public bool SendOrderMailToOrderTeam(OrederInfo orderDetails)
{
var result = false;
MailAddress to = new MailAddress(ConfigurationManager.AppSettings["OrderTeamEmailId"]);
MailMessage msg = new MailMessage(_from, to);
var messageBuilder = new StringBuilder();
messageBuilder.AppendLine("New Order Detail");
messageBuilder.AppendLine("User Details:");
messageBuilder.AppendLine($"User Id : {orderDetails.User.UserId}, Name : {orderDetails.User.Name}");
messageBuilder.AppendLine("Product Details:");
messageBuilder.AppendLine($"Product Id : {orderDetails.ProductId}, Quantity : {orderDetails.Quantity}");
messageBuilder.AppendLine($"Delivery Address: {orderDetails.User.DeliveryAddress}");
msg.Body = messageBuilder.ToString();
msg.Subject = "New Order Details";
try
{
_mailClient.Send(msg);
result = true;
}
catch (Exception)
{
}
return(result);
}
public void Send_Order_Mail_Is_Tried_Thrice_And_Payment_IS_Reverted_With_Error_Message()
{
var ErrorMessageKey = "Order_Failed";
var mailSendingAttempt = 0;
var orderDetails = new OrederInfo();
var expectedCreditCardNo = "Some Credit Card No";
var unitProductPrice = 100;
orderDetails.CreditCardNo = expectedCreditCardNo;
orderDetails.Quantity = 5;
decimal expectedAmountToRevert = 500;
string passedCardNoToRevert = string.Empty;
decimal passedAmountToRevert = 0;
_inventoryHelper.Setup(x => x.CheckInventory(It.IsAny <string>(), It.IsAny <int>())).Returns(true);
_inventoryHelper.Setup(x => x.GetProcuctPrice(It.IsAny <string>())).Returns(unitProductPrice);
_creditCardHelper.Setup(x => x.ValidateCreditCard(It.IsAny <string>())).Returns(true);
_paymentServiceHelper.Setup(x => x.ChargePayment(It.IsAny <string>(), It.IsAny <decimal>())).Returns(true);
_paymentServiceHelper.Setup(x => x.RevertPayment(It.IsAny <string>(), It.IsAny <decimal>())).Callback <string, decimal>((x, y) => { passedCardNoToRevert = x; passedAmountToRevert = y; });
_mailsHelper.Setup(x => x.SendOrderMailToOrderTeam(It.IsAny <OrederInfo>())).Callback(() => mailSendingAttempt++).Returns(false);
var result = _orderProcessor.ProcessOrder(orderDetails).Result;
Assert.AreEqual(mailSendingAttempt, 3);
Assert.AreEqual(expectedCreditCardNo, passedCardNoToRevert);
Assert.AreEqual(expectedAmountToRevert, passedAmountToRevert);
Assert.IsFalse(result.Result);
Assert.IsTrue(result.ErrorMessage.ContainsKey(ErrorMessageKey));
Assert.AreEqual(result.ErrorMessage[ErrorMessageKey], "Unable to Process Order, Please try again later");
}
public Task <OrderProcessingResult> ProcessOrder(OrederInfo orderDetails)
{
var result = new OrderProcessingResult();
//check availability
var isAvailable = _helperFactory.GetInventoryHelper().CheckInventory(orderDetails.ProductId, orderDetails.Quantity);
//validate credit card
if (isAvailable)
{
var isCreditCardValid = _helperFactory.GetCreditCardHelper().ValidateCreditCard(orderDetails.CreditCardNo);
if (isCreditCardValid)
{
decimal unitPrice = _helperFactory.GetInventoryHelper().GetProcuctPrice(orderDetails.ProductId);
decimal amountToCharge = unitPrice * orderDetails.Quantity;
//deduct payment
bool isPaymentSucceeded = _helperFactory.GetPaymentHelper().ChargePayment(orderDetails.CreditCardNo, amountToCharge);
if (isPaymentSucceeded)
{
//Send Email
var mailAttempt = 1;
var isMailSent = false;
while (!isMailSent && mailAttempt++ <= 3)
{
isMailSent = _helperFactory.GetMailHelper().SendOrderMailToOrderTeam(orderDetails);
}
if (!isMailSent)
{
//ideally should be retried to revert payment.
_helperFactory.GetPaymentHelper().RevertPayment(orderDetails.CreditCardNo, amountToCharge);
result.ErrorMessage.Add("Order_Failed", "Unable to Process Order, Please try again later");
}
else
{
result.Result = true;
}
}
else
{
result.ErrorMessage.Add("Payment_Failed", "Payment Failed on credit card");
}
}
else
{
result.ErrorMessage.Add("Credit_Card_Not_Valid", "Credit card is not valid");
}
}
else
{
result.ErrorMessage.Add("Err_Not_Enough_Inventory", "Required Inventory Not Available");
}
return(Task.FromResult(result));
}
public void When_Mail_Is_Sent_ProcessOrder_Returns_True_And_No_Error_Message()
{
var orderDetails = new OrederInfo();
_inventoryHelper.Setup(x => x.CheckInventory(It.IsAny <string>(), It.IsAny <int>())).Returns(true);
_creditCardHelper.Setup(x => x.ValidateCreditCard(It.IsAny <string>())).Returns(true);
_paymentServiceHelper.Setup(x => x.ChargePayment(It.IsAny <string>(), It.IsAny <decimal>())).Returns(true);
_paymentServiceHelper.Setup(x => x.RevertPayment(It.IsAny <string>(), It.IsAny <decimal>()));
_mailsHelper.Setup(x => x.SendOrderMailToOrderTeam(It.IsAny <OrederInfo>())).Returns(true);
var result = _orderProcessor.ProcessOrder(orderDetails).Result;
Assert.IsTrue(result.Result);
Assert.AreEqual(0, result.ErrorMessage.Count);
}