def test_cycle_removed(self):
""" Test to make sure cycle detection is working. """
# create another node, Jules. Point it's next at John, and
# James's next at Jules. Joe is orpaned.
# John -> James -> Jules -> John | None -> Joe -> None
node_jules = Node('Jules')
self.node_james.next = node_jules
node_jules.next = self.node_john
def test_cycle_immediate(self):
""" Test to make sure cycle detection is working. """
# create another node, Jules. Point it's next at John, and
# John's next at Jules.
# John -> Jules -> John
node_jules = Node('Jules')
self.node_john.next = node_jules
node_jules.next = self.node_john
