def test_null_properties(self):
stuff = Node(good=["puppies", "kittens"], bad=None)
assert set(stuff.keys()) == {"good"}
assert stuff.get("good") == ["puppies", "kittens"]
assert stuff.get("bad") is None
assert len(stuff) == 1
assert stuff["good"] == ["puppies", "kittens"]
assert stuff["bad"] is None
assert "good" in stuff
assert "bad" not in stuff
def test_can_create_node(self):
alice = Node({"Person"}, {"name": "Alice", "age": 33})
assert alice.labels == {"Person"}
assert set(alice.keys()) == {"name", "age"}
assert set(alice.values()) == {"Alice", 33}
assert set(alice.items()) == {("name", "Alice"), ("age", 33)}
assert alice.get("name") == "Alice"
assert alice.get("age") == 33
assert repr(alice)
assert len(alice) == 2
assert alice["name"] == "Alice"
assert alice["age"] == 33
assert "name" in alice
assert "age" in alice
assert set(iter(alice)) == {"name", "age"}