| // Copyright (c) 2017, 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. |
| |
| /// @assertion Future close() |
| /// NOTE: Writes to the [IOSink] may be buffered, and may not be flushed by a |
| /// call to close(). |
| /// @description Checks that target consumer cannot be closed while stream is |
| /// being added to the consumer. |
| /// @author iarkh@unipro.ru |
| |
| import "../../../Utils/expect.dart"; |
| import "dart:async"; |
| import "dart:io"; |
| |
| class MyStreamConsumer extends StreamConsumer<List<int>> { |
| Future addStream(Stream<List> stream) { |
| return new Future(() {}); |
| } |
| |
| Future close() { |
| return new Future(() {}); |
| } |
| } |
| |
| main() { |
| Stream<List<int>> stream = new Stream<List<int>>.fromIterable([ |
| [1, 2], |
| [12], |
| [3, 22] |
| ]); |
| StreamConsumer<List<int>> consumer = new MyStreamConsumer(); |
| IOSink sink = new IOSink(consumer); |
| sink.addStream(stream).then((x) { |
| new Future.delayed(new Duration(seconds: 3)).then((_) { |
| sink.close(); |
| }); |
| }); |
| Expect.throws(() { |
| sink.close(); |
| }, (e) => e is StateError); |
| } |