public void NextBiggerThanTests_WithIncorrentI_ThrowArgumentException() => Assert.Throws <ArgumentException>(() => NumbersOperations.NextBiggerThan(-1));
public int?NextBiggerThanTests(int number) => NumbersOperations.NextBiggerThan(number);
public void NextBiggerThanTests_WithIncorrentI_ThrowArgumentException() => Assert.Throws <ArgumentException>(() => NumbersOperations.NextBiggerThan(-1));
public int?NextBiggerThanTests(int number) => NumbersOperations.NextBiggerThan(number);