dart-sdk/tests/lib/async/zone_empty_description2_test.dart
Robert Nystrom a2b556b937 Migrate lib_2/async to NNBD.
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>
2020-01-09 22:04:37 +00:00

41 lines
1.2 KiB
Dart

// 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';
testEmptyZoneSpecification() {
Expect.identical(Zone.root, Zone.current);
Zone forked = Zone.current.fork();
Expect.isFalse(identical(Zone.root, forked));
asyncStart();
bool timerDidRun = false;
forked.createTimer(const Duration(milliseconds: 20), () {
// The createTimer function on the Zone binds the closures.
Expect.identical(forked, Zone.current);
timerDidRun = true;
asyncEnd();
});
Expect.identical(Zone.root, Zone.current);
asyncStart();
int periodicTimerCount = 0;
forked.createPeriodicTimer(const Duration(milliseconds: 20), (Timer timer) {
periodicTimerCount++;
if (periodicTimerCount == 4) {
timer.cancel();
asyncEnd();
}
// The createPeriodicTimer function on the Zone binds the closures.
Expect.identical(forked, Zone.current);
});
Expect.identical(Zone.root, Zone.current);
}
main() {
testEmptyZoneSpecification();
}