space = factory.createCustomOntologySpace(scopeId, dropSrc);
IRI dropId = dropSrc.getRootOntology().getOntologyID().getOntologyIRI();
IRI nonexId = nonexSrc.getRootOntology().getOntologyID().getOntologyIRI();
space.addOntology(inMemorySrc);
space.addOntology(nonexSrc);
// The other remote ontologies may change base IRI...
assertTrue(space.hasOntology(ont.getOntologyID().getOntologyIRI()) && space.hasOntology(dropId)
&& space.hasOntology(nonexId));
space.removeOntology(dropId);
assertFalse(space.hasOntology(dropId));