Lasse R.H. Nielsen
f625a721eb
Fixes #30814. Bug: http://dartbug.com/30814 Change-Id: I882a5a8185a5415fd08aa005607c3469d400ba29 Reviewed-on: https://dart-review.googlesource.com/7265 Reviewed-by: Peter von der Ahé <ahe@google.com>
44 lines
1.1 KiB
Dart
44 lines
1.1 KiB
Dart
// Copyright (c) 2016, 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 "dart:async";
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import "package:expect/expect.dart";
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import "package:async_helper/async_helper.dart";
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// Regression test for http://dartbug.com/27205
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// If a yield-star completes while the stream is paused, it didn't resume.
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main() {
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asyncTest(() {
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var c = new Completer();
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var s = yieldStream(mkStream());
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var sub;
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sub = s.listen((v) {
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sub.pause();
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print(v);
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Timer.run(sub.resume);
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}, onDone: () {
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print("DONE");
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c.complete(null);
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});
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return c.future;
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});
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}
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Stream yieldStream(Stream s) async* {
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yield* s;
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}
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Stream mkStream() {
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var s = new StreamController(sync: true);
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// The close event has to be sent and received between
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// the pause and resume above.
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// Using a sync controller and a Timer.run(sub.resume) ensures this.
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Timer.run(() {
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s.add("event");
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s.close();
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});
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return s.stream;
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}
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