public void IntegerFail(params int[] input) => Assert.Null(Evaluation.Predict(input.Select(x => (double)x).ToArray()));
static void Test(System.Collections.Generic.IEnumerable <int> seq) => Assert.Equal(seq.Last(), Assert.IsType <double>(Evaluation.Predict(seq.Select(x => (double)x).SkipLast(1).ToArray())), 12);