const mockArray: Array<Book> = [
  {
    id: 1,
    title: 'Harry Potter i Komnata Tajemnic',
    author: 'JK Rowling',
    description: 'Harry Potter and the Chamber of Secrets begins',
    isbn: '978-0-32-004843-2',
    category: Categories.FANTASY,
    publicationDate: new Date(),
    publisher: 'Bloomsbury',
    rentDate: new Date(),
    coverImg: 'https://7.allegroimg.com/original/1244a0/225af28542fd9e52774594e45937',
    availability: true,
    addDate: new Date(),
    renterEmail: '',
    returnDate: new Date(),
  },
  {
    id: 2,
    title: 'Selfish gene',
    author: 'Richard Dawkins',
    description: 'Inheriting the mantle of revolutionary biologist from Darwin, Watson, and Crick',
    isbn: '978-8-53-190188-1',
    category: Categories.SCIENCE,
    publicationDate: new Date(),
    publisher: 'Proszynski',
    rentDate: new Date(),
    coverImg: 'https://images-na.ssl-images-amazon.com/images/I/51Vc-rvnKYL._SX321_BO1,204,203,200_.jpg',
    availability: true,
    addDate: new Date(),
    renterEmail: '',
    returnDate: new Date(),
  },
  {
    id: 3,
    title: 'Solaris',
    author: 'Stanislaw Lem',
    description: 'Solaris is a wonderful book, about a few scientists on a lab hovering over a vast, mysterious ocean on an alien planet.',
    isbn: '978-8-68-456901-3',
    category: Categories.FANTASY,
    publicationDate: new Date(),
    publisher: 'Amanda',
    rentDate: new Date(),
    returnDate: new Date(),
    renterEmail: 'chico@gmail.com',
    coverImg: 'http://s.lubimyczytac.pl/upload/books/133000/133717/352x500.jpg',
    availability: true,
    addDate: new Date(),
  },
  {
    id: 4,
    title: 'Java dla zielonych',
    author: 'Adrian Buller',
    description: 'Do you want to know how to make your tests green? Master many to many?',
    isbn: '978-7-11-521048-7',
    category: Categories.SCIENCE,
    publicationDate: new Date(),
    publisher: 'ABlej',
    rentDate: new Date(),
    returnDate: new Date(),
    coverImg: 'https://images-na.ssl-images-amazon.com/images/I/71r9cLugLKL.jpg',
    availability: true,
    addDate: new Date(),
    renterEmail: 'anka@wp.pl',
  },
  {
    id: 5,
    title: 'Interwencje',
    author: 'Noam Chomsky',
    description: 'Punchy essays attack Americas international role under George W Bush.',
    isbn: '978-0-24-114386-5',
    category: Categories.SCIENCE,
    publicationDate: new Date(),
    publisher: 'ABlej',
    rentDate: new Date(),
    coverImg: 'https://upload.wikimedia.org/wikipedia/en/thumb/5/52/Interventions.jpg/220px-Interventions.jpg',
    availability: true,
    addDate: new Date(),
    renterEmail: '',
    returnDate: new Date(),
  },
  {
    id: 6,
    title: 'Co do grosza',
    author: 'Jeffrey Archer',
    description: 'The conned: an Oxford don, a revered society physician',
    isbn: '978-8-37-180475-5',
    category: Categories.NOVEL,
    publicationDate: new Date(),
    publisher: 'Gentles',
    rentDate: new Date(),
    returnDate: new Date(),
    renterEmail: 'anna@wp.com',
    coverImg: 'https://s.znak.com.pl//files/covers/card/f1/T195254.jpg',
    availability: true,
    addDate: new Date(),
  },
  {
    id: 7,
    title: 'Harry Potter i Czara Ognia',
    author: 'JK Rowling',
    description: 'Harry Potter is midway through his training as a wizard',
    isbn: '978-9-18-887751-2',
    category: Categories.FANTASY,
    publicationDate: new Date(),
    publisher: 'Bloomsbery',
    rentDate: new Date(),
    returnDate: new Date(),
    renterEmail: 'hp@onet.pl',
    coverImg: 'https://images.booksense.com/images/595/139/9780439139595.jpg',
    availability: true,
    addDate: new Date(),
  },
  {
    id: 8,
    title: 'Zbrodnia i kara',
    author: 'Fiodor Dostojewski',
    description: 'Crime and Punishment focuses on the mental anguish and moral dilemmas',
    isbn: '978-8-94-520545-2',
    category: Categories.NOVEL,
    publicationDate: new Date(),
    publisher: 'Kindenberg',
    rentDate: new Date(),
    renterEmail: 'kot@gmail.com',
    coverImg: 'https://images-na.ssl-images-amazon.com/images/I/41cQTFV5hPL.jpg',
    availability: false,
    addDate: new Date(),
    returnDate: new Date(),
  },
  {
    id: 9,
    title: 'Morderstwo na plebanii',
    author: 'Agatha Christie',
    description: 'In St. Mary Mead, no one is more despised than Colonel',
    isbn: '978-9-63-079215-8',
    category: Categories.NOVEL,
    publicationDate: new Date(),
    publisher: 'Collins Crime',
    rentDate: new Date(),
    returnDate: new Date(),
    renterEmail: 'ac@interia.pl',
    coverImg: 'http://s.lubimyczytac.pl/upload/books/269000/269714/422646-352x500.jpg',
    availability: true,
    addDate: new Date(),
  },
  {
    id: 10,
    title: 'Tajemnicza historia w Styles',
    author: 'Agatha Christie',
    description: 'One morning at Styles Court, an Essex country manor',
    isbn: '978-1-72-183293-4',
    category: Categories.NOVEL,
    publicationDate: new Date(),
    publisher: 'Collins Crime',
    rentDate: new Date(),
    returnDate: new Date(),
    renterEmail: 'ac@interia.pl',
    coverImg: 'http://ecsmedia.pl/c/tajemnicza-historia-w-styles-w-iext37523258.jpg',
    availability: true,
    addDate: new Date(),
  },
  {
    id: 11,
    title: 'Więźniowie geografii',
    author: 'Tim Marshall',
    description: 'Ten Maps That Tell You Everything You Need to Know About Global Politics.',
    isbn: '978-8-81-114792-3',
    category: Categories.SCIENCE,
    publicationDate: new Date(),
    publisher: 'Elliot',
    rentDate: new Date(),
    returnDate: new Date(),
    renterEmail: 'pojaj@gmail.com',
    coverImg: 'http://s.lubimyczytac.pl/upload/books/4367000/4367313/554065-352x500.jpg',
    availability: false,
    addDate: new Date(),
  },
  {
    id: 12,
    title: 'Więźniowie geografii',
    author: 'Tim Marshall',
    description: 'Ten Maps That Tell You Everything You Need to Know About Global Politics.',
    isbn: '978-8-81-114792-3',
    category: Categories.SCIENCE,
    publicationDate: new Date(),
    publisher: 'Elliot',
    rentDate: new Date(),
    coverImg: 'http://s.lubimyczytac.pl/upload/books/4367000/4367313/554065-352x500.jpg',
    availability: true,
    addDate: new Date(),
    renterEmail: '',
    returnDate: new Date()
  }
];

let service: BooksService;
let httpClient: HttpTestingController;
let injector: TestBed;

describe('BooksService', () => {
  beforeEach(async () =>
    TestBed.configureTestingModule({
      imports: [HttpClientTestingModule]
    })
  );

  beforeEach(() => {
    injector = getTestBed();
    httpClient = injector.get(HttpTestingController);
    service = TestBed.get(BooksService);
  });

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

  it('should search books', () => {
    const text = 'har';
    let searchedBooks: Array<Book>;
    spyOn(service, 'getBooks').and.returnValue(of(mockArray));
    service.searchBooks(text).subscribe(books => (searchedBooks = books));
    expect(searchedBooks.length).toBe(3);
  });