public void AddToCartDoesNotDuplicateCartItems()
{
//Arrange
var cart = new ShoppingCart();
//Act
cart.ClearCart();
cart.AddDrink(PricyDrink);
cart.AddDrink(PricyDrink);
//Assert
Assert.AreEqual(cart.GetItems().Count(), 1);
Assert.AreEqual(cart.GetItems().Select(i => i.Quantity).Sum(), 2);
}
public void CheckTotal()
{
//Arrange
var cart = new ShoppingCart();
decimal total = 12.1M;
//Act
cart.ClearCart();
cart.AddDrink(PricyDrink);
cart.AddDrink(CheapDrink);
cart.AddDrink(CheapDrink);
//Assert
Assert.AreEqual(cart.Total, total);
}
public void TestAllowedPayment_IncludesCash()
{
//Arrange
var cart = new ShoppingCart();
//Act
cart.ClearCart();
cart.AddDrink(CheapDrink);
//Assert
Assert.IsTrue(cart.GetAllowedPayments().Contains(PaymentType.Cash));
Assert.IsTrue(cart.GetAllowedPayments().Contains(PaymentType.CreditCard));
}
public void TestAllowedPayment_OnlyCC()
{
//Arrange
var cart = new ShoppingCart();
//Act
cart.ClearCart();
cart.AddDrink(PricyDrink);
//Assert
Assert.IsFalse(cart.GetAllowedPayments().Contains(PaymentType.Cash));
Assert.IsTrue(cart.GetAllowedPayments().Contains(PaymentType.CreditCard));
}
public void DiscountALLFREEApplyed()
{
//Arrange
var cart = new ShoppingCart();
var total = 0M;
//Act
cart.ClearCart();
cart.AddDrink(PricyDrink);
cart.ApplyDiscount(DiscountCodes.ALLFREE);
//Assert
Assert.AreEqual(cart.Total, total);
Assert.AreEqual(cart.Discount, 1M);
}
public void Discount50Applyed()
{
//Arrange
var cart = new ShoppingCart();
var total = 10.1M * (1 - 0.5M);
//Act
cart.ClearCart();
cart.AddDrink(PricyDrink);
cart.ApplyDiscount(DiscountCodes.DISCOUNT50);
//Assert
Assert.AreEqual(cart.Total, total);
Assert.AreEqual(cart.Discount, 0.5M);
}