def test_node_equality():
g = Graph()
node_1 = Node(g, 1234)
node_2 = Node(g, 1234)
node_3 = Node(g, 5678)
assert node_1 == node_2
assert node_1 != node_3
assert node_1 != "this is not a node"
def test_can_create_node():
g = Graph()
gh = Graph.Hydrator(g)
alice = gh.hydrate_node(1, {"Person"}, {"name": "Alice", "age": 33})
assert isinstance(alice, Node)
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 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"}
def test_can_create_path():
g = Graph()
gh = Graph.Hydrator(g)
alice = gh.hydrate_node(1, {"Person"}, {"name": "Alice", "age": 33})
bob = gh.hydrate_node(2, {"Person"}, {"name": "Bob", "age": 44})
carol = gh.hydrate_node(3, {"Person"}, {"name": "Carol", "age": 55})
alice_knows_bob = gh.hydrate_relationship(1, alice.id, bob.id, "KNOWS",
{"since": 1999})
carol_dislikes_bob = gh.hydrate_relationship(2, carol.id, bob.id,
"DISLIKES", {})
path = Path(alice, alice_knows_bob, carol_dislikes_bob)
assert isinstance(path, Path)
assert path.start_node == alice
assert path.end_node == carol
assert path.nodes == (alice, bob, carol)
assert path.relationships == (alice_knows_bob, carol_dislikes_bob)
assert list(path) == [alice_knows_bob, carol_dislikes_bob]
def test_can_create_path(self):
g = Graph()
gh = Graph.Hydrator(g)
alice = gh.hydrate_node(1, {"Person"}, {"name": "Alice", "age": 33})
bob = gh.hydrate_node(2, {"Person"}, {"name": "Bob", "age": 44})
carol = gh.hydrate_node(3, {"Person"}, {"name": "Carol", "age": 55})
alice_knows_bob = gh.hydrate_relationship(1, alice.id, bob.id, "KNOWS",
{"since": 1999})
carol_dislikes_bob = gh.hydrate_relationship(2, carol.id, bob.id,
"DISLIKES", {})
path = Path(alice, alice_knows_bob, carol_dislikes_bob)
self.assertEqual(path.start_node, alice)
self.assertEqual(path.end_node, carol)
self.assertEqual(path.nodes, (alice, bob, carol))
self.assertEqual(path.relationships,
(alice_knows_bob, carol_dislikes_bob))
self.assertEqual(list(path), [alice_knows_bob, carol_dislikes_bob])
self.assertTrue(repr(path))
def __init__(self):
super(DataHydrator, self).__init__()
self.graph = Graph()
self.graph_hydrator = Graph.Hydrator(self.graph)
self.hydration_functions = {
b"N": self.graph_hydrator.hydrate_node,
b"R": self.graph_hydrator.hydrate_relationship,
b"r": self.graph_hydrator.hydrate_unbound_relationship,
b"P": self.graph_hydrator.hydrate_path,
b"X": hydrate_point,
b"Y": hydrate_point,
b"D": hydrate_date,
b"T": hydrate_time, # time zone offset
b"t": hydrate_time, # no time zone
b"F": hydrate_datetime, # time zone offset
b"f": hydrate_datetime, # time zone name
b"d": hydrate_datetime, # no time zone
b"E": hydrate_duration,
}
def test_can_hydrate_path():
g = Graph()
gh = Graph.Hydrator(g)
alice = gh.hydrate_node(1, {"Person"}, {"name": "Alice", "age": 33})
bob = gh.hydrate_node(2, {"Person"}, {"name": "Bob", "age": 44})
carol = gh.hydrate_node(3, {"Person"}, {"name": "Carol", "age": 55})
r = [
gh.hydrate_unbound_relationship(1, "KNOWS", {"since": 1999}),
gh.hydrate_unbound_relationship(2, "DISLIKES", {})
]
path = gh.hydrate_path([alice, bob, carol], r, [1, 1, -2, 2])
assert path.start_node == alice
assert path.end_node == carol
assert path.nodes == (alice, bob, carol)
expected_alice_knows_bob = gh.hydrate_relationship(1, alice.id, bob.id,
"KNOWS",
{"since": 1999})
expected_carol_dislikes_bob = gh.hydrate_relationship(
2, carol.id, bob.id, "DISLIKES", {})
assert path.relationships == (expected_alice_knows_bob,
expected_carol_dislikes_bob)
assert list(path) == [
expected_alice_knows_bob, expected_carol_dislikes_bob
]
