vitest/examples/react-enzyme/test/Button.test.tsx

import React from 'react'
import { shallow } from 'enzyme'
import { beforeEach, describe, expect, test, vi } from 'vitest'

import Button from '../components/Button'

describe('Button component', () => {
  let wrapper
  const mockedOnSubmit = vi.fn()

  beforeEach(() => {
    wrapper = shallow(<Button onClick={mockedOnSubmit} text={'some-text'} />)
  })

  test('should render with correct props', () => {
    expect(wrapper).toBeDefined()
    expect(wrapper.name()).toBe('button')

    expect(wrapper.prop('className')).toBe('some-className')
    expect(typeof wrapper.prop('onClick')).toBe('function')

    expect(wrapper.text()).toBe('some-text')
  })

  test('should invoke onClick prop by clicking on the button', () => {
    wrapper.simulate('click')
    expect(mockedOnSubmit).toHaveBeenCalled()
  })
})