anchor.diff:        response.listen((_) {}, onDone: () {
           client.close();
           server.close();
  -        completer.complete(null);
  +        completer.complete();
         });
       });
     });
  
positive.code: // BSD-style license that can be found in the LICENSE file.
  
  import "dart:async";
  import "dart:io" hide HttpServer, HttpClient;
  
  import "package:http_io/http_io.dart";
  import "package:test/test.dart";
  
  Future<Null> testHttpConnectionInfo() {
    Completer<Null> completer = new Completer();
    HttpServer.bind("0.0.0.0", 0).then((server) {
      int clientPort;
  
  
negative.code: }
  
  void main() {
    test('HttpConnectionInfo', () => testHttpConnectionInfo());
  }
  