def test_custom_data(self):
class Name:
def __init__(self, name):
self.name = name
def __eq__(self, other):
return self.name == other.name
name = Name('Mike')
n = _node.Node(name)
self.assertEqual(n.data, Name('Mike'))
self.assertIsNone(n.next_node)
self.assertIsNone(n.prev_node)
def test_init(self):
n = _node.Node(0)
self.assertEqual(n.data, 0)
self.assertIsNone(n.next_node)
self.assertIsNone(n.prev_node)
def test_str(self):
n = _node.Node(1)
self.assertEqual(n.__str__(), f'{n.data}')
def test_repr_(self):
a = _node.Node(1)
b = _node.Node(2, a)
self.assertEqual(
b.__repr__(),
f'Node({b.data}, next_node={a.data}, prev_node=None)')
def test_iterable_data(self):
numbers = [1, 2, 3, 4, 5]
n = _node.Node(numbers)
self.assertEqual(n.data, numbers)
self.assertIsNone(n.next_node)
self.assertIsNone(n.prev_node)
def test_references(self):
a = _node.Node(1)
b = _node.Node(2)
c = _node.Node(3, a, b)
self.assertIs(c.next_node, a)
self.assertIs(c.prev_node, b)