public void TestAddWithdrawalSingleItem()
{
decimal value = 15.00M;
accountModel.AddWithdrawal(value);
Assert.AreEqual(1, accountModel.Withdrawals.Count);
Assert.AreEqual(value, accountModel.Withdrawals[0].Item1);
Assert.AreEqual(0, accountModel.Withdrawals[0].Item2);
Assert.AreEqual(1, events.Count);
Assert.AreEqual("TotalWithdrawals", events[0]);
}