OWLClass clsB = Class(iri("B"));
OWLClass clsC = Class(iri("C"));
OWLClass clsD = Class(iri("D"));
OWLObjectProperty prop = ObjectProperty(iri("prop"));
OWLOntologyManager man = ont.getOWLOntologyManager();
OWLEquivalentClassesAxiom ax = EquivalentClasses(clsA, clsB, clsC,
ObjectSomeValuesFrom(prop, clsD));
man.addAxiom(ont, ax);
performAxiomTests(ont, ax);
assertTrue(ont.getEquivalentClassesAxioms(clsA).contains(ax));
assertTrue(ont.getEquivalentClassesAxioms(clsB).contains(ax));