public void Deposit(BankAccount account, decimal amount, string description)
{
if (!_transactions.ContainsKey(account.AccountNumber))
{
_transactions.Add(account.AccountNumber, new List<Transaction>());
}
var transaction = new Transaction { AccountNumber = account.AccountNumber, Amount = amount, Description = description };
_transactions[account.AccountNumber].Add(transaction);
}
public void Withdraw(BankAccount account, decimal amount, string description)
{
if (!_transactions.ContainsKey(account.AccountNumber))
{
_transactions.Add(account.AccountNumber, new List<Transaction>());
}
if (Balance(account) < amount)
{
throw new InsufficientFundsException(account.AccountNumber, amount);
}
var transaction = new Transaction { AccountNumber = account.AccountNumber, Amount = -amount, Description = description };
_transactions[account.AccountNumber].Add(transaction);
}