public static void RandomTests(
     [Random(0, 100, 10)] int n1,
     [Random(0, 100, 10)] int n2,
     [Random(0, 100, 10)] int n3
     )
 {
     Assert.AreEqual(Solution(n1, n2, n3), GrasshopperGradeBook.GetGrade(n1, n2, n3), String.Format("Should work for {0}, {1}, {2}", n1, n2, n3));
 }
 public static char SpecialTests(int n1, int n2, int n3)
 {
     return(GrasshopperGradeBook.GetGrade(n1, n2, n3));
 }