概述

• button 組件在組件庫中相對來說算是一個比較簡單且獨(dú)立的組件
• 創(chuàng)建 packages/components/Button 目錄存放按鈕組件

詳情

• packages/components/Button/Button.vue

<template>
  <button style="background-color: blue; color: red">button</button>
</template>

<script setup lang="ts">
defineOptions({
  name: 'LxxButton',
})
</script>

• packages/components/Button/index.ts

import Button from './Button.vue'
import { withInstall } from '@lxx-ui/utils'

// 將組件轉(zhuǎn)換成插件
export const LxxButton = withInstall(Button)

• packages/components/Button/Button.test.tsx

import { describe, it, expect } from 'vitest'
import { mount } from '@vue/test-utils'

import Button from './Button.vue'

describe('Button.vue', () => {
  // Props: type
  it('should has the correct type class when type prop is set', () => {
    const types = ['primary', 'success', 'warning', 'danger', 'info']
    types.forEach((type) => {
      const wrapper = mount(Button, {
        props: { type: type as any },
      })
      expect(wrapper.classes()).toContain(`er-button--${type}`)
    })
  })

  // Props: size
  it('should has the correct size class when size prop is set', () => {
    const sizes = ['large', 'default', 'small']
    sizes.forEach((size) => {
      const wrapper = mount(Button, {
        props: { size: size as any },
      })
      expect(wrapper.classes()).toContain(`er-button--${size}`)
    })
  })

  // Props: plain, round, circle
  it.each([
    ['plain', 'is-plain'],
    ['round', 'is-round'],
    ['circle', 'is-circle'],
    ['disabled', 'is-disabled'],
    ['loading', 'is-loading'],
  ])(
    'should has the correct class when prop %s is set to true',
    (prop, className) => {
      const wrapper = mount(Button, {
        props: { [prop]: true },
        global: {
          stubs: ['ErIcon'],
        },
      })
      expect(wrapper.classes()).toContain(className)
    }
  )

  it('should has the correct native type attribute when native-type prop is set', () => {
    const wrapper = mount(Button, {
      props: { nativeType: 'submit' },
    })
    expect(wrapper.element.tagName).toBe('BUTTON')
    expect((wrapper.element as any).type).toBe('submit')
  })

  // Props: tag
  it('should renders the custom tag when tag prop is set', () => {
    const wrapper = mount(Button, {
      props: { tag: 'a' },
    })
    expect(wrapper.element.tagName.toLowerCase()).toBe('a')
  })

  // Events: click
  it('should emits a click event when the button is clicked', async () => {
    const wrapper = mount(Button, {})
    await wrapper.trigger('click')
    expect(wrapper.emitted().click).toHaveLength(1)
  })
})