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"""
Test for OWL 2 RL/RDF rules from
Table 6. The Semantics of Classes
https://www.w3.org/TR/owl2-profiles/#Reasoning_in_OWL_2_RL_and_RDF_Graphs_using_Rules
"""
from unittest import mock
from rdflib import Graph, Literal, RDF, OWL
import sys
from pathlib import Path
sys.path.append(str(Path(__file__).parent.parent))
import owlrl
from owlrl.Namespaces import ERRNS, T
def test_cls_maxc1():
"""
Test cls-maxc1 rule for OWL 2 RL.
If::
T(?x, owl:maxCardinality, "0"^^xsd:nonNegativeInteger)
T(?x, owl:onProperty, ?p)
T(?u, rdf:type, ?x)
T(?u, ?p, ?y)
then::
false
"""
g = Graph()
x = T.x
p = T.p
c = T.C
u = T.u
y = T.y
g.add((x, OWL.maxCardinality, Literal(0)))
g.add((x, OWL.onProperty, p))
g.add((x, OWL.onClass, c))
g.add((u, RDF.type, x))
g.add((u, p, y))
owlrl.DeductiveClosure(owlrl.OWLRL_Semantics).expand(g)
result = next(g.objects(predicate=ERRNS.error))
expected = Literal(
"Erroneous usage of maximum cardinality with"
" http://test.org/x and http://test.org/y"
)
assert expected == result
def test_cls_maxc2():
"""
Test cls-maxc2 rule for OWL 2 RL.
If::
T(?x, owl:maxCardinality, "1"^^xsd:nonNegativeInteger)
T(?x, owl:onProperty, ?p)
T(?u, rdf:type, ?x)
T(?u, ?p, ?y1)
T(?u, ?p, ?y2)
then::
T(?y1, owl:sameAs, ?y2)
"""
g = Graph()
x = T.x
p = T.p
u = T.u
y1 = T.y1
y2 = T.y2
g.add((x, OWL.maxCardinality, Literal(1)))
g.add((x, OWL.onProperty, p))
g.add((u, RDF.type, x))
g.add((u, p, y1))
g.add((u, p, y2))
owlrl.DeductiveClosure(owlrl.OWLRL_Semantics).expand(g)
assert (y1, OWL.sameAs, y2) in g
def test_cls_maxqc1():
"""
Test cls-maxqc1 rule for OWL 2 RL.
If::
T(?x, owl:maxQualifiedCardinality, "0"^^xsd:nonNegativeInteger)
T(?x, owl:onProperty, ?p)
T(?x, owl:onClass, ?c)
T(?u, rdf:type, ?x)
T(?u, ?p, ?y)
T(?y, rdf:type, ?c)
then::
false
"""
g = Graph()
g.add((T.x, OWL.maxQualifiedCardinality, Literal(0)))
g.add((T.x, OWL.onProperty, T.p))
g.add((T.x, OWL.onClass, T.C))
g.add((T.u, RDF.type, T.x))
g.add((T.u, T.p, T.y))
g.add((T.y, RDF.type, T.C))
owlrl.DeductiveClosure(owlrl.OWLRL_Semantics).expand(g)
result = next(g.objects(predicate=ERRNS.error))
expected = Literal(
"Erroneous usage of maximum qualified cardinality with"
" http://test.org/x, http://test.org/C and http://test.org/y"
)
assert expected == result
def test_cls_maxqc2():
"""
Test cls-maxqc2 rule for OWL 2 RL.
If::
T(?x, owl:maxQualifiedCardinality, "0"^^xsd:nonNegativeInteger)
T(?x, owl:onProperty, ?p)
T(?x, owl:onClass, owl:Thing)
T(?u, rdf:type, ?x)
T(?u, ?p, ?y)
then::
false
"""
g = Graph()
x = T.x
p = T.p
u = T.u
y = T.y
g.add((x, OWL.maxQualifiedCardinality, Literal(0)))
g.add((x, OWL.onProperty, p))
g.add((x, OWL.onClass, OWL.Thing))
g.add((u, RDF.type, x))
g.add((u, p, y))
owlrl.DeductiveClosure(owlrl.OWLRL_Semantics).expand(g)
result = next(g.objects(predicate=ERRNS.error))
expected = Literal(
"Erroneous usage of maximum qualified cardinality with"
+ " http://test.org/x, http://www.w3.org/2002/07/owl#Thing and"
+ " http://test.org/y"
)
assert expected == result
def test_cls_maxqc3():
"""
Test cls-maxqc3 rule for OWL 2 RL.
If::
T(?x, owl:maxQualifiedCardinality, "1"^^xsd:nonNegativeInteger)
T(?x, owl:onProperty, ?p)
T(?x, owl:onClass, ?c)
T(?u, rdf:type, ?x)
T(?u, ?p, ?y1)
T(?y1, rdf:type, ?c)
T(?u, ?p, ?y2)
T(?y2, rdf:type, ?c)
then::
T(?y1, owl:sameAs, ?y2)
"""
g = Graph()
x = T.x
p = T.p
c = T.C
u = T.u
y1 = T.y1
y2 = T.y2
g.add((x, OWL.maxQualifiedCardinality, Literal(1)))
g.add((x, OWL.onProperty, p))
g.add((x, OWL.onClass, c))
g.add((u, RDF.type, x))
g.add((u, p, y1))
g.add((y1, RDF.type, c))
g.add((u, p, y2))
g.add((y2, RDF.type, c))
owlrl.DeductiveClosure(owlrl.OWLRL_Semantics).expand(g)
assert (y1, OWL.sameAs, y2) in g
def test_cls_maxqc4():
"""
Test cls-maxqc4 rule for OWL 2 RL.
If::
T(?x, owl:maxQualifiedCardinality, "1"^^xsd:nonNegativeInteger)
T(?x, owl:onProperty, ?p)
T(?x, owl:onClass, owl:Thing)
T(?u, rdf:type, ?x)
T(?u, ?p, ?y1)
T(?u, ?p, ?y2)
then::
T(?y1, owl:sameAs, ?y2)
"""
g = Graph()
x = T.x
p = T.p
u = T.u
y1 = T.y1
y2 = T.y2
g.add((x, OWL.maxQualifiedCardinality, Literal(1)))
g.add((x, OWL.onProperty, p))
g.add((x, OWL.onClass, OWL.Thing))
g.add((u, RDF.type, x))
g.add((u, p, y1))
g.add((u, p, y2))
owlrl.DeductiveClosure(owlrl.OWLRL_Semantics).expand(g)
assert (y1, OWL.sameAs, y2) in g
def test_cls_avf():
"""
Test for cls-avf rule for OWL 2 RL.
If::
T(?x, owl:allValuesFrom, ?y)
T(?x, owl:onProperty, ?p)
T(?u, rdf:type, ?x)
T(?u, ?p, ?v)
and type restriction *valid*, then::
T(?v, rdf:type, ?y)
"""
g = Graph()
x = T.x
p = T.p
u = T.u
y = T.y
v = T.v
g.add((x, OWL.allValuesFrom, y))
g.add((x, OWL.onProperty, p))
g.add((u, RDF.type, x))
g.add((u, p, v))
owlrl.DeductiveClosure(owlrl.OWLRL_Semantics).expand(g)
assert (v, RDF.type, y) in g
@mock.patch.object(owlrl.OWLRL_Semantics, "restriction_typing_check")
def test_cls_avf_error(mock_rtc):
"""
Test restriction type check for cls-avf rule for OWL 2 RL.
If::
T(?x, owl:allValuesFrom, ?y)
T(?x, owl:onProperty, ?p)
T(?u, rdf:type, ?x)
T(?u, ?p, ?v)
and type restriction *invalid*, then::
false
"""
g = Graph()
x = T.x
p = T.p
u = T.u
y = T.y
v = T.v
g.add((x, OWL.allValuesFrom, y))
g.add((x, OWL.onProperty, p))
g.add((u, RDF.type, x))
g.add((u, p, v))
# trigger invalid restriction type
mock_rtc.return_value = False
owlrl.DeductiveClosure(owlrl.OWLRL_Semantics).expand(g)
result = next(g.objects(predicate=ERRNS.error))
expected = Literal(
"Violation of type restriction for allValuesFrom in http://test.org/p"
" for datatype http://test.org/y on value http://test.org/v"
)
assert expected == result
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