xt-ems-front/test/Counter.spec.js

import { shallowMount } from '@vue/test-utils'
import Counter from '../src/Counter.vue'

describe('Counter.vue', () => {
  it('计数器在点击按钮时自增', () => {
    const wrapper = shallowMount(Counter)
    wrapper.find('button').trigger('click')
    expect(wrapper.find('div').text()).toMatch('1')
  })
})