public void testSort(int size) {
List<Integer> src = makeRandomNumberList(size);
SinglyLinkedList l = new SinglyLinkedList();
copy(src, l);
Collections.sort(src);
l.sort();
ListIterator it = src.listIterator(src.size());
while (it.hasPrevious()) assertEquals(it.previous(), l.pop_back());
}
