public void CheckMergeSortOnNull() => Assert.Throws <ArgumentNullException>(() => SortingMethods.Mergesort(null));
public void CheckMergeSortOnEmpty() => Assert.Throws <ArgumentException>(() => SortingMethods.Mergesort(new int[] { }));
public void MergeSortTest()
{
int[] array = { 24, 16, 54, -4, 3, 47, 93, 101, 255, -34, -2019 };
SortingMethods.Mergesort(array);
Assert.AreEqual(new int[] { -2019, -34, -4, 3, 16, 24, 47, 54, 93, 101, 255 }, array);
}