def test_binding_node_if_labels_not_supported_casts_to_legacy_node():
with patch("py2neo.Graph.supports_node_labels") as mocked:
mocked.__get__ = Mock(return_value=False)
alice = Node(name="Alice Smith")
assert isinstance(alice, Node)
alice.bind("http://localhost:7474/db/data/node/1")
assert isinstance(alice, LegacyNode)
def test_bound_node_equality():
alice_1 = Node(name="Alice")
alice_1.bind("http://localhost:7474/db/data/node/1")
Node.cache.clear()
alice_2 = Node(name="Alice")
alice_2.bind(alice_1.uri)
assert alice_1 == alice_2
def test_bound_node_equality():
alice_1 = Node(name="Alice")
alice_1.bind("http://localhost:7474/db/data/node/1")
Node.cache.clear()
alice_2 = Node(name="Alice")
alice_2.bind(alice_1.uri)
assert alice_1 == alice_2
def test_binding_node_if_labels_not_supported_casts_to_legacy_node():
with patch("py2neo.Graph.supports_node_labels") as mocked:
mocked.__get__ = Mock(return_value=False)
alice = Node(name="Alice Smith")
assert isinstance(alice, Node)
alice.bind("http://localhost:7474/db/data/node/1")
assert isinstance(alice, LegacyNode)
def test_can_pull_node(graph):
uri = graph.cypher.execute_one("CREATE (a {name:'Alice'}) RETURN a").uri
alice = Node()
alice.bind(uri)
assert alice.properties["name"] is None
batch = PullBatch(graph)
batch.append(alice)
batch.pull()
assert alice.properties["name"] == "Alice"
def test_rel_and_rev_hashes(graph):
assert hash(Rel("KNOWS")) == hash(Rel("KNOWS"))
assert hash(Rel("KNOWS")) == -hash(Rev("KNOWS"))
assert hash(Rel("KNOWS", well=True, since=1999)) == hash(Rel("KNOWS", since=1999, well=True))
rel_1 = Node("KNOWS", since=1999)
graph.create(rel_1)
rel_2 = Node("KNOWS", since=1999)
rel_2.bind(rel_1.uri)
assert rel_1 is not rel_2
assert hash(rel_1) == hash(rel_2)
def test_rel_and_rev_hashes(graph):
assert hash(Rel("KNOWS")) == hash(Rel("KNOWS"))
assert hash(Rel("KNOWS")) == -hash(Rev("KNOWS"))
assert hash(Rel("KNOWS", well=True,
since=1999)) == hash(Rel("KNOWS", since=1999, well=True))
rel_1 = Node("KNOWS", since=1999)
graph.create(rel_1)
rel_2 = Node("KNOWS", since=1999)
rel_2.bind(rel_1.uri)
assert rel_1 is not rel_2
assert hash(rel_1) == hash(rel_2)
def test_node_hashes(graph):
assert hash(Node()) == hash(Node())
assert hash(Node(name="Alice")) == hash(Node(name="Alice"))
assert hash(Node(name="Alice", age=33)) == hash(Node(age=33, name="Alice"))
assert hash(Node("Person", name="Alice", age=33)) == hash(Node("Person", age=33, name="Alice"))
node_1 = Node("Person", name="Alice")
graph.create(node_1)
node_2 = Node("Person", name="Alice")
node_2.bind(node_1.uri)
assert node_1 is not node_2
assert hash(node_1) == hash(node_2)
def test_node_hashes(graph):
assert hash(Node()) == hash(Node())
assert hash(Node(name="Alice")) == hash(Node(name="Alice"))
assert hash(Node(name="Alice", age=33)) == hash(Node(age=33, name="Alice"))
assert hash(Node("Person", name="Alice",
age=33)) == hash(Node("Person", age=33, name="Alice"))
node_1 = Node("Person", name="Alice")
graph.create(node_1)
node_2 = Node("Person", name="Alice")
node_2.bind(node_1.uri)
assert node_1 is not node_2
assert hash(node_1) == hash(node_2)
def test_node_exists_will_raise_non_404_errors():
with patch.object(_Resource, "get") as mocked:
error = GraphError("bad stuff happened")
error.response = DodgyClientError()
mocked.side_effect = error
alice = Node(name="Alice Smith")
alice.bind("http://localhost:7474/db/data/node/1")
try:
_ = alice.exists
except GraphError:
assert True
else:
assert False
def test_can_pull_node_with_label(graph):
if not graph.supports_node_labels:
return
uri = graph.cypher.execute_one("CREATE (a:Person {name:'Alice'}) RETURN a").uri
alice = Node()
alice.bind(uri)
assert "Person" not in alice.labels
assert alice.properties["name"] is None
batch = PullBatch(graph)
batch.append(alice)
batch.pull()
assert "Person" in alice.labels
assert alice.properties["name"] == "Alice"
def test_node_exists_will_raise_non_404_errors():
with patch.object(_Resource, "get") as mocked:
error = GraphError("bad stuff happened")
error.response = DodgyClientError()
mocked.side_effect = error
alice = Node(name="Alice Smith")
alice.bind("http://localhost:7474/db/data/node/1")
try:
_ = alice.exists
except GraphError:
assert True
else:
assert False
def test_can_join_similar_bound_nodes():
alice.bind("http://localhost:7474/db/data/node/1")
Node.cache.clear()
alice_2 = Node(name="Alice")
alice_2.bind(alice.uri)
assert Node.join(alice, alice_2) == alice
from __future__ import print_function
from py2neo import Graph, Node, Relationship
graph_db = Graph()
person = Node("Person", name="JUHASZ Lilla Linda")
for record in graph_db.cypher.execute("Match (n) return n"):
print(record)
new_person = Node("Person", name="JUHASZ Peter", born=1930)
print("exists: " + str(list(graph_db.find("Person", property_key="name", property_value="JUHASZ Peter"))))
new_person.bind(graph_db.uri)
print("exists: " + str(new_person.exists))
father = graph_db.find_one("Person", property_key='name', property_value="JUHASZ Peter")
child = graph_db.find_one("Person", property_key='name', property_value="JUHASZ Lilla Linda")
child_of_rel = "CHILD_OF"
father_daughter_relationship = Relationship(child, child_of_rel, father)
graph_db.create(father_daughter_relationship)
def test_bound_node_equals_unbound_node_with_same_properties():
alice_1 = Node(name="Alice")
alice_1.bind("http://localhost:7474/db/data/node/1")
alice_2 = Node(name="Alice")
assert alice_1 == alice_2
def test_bound_node_equals_unbound_node_with_same_properties():
alice_1 = Node(name="Alice")
alice_1.bind("http://localhost:7474/db/data/node/1")
alice_2 = Node(name="Alice")
assert alice_1 == alice_2
def test_can_join_similar_bound_nodes():
alice.bind("http://localhost:7474/db/data/node/1")
Node.cache.clear()
alice_2 = Node(name="Alice")
alice_2.bind(alice.uri)
assert Node.join(alice, alice_2) == alice
