blob: ebf78ee35d0e81c160b32a3d1f30149f6d220315 [file] [log] [blame]
// 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(runUnary:
<R, T>(Zone self, ZoneDelegate parent, Zone origin, R f(T arg), T arg) {
// The zone is still the same as when was invoked, which
// is the root zone. (The origin zone hasn't been set yet).
Expect.identical(Zone.current, Zone.root);
if (shouldForward)
return parent.runUnary<R, T>(origin, f, ((arg as int) + 1) as T);
return 42 as R;
events.add("zone forked");
Zone expectedZone = forked;
var result = forked.runUnary((arg) {
Expect.identical(expectedZone, Zone.current);
events.add("run closure");
return arg + 3;
}, 495);
Expect.equals(499, result);
events.add("executed run");
shouldForward = false;
result = forked.runUnary<int, int>((arg) {"should not be invoked");
}, 99);
Expect.equals(42, result);
events.add("executed run2");
shouldForward = true;
result = forked.runUnary((arg) {
Expect.identical(forked, Zone.current);
events.add("run closure 2");
scheduleMicrotask(() {
events.add("run closure 3");
Expect.identical(forked, Zone.current);
return -arg - 8;
}, 490);
events.add("after nested scheduleMicrotask");
Expect.equals(-499, result);
done.future.whenComplete(() {
"zone forked",
"run closure",
"executed run",
"executed run2",
"run closure 2",
"after nested scheduleMicrotask",
"run closure 3"
], events);