public void ShouldHaveAReverseEnumerableForAListWithTwoItem()
        {
            var doubleLinkList = new DoubleLinkList<int>();

            doubleLinkList.Add(5);
            doubleLinkList.Add(7);

            var enumerable = doubleLinkList.GetReverseEnumerable();

            enumerable.ShouldContain(7);
        }