public void AddToTest(int[] array, int idx, int value, int[] expectedArray)
{
DLinkedList actual = new DLinkedList(array);
DLinkedList expected = new DLinkedList(expectedArray);
actual.AddTo(idx, value);
Assert.AreEqual(expected, actual);
}
public void AddToNegativeTest(int[] array, int idx, int value)
{
DLinkedList actual = new DLinkedList(array);
Assert.Throws <IndexOutOfRangeException>(() => actual.AddTo(idx, value));
}