public void Run(string[] args)
{
var ba = new BankAccount();
var cmdDeposit = new BankAccountCommand(ba,
BankAccountCommand.Action.Deposit, 100);
var cmdWithdraw = new BankAccountCommand(ba,
BankAccountCommand.Action.Withdraw, 1000);
cmdDeposit.Call();
cmdWithdraw.Call();
Console.WriteLine(ba);
cmdWithdraw.Undo();
cmdDeposit.Undo();
Console.WriteLine(ba);
var from = new BankAccount();
from.Deposit(100);
var to = new BankAccount();
var mtc = new MoneyTransferCommand(from, to, 1000);
mtc.Call();
// Deposited $100, balance is now 100
// balance: 100
// balance: 0
Console.WriteLine(from);
Console.WriteLine(to);
}
public void BankAccountCommand_Withdraw()
{
var cashToWithdraw = 100;
var account = new BankAccount();
var bankCommand = new BankAccountCommand(account, TransactionType.WITHDRAW, cashToWithdraw);
var expectedBankBalance = account.Amount - cashToWithdraw;
bankCommand.Execute();
Assert.Equal(expectedBankBalance, account.Amount);
}
public void BankAccountCommand_Deposit()
{
var cashToDeposit = 100;
var account = new BankAccount();
var bankCommand = new BankAccountCommand(account, TransactionType.DEPOSIT, cashToDeposit);
var expectedBankBalance = account.Amount + cashToDeposit;
bankCommand.Execute();
Assert.Equal(expectedBankBalance, account.Amount);
}
public void BankAccountCommand_Undo(TransactionType transactionType)
{
var cashToWithdraw = 100;
var account = new BankAccount();
var bankCommand = new BankAccountCommand(account, transactionType, cashToWithdraw);
var expectedBankBalance = account.Amount;
bankCommand.Execute();
bankCommand.Undo();
Assert.Equal(expectedBankBalance, account.Amount);
}
public void WithdrawMoneyOnYourBankAccount(string id, double amount)
{
if (IsItYourAccount(id))
{
throw new YourBankAccountException();
}
var account = FindAccount(id);
var command = new BankAccountCommand(account, BankAccountCommand.Action.Withdraw, amount);
account.UpdateAccountHistory(command);
command.Call();
}
public void BankAccountCommand_Withdraw_Once_Undo_Twice()
{
var cashToDeposit = 100;
var account = new BankAccount();
var bankCommand = new BankAccountCommand(account, TransactionType.WITHDRAW, cashToDeposit);
var expectedBankBalance = account.Amount;
bankCommand.Execute();
bankCommand.Undo();
bankCommand.Undo();
Assert.Equal(expectedBankBalance, account.Amount);
}
public void TestCompositeCommand()
{
var ba = new BankAccount();
var deposit = new BankAccountCommand(ba, BankAccountCommand.Action.Deposit, 100);
var withdraw = new BankAccountCommand(ba, BankAccountCommand.Action.WithDraw, 50);
var composite = new CompositeBankAccountCommand(new[] { deposit, withdraw });
composite.Call();
Console.WriteLine(ba);
composite.Undo();
Console.WriteLine(ba);
}
public void BankAccountCommand_Undo_Many_Transactions()
{
var cashToDeposit = 100;
var cashToWithdraw = 50;
var account = new BankAccount();
var depositCommand = new BankAccountCommand(account, TransactionType.DEPOSIT, cashToDeposit);
var withdrawCommand = new BankAccountCommand(account, TransactionType.WITHDRAW, cashToWithdraw);
var expectedBankBalance = account.Amount;
depositCommand.Execute();
withdrawCommand.Execute();
depositCommand.Undo();
withdrawCommand.Undo();
Assert.Equal(expectedBankBalance, account.Amount);
}
public override void Call()
{
BankAccountCommand last = null;
foreach (var cmd in this)
{
if (last == null || last.Success)
{
cmd.Call();
last = cmd;
}
else
{
cmd.Undo();
break;
}
}
}
public override void Call()
{
BankAccountCommand last = null;
foreach (var cmd in this)
{
if (last == null || last.Success)
{
cmd.Call();
last = cmd;
}
else
{
cmd.Undo();
break; // We dont perform any additional commands
}
}
}
