kafka-ui/kafka-ui-react-app/src/components/Dashboard/__test__/Dashboard.spec.tsx

import React from 'react';
import Dashboard from 'components/Dashboard/Dashboard';
import { render } from 'lib/testHelpers';
import { screen } from '@testing-library/dom';

jest.mock('components/Dashboard/ClustersWidget/ClustersWidget', () => () => (
  <div>mock-ClustersWidget</div>
));

describe('Dashboard', () => {
  it('renders ClustersWidget', () => {
    render(<Dashboard />);
    expect(screen.getByText('Dashboard')).toBeInTheDocument();
    expect(screen.getByText('mock-ClustersWidget')).toBeInTheDocument();
  });
});