static void Main(string[] args)
{
ShoppingCart cart1 = new ShoppingCart();
//Case 1
cart1.Add(new PercentOffOnNextItem(10));
cart1.Add(new SaleableItem(10));
cart1.Add(new SaleableItem(20));
Console.WriteLine("Cart 1 Total:" + cart1.getTotal());
ShoppingCart cart2 = new ShoppingCart();
//Case 2
cart2.Add(new SaleableItem(10));
cart2.Add(new PercentOffOnNextItem(10));
cart2.Add(new SaleableItem(20));
Console.WriteLine("Cart 2 Total:" + cart2.getTotal());
ShoppingCart cart3 = new ShoppingCart();
//Case 3
cart3.Add(new SaleableItem(10));
cart3.Add(new FlatCoupon(2));
cart3.Add(new DiscountInPercent(25));
cart3.Add(new PercentOffOnNextItem(10));
cart3.Add(new SaleableItem(10));
Console.WriteLine("Cart 3 Total:" + cart3.getTotal());
Console.ReadLine();
}
public void CalAmountTest_一二集各買了一本_第三集買了兩本_價格應為370()
{
//arrange
ShoppingCart target = new ShoppingCart();
target.Add(new ProductModel() { ID = 1, Price = 100m });
target.Add(new ProductModel() { ID = 2, Price = 100m });
target.Add(new ProductModel() { ID = 3, Price = 100m });
target.Add(new ProductModel() { ID = 3, Price = 100m });
decimal expected = 370;
//act
decimal actual;
actual = target.CalAmount();
//assert
Assert.AreEqual(expected, actual);
}
public void CalAmountTest_第一集買了一本_其他都沒買_價格應為100()
{
//arrange
ShoppingCart target = new ShoppingCart();
target.Add(new ProductModel() { ID = 1, Price = 100m });
decimal expected = 100m;
//act
decimal actual;
actual = target.CalAmount();
//assert
Assert.AreEqual(expected, actual);
}
