def test_remove_back(): list = DoubleLinkedList() list.addFront('Last').addFront('First') assert list.removeBack() == "Last" assert list.front() == "First" assert list.back() == "First" assert list.removeBack() == "First" assert list.isEmpty()
def test_copy(): list = DoubleLinkedList() list.addFront(1).addFront(2).addFront(3) copy = list.copy() assert not copy == list assert list.front() == 3 assert copy.front() == 3 assert copy.removeBack() == 1 assert copy.back() == 2 assert list.back() == 1
def test_multiple_elements(): list = DoubleLinkedList() list.addFront(1).addBack(2) assert list.front() == 1 assert list.back() == 2
def test_get_back_node(): list = DoubleLinkedList() assert list.back() is None list.addFront(1) assert list.back() == 1
def test_add_element_to_back(): list = DoubleLinkedList() list.addBack(1) assert not list.isEmpty() list.addBack(2).addBack(3) assert list.back() == 3
def test_get_back_node(): list = DoubleLinkedList() list.addFront("Second") assert list.back() == "Second" list.addFront("First") assert list.back() == "Second"
def test_multiple_items_added_to_front(): list = DoubleLinkedList() list.addFront('Last').addFront('First') assert list.front() == 'First' assert list.back() == 'Last'