shlink-web-client/test/app/App.test.tsx

import { render, screen } from '@testing-library/react';
import { Router } from 'react-router-dom';
import { createMemoryHistory } from 'history';
import { Mock } from 'ts-mockery';
import { Settings } from '../../src/settings/reducers/settings';
import { App as createApp } from '../../src/app/App';

describe('<App />', () => {
  const App = createApp(
    () => <>MainHeader</>,
    () => <>Home</>,
    () => <>MenuLayout</>,
    () => <>CreateServer</>,
    () => <>EditServer</>,
    () => <>SettingsComp</>,
    () => <>ManageServers</>,
    () => <>ShlinkVersions</>,
  );
  const setUp = (activeRoute = '/') => {
    const history = createMemoryHistory();
    history.push(activeRoute);

    return render(
      <Router location={history.location} navigator={history}>
        <App
          fetchServers={() => {}}
          servers={{}}
          settings={Mock.all<Settings>()}
          appUpdated
          resetAppUpdate={() => {}}
        />
      </Router>,
    );
  };

  afterEach(jest.clearAllMocks);

  it('renders children components', () => {
    setUp();

    expect(screen.getByText('MainHeader')).toBeInTheDocument();
    expect(screen.getByText('ShlinkVersions')).toBeInTheDocument();
    expect(screen.getByText('This app has just been updated!')).toBeInTheDocument();
  });

  it.each([
    ['/settings/foo', 'SettingsComp'],
    ['/settings/bar', 'SettingsComp'],
    ['/manage-servers', 'ManageServers'],
    ['/server/create', 'CreateServer'],
    ['/server/abc123/edit', 'EditServer'],
    ['/server/def456/edit', 'EditServer'],
    ['/server/abc123/foo', 'MenuLayout'],
    ['/server/def456/bar', 'MenuLayout'],
    ['/other', 'Oops! We could not find requested route.'],
  ])('renders expected route', async (activeRoute, expectedComponent) => {
    setUp(activeRoute);
    expect(await screen.findByText(expectedComponent)).toBeInTheDocument();
  });

  it.each([
    ['/foo', 'shlink-wrapper'],
    ['/bar', 'shlink-wrapper'],
    ['/', 'shlink-wrapper d-flex d-md-block align-items-center'],
  ])('renders expected classes on shlink-wrapper based on current pathname', (pathname, expectedClasses) => {
    const { container } = setUp(pathname);
    const shlinkWrapper = container.querySelector('.shlink-wrapper');

    expect(shlinkWrapper).toHaveAttribute('class', expectedClasses);
  });
});