def test_relate_rev(self):
s = Node()
e = Node()
r = e.relate(s, '-', direction=-1)
_r = s.relate(e, '-', direction=1)
self.assertEqual(r, _r)
def test_relate(self):
s = Node()
e = Node()
r = s.relate(e, 'YES', direction=1)
_r = e.relate(s, 'YES', direction=-1)
self.assertEqual(r, _r)
# Any relationship
self.assertTrue(s.related(e))
self.assertTrue(e.related(s))
# Specific relationship
self.assertTrue(s.related(e, 'YES'))
self.assertTrue(e.related(s, 'YES'))
self.assertFalse(s.related(e, 'NO'))
self.assertFalse(e.related(s, 'NO'))
# Specific direction
self.assertTrue(s.related(e, 'YES', outgoing=True))
self.assertTrue(e.related(s, 'YES', incoming=True))
self.assertFalse(s.related(e, 'YES', incoming=True))
self.assertFalse(e.related(s, 'YES', outgoing=True))
def test(self):
s = Serializer()
n = Node({'foo': 'bar', 'bar': 1})
# Add properties for coverage
n.labels = ['Special']
n.match_props = ['foo']
n.update_props = ['bar']
rels = n.relate([Node() for _ in range(5)], 'NEXT')
o = Node()
n.relate(o, 'OTHER')
# Add properties for coverage
rels[0].match_props = ['foo']
rels[0].update_props = ['bar']
# Single relationship (and start and end node)
s.serialize(rels[0])
# Remaining rels
s.serialize(rels[1:])
s.serialize(n)
# No effect
s.serialize(n, traverse=False)
s.serialize(rels[0])
self.assertRaises(TypeError, s.serialize, None)
self.assertEqual(len(s.items), 13)
self.assertEqual(len(s.batches), 2)
def test(self):
n0, n1, n2, n3 = Node(), Node(), Node(), Node()
n0.relate([n1, n2, n3], 'CONTAINS')
n0.relate([n1, n2], 'RELATED')
# Get all relationships from n0
rels = n0.rels()
nodes = rels.nodes()
# Gets distinct set of end nodes of rels
self.assertCountEqual(nodes, [n1, n2, n3])
def test_relate_idempotent(self):
s = Node()
e = Node()
r0 = s.relate(e, 'YES')
r1 = s.relate(e, 'YES', {'one': 1})
r2 = s.relate(e, 'YES')
r3 = e.relate(s, 'YES', direction=-1)
self.assertEqual(r1, r0)
self.assertEqual(r2, r0)
self.assertEqual(r3, r0)
self.assertEqual(r0.props, {'one': 1})
def test_parse_merge_rel(self):
n = Node()
r = n.relate(Node(), 'TO', {'foo': 1, 'bar': 'a'}, match_props=['foo'])
s = "MERGE (x0)-[x2:TO {foo: 1}]->(x1) " \
"ON CREATE SET x2 = {bar: 'a', foo: 1} " \
"ON MATCH SET x2.bar = 'a', x2.foo = 1"
# Third statement.. after creating the nodes
self.assertEqual(neo4j.parse(serialize(r))[2], s)
def test_parse_merge_rel(self):
n = Node()
r = n.relate(Node(), 'TO', {'foo': 1, 'bar': 'a'}, match_props=['foo'])
s = "MERGE (x0)-[x2:TO {foo: 1}]->(x1) " \
"ON CREATE SET x2 = {bar: 'a', foo: 1} " \
"ON MATCH SET x2.bar = 'a', x2.foo = 1"
# Third statement.. after creating the nodes
self.assertEqual(neo4j.parse(serialize(r))[2], s)
def test_unrelate(self):
s = Node()
e = Node()
o = Node()
s.relate(e, 'A')
s.relate(e, 'B')
s.relate(e, 'C')
s.relate(o, 'B')
s.relate(o, 'D')
self.assertEqual(s.unrelate(e, 'A'), 1)
self.assertEqual(s.unrelate(e), 2)
self.assertEqual(s.unrelate(type='B'), 1)
self.assertEqual(s.unrelate(), 1)
e.relate(s, 'A')
s.relate(e, 'A')
self.assertEqual(s.unrelate(e, direction=1), 1)
self.assertEqual(s.unrelate(e, direction=-1), 1)
def test_rels(self):
s = Node()
e = Node()
o = Node()
r0 = s.relate(e, 'R')
r1 = s.relate(e, 'A', direction=-1)
r2 = s.relate(o, 'R')
self.assertCountEqual(s.rels(e), [r0, r1])
self.assertCountEqual(s.rels(e, direction=1), [r0])
self.assertCountEqual(s.rels(e, direction=-1), [r1])
self.assertCountEqual(s.rels(type='R'), [r0, r2])
self.assertCountEqual(s.rels(type='R', direction=1), [r0, r2])
self.assertCountEqual(s.rels(type='A', direction=-1), [r1])
self.assertCountEqual(s.rels(e, type='R'), [r0])
self.assertCountEqual(s.rels(e, type='R', direction=1), [r0])
self.assertCountEqual(s.rels(e, type='A', direction=-1), [r1])
self.assertCountEqual(s.rels(), [r0, r1, r2])
self.assertCountEqual(s.rels(direction=1), [r0, r2])
self.assertCountEqual(s.rels(direction=-1), [r1])
def setUp(self):
n = Node({'foo': 'bar', 'baz': 10})
# Add properties for coverage
n.labels = ['Special']
n.match_props = ['foo']
n.update_props = ['baz']
rels = []
for i in range(5):
rels.append(n.relate(Node({'index': i}), 'NEXT',
{'foo': i, 'bar': 2}))
rels[0].match_props = ['foo']
rels[0].update_props = ['bar']
self.data = serialize(n)
def setUp(self):
n = Node({'foo': 'bar', 'baz': 10})
# Add properties for coverage
n.labels = ['Special']
n.match_props = ['foo']
n.update_props = ['baz']
rels = []
for i in range(5):
rels.append(
n.relate(Node({'index': i}), 'NEXT', {
'foo': i,
'bar': 2
}))
rels[0].match_props = ['foo']
rels[0].update_props = ['bar']
self.data = serialize(n)
def test_degree(self):
n0 = Node()
n1 = Node()
n2 = Node()
n3 = Node()
self.assertEqual(n0.degree, 0)
n0.relate(n1, 'X')
self.assertEqual(n0.degree, 1)
self.assertEqual(n1.degree, 1)
n0.relate(n2, 'X')
self.assertEqual(n0.degree, 2)
self.assertEqual(n1.degree, 1)
self.assertEqual(n2.degree, 1)
n2.relate(n3, 'X')
self.assertEqual(n0.degree, 2)
self.assertEqual(n1.degree, 1)
self.assertEqual(n2.degree, 2)
self.assertEqual(n3.degree, 1)
def test_relate_multi(self):
s = Node()
o = Node()
t = Node()
s.relate([o, t], 'TRI')