Robert Nystrom
d3904f5a54
Change-Id: I6ccbe1494165c2bda142ece13584c4738e3b43e6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425347 Commit-Queue: Lasse Nielsen <lrn@google.com> Reviewed-by: Lasse Nielsen <lrn@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
75 lines
2.1 KiB
Dart
75 lines
2.1 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:expect/async_helper.dart';
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import 'package:expect/expect.dart';
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import 'dart:async';
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main() {
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Completer done = new Completer();
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List events = [];
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Expect.identical(Zone.root, Zone.current);
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Zone forked;
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forked = Zone.current.fork(
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specification: new ZoneSpecification(
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fork:
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(
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Zone self,
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ZoneDelegate parent,
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Zone origin,
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ZoneSpecification? zoneSpecification,
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Map<Object?, Object?>? mapValues,
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) {
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// The zone is still the same as when origin.run was invoked, which
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// is the root zone. (The origin zone hasn't been set yet).
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Expect.identical(Zone.root, Zone.current);
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events.add("forked.fork");
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var descriptionRun = zoneSpecification!.run!;
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ZoneSpecification modified = new ZoneSpecification.from(
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zoneSpecification,
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run: <R>(self, parent, origin, R f()) {
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events.add("wrapped run");
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return descriptionRun(self, parent, origin, () {
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events.add("wrapped f");
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return f();
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});
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},
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);
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return parent.fork(origin, modified, mapValues);
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},
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),
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);
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events.add("start");
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Zone forkedChild = forked.fork(
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specification: new ZoneSpecification(
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run: <R>(Zone self, ZoneDelegate parent, Zone origin, R f()) {
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events.add("executing child run");
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return parent.run(origin, f);
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},
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),
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);
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events.add("after child fork");
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Expect.identical(Zone.root, Zone.current);
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forkedChild.run(() {
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events.add("child run");
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});
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events.add("after child run");
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Expect.listEquals([
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"start",
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"forked.fork",
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"after child fork",
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"wrapped run",
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"executing child run",
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"wrapped f",
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"child run",
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"after child run",
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], events);
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}
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