  @Test
  public void shouldReturnPriceWithoutDiscountWithABasketWithTwoSameBooks() {

    BasketCalculator basketCalculator = new BasketCalculator();
    List<String> basket = givenBasketWithBooks(FIRST_BOOK, FIRST_BOOK);

    float amount = basketCalculator.calculatePrice(basket);

    assertEquals(8 * 2, amount, DELTA_ZERO);
  }