// 测试Discount的添加折扣商品函数
@Test
public void AddDiscountItem_and_AddGiveItem() {
Discount dis = Discount.Initial();
dis.ClearDiscount();
dis.AddDiscountItem("ITEM000001");
dis.AddDiscountItem("ITEM000002");
dis.AddGiveItem("ITEM000001");
dis.AddGiveItem("ITEM000003");
PromotionType type1 = dis.IsPromotion("ITEM000001");
assertEquals(type1, PromotionType.BUYTWOGIVEONE);
PromotionType type2 = dis.IsPromotion("ITEM000002");
assertEquals(type2, PromotionType.DISCOUNT);
PromotionType type3 = dis.IsPromotion("ITEM000003");
assertEquals(type3, PromotionType.BUYTWOGIVEONE);
PromotionType type4 = dis.IsPromotion("ITEM000005");
assertEquals(type4, PromotionType.NOPROMOTION);
}
@Test
public void should_calculate_price_CalculatePrice() {
Discount dis = Discount.Initial();
dis.ClearDiscount();
dis.AddGiveItem("ITEM000001");
dis.AddDiscountItem("ITEM000005");
PurchaseList list = new PurchaseList();
list.AddPurchaseListItem("ITEM000001");
list.AddPurchaseListItem("ITEM000001");
list.AddPurchaseListItem("ITEM000001");
list.AddPurchaseListItem("ITEM000002-2");
list.AddPurchaseListItem("ITEM000005-3");
list.ParsePurchaseList();
Map<String, PurchaseItem> returnlist = list.getPurchaseList();
PurchaseItem item1 = returnlist.get("ITEM000001");
assertEquals(item1.getDiscountprice(), 98, 0.1);
assertEquals(item1.getRealprice(), 294, 0.1);
PurchaseItem item2 = returnlist.get("ITEM000002");
assertEquals(item2.getDiscountprice(), 0, 0.1);
assertEquals(item2.getRealprice(), 2, 0.1);
PurchaseItem item3 = returnlist.get("ITEM000005");
assertEquals(item3.getRealprice(), 9, 0.1);
assertEquals(item3.getDiscountprice(), 0.45, 0.1);
}