socialDocument = toSocialDocument(article);
exposedDocument = socialDocument.getPublicDocument();
assertEquals("Test2", exposedDocument.getPropertyValue("dc:title"));
assertEquals(initialExposedDocument.getId(), exposedDocument.getId());
socialDocument.restrictToMembers();
exposedDocument = socialDocument.getRestrictedDocument();
assertEquals("Test2", exposedDocument.getPropertyValue("dc:title"));
assertNotSame(initialExposedDocument.getId(), exposedDocument.getId());
// Id change for Article when visibility change