dart-sdk/tests/lib/async/zone_future_schedule_microtask_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

66 lines
1.7 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 'dart:async';
import 'package:async_helper/async_helper.dart';
import 'catch_errors.dart';
main() {
asyncStart();
Completer done = new Completer();
// Make sure that the zones use the scheduleMicrotask of their zones.
int scheduleMicrotaskCount = 0;
late Completer completer;
late Completer completer2;
late Future future;
late Future future2;
runZonedScheduleMicrotask(() {
completer = new Completer();
completer.complete(499);
completer2 = new Completer.sync();
completer2.complete(-499);
future = new Future.value(42);
future2 = new Future.error(11);
}, onScheduleMicrotask: (f) {
scheduleMicrotaskCount++;
scheduleMicrotask(f);
});
int openCallbackCount = 0;
openCallbackCount++;
completer.future.then((x) {
Expect.equals(499, x);
openCallbackCount--;
if (openCallbackCount == 0) done.complete();
});
openCallbackCount++;
completer2.future.then((x) {
Expect.equals(-499, x);
openCallbackCount--;
if (openCallbackCount == 0) done.complete();
});
openCallbackCount++;
future.then((x) {
Expect.equals(42, x);
openCallbackCount--;
if (openCallbackCount == 0) done.complete();
});
openCallbackCount++;
future2.catchError((x) {
Expect.equals(11, x);
openCallbackCount--;
if (openCallbackCount == 0) done.complete();
});
done.future.whenComplete(() {
Expect.equals(4, scheduleMicrotaskCount);
asyncEnd();
});
}