favorite movies spec init

favorite-movies.service.spec.ts

const moviesToUse = [
  { title: 'Interstellar' } as Movie,
  { title: 'The Green Book' } as Movie,
  { title: 'Dark Knight' } as Movie
];

describe('FavoriteMoviesService', () => {
  let serviceUnderTest: FavoriteMoviesService;

  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [FavoriteMoviesService]
    });

    serviceUnderTest = TestBed.get(FavoriteMoviesService);
  });

  it('should be created', () => {
    expect(serviceUnderTest).toBeTruthy();
  });
});