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

import React from 'react';
import { useClusters } from 'lib/hooks/api/clusters';
import Dashboard from 'components/Dashboard/Dashboard';
import { Cluster, ServerStatus } from 'generated-sources';
import { render } from 'lib/testHelpers';

interface DataType {
  data: Cluster[] | undefined;
}
jest.mock('lib/hooks/api/clusters');
const mockedNavigate = jest.fn();
jest.mock('react-router-dom', () => ({
  ...jest.requireActual('react-router-dom'),
  useNavigate: () => mockedNavigate,
}));
describe('Dashboard component', () => {
  const renderComponent = (hasDynamicConfig: boolean, data: DataType) => {
    const useClustersMock = useClusters as jest.Mock;
    useClustersMock.mockReturnValue(data);
    render(<Dashboard />, {
      globalSettings: { hasDynamicConfig },
    });
  };
  it('redirects to new cluster configuration page if there are no clusters and dynamic config is enabled', async () => {
    await renderComponent(true, { data: undefined });

    expect(mockedNavigate).toHaveBeenCalled();
  });

  it('should not navigate to new cluster config page when there are clusters', async () => {
    await renderComponent(true, {
      data: [{ name: 'Cluster 1', status: ServerStatus.ONLINE }],
    });

    expect(mockedNavigate).not.toHaveBeenCalled();
  });

  it('should not navigate to new cluster config page when there are no clusters and hasDynamicConfig is false', async () => {
    await renderComponent(false, {
      data: [],
    });

    expect(mockedNavigate).not.toHaveBeenCalled();
  });
});