public void DiceRollsAreComparable() { var r1 = new DiceRoll(2); var r2 = new DiceRoll(3); var r3 = new DiceRoll(3); Assert.That(r1.CompareTo(r2), Is.LessThan(0)); Assert.That(r2.CompareTo(r1), Is.GreaterThan(0)); Assert.That(r2.CompareTo(r3), Is.EqualTo(0)); }