def test_removing_non_existent_label_fails(self):
node = Node("Person", name="Alice")
with self.assertRaises(KeyError):
node.remove_label("Employee")
def test_removing_non_existent_label_fails(self):
node = Node("Person", name="Alice")
with self.assertRaises(KeyError):
node.remove_label("Employee")
def test_can_remove_label(self):
node = Node("Person", "Employee", name="Alice")
node.remove_label("Employee")
assert node.labels() == {"Person"}
def test_can_remove_label(self):
node = Node("Person", "Employee", name="Alice")
node.remove_label("Employee")
assert node.labels() == {"Person"}
