How to test React components work in Server Side Rendering

Button.server.test.tsx

/**
 * @jest-environment node
 */
 import React from 'react';
 import { renderToString } from 'react-dom/server';
 import Button from '../Button';
 
 describe('<Button> SSR', () => {
   it('should render correctly in server-side render', () => {
     const result = renderToString(
       <Button>Hello</Button>
     );
 
     expect(result).toContain('Hello');
   });
 });
 

test-setup.js

const isBrowserEnv = typeof window !== 'undefined';

if (isBrowserEnv) {
  // client render
  
  // TOOD: Make sure that you move any client only setup here
}