Robert Nystrom
a2b556b937
Change-Id: Ia5c41dda6503e1fbb8cc6099835d07588425e2ba Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128310 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
92 lines
2.5 KiB
Dart
92 lines
2.5 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/expect.dart';
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import 'package:async_helper/async_helper.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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// runGuarded calls run, captures the synchronous error (if any) and
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// gives that one to handleUncaughtError.
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var result;
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Expect.identical(Zone.root, Zone.current);
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late Zone forked;
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forked = Zone.current.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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// 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.run");
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return parent.run(origin, f);
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}, handleUncaughtError:
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(Zone self, ZoneDelegate parent, Zone origin, error, stackTrace) {
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Expect.identical(Zone.root, Zone.current);
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Expect.identical(forked, origin);
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events.add("forked.handleUncaught $error");
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result = 499;
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}));
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forked.runGuarded(() {
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events.add("runGuarded 1");
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Expect.identical(forked, Zone.current);
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result = 42;
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});
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Expect.identical(Zone.root, Zone.current);
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Expect.equals(42, result);
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events.add("after runGuarded 1");
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result = null;
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forked.runGuarded(() {
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events.add("runGuarded 2");
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Expect.identical(forked, Zone.current);
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throw 42;
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});
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Expect.equals(499, result);
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Expect.listEquals([
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"forked.run",
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"runGuarded 1",
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"after runGuarded 1",
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"forked.run",
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"runGuarded 2",
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"forked.handleUncaught 42"
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], events);
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result = null;
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events.clear();
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asyncStart();
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forked.runGuarded(() {
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Expect.identical(forked, Zone.current);
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events.add("run closure");
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forked.scheduleMicrotask(() {
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events.add("run closure 2");
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Expect.identical(forked, Zone.current);
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done.complete(true);
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throw 88;
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});
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throw 1234;
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});
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events.add("after nested scheduleMicrotask");
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Expect.equals(499, result);
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done.future.whenComplete(() {
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Expect.listEquals([
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"forked.run",
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"run closure",
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"forked.handleUncaught 1234",
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"after nested scheduleMicrotask",
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"forked.run",
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"run closure 2",
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"forked.handleUncaught 88"
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], events);
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asyncEnd();
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});
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}
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