mirror of
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b449e99118
With nested `async*` functions, the state of whether we're in an `async*` function should be restored as the previous state after leaving the nested function, instead of as `false`. Fixes #55397. Change-Id: I5f2a964847ae34e98584f3adad6df7857b81e474 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/361600 Commit-Queue: Ömer Ağacan <omersa@google.com> Reviewed-by: Slava Egorov <vegorov@google.com>
32 lines
735 B
Dart
32 lines
735 B
Dart
// Copyright (c) 2024, 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 "package:async_helper/async_helper.dart";
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import "package:expect/expect.dart";
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Stream<String> stream() async* {
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yield 'a';
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yield 'b';
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}
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Stream<String> expandedStream() async* {
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final expanded = stream().asyncExpand((s) async* {
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yield 'before';
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yield s;
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yield 'after';
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});
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yield* expanded;
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}
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test() async {
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Expect.listEquals(['before', 'a', 'after', 'before', 'b', 'after'],
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await expandedStream().toList());
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}
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void main() {
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asyncStart();
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test().then((_) => asyncEnd());
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}
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