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button-toolbar.spec.js
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button-toolbar.spec.js
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import { mount } from '@vue/test-utils'
import { waitNT } from '../../../tests/utils'
import { BButton } from '../button/button'
import { BButtonGroup } from '../button-group/button-group'
import { BButtonToolbar } from './button-toolbar'
describe('button-toolbar', () => {
it('toolbar root should be "div"', async () => {
const wrapper = mount(BButtonToolbar)
expect(wrapper.element.tagName).toBe('DIV')
wrapper.destroy()
})
it('toolbar should contain base class', async () => {
const wrapper = mount(BButtonToolbar)
expect(wrapper.classes()).toContain('btn-toolbar')
wrapper.destroy()
})
it('toolbar should not have class "justify-content-between"', async () => {
const wrapper = mount(BButtonToolbar)
expect(wrapper.classes()).not.toContain('justify-content-between')
wrapper.destroy()
})
it('toolbar should have role', async () => {
const wrapper = mount(BButtonToolbar)
expect(wrapper.attributes('role')).toBe('toolbar')
wrapper.destroy()
})
it('toolbar should not have tabindex by default', async () => {
const wrapper = mount(BButtonToolbar)
expect(wrapper.attributes('tabindex')).toBeUndefined()
wrapper.destroy()
})
it('toolbar should have class "justify-content-between" when justify set', async () => {
const wrapper = mount(BButtonToolbar, {
propsData: {
justify: true
}
})
expect(wrapper.classes()).toContain('justify-content-between')
expect(wrapper.classes()).toContain('btn-toolbar')
wrapper.destroy()
})
it('toolbar should have tabindex when key-nav set', async () => {
const wrapper = mount(BButtonToolbar, {
propsData: {
keyNav: true
}
})
expect(wrapper.attributes('tabindex')).toBeDefined()
expect(wrapper.attributes('tabindex')).toBe('0')
expect(wrapper.element.tabIndex).toBe(0)
wrapper.destroy()
})
// These tests are wrapped in a new describe to limit the scope of the getBCR Mock
describe('keyboard navigation', () => {
const origGetBCR = Element.prototype.getBoundingClientRect
beforeEach(() => {
// Mock `getBoundingClientRect()` so that the `isVisible(el)` test returns `true`
// In our test below, all pagination buttons would normally be visible
Element.prototype.getBoundingClientRect = jest.fn(() => ({
width: 24,
height: 24,
top: 0,
left: 0,
bottom: 0,
right: 0
}))
})
afterEach(() => {
// Restore prototype
Element.prototype.getBoundingClientRect = origGetBCR
})
// Test App for keynav
const App = {
render(h) {
return h(BButtonToolbar, { props: { keyNav: true } }, [
h(BButtonGroup, [h(BButton, 'a'), h(BButton, 'b')]),
h(BButtonGroup, [h(BButton, { props: { disabled: true } }, 'c'), h(BButton, 'd')]),
h(BButtonGroup, [h(BButton, 'e'), h(BButton, 'f')])
])
}
}
it('has correct structure', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
await waitNT(wrapper.vm)
expect(wrapper.find('div.btn-toolbar').exists()).toBe(true)
expect(wrapper.attributes('tabindex')).toBe('0')
const $groups = wrapper.findAllComponents(BButtonGroup)
expect($groups).toBeDefined()
expect($groups.length).toBe(3)
const $btns = wrapper.findAll('button')
expect($btns).toBeDefined()
expect($btns.length).toBe(6)
expect($btns.at(0).element.matches('button[tabindex="-1"')).toBe(true)
expect($btns.at(1).element.matches('button[tabindex="-1"')).toBe(true)
expect($btns.at(2).element.matches('button[tabindex="-1"')).toBe(false) // Disabled button
expect($btns.at(3).element.matches('button[tabindex="-1"')).toBe(true)
expect($btns.at(4).element.matches('button[tabindex="-1"')).toBe(true)
expect($btns.at(5).element.matches('button[tabindex="-1"')).toBe(true)
wrapper.destroy()
})
it('focuses first button when tabbed into', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
await waitNT(wrapper.vm)
expect(wrapper.find('div.btn-toolbar').exists()).toBe(true)
expect(wrapper.attributes('tabindex')).toBe('0')
const $btns = wrapper.findAll('button')
expect($btns).toBeDefined()
expect($btns.length).toBe(6)
expect(document.activeElement).not.toBe(wrapper.element)
expect(document.activeElement).not.toBe($btns.at(0).element)
await wrapper.trigger('focusin')
expect(document.activeElement).toBe($btns.at(0).element)
wrapper.destroy()
})
it('keyboard navigation works', async () => {
const wrapper = mount(App, {
attachTo: document.body
})
await waitNT(wrapper.vm)
expect(wrapper.find('div.btn-toolbar').exists()).toBe(true)
expect(wrapper.attributes('tabindex')).toBe('0')
const $btns = wrapper.findAll('button')
expect($btns).toBeDefined()
expect($btns.length).toBe(6)
// Focus first button
$btns.at(0).element.focus()
expect(document.activeElement).toBe($btns.at(0).element)
// Cursor right
await $btns.at(0).trigger('keydown.right')
expect(document.activeElement).toBe($btns.at(1).element)
// Cursor right (skips disabled button)
await $btns.at(1).trigger('keydown.right')
expect(document.activeElement).toBe($btns.at(3).element)
// Cursor shift-right (focuses last button)
await $btns.at(1).trigger('keydown.right', { shiftKey: true })
expect(document.activeElement).toBe($btns.at(5).element)
// Cursor left
await $btns.at(5).trigger('keydown.left')
expect(document.activeElement).toBe($btns.at(4).element)
// Cursor shift left (focuses first button)
await $btns.at(5).trigger('keydown.left', { shiftKey: true })
expect(document.activeElement).toBe($btns.at(0).element)
wrapper.destroy()
})
})
})