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b101a7d002
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>
39 lines
1 KiB
Dart
39 lines
1 KiB
Dart
// Copyright (c) 2013, 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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// @dart = 2.9
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import "package:expect/expect.dart";
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import "package:async_helper/async_helper.dart";
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import 'dart:async';
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main() {
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asyncStart(2);
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() async {
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var it = new StreamIterator(new Stream.fromIterable([]));
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Expect.isFalse(await it.moveNext());
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Future nullFuture;
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Future falseFuture;
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runZoned(() {
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nullFuture = (new StreamController()..stream.listen(null).cancel()).done;
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falseFuture = it.moveNext();
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}, zoneSpecification: new ZoneSpecification(scheduleMicrotask:
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(Zone self, ZoneDelegate parent, Zone zone, void f()) {
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Expect.fail("Should not be called");
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}));
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nullFuture.then((value) {
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Expect.isNull(value);
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asyncEnd();
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});
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falseFuture.then((value) {
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Expect.isFalse(value);
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asyncEnd();
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});
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}();
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}
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