public void BankAccountCommand_Withdraw_Twice_Undo_Once()
{
var cashToDeposit = 100;
var account = new BankAccount();
var bankCommand = new BankAccountCommand(account, TransactionType.WITHDRAW, cashToDeposit);
var expectedBankBalance = account.Amount - cashToDeposit;
bankCommand.Execute();
bankCommand.Execute();
bankCommand.Undo();
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_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_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 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);
}