如何使用jest测试react组件？

npm install --save-dev jest react-test-renderer

import React from 'react';
import { render } from '@testing-library/react';
import MyComponent from '../MyComponent';

test('renders MyComponent without error', () => {
  render(<MyComponent />);
});

npm test

import React from 'react';
import { render, fireEvent } from '@testing-library/react';
import MyComponent from '../MyComponent';

test('calls onClick handler when button is clicked', () => {
  const handleClick = jest.fn();
  const { getByRole } = render(<MyComponent onClick={handleClick} />);
  const button = getByRole('button');

  fireEvent.click(button);
  expect(handleClick).toHaveBeenCalledTimes(1);
});