anchor.diff:          
           // Mongo fortunes test
           app.get("/fortunes-mongo").listen((request) {
  -          print("works");
  +          
             _setHtmlHeaders(request.response);
  +          
             _fortuneCollection.find().toList().then((fortunes) {
               fortunes = fortunes.map((fortune) {
                 return new Fortune(fortune["id"], fortune["message"]);
  
positive.code:         // Mongo updates test
          app.get("/updates-mongo").listen((request) {
            var queries = _parseQueriesParam(request.param("queries"));
            
            Future.wait(new List.generate(queries, (index) {
              return _mongoQuery()
                  .then((world) {
  
negative.code:         
          // Mongo query test
          app.get("/db-mongo").listen((request) {
  
            _setJsonHeaders(request.response);
  
            _mongoQuery().then((data) {
              request.response.json({
                "id": data["id"],
  