public void FindNextBiggerNumber_NonPositiveValue(int number)
 => Assert.Throws <ArgumentException>(() => NumberSearcher.FindNextBiggerNumber(number));
 public void FindNextBiggerNumber_TooBigValue(int number)
 => Assert.Throws <OverflowException>(() => NumberSearcher.FindNextBiggerNumber(number));
        public int FindNextBiggerNumber_IsCorrect(int number)
        {
            int result = NumberSearcher.FindNextBiggerNumber(number);

            return(result);
        }