IncrementalResults results = ((InternalKieBuilder) kieBuilder).createFileSet("src/main/resources/r2.drl").build();
assertEquals(1, results.getAddedMessages().size());
assertEquals(0, results.getRemovedMessages().size());
kieContainer.updateToVersion(ks.getRepository().getDefaultReleaseId());
ksession = kieContainer.newKieSession();
ksession.insert(new Message("Hello World"));
assertEquals( 1, ksession.fireAllRules() );
}