// 2
public void testCreateNewLinkListWithObjectList() {
List<Node> nodes = createNewNodes();
SingleLinkedList list = new SingleLinkedList(nodes);
assertEquals(nodes, list.getList());
}
// 1
public void testCreateNewLinkListWithEmptyList() {
List<Node> nodes = new ArrayList<Node>();
SingleLinkedList linkedList = new SingleLinkedList(nodes);
assertTrue(linkedList.getList().isEmpty());
}