Vue-Test-Utils未知自定义元素:<router-link>

Question

我正在使用Jest使用vue-test-utils库来运行我的测试.

即使我已经将VueRouter添加到localVue实例,它也说它实际上找不到路由器链接组件.如果代码看起来有点时髦,那是因为我使用TypeScript,但它应该非常接近ES6 ...主要的是@Prop()与传递道具相同:{..}

Vue组件:

<template>
  <div>
    <div class="temp">
      <div>
        <router-link :to="temp.url">{{temp.name}}</router-link>
      </div>
    </div>
  </div>
</template>

<script lang="ts">
import Vue from 'vue'
import Component from 'vue-class-component'
import { Prop } from 'vue-property-decorator'
import { Temp } from './Temp'

@Component({
  name: 'temp'
})
export default class TempComponent extends Vue {
  @Prop() private temp: Temp
}
</script>

<style lang="scss" scoped>
.temp {
  padding-top: 10px;
}
</style>

临时模型:

export class Temp {
  public static Default: Temp = new Temp(-1, '')

  public url: string

  constructor(public id: number, public name: string) {
    this.id = id
    this.name = name
    this.url = '/temp/' + id
  }
}

开玩笑测试

import { createLocalVue, shallow } from '@vue/test-utils'
import TempComponent from '@/components/Temp.vue'
import { Temp } from '@/components/Temp'
import VueRouter from 'vue-router'

const localVue = createLocalVue()
localVue.use(VueRouter)

describe('Temp.vue Component', () => {
  test('renders a router-link tag with to temp.url', () => {
    const temp = Temp.Default
    temp.url = 'http://some-url.com'

    const wrapper = shallow(TempComponent, {
      propsData: { temp }
    })
    const aWrapper = wrapper.find('router-link')
    expect((aWrapper.attributes() as any).to).toBe(temp.url)
  })
})

我错过了什么？测试实际通过,它只是抛出警告.实际上,这是输出:

测试输出:

$ jest --config test/unit/jest.conf.js
 PASS  ClientApp\components\__tests__\temp.spec.ts
  Temp.vue Component
    ? renders a router-link tag with to temp.url (30ms)

  console.error node_modules\vue\dist\vue.runtime.common.js:589
    [Vue warn]: Unknown custom element: <router-link> - did you register the 
component correctly? For recursive components, make sure to provide the 
"name" option.

    (found in <Root>)

Test Suites: 1 passed, 1 total
Tests:       1 passed, 1 total
Snapshots:   0 total
Time:        4.677s
Ran all test suites.
Done in 6.94s.

感谢您提供的任何帮助!

Answer 1

将router-link存根添加到shallow(或shallowMount)方法选项,如下所示:

const wrapper = shallow(TempComponent, {
     propsData: { temp },
     stubs: ['router-link']
})

或者这样:

import { RouterLinkStub } from '@vue/test-utils';

const wrapper = shallow(TempComponent, {
     propsData: { temp },
     stubs: {
         RouterLink: RouterLinkStub
     }
})

执行此操作后,错误应该消失.

Answer 2

使用 Vue 3 和 Vue Test Utils Next (v4)，您似乎只需将您的router（来自 的返回对象createRouter）作为插件添加到您的mountOptions：

import router from "@/router";

const mountOptions = {
  global: {
    plugins: [router],
  },
};

https://next.vue-test-utils.vuejs.org/api/#global

或者一个更完整的例子：

import router from "@/router";
import Button from "@/components/Button.vue";

const mountOptions = {
  global: {
    mocks: {
      $route: "home",
      $router: {
        push: jest.fn(),
      },
    },
    plugins: [router],
  },
};


it("Renders", () => {
  const wrapper = shallowMount(Button, mountOptions);
  expect(wrapper.get("nav").getComponent({ name: "router-link" })).toExist();
});

请注意，在上面的示例中，我使用的是 Vue CLI 的项目设置。