private void Test_Add_ChainAdd()
{
var a = new Modifier(); //0, 0
var b = new Modifier(2); //2, 2
var c = new Modifier(always1, rolld4, 1); //2, 3
var d = new Modifier(always1, new List <RollType>()
{
RollType.d12, RollType.d12
}, 3); //5, 7
var e = new Modifier(always1, new List <RollType>()
{
RollType.d20, RollType.d20, RollType.d20
}, 2); //5, 8
IModifier res = null;
Assert.DoesNotThrow(() => res = a.Add(b));
Assert.DoesNotThrow(() => res = res.Add(c));
Assert.DoesNotThrow(() => res = res.Add(d));
Assert.DoesNotThrow(() => res = res.Add(e));
Assert.IsNotNull(res);
Assert.AreEqual(14, res.Get()); //0+2+2+5+5 = 14
Assert.AreEqual(20, res.GetCrit()); //0+2+3+7+8 = 20
}