| // 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(fork: |
| (Zone self, ZoneDelegate parent, Zone origin, |
| ZoneSpecification? zoneSpecification, Map<Object?, Object?>? mapValues) { |
| // The zone is still the same as when origin.run was invoked, which |
| // is the root zone. (The origin zone hasn't been set yet). |
| Expect.identical(Zone.root, Zone.current); |
| events.add("forked.fork"); |
| var descriptionRun = zoneSpecification!.run!; |
| ZoneSpecification modified = new ZoneSpecification.from(zoneSpecification, |
| run: <R>(self, parent, origin, R f()) { |
| events.add("wrapped run"); |
| return descriptionRun(self, parent, origin, () { |
| events.add("wrapped f"); |
| return f(); |
| }); |
| }); |
| return parent.fork(origin, modified, mapValues); |
| })); |
| |
| events.add("start"); |
| Zone forkedChild = forked.fork(specification: new ZoneSpecification( |
| run: <R>(Zone self, ZoneDelegate parent, Zone origin, R f()) { |
| events.add("executing child run"); |
| return parent.run(origin, f); |
| })); |
| |
| events.add("after child fork"); |
| Expect.identical(Zone.root, Zone.current); |
| |
| forkedChild.run(() { |
| events.add("child run"); |
| }); |
| |
| events.add("after child run"); |
| |
| Expect.listEquals([ |
| "start", |
| "forked.fork", |
| "after child fork", |
| "wrapped run", |
| "executing child run", |
| "wrapped f", |
| "child run", |
| "after child run" |
| ], events); |
| } |