Robert Nystrom
d3904f5a54
Change-Id: I6ccbe1494165c2bda142ece13584c4738e3b43e6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425347 Commit-Queue: Lasse Nielsen <lrn@google.com> Reviewed-by: Lasse Nielsen <lrn@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
46 lines
1.1 KiB
Dart
46 lines
1.1 KiB
Dart
// Copyright (c) 2015, 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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// Tests the StreamView class.
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import "package:expect/expect.dart";
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import "dart:async";
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import "package:expect/async_helper.dart";
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main() {
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asyncStart();
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runTest().whenComplete(asyncEnd);
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}
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Future runTest() async {
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unreachable([a, b]) {
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throw "UNREACHABLE";
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}
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int tick = 0;
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ticker() {
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tick++;
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}
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asyncStart();
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// Is const constructor.
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Stream<int> s = const StreamView<int>(const Stream<int>.empty());
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Expect.isFalse(s is Stream<String>); // Respects type parameter.
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StreamSubscription<int> sub = s.listen(
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unreachable,
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onError: unreachable,
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onDone: ticker,
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);
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Expect.isFalse(sub is StreamSubscription<String>); // Type parameter in sub.
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Stream iterableStream = new Stream.fromIterable([1, 2, 3]);
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Expect.listEquals([1, 2, 3], await iterableStream.toList());
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asyncEnd();
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}
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Future flushMicrotasks() => new Future.delayed(Duration.zero);
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