def test_find_node_by_id():
node = Node('0001', "String data")
ll = LinkedList(node)
ll.addToList('0002', "String data")
ll.addToList('0003', "String data")
ll.addToList('0004', "String data")
n = ll.findById("0003")
assert n.id == '0003'
def test_remove_node_by_id():
node = Node('0001', "String data")
ll = LinkedList(node)
ll.addToList('0002', "String data")
ll.addToList('0003', "String data")
ll.addToList('0004', "String data")
n = ll.removeNodeById("0004")
assert n == True
assert ll.head.id == "0003"
n = ll.removeNodeById("0005")
assert n == False
def test_add_node_to_list():
node = Node('0001', "String data")
ll = LinkedList(node)
ll.addToList('0002', "String data")
assert ll.head.id == '0002'
assert ll.head.getNext() == node
