import { Test, TestingModule } from '@nestjs/testing';
import { TrackingService } from '@/tracking/tracking.service';
import { TrackingDto } from '@/dtos/tracking.dto';
import { TrackingController } from '@/tracking/tracking.controller';

describe('TrackingController', () => {
  let trackingInfo: TrackingDto;
  let controller: TrackingController;
  let trackingService: TrackingService;

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      controllers: [TrackingController],
    })
      .useMocker((token) => {
        if (token === TrackingService) {
          return { track: jest.fn().mockResolvedValue(true) };
        }
      })

      .compile();

    controller = module.get<TrackingController>(TrackingController);
    trackingService = module.get<TrackingService>(TrackingService);

    trackingInfo = {
      carrierName: 'Evergreen',
      destinationUnLoCode: 'CNNBO',
      departureDate: new Date('2023-05-14T11:00:00.000Z'),
      arrivalDateEstimate: new Date('2023-02-14T15:00:00.000Z'),
      containerNumber: 'EGLU866139144',
    };
  });

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

  it('should have a method track', () => {
    expect(controller.track).toBeDefined();
  });

  it('should return an object with message: ok', async () => {
    await expect(controller.track(trackingInfo)).resolves.toEqual({
      message: 'Ok',
    });
  });

  it('should pass on any exception thrown from tracking service', async () => {
    jest
      .spyOn(trackingService, 'track')
      .mockRejectedValue(new Error('Test Error'));

    await expect(controller.track(trackingInfo)).rejects.toThrow('Test Error');
  });
});