根据标题，这有可能吗？

我正在尝试测试Vue应用程序的一个简单组件，其中包含一个标题和一个按钮，该按钮将用户重定向到下一个页面。我想测试一下，当按钮被点击时，是否会向路由器发送一个事件/消息，并检查目标路由是否正确。

应用程序的结构如下：

App.Vue - 入口组件

<script setup lang="ts">
import { RouterView } from "vue-router";
import Wrapper from "@/components/Wrapper.vue";
import Container from "@/components/Container.vue";
import HomeView from "@/views/HomeView.vue";
</script>

<template>
  <Wrapper>
    <Container>
      <RouterView/>
    </Container>
  </Wrapper>
</template>

<style>

  body{
    @apply bg-slate-50 text-slate-800 dark:bg-slate-800 dark:text-slate-50;
  }

</style>

router/index.ts - Vue Router配置文件

import {createRouter, createWebHistory} from "vue-router";
import HomeView from "@/views/HomeView.vue";

export enum RouteNames {
    HOME = "home",
    GAME = "game",
}

const routes = [
    {
      path: "/",
      name: RouteNames.HOME,
      component: HomeView,
      alias: "/home"
    },
    {
      path: "/game",
      name: RouteNames.GAME,
      component: () => import("@/views/GameView.vue"),
    },
];

const router = createRouter({
  history: createWebHistory(import.meta.env.BASE_URL),
  routes
});

export default router;

HomeView.Vue - App组件中RouterView的入口视图

<template>
  <Header title="My App"/>
  <ButtonRouterLink :to="RouteNames.GAME" text="Start" class="btn-game"/>
</template>

<script setup>
  import Header from "@/components/Header.vue";
  import ButtonRouterLink from "@/components/ButtonRouterLink.vue";
  import {RouteNames} from "@/router/";
</script>

ButtonRouterLink.vue

<template>
<RouterLink v-bind:to="{name: to}" class="btn">
  {{ text }}
</RouterLink>
</template>

<script setup>
import { RouterLink } from "vue-router";

const props = defineProps({
  to: String,
  text: String
})
</script>

考虑到它使用CompositionAPI和TypeScript，有没有办法在Vitest测试中模拟路由器？

这是一个测试文件结构的示例（HomeView.spec.ts）：

import {shallowMount} from "@vue/test-utils";
import { describe, test, vi, expect } from "vitest";
import { RouteNames } from "@/router";
import HomeView from "../../views/HomeView.vue";

describe("Home", () => {
    test ('navigates to game route', async () => {
        // Check if the button navigates to the game route

        const wrapper = shallowMount(HomeView);

        await wrapper.find('.btn-game').trigger('click');

        expect(MOCK_ROUTER.push).toHaveBeenCalledWith({ name: RouteNames.GAME });
    });
});

我尝试了多种方法：vi.mock('vue-router')，vi.spyOn(useRoute,'push')，vue-router-mock库，但是我无法让测试运行起来，似乎路由器就是不可用的。

更新（15/04/23）

根据 @tao 的建议，我意识到在HomeView中测试点击事件并不是一个很好的测试（测试的是库而不是我的应用程序），所以我添加了一个测试 ButtonRouterLink，看看它是否正确渲染了Vue RouterLink，使用to参数：

import {mount, shallowMount} from "@vue/test-utils";
import { describe, test, vi, expect } from "vitest";
import { RouteNames } from "@/router";
import ButtonRouterLink from "../ButtonRouterLink.vue";

vi.mock('vue-router');

describe("ButtonRouterLink", () => {
    test (`correctly transforms 'to' param into a router-link prop`, async () => {
       
        const wrapper = mount(ButtonRouterLink, {
            props: {
                to: RouteNames.GAME
            }
        });

        expect(wrapper.html()).toMatchSnapshot();
    });
});

它渲染了一个空的HTML字符串""

exports[`ButtonRouterLink > correctly transforms 'to' param into a router-link prop 1`] = `""`;

伴随着一个不太有用的Vue警告（未指定预期类型）：

[Vue warn]: Invalid prop: type check failed for prop "to". Expected , got Object  
  at <RouterLink to= { name: 'game' } class="btn btn-blue" > 
  at <ButtonRouterLink to="game" ref="VTU_COMPONENT" > 
  at <VTUROOT>
[Vue warn]: Invalid prop: type check failed for prop "ariaCurrentValue". Expected , got String with value "page". 
  at <RouterLink to= { name: 'game' } class="btn btn-blue" > 
  at <ButtonRouterLink to="game" ref="VTU_COMPONENT" > 
  at <VTUROOT>
[Vue warn]: Component is missing template or render function. 
  at <RouterLink to= { name: 'game' } class="btn btn-blue" > 
  at <ButtonRouterLink to="game" ref="VTU_COMPONENT" > 
  at <VTUROOT>