ant-design-vue/tests/setup.js

import Vue from 'vue'
// Vue.config.silent = true

/* eslint-disable global-require */
if (typeof window !== 'undefined') {
  global.window.resizeTo = (width, height) => {
    global.window.innerWidth = width || global.window.innerWidth
    global.window.innerHeight = height || global.window.innerHeight
    global.window.dispatchEvent(new Event('resize'))
  }
  global.window.scrollTo = () => {}
}

// The built-in requestAnimationFrame and cancelAnimationFrame not working with jest.runFakeTimes()
// https://github.com/facebook/jest/issues/5147
global.requestAnimationFrame = function (cb) {
  return setTimeout(cb, 0)
}

global.cancelAnimationFrame = function (cb) {
  return clearTimeout(cb, 0)
}

const mockMath = Object.create(global.Math)
mockMath.random = () => 0.5
global.Math = mockMath

Vue.component('transition-group', {
  props: ['tag'],
  render (createElement) {
    return createElement(
      this.tag || 'div',
      null,
      this.$slots.default,
    )
  },
})

Vue.prototype.$emit = function () {
  const vm = this
  const args = [].slice.call(arguments, 0)
  const filterEvent = []
  const eventName = args[0]
  if (args.length && vm.$listeners[eventName]) {
    if (filterEvent.includes(eventName)) {
      vm.$emit(eventName, ...args.slice(1))
    } else {
      vm.$listeners[eventName](...args.slice(1))
    }
  }
}