def test_can_hydrate_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})
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])
self.assertEqual(path.start_node, alice)
self.assertEqual(path.end_node, carol)
self.assertEqual(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", {})
self.assertEqual(
path.relationships,
(expected_alice_knows_bob, expected_carol_dislikes_bob))
self.assertEqual(
list(path),
[expected_alice_knows_bob, expected_carol_dislikes_bob])
self.assertTrue(repr(path))
def test_path_hashing(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_1 = Path(alice, alice_knows_bob, carol_dislikes_bob)
path_2 = Path(alice, alice_knows_bob, carol_dislikes_bob)
self.assertEqual(hash(path_1), hash(path_2))
def test_can_create_relationship(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})
alice_knows_bob = gh.hydrate_relationship(1, alice.id, bob.id, "KNOWS",
{"since": 1999})
self.assertEqual(alice_knows_bob.start_node, alice)
self.assertEqual(alice_knows_bob.type, "KNOWS")
self.assertEqual(alice_knows_bob.end_node, bob)
self.assertEqual(set(alice_knows_bob.keys()), {"since"})
self.assertEqual(set(alice_knows_bob.values()), {1999})
self.assertEqual(set(alice_knows_bob.items()), {("since", 1999)})
self.assertEqual(alice_knows_bob.get("since"), 1999)
self.assertTrue(repr(alice_knows_bob))
def test_null_properties(self):
g = Graph()
gh = Graph.Hydrator(g)
stuff = gh.hydrate_node(1, (), {
"good": ["puppies", "kittens"],
"bad": None
})
self.assertEqual(set(stuff.keys()), {"good"})
self.assertEqual(stuff.get("good"), ["puppies", "kittens"])
self.assertIsNone(stuff.get("bad"))
self.assertEqual(len(stuff), 1)
self.assertEqual(stuff["good"], ["puppies", "kittens"])
self.assertIsNone(stuff["bad"])
self.assertIn("good", stuff)
self.assertNotIn("bad", stuff)
def test_can_create_node(self):
g = Graph()
gh = Graph.Hydrator(g)
alice = gh.hydrate_node(1, {"Person"}, {"name": "Alice", "age": 33})
self.assertEqual(alice.labels, {"Person"})
self.assertEqual(set(alice.keys()), {"name", "age"})
self.assertEqual(set(alice.values()), {"Alice", 33})
self.assertEqual(set(alice.items()), {("name", "Alice"), ("age", 33)})
self.assertEqual(alice.get("name"), "Alice")
self.assertEqual(alice.get("age"), 33)
self.assertTrue(repr(alice))
self.assertEqual(len(alice), 2)
self.assertEqual(alice["name"], "Alice")
self.assertEqual(alice["age"], 33)
self.assertIn("name", alice)
self.assertIn("age", alice)
self.assertEqual(set(iter(alice)), {"name", "age"})
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))