public void Pass_Through_Variable_Discounts()
{
// arrange
Mock <IDiscountHelper> mock = new Mock <IDiscountHelper>();
mock.Setup(m => m.ApplyDiscount(It.IsAny <decimal>()))
.Returns <decimal>(total => total);
mock.Setup(m => m.ApplyDiscount(It.Is <decimal>(v => v == 0)))
.Throws <ArgumentOutOfRangeException>();
mock.Setup(m => m.ApplyDiscount(It.Is <decimal>(v => v > 100)))
.Returns <decimal>(total => (total * 0.9M));
mock.Setup(m => m.ApplyDiscount(It.IsInRange <decimal>(10, 100, Range.Inclusive)))
.Returns <decimal>(total => total - 5);
var target = new LinqValueCaculatorDiscount(mock.Object);
// act
decimal FiveDollarDiscount = target.ValueProducts(createProduct(5));
decimal TenDollarDiscount = target.ValueProducts(createProduct(10));
decimal FiftyDollarDiscount = target.ValueProducts(createProduct(50));
decimal HundredDollarDiscount = target.ValueProducts(createProduct(100));
decimal FiveHundredDollarDiscount = target.ValueProducts(createProduct(500));
// assert
Assert.AreEqual(5, FiveDollarDiscount, "$5 Fail");
Assert.AreEqual(5, TenDollarDiscount, "$10 Fail");
Assert.AreEqual(45, FiftyDollarDiscount, "$50 Fail");
Assert.AreEqual(95, HundredDollarDiscount, "$100 Fail");
Assert.AreEqual(450, FiveHundredDollarDiscount, "$500 Fail");
target.ValueProducts(createProduct(0));
}
public void Sum_Products_Correctly()
{
// arrange
//var discounter = new MinimumDiscountHelper();
//var target = new LinqValueCaculatorDiscount(discounter);
//var goalTotal = products.Sum(e => e.Price);
Mock <IDiscountHelper> mock = new Mock <IDiscountHelper>();
mock.Setup(m => m.ApplyDiscount(It.IsAny <decimal>()))
.Returns <decimal>(total => total);
var target = new LinqValueCaculatorDiscount(mock.Object);
// act
var result = target.ValueProducts(products);
// assert
Assert.AreEqual(products.Sum(e => e.Price), result);
}
