public void DepositShouldSaveOperationName()
{
decimal depositAmount = 10;
string operationName = "First Operation";
_banker.Deposit(_myAccount, depositAmount, operationName);
List <Operation> operations = _banker.GetOperations(_myAccount);
Assert.AreEqual(1, operations.Count);
Assert.AreEqual(operationName, operations.FirstOrDefault().Name);
}