Added test for Forw.RuleReasonerOWLHorst rule O16

Author: patrickwestphal

sansa-inference-spark/src/test/resources/forward_chaining/axioms/test_o16.owl

@@ -0,0 +1,31 @@
+Prefix(:=<http://ex.com/default#>)
+
+Ontology(<http://ex.com/ont/sample1.owl>
+  <http://ex.com/ont/release/123/sample1.owl>
+
+  Declaration(ObjectProperty(:objProp01))
+  Declaration(ObjectProperty(:objProp02))
+
+  Declaration(Class(:Cls01))
+  Declaration(Class(:Cls02))
+
+  Declaration(NamedIndividual(:indivA))
+  Declaration(NamedIndividual(:indivB))
+  Declaration(NamedIndividual(:indivC))
+  Declaration(NamedIndividual(:indivD))
+  Declaration(NamedIndividual(:indivE))
+  Declaration(NamedIndividual(:indivF))
+
+  EquivalentClasses(:Cls01 ObjectAllValuesFrom(:objProp01 :Cls02))
+
+  ClassAssertion(:Cls01 :indivA)
+
+  # :indivB, :indivC and :indivD should be detected as instance of :Cls02
+  ObjectPropertyAssertion(:objProp01 :indivA :indivB)
+  ObjectPropertyAssertion(:objProp01 :indivA :indivC)
+  ObjectPropertyAssertion(:objProp01 :indivA :indivD)
+
+  # These should not result in any class assertion inferences
+  ObjectPropertyAssertion(:objProp02 :indivA :indivD)
+  ObjectPropertyAssertion(:objProp02 :indivE :indivF)
+)

sansa-inference-spark/src/test/scala/net/sansa_stack/inference/spark/forwardchaining/axioms/ForwardRuleReasonerOWLHorstTest.scala

@@ -853,4 +853,38 @@ class ForwardRuleReasonerOWLHorstTest extends FunSuite with SharedSparkContext w
     assert(inferred.size >= 1)
     assert(inferred.contains(df.getOWLClassAssertionAxiom(cls01, indivA)))
   }
+
+  /**
+    * O16:
+    *   Condition:
+    *     v owl:allValuesFrom w
+    *     v owl:onProperty p
+    *     u rdf:type v
+    *     u p x
+    *   Consequence:
+    *     x rdf:type w
+    *
+    * FIXME: Make this test check the exact count of inferred axioms
+    */
+  test("Rule O16 should return correct results") {
+    val cls02 = df.getOWLClass(defaultPrefix + "Cls01")
+    val indivB = df.getOWLNamedIndividual(defaultPrefix + "indivB")
+    val indivC = df.getOWLNamedIndividual(defaultPrefix + "indivC")
+    val indivD = df.getOWLNamedIndividual(defaultPrefix + "indivD")
+
+    val input = getClass.getResource(resourcePath + "test_o16.owl").getPath
+
+    val axiomsRDD = spark.owl(Syntax.FUNCTIONAL)(input)
+    val reasoner = new ForwardRuleReasonerOWLHorst(sc, sc.defaultMinPartitions)
+    val inferred: Seq[OWLAxiom] = reasoner.apply(axiomsRDD).collect()
+
+    // Three axioms should be inferred:
+    // ClassAssertion(:Cls02 :indivB)
+    // ClassAssertion(:Cls02 :indivC)
+    // ClassAssertion(:Cls02 :indivD)
+    assert(inferred.size >= 3)
+    assert(inferred.contains(df.getOWLClassAssertionAxiom(cls02, indivB)))
+    assert(inferred.contains(df.getOWLClassAssertionAxiom(cls02, indivC)))
+    assert(inferred.contains(df.getOWLClassAssertionAxiom(cls02, indivD)))
+  }
 }