tests/lib/async/zone_create_timer_test.dart

// Copyright (c) 2013, 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.

import 'package:expect/expect.dart';
import 'package:async_helper/async_helper.dart';
import 'dart:async';

main() {
  Completer done = new Completer();
  List events = [];

  Expect.identical(Zone.ROOT, Zone.current);
  Zone forked;
  forked = Zone.current.fork(specification: new ZoneSpecification(
      createTimer: (Zone self, ZoneDelegate parent, Zone origin,
                    Duration duration, f()) {
        events.add("forked.createTimer");
        return parent.createTimer(origin, duration, () {
          events.add("wrapped function ${duration.inMilliseconds}");
          f();
        });
      }));

  asyncStart();
  forked.run(() {
    new Timer(Duration.ZERO, () {
      events.add("createTimer");
      Expect.identical(forked, Zone.current);
      done.complete(true);
    });
  });

  Expect.identical(Zone.ROOT, Zone.current);
  events.add("after createTimer");

  done.future.whenComplete(() {
    Expect.listEquals(
      [ "forked.createTimer", "after createTimer", "wrapped function 0",
        "createTimer" ],
      events);
    asyncEnd();
  });
}