public void TestProductDiscountWithNullDiscount()
{
ProductId prodOneId = new ProductId("1");
Product prodOne = new Product(prodOneId, 10m);
decimal discountedPrice = prodOne.DiscountPrice(null);
Assert.IsTrue(discountedPrice == 10m);
}
public void TestProductDiscountWithValidDiscountByDate()
{
ProductId prodOneId = new ProductId("1");
Product prodOne = new Product(prodOneId, 10m);
DiscountByDate discount = new DiscountByDate(.1m, DateTime.Now.AddDays(1));
decimal discountedPrice = prodOne.DiscountPrice(discount);
Assert.IsTrue(discountedPrice == 9m);
}
public void TestProductDiscountWithInvalidDiscount()
{
ProductId prodOneId = new ProductId("1");
Product prodOne = new Product(prodOneId, 10m);
string notADiscount = "bad discount";
decimal discountedPrice = prodOne.DiscountPrice(notADiscount);
Assert.IsTrue(discountedPrice == 10m);
}