1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
"""
Issue 715 - path query chaining issue
Some incorrect matches were found when using oneOrMore ('+') and
zeroOrMore ('*') property paths and specifying neither the
subject or the object.
"""
from rdflib import URIRef, Graph
def test_issue_715():
g = Graph()
a, b, x, y, z = [URIRef(s) for s in "abxyz"]
isa = URIRef("isa")
g.add((a, isa, x))
g.add((a, isa, y))
g.add((b, isa, x))
l1 = list(g.query("SELECT ?child ?parent WHERE {?child <isa> ?parent .}"))
l2 = list(g.query("SELECT ?child ?parent WHERE {?child <isa>+ ?parent .}"))
assert len(l1) == len(l2)
assert set(l1) == set(l2)
l3 = list(g.query("SELECT ?child ?parent WHERE {?child <isa>* ?parent .}"))
assert len(l3) == 7
assert set(l3) == set(l1).union({(URIRef(n), URIRef(n)) for n in (a, b, x, y)})
g.add((y, isa, z))
l4 = list(g.query("SELECT ?child ?parent WHERE {?child <isa>* ?parent .}"))
assert len(l4) == 10
assert (a, z) in l4
|
