Testing Virtual DOM Components — Unit Tests and Snapshot Testing

In this tutorial, you will learn about Testing Virtual Dom Components. We cover key concepts, practical examples, and best practices to help you master this topic.

Testing components built with Virtual DOM frameworks requires tools that render virtual nodes into a test environment.

import { render, screen, fireEvent } from '@testing-library/react';

test('increments counter', () => {
  render(<Counter initial={0} />);
  const button = screen.getByText('+');
  fireEvent.click(button);
  expect(screen.getByText('1')).toBeInTheDocument();
});