| // Copyright (c) 2018, 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 addStream(Stream<List<int>> stream) |
| /// @description Checks that the [stream] cannot be added if another stream is |
| /// being added right now. |
| /// @author iarkh@unipro.ru |
| |
| |
| import "../../../Utils/expect.dart"; |
| import "dart:async"; |
| import "dart:io"; |
| |
| Stream<List<int>> stream1 = new Stream<List<int>>.fromIterable([[1, 2], [12], [3, 22]]); |
| Stream<List<int>> stream2 = new Stream<List<int>>.fromIterable([[0]]); |
| |
| class MyStreamConsumer extends StreamConsumer<List<int>> { |
| Future addStream(Stream<List<int>> stream) { return new Future(() {}); } |
| Future close() { return new Future(() {}); } |
| } |
| |
| main() { |
| StreamConsumer<List<int>> consumer = new MyStreamConsumer(); |
| IOSink sink = new IOSink(consumer); |
| sink.addStream(stream1).then((x) { |
| new Future.delayed(new Duration(seconds: 3)).then((_) { sink.close(); }); |
| }); |
| Expect.throws(() { sink.addStream(stream2); }, (e) => e is StateError); |
| } |