public void TestDieSetRollDiceIndividually()
{
// create dice and set
Die d1 = new Die();
Die d2 = new Die();
Die d3 = new Die();
DiceSet set = new DiceSet();
set.Add(d1);
set.Add(d2);
set.Add(d3);
// roll dice individually
d1.Roll();
d2.Roll();
d3.Roll();
// add rolls of dice
int total = d1.RollResult + d2.RollResult + d3.RollResult;
// test that the set roll matches the individual dice
Assert.AreEqual<int>(total, set.RollResult, "Dieset roll does not match total value of individually rolled dice.");
}