text: import React from 'react';
  import { render, queryByTestId } from '@testing-library/react';
  import '@testing-library/jest-dom'
  import Header from '../header';
  
  test('renders header', () => {
      render(<Header />);
      expect(
          queryByTestId(document.documentElement, 'header'),
      ).toBeInTheDocument()
  });
  
  test('renders header matches snapshot', () => {   
      const { asFragment } = render(<Header />);
      expect(asFragment()).toMatchSnapshot();
  });