public void Test_CalculateTotalToPay_Valid()
{
// Arrange
List<ItemDetails> items = new List<ItemDetails>();
items.Add(new ItemDetails { Quantity = 5, Price = 10.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 2, Price = 100.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 10, Price = 15.0m, VAT = 15 });
var orderCalcSvc = new DefaultOrderCalculationService();
decimal serviceCharge = 100.0m;
// Act
var expected = 0.0m;
foreach (var item in items)
{
var total = item.Quantity * item.Price;
var totalPlusVat = total * (1 + item.VAT / 100);
expected += totalPlusVat;
}
expected += serviceCharge;
var actual = orderCalcSvc.CalculateTotalToPay(items, serviceCharge);
// Assert
Assert.AreEqual(expected, actual);
}
public void Test_ProcessOrder_Valid()
{
// Arrange
var orderCalcSvc = new DefaultOrderCalculationService();
var serviceChargeCalcSvc = new DefaultDeliveryServiceChargeCalculationService();
var deliveryOrderProcessor = new DeliveryOrderProcessor(
orderCalcSvc, serviceChargeCalcSvc);
var deliveryOrder = new DeliveryOrder
{
UserId = "this.User",
From = new DefaultAddress { Address = "My Home" },
To = new DefaultAddress { Address = "My Office" },
OrderCart = new OrderDetails
{
PackageList = new List<ItemDetails>()
{
new ItemDetails
{
Item = "Coffee",
Quantity = 2,
Price = 150.0m,
VAT = 15.0m
}
}
},
PaymentMethod = "CashOnDelivery"
};
// Act
deliveryOrderProcessor.ProcessOrder(deliveryOrder);
var coffees = deliveryOrder.OrderCart.PackageList;
var cart = deliveryOrder.OrderCart;
var serviceCharge = serviceChargeCalcSvc.CalculateServiceCharge(coffees);
var subTotal = orderCalcSvc.CalculateSubtotal(coffees);
var totalToPay = orderCalcSvc.CalculateTotalToPay(coffees, serviceCharge);
var totalVATAmount = orderCalcSvc.CalculateTotalVATAmount(coffees, serviceCharge);
var totalWeight = 0;
// Assert
Assert.AreEqual(serviceCharge, cart.ServiceCharge);
Assert.AreEqual(subTotal, cart.SubTotal);
Assert.AreEqual(totalToPay, cart.TotalToPay);
Assert.AreEqual(totalVATAmount, cart.TotalVATAmount);
Assert.AreEqual(totalWeight, cart.TotalWeight);
}
public void Test_CalculateNetTotal_Valid()
{
// Arrange
List<ItemDetails> items = new List<ItemDetails>();
items.Add(new ItemDetails { Quantity = 5, Price = 10.0m });
items.Add(new ItemDetails { Quantity = 2, Price = 100.0m });
items.Add(new ItemDetails { Quantity = 10, Price = 15.0m });
var orderCalcSvc = new DefaultOrderCalculationService();
// Act
var expected = 0.0m;
foreach (var item in items)
{
expected += (item.Price * item.Quantity);
}
var actual = orderCalcSvc.CalculateNetTotal(items);
// Assert
Assert.AreEqual(expected, actual);
}
public void Test_CalculateTotaVATAmount_Valid()
{
// Arrange
List<ItemDetails> items = new List<ItemDetails>();
items.Add(new ItemDetails { Quantity = 5, Price = 10.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 2, Price = 100.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 10, Price = 15.0m, VAT = 15 });
var orderCalcSvc = new DefaultOrderCalculationService();
var subTotal = 0.0m;
var netTotal = 0.0m;
// Act
foreach (var item in items)
{
var total = item.Quantity * item.Price;
var totalPlusVat = total * (1 + item.VAT / 100);
subTotal += totalPlusVat;
netTotal += total;
}
var expected = subTotal - netTotal;
var actual = orderCalcSvc.CalculateTotalVATAmount(items, 10.0m);
// Assert
Assert.AreEqual(expected, actual);
}
public void Test_VerifyAndCalculateTotalVATAmount_Invalid()
{
// Arrange
List<ItemDetails> items = new List<ItemDetails>();
items.Add(new ItemDetails { Quantity = 5, Price = 10.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 2, Price = 100.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 10, Price = 15.0m, VAT = 15 });
var orderCalcSvc = new DefaultOrderCalculationService();
var subTotal = 0.0m;
var netTotal = 0.0m;
// Act
foreach (var item in items)
{
var total = item.Quantity * item.Price;
var totalPlusVat = total * (1 + item.VAT / 100);
subTotal += totalPlusVat;
netTotal += total;
}
var expected = subTotal - netTotal;
var submittedTotalVATAmount = 0.0m;
// Assert
Assert.Throws<OrderCalculationException>(
() => orderCalcSvc.VerifyAndTotalVATAmount(
items, 10.0m, submittedTotalVATAmount));
}
public void Test_VerifyAndCalculateTotalToPay_Invalid()
{
// Arrange
List<ItemDetails> items = new List<ItemDetails>();
items.Add(new ItemDetails { Quantity = 5, Price = 10.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 2, Price = 100.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 10, Price = 15.0m, VAT = 15 });
var orderCalcSvc = new DefaultOrderCalculationService();
var expected = 0.0m;
decimal serviceCharge = 0.0m;
// Act
foreach (var item in items)
{
var total = item.Quantity * item.Price;
var totalPlusVat = total * (1 + item.VAT / 100);
expected += totalPlusVat;
}
expected += serviceCharge;
var submittedTotalToPay = 0.0m;
// Assert
Assert.Throws<OrderCalculationException>(
() => orderCalcSvc.VerifyAndCalculateTotalToPay(
items, serviceCharge, submittedTotalToPay));
}
public void Test_VerifyAndCalculateNetTotal_Invalid()
{
// Arrange
List<ItemDetails> items = new List<ItemDetails>();
items.Add(new ItemDetails { Quantity = 5, Price = 10.0m });
items.Add(new ItemDetails { Quantity = 2, Price = 100.0m });
items.Add(new ItemDetails { Quantity = 10, Price = 15.0m });
var orderCalcSvc = new DefaultOrderCalculationService();
var expected = 0.0m;
// Act
foreach (var item in items)
{
expected += (item.Price * item.Quantity);
}
var submittedNetTotal = 0.0m;
// Assert
Assert.Throws<OrderCalculationException>(
() => orderCalcSvc.VerifyAndCalculateNetTotal(items, submittedNetTotal));
}
public void Test_VerifyAndCalculateSubtotal_Valid()
{
// Arrange
List<ItemDetails> items = new List<ItemDetails>();
items.Add(new ItemDetails { Quantity = 5, Price = 10.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 2, Price = 100.0m, VAT = 15 });
items.Add(new ItemDetails { Quantity = 10, Price = 15.0m, VAT = 15 });
var orderCalcSvc = new DefaultOrderCalculationService();
var expected = 0.0m;
// Act
foreach (var item in items)
{
var total = item.Quantity * item.Price;
var totalPlusVat = total * (1 + item.VAT / 100);
expected += totalPlusVat;
}
var submittedSubTotal = expected;
var actual = orderCalcSvc.VerifyAndCalculateSubtotal(items, submittedSubTotal);
// Assert
Assert.AreEqual(expected, actual);
}