| // Copyright (c) 2016, 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 Stream timeout(Duration timeLimit, |
| /// {void onTimeout(EventSink sink)}) |
| /// Creates a new stream with the same events as this stream. |
| /// |
| /// Whenever more than timeLimit passes between two events from this stream, the |
| /// onTimeout function is called. |
| /// |
| /// The onTimeout function is called with one argument: an EventSink that allows |
| /// putting events into the returned stream. This EventSink is only valid during |
| /// the call to onTimeout. |
| /// |
| /// @description Check that if more than timeLimit passes between two events |
| /// from this stream, the onTimeout function is called with one argument: an |
| /// EventSink that allows putting events into the returned stream. |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| List<Completer> cl = [new Completer(), new Completer(), new Completer()]; |
| List<int> cv = [1, 2, 3]; |
| int i = 0; |
| |
| void ontimeout(EventSink sink) { |
| sink.add(cv[1]); |
| } |
| |
| main() { |
| Stream s1 = new Stream.fromIterable( |
| [cl[0].future, cl[1].future, cl[2].future]); |
| Stream s2 = s1.asyncMap((var event) => event); |
| Stream s3 = s2.timeout(new Duration(microseconds: 1), |
| onTimeout: ontimeout); |
| |
| asyncStart(); |
| s3.listen((var event) { |
| Expect.isTrue(i < 2); |
| Expect.equals(cv[i++], event); |
| if (i == 2) { |
| asyncEnd(); |
| } |
| }, onError: (error) { |
| Expect.fail("onError($error) called unexpectedly"); |
| }, onDone: () { |
| Expect.fail("Listen was ended on timeout"); |
| }); |
| |
| cl[0].complete(cv[0]); |
| cl[2].complete(cv[2]); |
| } |