import { Test, TestingModule } from '@nestjs/testing';
import { MessagePublisher } from '../../../../adapters/secondaries/message-publisher';
import { MESSAGE_BROKER_PUBLISHER } from '../../../../../../app.constants';

const mockMessageBrokerPublisher = {
  publish: jest.fn().mockImplementation(),
};

describe('Messager', () => {
  let messagePublisher: MessagePublisher;

  beforeAll(async () => {
    const module: TestingModule = await Test.createTestingModule({
      imports: [],
      providers: [
        MessagePublisher,
        {
          provide: MESSAGE_BROKER_PUBLISHER,
          useValue: mockMessageBrokerPublisher,
        },
      ],
    }).compile();

    messagePublisher = module.get<MessagePublisher>(MessagePublisher);
  });

  it('should be defined', () => {
    expect(messagePublisher).toBeDefined();
  });

  it('should publish a message', async () => {
    jest.spyOn(mockMessageBrokerPublisher, 'publish');
    messagePublisher.publish('ad.info', 'my-test');
    expect(mockMessageBrokerPublisher.publish).toHaveBeenCalledTimes(1);
  });
});