public void Subset_Smoke_Test()
{
var input = "".ToCharArray().ToList();
var subsets = Subset.Find <char>(input);
Assert.AreEqual(Math.Pow(2, input.Count), subsets.Count);
input = "cookie".ToCharArray().ToList();
subsets = Subset.Find <char>(input);
Assert.AreEqual(Math.Pow(2, input.Count), subsets.Count);
input = "monster".ToCharArray().ToList();
subsets = Subset.Find <char>(input);
Assert.AreEqual(Math.Pow(2, input.Count), subsets.Count);
}