public void AddDoubleLinkedListByFirstIndexTest(int[] array, int[] insertArray, int[] expectedArray)
{
DoubleLinkedList actual = new DoubleLinkedList(array);
DoubleLinkedList expected = new DoubleLinkedList(expectedArray);
DoubleLinkedList insert = new DoubleLinkedList(insertArray);
actual.AddDoubleLinkedListByFirstIndex(insert);
Assert.AreEqual(expected, actual);
}
