@Test
public void testEmptyFavourites() {
QueryFavourites hist = new QueryFavourites();
assertEquals(0, hist.size());
assertFalse(hist.copyAsSortedSet().iterator().hasNext());
CqlQuery query = new CqlQuery(CqlQueryType.SELECT, "select * from MyTable");
QueryEntry histEntry = new QueryEntry(query, 6456);
assertFalse(hist.contains(histEntry));
try {