@Test
public void testHasKnownURI() throws UnknownHostException {

    CrawleableUri uri = factory.create(URI.create("http://example.org/uri_1"), InetAddress.getByName("127.0.0.1"),
            UriType.UNKNOWN);
    long timestamp = System.currentTimeMillis();
    r.db("squirrel").table("knownurifilter").insert(convertURITimestampToRDB(uri, timestamp)).run(rdbConnector.connection);
    Cursor cursor = r.db("squirrel").table("knownurifilter").getAll(uri.getUri().toString()).optArg("index", "uri").run(rdbConnector.connection);
    assert(cursor.hasNext());
    cursor.close();
}