transition-mode.spec.ts — vue Source File

Source Code

import Vue from 'vue'
import { injectStyles, waitForUpdate, nextFrame } from './helpers'

describe('Transition mode', () => {
  const { duration, buffer } = injectStyles()
  const components = {
    one: { template: '<div>one</div>' },
    two: { template: '<div>two</div>' }
  }

  let el
  beforeEach(() => {
    el = document.createElement('div')
    document.body.appendChild(el)
  })

  it('dynamic components, simultaneous', done => {
    const vm = new Vue({
      template: `<div>
          <transition>
            <component :is="view" class="test">
            </component>
          </transition>
        </div>`,
      data: { view: 'one' },
      components
    }).$mount(el)
    expect(vm.$el.textContent).toBe('one')
    vm.view = 'two'
    waitForUpdate(() => {
      expect(vm.$el.innerHTML).toBe(
        '<div class="test v-leave v-leave-active">one</div>' +
          '<div class="test v-enter v-enter-active">two</div>'
      )
    })
      .thenWaitFor(nextFrame)
      .then(() => {
        expect(vm.$el.innerHTML).toBe(
          '<div class="test v-leave-active v-leave-to">one</div>' +
            '<div class="test v-enter-active v-enter-to">two</div>'
        )
      })
      .thenWaitFor(duration + buffer)
      .then(() => {
        expect(vm.$el.innerHTML).toBe('<div class="test">two</div>')
      })
      .then(done)
  })

  it('dynamic components, out-in', done => {
    let next
    const vm = new Vue({
      template: `<div>
          <transition name="test" mode="out-in" @after-leave="afterLeave">
            <component :is="view" class="test">
            </component>
          </transition>
        </div>`,
      data: { view: 'one' },
      components,
// ... (626 more lines)