Vue,Vue Cli,VueCli Unit Test

Vite Vue List

子組件 Nav.vue單元測試

父組件

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<template>
    <Nav 
    :navLists="navLists"
    :pageNameActive="pageNameActive"
    @sendMenuClickActive="menuClickActive"
    />   
<main>
    <KeepAlive>
        <router-view />
    </KeepAlive>
      
</main>
<footer>
    <div class="reserved">LaraHuang 版權所有</div>
</footer>

</template>

<script setup lang="ts">
import { ref, onMounted } from 'vue';
import Nav from '../components/Nav.vue';

import {navType} from '../types/nav'

    const navLists = ref<navType[]>([
        { id_set: '001', title: 'Home', href: '/' ,icon: 'icon-location2' },
        { id_set: '002', title: 'List', href: '/list',icon: 'icon-cog' },
        { id_set: '003', title: 'Pinia', href: '/pinia',icon: 'icon-cog' },
    ])
    const pageNameActive=ref<string>('001');
    const menuClickActive =(item:navType)=>{
        // pageNameActive.value= localStorage.getItem('pageName')as string
        pageNameActive.value = item.id_set;
    }
</script>

測試子組件如下Nav.vue

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<template>
<div class="flex justify-center header">
   <a href="/me">  <b  class="flex justify-center"><h1>Lara 單元測試</h1></b> </a>
</div>
<ul class="nav flex justify-center h-12 leading-10 border_bottom_solid_2 bg_c6e2ff">
    <li class="flex mx-2" 
        v-for="(item,id_set) in navLists" :key="id_set"
        :class="pageNameActive == item.id_set ? 'isActive' : ''"
         @click="sendMenuClickActive(item)"
    >
    <router-link :to="item.href" data-test="button" >   
        {{ item.title }}
    </router-link>    
    </li>
</ul>
</template>

<script setup lang="ts">
import {navType} from '../types/nav'
    const props = defineProps({ 
        pageNameActive:{type:String},
        navLists:{type:Object}
    })
    const emit = defineEmits(['sendMenuClickActive'])
    const sendMenuClickActive=(_item:navType)=>{
        emit('sendMenuClickActive',_item)
    }
</script>
mount:掛載。
props:父傳子。
data-test:在html綁定。
findAll():與 類似find，傳回數組DOMWrapper。
expect(value):攥寫每一筆測試時都會使用 expect(value) 和匹配器 (matcher) 來『斷言』某個值，expect (value) 的參數 value 會是程式碼產生的值
toContain('C'):包含
findComponent():尋找 Vue 元件實例，VueWrapper如果找到則傳回。否則返回ErrorWrapper。
emitted():子傳遞給父元件
toHaveLength(Number):Length數量
toEqual():等於
toHaveProperty():屬性的值
測試內容 describe:是用來將一至多組有相關的測試組合在一起的區塊。 
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import { describe, it, expect } from 'vitest'
import { mount } from '@vue/test-utils'
import Nav from '../Nav.vue'
//Nav.vue 從父元件frontLayout.vue獲得以下陣列
describe('Nav.vue 從父元素 frontLayout.vue 取得以下陣列', () =>
{ 
    const navLists = [
        { id_set: '001', title: 'Home', href: '/' ,icon: 'icon-location2' },
        { id_set: '002', title: 'List', href: '/list',icon: 'icon-cog' },
        { id_set: '003', title: 'Pinia', href: '/pinia',icon: 'icon-cog' },
    ]
    const pageNameActive = '001';
      let wrapper
    if (typeof document !== 'undefined') {
        wrapper = mount(Nav, {
            props: {
                navLists: navLists,
                pageNameActive: pageNameActive
            }
        })
    }
    
    it('navLists資料是否正確渲染訊息? ', () =>
    {
        if (typeof document !== 'undefined') {
            //尋找所有 li標籤
            const items = wrapper.findAll('li');

            expect(items.length).toBe(items.length);
            expect(items[0].text()).toBe('Home');
            expect(items[1].text()).toBe('List');
            expect(items[2].text()).toBe('Pinia');
        }
       
      
    });
    it('Active 傳遞初始值時渲染', () => { 
        expect(pageNameActive).toMatch(pageNameActive);
    })

    it('點擊時發出當前資料的事件，Li會新增isActive Class',  async() =>
    { 
        if (typeof document !== 'undefined') {
            const items = wrapper.findAll('li');
            const li = wrapper.find('li');
           // 點擊按鈕
            await wrapper.get('[data-test="button"]').trigger('click')
            //斷言唯一碼必想等
            expect(pageNameActive).toMatch(items[0].id_set);
            expect(pageNameActive).toMatch(items[1].id_set)
            expect(pageNameActive).toMatch(items[2].id_set)
           // 斷言li 會包含一個isActive Class
             expect(wrapper.get('li').classes()).toContain('isActive')
        }
    })
    it('按一下時檢索當前資料的事件', async () =>
    {
        if (typeof document !== 'undefined') {
            // 點擊按鈕
            await wrapper.get('[data-test="button"]').trigger('click')
            // 子傳父到sendMenuClickActive 函式
            expect(wrapper.emitted()).toHaveProperty('sendMenuClickActive')
        }
    })
})