Robert Nystrom
a2b556b937
Change-Id: Ia5c41dda6503e1fbb8cc6099835d07588425e2ba Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128310 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
43 lines
1.1 KiB
Dart
43 lines
1.1 KiB
Dart
// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
// Tests the StreamView class.
|
|
|
|
import "package:expect/expect.dart";
|
|
import "dart:async";
|
|
import "package:async_helper/async_helper.dart";
|
|
|
|
main() {
|
|
asyncStart();
|
|
runTest().whenComplete(asyncEnd);
|
|
}
|
|
|
|
Future runTest() async {
|
|
unreachable([a, b]) {
|
|
throw "UNREACHABLE";
|
|
}
|
|
|
|
int tick = 0;
|
|
ticker() {
|
|
tick++;
|
|
}
|
|
|
|
asyncStart();
|
|
|
|
// Is const constructor.
|
|
Stream<int> s = const StreamView<int>(const Stream<int>.empty());
|
|
|
|
Expect.isFalse(s is Stream<String>); // Respects type parameter.
|
|
StreamSubscription<int> sub =
|
|
s.listen(unreachable, onError: unreachable, onDone: ticker);
|
|
Expect.isFalse(sub is StreamSubscription<String>); // Type parameter in sub.
|
|
|
|
Stream iterableStream = new Stream.fromIterable([1, 2, 3]);
|
|
Expect.listEquals([1, 2, 3], await iterableStream.toList());
|
|
|
|
asyncEnd();
|
|
}
|
|
|
|
Future flushMicrotasks() => new Future.delayed(Duration.zero);
|