/// <summary>
/// Processing payment events from the coin receiver
/// </summary>
/// <param name="cmd">The event to process.</param>
/// <param name="payment">The coin received or null</param>
void PaymentAction(PaymentCmdEvent cmd, INotionValue payment)
{
if (VendingMachineState != VendingMachineState.Payment)
{
return;
}
if (cmd == PaymentCmdEvent.Cancel)
{
// Cancellation of the order or/and payment
CancelOrder();
}
else if (cmd == PaymentCmdEvent.Payment)
{
_paymentWalletRepository.AddToWallet(payment, 1);
Money total = _orderedProducts.Aggregate(Money.Zero, (m, p) => m + p.Price);
Money paid = _paymentWalletRepository.WalletList.Aggregate(Money.Zero, (m, p) => m + new Money(0, (int)p.Item1.Nominal * p.Item2));
string msg = String.Format(_vendingMessageRepository.GetMessage(MessageCode.BalancePayment), total, paid);
_displayPanel.DisplayMessage(msg);
if (paid >= total)
{
// give change or cancel
if (paid > total)
{
Money change = paid - total;
PaymentWalletRepository collectedChange = ChangeComposer(_walletRepository, change);
if (collectedChange == null)
{
DisplayMessageByCode(MessageCode.RunOutOfChange);
CancelOrder();
return;
}
foreach (var pm in collectedChange.WalletList)
{
msg = String.Format(_vendingMessageRepository.GetMessage(MessageCode.GivenChange), pm.Item1.MoneyValue, pm.Item2);
_displayPanel.DisplayMessage(msg);
}
}
// complete purchase
foreach (var p in _orderedProducts)
{
msg = String.Format(_vendingMessageRepository.GetMessage(MessageCode.CollectYourPurchase), p);
_saleRecord.Sold(p);
_displayPanel.DisplayMessage(msg);
}
_orderedProducts.Clear();
foreach (var pm in _paymentWalletRepository.WalletList)
{
_walletRepository.AddToWallet(pm.Item1, pm.Item2);
}
_paymentWalletRepository.ClearMoney();
// switch back to selling
TryToStartSelling();
_coinReceiver.Off();
}
}
}
public int RemoveFromWallet(INotionValue notion, int number)
{
if (notion == null)
{
throw new ArgumentNullException(nameof(notion));
}
if (!Repository.ContainsKey(notion))
{
throw new InvalidDataException(nameof(notion));
}
if (number < 0 || number > Repository[notion])
{
throw new InvalidDataException(nameof(number));
}
return(Repository[notion] -= number);
}
public void TestPayment()
{
// setup the tested class instance and dependencies with the test case initialization.
var mockDisplayPanel = new MockDisplayPanel();
var mockReadKeypadInput = new MockReadKeypadInput();
var mockVendingMessageRepository = new MockVendingMessageRepository();
var paymentPanel = new PaymentReceiver(mockDisplayPanel, mockReadKeypadInput, mockVendingMessageRepository);
PaymentCmdEvent cmd = PaymentCmdEvent.Cancel;
INotionValue objCoin = null;
// !!! define the simulation key pad command of payment
var firstCoin = paymentPanel.MapToCoins.First();
mockReadKeypadInput.SimInputAs = firstCoin.Key;
// !! define the action test listener
paymentPanel.CoinAction += (c, p) =>
{
cmd = c;
objCoin = p;
// off after getting the event
paymentPanel.Off();
};
bool exception = false;
paymentPanel.FailtException += ex => exception = true;
// Test subject Action - on payment receiver and get simulated payment
paymentPanel.On();
Thread.Sleep(10000);
// verify - payment
Assert.False(exception);
Assert.Equal(PaymentCmdEvent.Payment, cmd);
Assert.Equal(firstCoin.Value, objCoin);
// verify the message flow
List <MessageCode> TestCatchedCodes = new List <MessageCode>
{
MessageCode.MakeYourPayment,
MessageCode.Ok
};
Assert.Equal((IEnumerable <MessageCode>)TestCatchedCodes, (IEnumerable <MessageCode>)mockVendingMessageRepository.CatchedCodes);
Assert.Equal((IEnumerable <string>)mockVendingMessageRepository.ReturnList, (IEnumerable <string>)mockDisplayPanel.DisplayList);
}
public int AddToWallet(INotionValue notion, int number)
{
if (notion == null)
{
throw new ArgumentNullException(nameof(notion));
}
if (number < 0)
{
throw new InvalidDataException(nameof(number));
}
if (Repository.ContainsKey(notion))
{
Repository[notion] += number;
}
else
{
Repository[notion] = number;
}
return(Repository[notion]);
}
public void InvokeCoinAction(PaymentCmdEvent cmd, INotionValue obj)
{
CoinAction?.Invoke(cmd, obj);
}