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6c86fc44a6
This reverts commit212d5e3a31. This reapplies commit3688a4723c. CoreLibraryReviewExempt: Refactoring and relanding. Change-Id: I9b52ef4073bfff50699919f8a5b85e5ff66d0c3b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/258929 Reviewed-by: Nate Bosch <nbosch@google.com> Commit-Queue: Nate Bosch <nbosch@google.com> Auto-Submit: Lasse Nielsen <lrn@google.com>
31 lines
1 KiB
Dart
31 lines
1 KiB
Dart
// Copyright (c) 2022, 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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// Regression test for http://dartbug.com/48493
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//
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// The `Completer.complete` method, given an already completed `_Future`
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// with a value result, will complete the `Completer.future` synchronously.
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import 'package:async_helper/async_helper.dart';
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import "package:expect/expect.dart";
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import 'dart:async';
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void main() async {
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asyncStart();
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var completer = Completer<int>(); // Not synchronous.
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var future = Future<int>.value(4);
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await future; // Ensure future completed.
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bool thenRun = false;
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completer.future.then((_) {
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thenRun = true;
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});
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Expect.isFalse(thenRun, "Sanity check");
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completer.complete(future);
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Expect.isFalse(thenRun, "Ran early"); // Bug would cause this to fail.
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await Future(() {}); // Await timer, all microtasks completed.
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Expect.isTrue(thenRun, "Did not run as microtask");
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asyncEnd();
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}
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