public void FindNexFindNextBiggerNumber_NegativeNumber_ArgumentException()
 {
     Assert.Throws <ArgumentException>(() => DataManipulator.FindNextBiggerNumber(-7));
 }
 public int FindNexFindNextBiggerNumber_VariousInput_Calculated(int number)
 {
     return(DataManipulator.FindNextBiggerNumber(number));
 }