dart-sdk/tests/lib_2/async/schedule_microtask3_test.dart
Leaf Petersen b101a7d002 Add language versions to _2 test libraries
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Commit-Queue: Leaf Petersen <leafp@google.com>
2021-04-26 17:58:57 +00:00

43 lines
1,020 B
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.
// @dart = 2.9
library run_async_test;
import 'dart:async';
import 'package:async_helper/async_helper.dart';
import 'package:expect/expect.dart';
main() {
// Check that Timers don't run before the async callbacks.
bool timerCallbackExecuted = false;
asyncStart();
Timer.run(() {
timerCallbackExecuted = true;
asyncEnd();
});
scheduleMicrotask(() {
Expect.isFalse(timerCallbackExecuted);
});
scheduleMicrotask(() {
// Busy loop.
var sum = 1;
var sw = new Stopwatch()..start();
while (sw.elapsedMilliseconds < 5) {
sum++;
}
if (sum == 0) throw "bad"; // Just to use the result.
scheduleMicrotask(() {
Expect.isFalse(timerCallbackExecuted);
});
});
scheduleMicrotask(() {
Expect.isFalse(timerCallbackExecuted);
});
}