element-plus/packages/badge/__tests__/badge.spec.ts

import {mount} from '@vue/test-utils'
import Badge from '../src/index.vue'

const AXIOM = 'Rem is the best girl'

describe('Badge', () => {
  test('has value', () => {
    const wrapper = mount(Badge, {
      props: {value: 80}
    })
    expect(wrapper.vm.content).toEqual(80)
  })

  test('is fixed', () => {
    const wrapper = mount(Badge, {
      slots: {default: AXIOM}
    })
    expect(wrapper.find('.el-badge__content.is-fixed')).toBeDefined()
  })

  test('is dot', () => {
    const wrapper = mount(Badge, {
      props: {isDot: true},
      slots: {default: AXIOM}
    })
    expect(wrapper.find('.el-badge__content.is-fixed')).toBeDefined()
  })

  test('max', async () => {
    const wrapper = mount(Badge, {
      props: {max: 100, value: 200},
    })
    expect(wrapper.vm.content).toEqual('100+')
    await wrapper.setProps({value: 80})
    expect(wrapper.vm.content).toEqual(80)
  })
})