笑话：如何模拟vuex中使用的vue路由器

Question

我尝试在vuex的操作中使用vue路由器，这在本地主机上运行良好。

然而，当我试图通过从存储文件导入操作来准备存储（模拟）时，我得到了错误。

你能帮我解决这个问题吗？

版本

vue-test-utils: 1.0.0-beta.16
yarn: 1.5.1
vuejs: 2.5.13
vue-jest: 1.4.0

错误msg

 FAIL  test/components/main.test.js
  ● Test suite failed to run

    /Users/gulliver/Desktop/test/vue-test-utils-jest-example/node_modules/vue/dist/vue.esm.js:10809
    export default Vue$3;
    ^^^^^^

    SyntaxError: Unexpected token export

      at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/script_transformer.js:305:17)
      at Object.<anonymous> (src/router/main.js:1:203)
      at Object.<anonymous> (src/store/main.js:3:13)

Test Suites: 1 failed, 1 total
Tests:       0 total
Snapshots:   0 total
Time:        2.354s
Ran all test suites matching /test\/components\/main.test.js/i.
error An unexpected error occurred: "Command failed.
Exit code: 1

app/src/main。js

import Vue from "vue/dist/vue.esm";
import App from './App.vue'
import store from './store/main.js';
import router from './router/main.js';

new Vue({
  el: '#app',
  render: h => h(App),
  store,
  router,
})

app/src/store/main。js

import Vue from "vue";
import Vuex from 'vuex';
import router from '../router/main.js'

Vue.use(Vuex)

export const actions = {
  locationTo(context, url){
    router.push(url)  
  }
}
export default new Vuex.Store({
  actions,
})

应用程序/src/路由器/main.js

import Vue from "vue/dist/vue.esm";
import VueRouter from 'vue-router';
import root from '../components/root.vue';
import hoge from '../components/hoge.vue';

Vue.use(VueRouter)

export const routes = [
  { path: '/', component: root},
  { path: '/hoge', component: hoge},
];

export default new VueRouter({
  mode: 'history',
  routes
})

应用程序/测试/组件/主。测验js

import Vue from "vue";
import Vuex from "vuex";
import { shallowMount, createLocalVue } from "@vue/test-utils";

import { actions } from "@/store/main"; //NOTE: this causes error

import _ from "lodash";
const localVue = createLocalVue();

import root from '@/components/root.vue'
import hoge from '@/components/hoge.vue'

describe('increment.vue', () => {
  let propsData;
  let store;
  let wrapper;

  beforeEach(() => {
    propsData = _.cloneDeep(personObject)

    store = new Vuex.Store(_.cloneDeep({
      actions,
    }))

    const $route = {
      path: '/hoge', components: hoge
    }

    wrapper = shallowMount(root, {
      localVue,
      propsData,
      store,
      use: ['Vuex'],
      stubs: ['router-view'],
      mocks: {
        $route
      }
    })

  });

  it('test:router in store', () => {
    // check if URL changed after action executed
  });

})

组件

// App.vue
<template>
  <div id="app">
    <router-view></router-view>
  </div>
</template>

// root.vue
<template>
  <div>
    <p>root component</p>
  </div>
</template>

<script>
export default {
  mounted () {
    this.$store.dispatch('locationTo', '/hoge')
  },
}
</script>

// hoge.vue
<template>
  <div>
    <p>hoge template</p>
  </div>
</template>

Answer 1

此错误与Jest在Node.js环境中运行的事实有关，并且您正在使用导出默认值，这在Node.js中默认不起作用（Node使用module.exports）。我猜您是在使用webpack进行开发/生产构建，而不是测试环境。

你在开玩笑吗？如果是这样，您需要设置babeljest，以便jest知道如何读取ES模块语法（import/export）。

请在此处阅读更多信息：https://vue-test-utils.vuejs.org/guides/#testing-带有jest的单文件组件

这可能是烦人的设置，让我知道，如果你需要更多的帮助，让它工作。