LibTest/async/StreamController/StreamController_A03_t01.dart

/*
 * Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 * for details. All rights reserved. Use of this source code is governed by a
 * BSD-style license that can be found in the LICENSE file.
 */
/**
 * @assertion factory StreamController({void onListen(), void onPause(),
 *                  void onResume(), void onCancel(), bool sync: false})
 * The controller will buffer all incoming events until the subscriber is registered.
 * @description Checks that the controller will buffer all incoming events until the subscriber is registered.
 * @author kaigorodov
 */

import "dart:async";
import "../../../Utils/async_utils.dart";
import "../../../Utils/expect.dart";

void check(List source) {
  StreamController controller=new StreamController();
  Stream s=controller.stream;
  List sink=new List();
  
  for(var element in source) {
    controller.add(element);
  }
  Expect.isTrue(sink.isEmpty);

  asyncStart();
  s.listen((var event){
      sink.add(event);
    }
  ).onDone((){
      Expect.listEquals(source, sink);
      asyncEnd();
  }); 
  
  controller.close();
}

main() {
  check([]);
  check([null, null, null, null]);
  check([1,2,3,4,5,6,7,8,9,0]);
}