@Test
public void sub_basket_set_collection_should_has_3_item() {
BasketSuite suite = new BasketSuite();
suite.addBook("first", 2);
suite.addBook("second", 2);
suite.addBook("third", 2);
suite.addBook("forth", 1);
suite.addBook("fifth", 1);
assertThat(suite.getDiscountPrice(), is(51.2));
}
@Test
public void sub_basket_set_collection_should_has_only_one_item() {
BasketSuite suite = new BasketSuite();
suite.addBook("first", 1);
assertThat(suite.getSubBasketSets().size(), is(1));
}