| // 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 = []; |
| |
| bool shouldForward = true; |
| Expect.identical(Zone.root, Zone.current); |
| Zone forked = Zone.current.fork(specification: new ZoneSpecification( |
| run: <R>(Zone self, ZoneDelegate parent, Zone origin, R f()) { |
| // 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.run"); |
| if (shouldForward) return parent.run(origin, f); |
| return 42 as R; |
| })); |
| |
| events.add("zone forked"); |
| Zone expectedZone = forked; |
| var result = forked.run(() { |
| Expect.identical(expectedZone, Zone.current); |
| events.add("run closure"); |
| return 499; |
| }); |
| Expect.equals(499, result); |
| events.add("executed run"); |
| |
| shouldForward = false; |
| result = forked.run(() { |
| Expect.fail("should not be invoked"); |
| }); |
| Expect.equals(42, result); |
| events.add("executed run2"); |
| |
| asyncStart(); |
| shouldForward = true; |
| result = forked.run(() { |
| Expect.identical(forked, Zone.current); |
| events.add("run closure 2"); |
| forked.scheduleMicrotask(() { |
| events.add("run closure 3"); |
| Expect.identical(forked, Zone.current); |
| done.complete(true); |
| }); |
| return 1234; |
| }); |
| events.add("after nested scheduleMicrotask"); |
| Expect.equals(1234, result); |
| |
| done.future.whenComplete(() { |
| Expect.listEquals([ |
| "zone forked", |
| "forked.run", |
| "run closure", |
| "executed run", |
| "forked.run", |
| "executed run2", |
| "forked.run", |
| "run closure 2", |
| "after nested scheduleMicrotask", |
| "forked.run", |
| "run closure 3" |
| ], events); |
| asyncEnd(); |
| }); |
| |
| var zone1 = Zone.root.fork(); |
| var zone2 = Zone.root.fork(); |
| var zone3 = Zone.root.fork(); |
| asyncStart(); |
| asyncStart(); |
| zone1.run(() { |
| var future = new Future.value(); |
| zone2.run(() { |
| future.then((_) { |
| Expect.identical(zone2, Zone.current); |
| asyncEnd(); |
| }); |
| }); |
| zone3.run(() { |
| future.then((_) { |
| Expect.identical(zone3, Zone.current); |
| asyncEnd(); |
| }); |
| }); |
| }); |
| } |