frontend-app-authoring/src/library-authoring/component-comparison/CompareChangesWidget.test.tsx at bf0d7ea89ab54160e9f2d46870ed05878a18322e · openedx/frontend-app-authoring · GitHub

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import {
  fireEvent,
  render,
  screen,
  initializeMocks,
  within,
} from '../../testUtils';

import CompareChangesWidget from './CompareChangesWidget';

const usageKey = 'lb:org:lib:type:id';

describe('<CompareChangesWidget />', () => {
  beforeEach(() => {
    initializeMocks();
  });

  it('can compare published (old) and draft (new) versions by default', async () => {
    render(<CompareChangesWidget usageKey={usageKey} />);

    // By default we see the new version:
    const newTab = await screen.findByRole('tab', { name: 'New version' });
    expect(newTab).toBeInTheDocument();
    expect(newTab).toHaveClass('active');

    const newTabPanel = await screen.findByRole('tabpanel', { name: 'New version' });
    const newIframe = within(newTabPanel).getByTitle('Preview');
    expect(newIframe).toBeVisible();
    expect(newIframe).toHaveAttribute(
      'src',
      `http://localhost:18010/xblocks/v2/${usageKey}/embed/student_view/?version=draft`,
    );

    // Now switch to the "old version" tab:
    const oldTab = await screen.findByRole('tab', { name: 'Old version' });
    fireEvent.click(oldTab);

    const oldTabPanel = await screen.findByRole('tabpanel', { name: 'Old version' });
    expect(oldTabPanel).toBeVisible();
    const oldIframe = within(oldTabPanel).getByTitle('Preview');
    expect(oldIframe).toBeVisible();
    expect(oldIframe).toHaveAttribute(
      'src',
      `http://localhost:18010/xblocks/v2/${usageKey}/embed/student_view/?version=published`,
    );
  });

  it('can compare a specific old and published (new) version', async () => {
    render(<CompareChangesWidget usageKey={usageKey} oldVersion={7} newVersion="published" />);

    // By default we see the new version:
    const newTab = await screen.findByRole('tab', { name: 'New version' });
    expect(newTab).toBeInTheDocument();
    expect(newTab).toHaveClass('active');

    const newTabPanel = await screen.findByRole('tabpanel', { name: 'New version' });
    const newIframe = within(newTabPanel).getByTitle('Preview');
    expect(newIframe).toBeVisible();
    expect(newIframe).toHaveAttribute(
      'src',
      `http://localhost:18010/xblocks/v2/${usageKey}/embed/student_view/?version=published`,
    );

    // Now switch to the "old version" tab:
    const oldTab = await screen.findByRole('tab', { name: 'Old version' });
    fireEvent.click(oldTab);

    const oldTabPanel = await screen.findByRole('tabpanel', { name: 'Old version' });
    expect(oldTabPanel).toBeVisible();
    const oldIframe = within(oldTabPanel).getByTitle('Preview');
    expect(oldIframe).toBeVisible();
    expect(oldIframe).toHaveAttribute(
      'src',
      `http://localhost:18010/xblocks/v2/${usageKey}/embed/student_view/?version=7`,
    );
  });

  it('renders side-by-side compare mode with both iframes and expected sources', async () => {
    render(<CompareChangesWidget usageKey={usageKey} oldVersion={7} newVersion="published" sideBySide />);

    expect(await screen.findByText('Old version')).toBeInTheDocument();
    expect(await screen.findByText('New version')).toBeInTheDocument();

    const iframes = await screen.findAllByTitle('Preview');
    expect(iframes).toHaveLength(2);
    expect(iframes[0]).toHaveAttribute(
      'src',
      `http://localhost:18010/xblocks/v2/${usageKey}/embed/student_view/?version=7`,
    );
    expect(iframes[1]).toHaveAttribute(
      'src',
      `http://localhost:18010/xblocks/v2/${usageKey}/embed/student_view/?version=published`,
    );
  });
});