react-native-navigation/lib/src/events/EventsRegistry.test.tsx

import { EventsRegistry } from './EventsRegistry';
import { NativeEventsReceiver } from '../adapters/NativeEventsReceiver.mock';
import { CommandsObserver } from './CommandsObserver';
import { UniqueIdProvider } from '../adapters/UniqueIdProvider';

describe('EventsRegistry', () => {
  let uut: EventsRegistry;
  const mockNativeEventsReceiver = new NativeEventsReceiver();
  let commandsObserver: CommandsObserver;
  const mockScreenEventsRegistry = {} as any;

  beforeEach(() => {
    commandsObserver = new CommandsObserver(new UniqueIdProvider());
    uut = new EventsRegistry(mockNativeEventsReceiver, commandsObserver, mockScreenEventsRegistry);
  });

  it('exposes appLaunched event', () => {
    const subscription = {};
    const cb = jest.fn();
    mockNativeEventsReceiver.registerAppLaunchedListener.mockReturnValueOnce(subscription);

    const result = uut.registerAppLaunchedListener(cb);

    expect(result).toBe(subscription);
    expect(mockNativeEventsReceiver.registerAppLaunchedListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerAppLaunchedListener).toHaveBeenCalledWith(cb);
  });

  it('delegates didAppear to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerComponentDidAppearListener(cb);
    expect(mockNativeEventsReceiver.registerComponentDidAppearListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerComponentDidAppearListener).toHaveBeenCalledWith(cb);
  });

  it('delegates didDisappear to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerComponentDidDisappearListener(cb);
    expect(mockNativeEventsReceiver.registerComponentDidDisappearListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerComponentDidDisappearListener).toHaveBeenCalledWith(cb);
  });

  it('delegates commandCompleted to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerCommandCompletedListener(cb);
    expect(mockNativeEventsReceiver.registerCommandCompletedListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerCommandCompletedListener).toHaveBeenCalledWith(cb);
  });

  it('delegates BottomTabsSelected to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerBottomTabSelectedListener(cb);
    expect(mockNativeEventsReceiver.registerBottomTabSelectedListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerBottomTabSelectedListener).toHaveBeenCalledWith(cb);
  });

  it('delegates navigationButtonPressed to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerNavigationButtonPressedListener(cb);
    expect(mockNativeEventsReceiver.registerNavigationButtonPressedListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerNavigationButtonPressedListener).toHaveBeenCalledWith(cb);
  });

  it('delegates modalDismissed to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerModalDismissedListener(cb);
    expect(mockNativeEventsReceiver.registerModalDismissedListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerModalDismissedListener).toHaveBeenCalledWith(cb);
  });

  it('delegates searchBarUpdated to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerSearchBarUpdatedListener(cb);
    expect(mockNativeEventsReceiver.registerSearchBarUpdatedListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerSearchBarUpdatedListener).toHaveBeenCalledWith(cb);
  });

  it('delegates searchBarCancelPressed to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerSearchBarCancelPressedListener(cb);
    expect(mockNativeEventsReceiver.registerSearchBarCancelPressedListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerSearchBarCancelPressedListener).toHaveBeenCalledWith(cb);
  });

  it('delegates previewCompleted to nativeEventsReceiver', () => {
    const cb = jest.fn();
    uut.registerPreviewCompletedListener(cb);
    expect(mockNativeEventsReceiver.registerPreviewCompletedListener).toHaveBeenCalledTimes(1);
    expect(mockNativeEventsReceiver.registerPreviewCompletedListener).toHaveBeenCalledWith(cb);
  });

  it('delegates registerCommandListener to commandObserver', () => {
    const cb = jest.fn();
    const result = uut.registerCommandListener(cb);
    expect(result).toBeDefined();
    commandsObserver.notify('theCommandName', { x: 1 });
    expect(cb).toHaveBeenCalledTimes(1);
    expect(cb).toHaveBeenCalledWith('theCommandName', { x: 1 });
  });

  it('registerCommandListener unregister', () => {
    const cb = jest.fn();
    const result = uut.registerCommandListener(cb);
    result.remove();
    commandsObserver.notify('theCommandName', { x: 1 });
    expect(cb).not.toHaveBeenCalled();
  });

  it(`delegates bindComponent to ComponentObserver`, () => {
    const subscription = {};
    mockScreenEventsRegistry.bindComponent = jest.fn();
    mockScreenEventsRegistry.bindComponent.mockReturnValueOnce(subscription);
    expect(uut.bindComponent({} as React.Component<any>)).toEqual(subscription);
  });
});