def test_search(self):
dll = DLL()
# Test an empty Linked List
assert dll.search(5) == 'Linked List is empty.'
# Test Linked List with some nodes
dll.addNode(1)
dll.addNode(2)
dll.addNode(3)
assert dll.search('python') == False
assert dll.search(3) == True
def test_size(self):
dll = DLL()
size = dll.size()
# Test an empty Linked List
assert size == 0
# Test Linked List with some nodes
dll.addNode(1)
dll.addNode(2)
dll.addNode(3)
size = dll.size()
assert size == 3
def test_addNode(self):
dll = DLL()
dll.head
dll.addNode(1)
assert str(dll.head) == 'DLLNode object: data=1'
assert dll.head.previous == None
assert dll.head.next == None
dll.addNode(2)
assert str(dll.head) == 'DLLNode object: data=2'
assert dll.head.previous == None
assert str(dll.head.next) == 'DLLNode object: data=1'
assert dll.size() == 2
assert dll.head.next.next == None
def test_remove(self):
dll = DLL()
# Test an empty Linked List
assert str(
dll.remove(5)) == 'Linked List is empty. No Nodes to remove.'
# Test Linked List with some nodes
dll.addNode(1)
dll.addNode(2)
assert str(dll.remove(24)) == 'A Node with given data is not present.'
assert dll.search(2) == True
dll.remove(2)
assert dll.search(2) == False
dll.addNode(3)
assert dll.size() == 2
assert str(dll.head) == 'DLLNode object: data=3'
dll.remove(3)
assert str(dll.head) == 'DLLNode object: data=1'
