112 lines
4.3 KiB
JavaScript
112 lines
4.3 KiB
JavaScript
/**
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* jest: https://jestjs.io/docs/getting-started
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* vue-jest: https://test-utils.vuejs.org/guide/
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* */
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import Test from '../src/Test'
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import { mount } from '@vue/test-utils'
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import { getNameByEventType } from '@/utils/tools'
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import axios from 'axios'
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// 模拟的axios返回数据
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const mockId = { data: 2 }
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const mockTitle = { data: 'title2' }
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const mockCount = { data: 999 }
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describe('单元测试demo', () => {
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test('Vue组件--点击按钮后count的值+1', async () => {
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// 若组件中使用了vue-router，需要细化模拟相关内容
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require('vue-router').useRoute.mockReturnValue({ query: {} })
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require('vue-router').useRouter.mockReturnValue({ currentRoute: { value: { path: '/' } } })
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// 加载vue组件，获得实例
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const wrapper = mount(Test)
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// 取到文本和按钮的dom
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const textNode = await wrapper.get('[test-id="count"]')
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const button = await wrapper.get('[test-id="button"]')
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// 断言文本dom的内容是否是'0'
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expect(textNode.text()).toBe('0')
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// 模拟按钮dom点击，执行click()方法
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await button.trigger('click')
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// 断言点击按钮后文本dom的内容是否是'1'
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expect(textNode.text()).toBe('1')
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// 再次点击
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await button.trigger('click')
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// 断言点击按钮后文本dom的内容是否是'2'
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expect(textNode.text()).toBe('2')
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/* 更多断言类型：https://jestjs.io/docs/expect */
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})
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test('Vue组件--获取路由中的参数', async () => {
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// query中带上lineTab参数
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require('vue-router').useRoute.mockReturnValue({ query: { lineTab: 'total' } })
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require('vue-router').useRouter.mockReturnValue({ currentRoute: { value: { path: '/' } } })
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// 加载vue组件，获得实例
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const wrapper = mount(Test)
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// 取到文本和按钮的dom
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const textNode = await wrapper.get('[test-id="tab"]')
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expect(textNode.text()).toBe('total')
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})
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test('Vue组件--模拟获取localstorage/sessionStorage的内容', async () => {
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require('vue-router').useRoute.mockReturnValue({ query: {} })
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require('vue-router').useRouter.mockReturnValue({ currentRoute: { value: { path: '/' } } })
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// 模拟getItem
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jest.spyOn(localStorage.__proto__, 'getItem').mockImplementation(key => key)
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// 加载vue组件，获得实例
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const wrapper = mount(Test)
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expect(wrapper.vm.localstorageValue).toBe('key')
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})
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test('Vue组件--直接获取vue实例中的data和method', async () => {
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require('vue-router').useRoute.mockReturnValue({ query: {} })
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require('vue-router').useRouter.mockReturnValue({ currentRoute: { value: { path: '/' } } })
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// 模拟axios返回数据
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// 测试内容只有一个axios请求的时候
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axios.get.mockResolvedValue(mockCount)
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// 加载vue组件，获得实例
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const wrapper = mount(Test, {
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global: {
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mocks: {
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$t: key => key
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}
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}
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})
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const textNode = await wrapper.get('[test-id="count"]')
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// 通过wrapper.vm.xxx直接执行click方法、获取data的数据
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expect(wrapper.vm.count).toBe(0)
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await wrapper.vm.click()
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expect(wrapper.vm.count).toBe(1)
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await wrapper.vm.getCount()
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await wrapper.vm.$nextTick(() => {
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expect(textNode.text()).toBe('999')
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})
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})
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test('Vue组件--多个axios请求', async () => {
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require('vue-router').useRoute.mockReturnValue({ query: {} })
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require('vue-router').useRouter.mockReturnValue({ currentRoute: { value: { path: '/' } } })
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// 模拟axios返回数据
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// 测试内容有多个url不同的axios请求的话，需分开写
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axios.get.mockImplementation(url => {
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switch (url) {
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case '/api/getObjId':
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return Promise.resolve(mockId)
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case '/api/getObjTitle':
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return Promise.resolve(mockTitle)
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}
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})
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// 加载vue组件，获得实例
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const wrapper = mount(Test)
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const textNode = await wrapper.get('[test-id="id"]')
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const textNode2 = await wrapper.get('[test-id="title"]')
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expect(textNode2.text()).toBe('title')
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await wrapper.vm.getObj()
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await wrapper.vm.$nextTick(() => {
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expect(textNode.text()).toBe('2')
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expect(textNode2.text()).toBe('title2')
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// 匹配整个对象
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expect(wrapper.vm.obj).toEqual({ id: 2, title: 'title2' })
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})
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})
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test('js方法--getNameByEventType', async () => {
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expect(getNameByEventType('http error')).toBe('http error ratio')
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})
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})
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