown instance', () => {
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
const dropdown = new Dropdown(div)
expect(Dropdown.getInstance(div)).toEqual(dropdown)
expect(Dropdown.getInstance(div)).toBeInstanceOf(Dropdown)
})
it('should return null when there is no dropdown instance', () => {
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
expect(Dropdown.getInstance(div)).toEqual(null)
})
})
it('should open dropdown when pressing keydown or keyup', done => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item disabled" href="#sub1">Submenu 1</a>',
' <button class="dropdown-item" type="button" disabled>Disabled button</button>',
' <a id="item1" class="dropdown-item" href="#">Another link</a>',
' </div>',
'</div>'
].join('')
const triggerDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const dropdown = fixtureEl.querySelector('.dropdown')
const keydown = createEvent('keydown')
keydown.key = 'ArrowDown'
const keyup = createEvent('keyup')
keyup.key = 'ArrowUp'
const handleArrowDown = () => {
expect(triggerDropdown.classList.contains('show')).toEqual(true)
expect(triggerDropdown.getAttribute('aria-expanded')).toEqual('true')
setTimeout(() => {
dropdown.hide()
keydown.key = 'ArrowUp'
triggerDropdown.dispatchEvent(keyup)
}, 20)
}
const handleArrowUp = () => {
expect(triggerDropdown.classList.contains('show')).toEqual(true)
expect(triggerDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
}
dropdown.addEventListener('shown.bs.dropdown', event => {
if (event.target.key === 'ArrowDown') {
handleArrowDown()
} else {
handleArrowUp()
}
})
triggerDropdown.dispatchEvent(keydown)
})
it('should allow `data-bs-toggle="dropdown"` click events to bubble up', () => {
fixtureEl.innerHTML = [
'<div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown">Dropdown</button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#">Secondary link</a>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const clickListener = jasmine.createSpy('clickListener')
const delegatedClickListener = jasmine.createSpy('delegatedClickListener')
btnDropdown.addEventListener('click', clickListener)
document.addEventListener('click', delegatedClickListener)
btnDropdown.click()
expect(clickListener).toHaveBeenCalled()
expect(delegatedClickListener).toHaveBeenCalled()
})
it('should open the dropdown when clicking the child element inside `data-bs-toggle="dropdown"`', done => {
fixtureEl.innerHTML = [
'<div class="container">',
' <div class="dropdown">',
' <button class="btn dropdown-toggle" data-bs-toggle="dropdown"><span id="childElement">Dropdown</span></button>',
' <div class="dropdown-menu">',
' <a class="dropdown-item" href="#subMenu">Sub menu</a>',
' </div>',
' </div>',
'</div>'
].join('')
const btnDropdown = fixtureEl.querySelector('[data-bs-toggle="dropdown"]')
const childElement = fixtureEl.querySelector('#childElement')
btnDropdown.addEventListener('shown.bs.dropdown', () => setTimeout(() => {
expect(btnDropdown.classList.contains('show')).toEqual(true)
expect(btnDropdown.getAttribute('aria-expanded')).toEqual('true')
done()
}))
childElement.click()
})
})