Content content = createDummyContentFromUrl(contentUrl);
content.addAttribute(new Attribute("from_id", "friendId",
Attribute.ATTRIBUTE_TYPE_TEXT));
content.addAttribute(new Attribute("name", "post name",
Attribute.ATTRIBUTE_TYPE_TEXT));
content.addAttribute(new Attribute("message", "post message",
Attribute.ATTRIBUTE_TYPE_TEXT));
// check if documents exists in object graph
assertTrue(repo.getContentByProvider(providerID, true).size() == 0);