// [TestCase(new int[] { 1, 2, 3, 4, 5 }, 13, 25, new int[] { 1, 2, 3, 4, 5 })]
public void AddAtTest(int[] array, int idx, int val, int[] ex)
{
LinkedListProject.LinkedList lList = new LinkedListProject.LinkedList();
if (idx < 0 || idx > array.Length)
{
Assert.Throws <Exception>(() => lList.AddAt(idx, val));
}
else
{
lList.AddLast(array);
lList.AddAt(idx, val);
int[] actual = lList.ToArray();
Assert.AreEqual(ex, actual);
}
}