public void ChangeRequired2()
{
Money moneyFloat = SampleFloat();
decimal originalFloat = moneyFloat.Total;
ChangeAlgorithm algo = new ChangeAlgorithm();
decimal price = 1.7M;
Money tendered = new Money();
tendered.Add(DenominationEnum.TwoEuro, 2);
Money change;
bool result = algo.DetermineChange(moneyFloat, tendered, price, out change);
Assert.IsTrue(result);
Assert.AreEqual(tendered.Total - price, change.Total, "Change total incorrect. Change expected.");
Assert.AreEqual(originalFloat + price, moneyFloat.Total, "Float incorrect.");
Assert.AreEqual(1, change[DenominationEnum.TenCents].NumberOfCoins, "Incorrect change. 10 cents.");
Assert.AreEqual(1, change[DenominationEnum.TwentyCents].NumberOfCoins, "Incorrect change. 20 cents.");
Assert.AreEqual(0, change[DenominationEnum.FiftyCents].NumberOfCoins, "Incorrect change. 50 cents.");
Assert.AreEqual(0, change[DenominationEnum.OneEuro].NumberOfCoins, "Incorrect change. 1 Euro.");
Assert.AreEqual(1, change[DenominationEnum.TwoEuro].NumberOfCoins, "Incorrect change. 2 Euro.");
Assert.AreEqual(99, moneyFloat[DenominationEnum.TenCents].NumberOfCoins, "Incorrect float. 10 cents.");
Assert.AreEqual(99, moneyFloat[DenominationEnum.TwentyCents].NumberOfCoins, "Incorrect float. 20 cents.");
Assert.AreEqual(100, moneyFloat[DenominationEnum.FiftyCents].NumberOfCoins, "Incorrect float. 50 cents.");
Assert.AreEqual(100, moneyFloat[DenominationEnum.OneEuro].NumberOfCoins, "Incorrect float. 1 Euro.");
Assert.AreEqual(101, moneyFloat[DenominationEnum.TwoEuro].NumberOfCoins, "Incorrect float. 2 Euro.");
}
public void CannotGiveChange_FloatNotEmpty()
{
Money moneyFloat = new Money();
moneyFloat.Add(DenominationEnum.FiftyCents, 1);
decimal originalFloat = moneyFloat.Total;
ChangeAlgorithm algo = new ChangeAlgorithm();
decimal price = 0.1M;
Money tendered = new Money();
tendered.Add(DenominationEnum.TwentyCents, 1);
Money change;
bool result = algo.DetermineChange(moneyFloat, tendered, price, out change);
Assert.IsFalse(result);
Assert.AreEqual(originalFloat, moneyFloat.Total, "Float incorrect.");
Assert.AreEqual(0, moneyFloat[DenominationEnum.TenCents].NumberOfCoins, "Incorrect float. 10 cents.");
Assert.AreEqual(0, moneyFloat[DenominationEnum.TwentyCents].NumberOfCoins, "Incorrect float. 20 cents.");
Assert.AreEqual(1, moneyFloat[DenominationEnum.FiftyCents].NumberOfCoins, "Incorrect float. 50 cents.");
Assert.AreEqual(0, moneyFloat[DenominationEnum.OneEuro].NumberOfCoins, "Incorrect float. 1 Euro.");
Assert.AreEqual(0, moneyFloat[DenominationEnum.TwoEuro].NumberOfCoins, "Incorrect float. 2 Euro.");
}