def test_remove_head_node_length1():
my_linked_list = LinkedList()
my_linked_list.append_node(0)
my_linked_list.remove_head_node()
assert my_linked_list.get_node_count() == 0
assert my_linked_list.get_head_node() is None
assert my_linked_list.get_value_at_position(0) is None
def test_remove_duplicate_values_length1():
my_linked_list = LinkedList()
my_linked_list.append_node(0)
my_linked_list.remove_duplicate_values()
assert my_linked_list.get_node_count() == 1
assert my_linked_list.get_head_node().value == 0
assert my_linked_list.get_value_at_position(0) == 0
def test_single_node():
my_linked_list = LinkedList()
my_linked_list.append_node(0)
assert my_linked_list.get_node_count() == 1
assert my_linked_list.get_head_node().value == 0
assert my_linked_list.get_value_at_position(0) == 0
assert my_linked_list.get_value_at_position(1) is None
assert my_linked_list.get_value_at_position(1) is None
def test_compare_lists_length1():
linked_list_1 = LinkedList()
linked_list_1.append_node(0)
linked_list_2 = LinkedList()
linked_list_2.append_node(0)
assert linked_list_1.compare_to(linked_list_2)
linked_list_2.set_value_at_position(1, 0)
assert not linked_list_1.compare_to(linked_list_2)
def test_remove_all_nodes_with_value_length2():
my_linked_list = LinkedList()
my_linked_list.append_nodes([0, 1])
my_linked_list.remove_all_nodes_with_value(1)
assert my_linked_list.get_node_count() == 1
assert my_linked_list.get_head_node().value == 0
my_linked_list.append_node(1)
my_linked_list.remove_all_nodes_with_value(0)
assert my_linked_list.get_node_count() == 1
assert my_linked_list.get_head_node().value == 1
assert my_linked_list.get_value_at_position(2) is None