public ATMResponse GetAccountBalance(CustomerAccount account, Int32 pinNumber, out decimal accountBalance)
{
accountBalance = 0;
if (IsPinValid(account, pinNumber))
{
accountBalance = account.GetBalance();
return ATMResponse.SUCCESS;
}
return ATMResponse.ACCOUNT_ERR;
}
public void ATMMachine_IfWitdrawalIsMoreThanATMHolds_ShouldReturnExpectedErrorCode(decimal openingBalance, Int32 accountNumber)
{
ATMMachine cashpoint = new ATMMachine(openingBalance);
CustomerAccount customerAccount = new CustomerAccount(100m, accountNumber, 1234, 100);
var amountToWithdraw = openingBalance + 1;
decimal customerBalance;
ATMResponse result = cashpoint.WithdrawFunds(amountToWithdraw, customerAccount, 1234, out customerBalance);
Assert.That(result, Is.EqualTo(ATMResponse.ATM_ERR));
//also check that the opening balance is still the same ie no money has been removed
Assert.That(cashpoint.MachineBalance, Is.EqualTo(openingBalance));
}
public void ATMMachine_WhenPinNumberIncorrect_ShouldReturndExpectedAccountErrorCode(decimal machineBalance,
Int32 accountNumber,
decimal accountBalance,
decimal overDraft,
Int32 realPinNumber,
Int32 testPinNumber)
{
var cashPoint = new ATMMachine(machineBalance);
var account = new CustomerAccount(accountBalance, accountNumber, realPinNumber, overDraft);
decimal actualBalance;
ATMResponse result = cashPoint.GetAccountBalance(account, testPinNumber, out actualBalance);
Assert.That(result, Is.EqualTo(ATMResponse.ACCOUNT_ERR));
}
public void ATMMachine_WhenUserTriesToWithdrawMoreThantheirAccountTotal_ReturnsFundsError(decimal machineBalance,
Int32 accountNumber,
decimal initialAccountBalance,
decimal overDraft,
Int32 pinNumber)
{
var cashPoint = new ATMMachine(machineBalance);
var account = new CustomerAccount(initialAccountBalance, accountNumber, pinNumber, overDraft);
decimal excessiveWithdrawalAmount = initialAccountBalance + overDraft + 1;
decimal customerBalance;
ATMResponse result = cashPoint.WithdrawFunds(excessiveWithdrawalAmount, account, pinNumber, out customerBalance);
Assert.That(result, Is.EqualTo(ATMResponse.FUNDS_ERR));
Assert.That(account.GetWithdrawalBalance(), Is.EqualTo(initialAccountBalance + overDraft));
}
public ATMResponse WithdrawFunds(decimal withdrawalAmount, CustomerAccount account, Int32 pinNumber, out decimal accountBalance)
{
accountBalance = 0;
if (!IsPinValid(account, pinNumber))
return ATMResponse.ACCOUNT_ERR;
// check if the cashmachine has enough cash for the withdrawal request
if (withdrawalAmount > _machineBalance)
return ATMResponse.ATM_ERR;
if (withdrawalAmount <= account.GetWithdrawalBalance())
{
account.WithdrawFunds(withdrawalAmount);
accountBalance = account.GetBalance();
}
else
{
return ATMResponse.FUNDS_ERR;
}
return ATMResponse.SUCCESS;
}
public void ATMMachine_TestData_ProducesExpectedOutcome(Int32 accountNumber,
decimal initialAccountBalance,
decimal overDraft,
Int32 pinNumber,
decimal withdrawalAmount)
{
var cashPoint = new ATMMachine(8000m);
var customerAccount = new CustomerAccount(initialAccountBalance, accountNumber, pinNumber, overDraft);
decimal customerBalance;
ATMResponse balanceResponse = cashPoint.GetAccountBalance(customerAccount, pinNumber, out customerBalance);
Assert.That(customerBalance, Is.EqualTo(initialAccountBalance));
Console.WriteLine(string.Format("InitialBalance: {0}", customerBalance));
Console.WriteLine(String.Format("ResultCode {0}", balanceResponse));
ATMResponse withdrawalResponse = cashPoint.WithdrawFunds(withdrawalAmount, customerAccount, pinNumber,out customerBalance);
Console.WriteLine(String.Format("Withdrawawl Amount: {0}", withdrawalAmount));
Console.WriteLine(String.Format("Balance AfterWithdrawal {0}", customerBalance));
Console.WriteLine(String.Format("ResultCode: {0}", withdrawalResponse));
}
private bool IsPinValid(CustomerAccount account, int pinNumber)
{
return account.IsValid(pinNumber);
}