def test_node_equal(self):
n1 = Node(1)
n2 = Node(2)
n1.next = n2
n3 = Node(1)
n4 = Node(2)
n3.next = n4
self.assertEqual(n1, n3)
def test_node_repr(self):
n = Node(1)
n2 = Node(2)
n.next = n2
self.assertEqual(repr(n),
"Node({}, {})".format(repr(n.value), repr(n.next)))
def test_next_set_invalid(self):
with self.assertRaises(ValueError):
n = Node(1)
n.next = "Hello"
def test_next(self):
n1 = Node(1)
n2 = Node(2)
n1.next = n2
self.assertIs(n1.next, n2)
def test_next_set_none(self):
n = Node(1)
n.next = None
self.assertIsNone(n.next)