public WithdrawalResponse Withdraw(decimal amount, string inputPin)
{
if (amount <= 0)
{
return(new WithdrawalResponse(WithdrawalStatus.Error, ErrorCodes.WithdrawalInvalidAmount));
}
if (!_pinValidationService.IsPinCorrect(Pin, inputPin))
{
// On a more fully fledged implementation I would keep track of pin attempts and block the card if exceeded
return(new WithdrawalResponse(WithdrawalStatus.Error, ErrorCodes.InvalidPin));
}
if (amount <= Balance)
{
lock (_cardLock)
{
if (amount <= Balance)
{
Balance -= amount;
return(new WithdrawalResponse(WithdrawalStatus.Successful));
}
}
}
return(new WithdrawalResponse(WithdrawalStatus.InsufficientFunds));
}
public void Initialise()
{
_pinValidationService = Substitute.For <IPinValidationService>();
_pinValidationService.RequiredPinDigits.Returns(4);
_pinValidationService.GetEncryptedPin(TestPin).Returns(EncryptedPin.EncryptPin(TestPin));
_pinValidationService.IsPinCorrect(Arg.Any <EncryptedPin>(), TestPin).Returns(true);
}