LibTest/async/Zone/bindCallbackGuarded_A01_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.

// @dart = 2.9

/// @assertion void Function() bindCallbackGuarded(void callback())
///    Registers the provided callback and returns a function that will execute
/// in this zone.
///    When the function executes, errors are caught and treated as uncaught
/// errors.
///    Equivalent to:
///  ZoneCallback registered = this.registerCallback(callback);
///  return () => this.runGuarded(registered);
/// @description Checks that [callback] is run in the zone it was bound to.
/// @author a.semenov@unipro.ru


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

main() {
  Zone zone = Zone.current;
  Zone callbackZone = null;

  void Function() boundCallback = zone.bindCallbackGuarded(() {
    callbackZone = Zone.current;
  });

  runZoned(() {
    boundCallback();
  });
  Expect.equals(zone, callbackZone);
}