| /* |
| * Copyright (c) 2011, 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 StreamSubscription<T> listen(void onData(T event), |
| * {Function onError, void onDone(), bool cancelOnError}) |
| * Adds a subscription to this stream. |
| * On each data event from this stream, the subscriber's onData handler is |
| * called. |
| * @description Checks that on each data event from this stream, |
| * the subscriber's onData handler is called. |
| * @author kaigorodov |
| */ |
| library listen_A01_t01; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| void check<T>(Stream<T> s, Iterable<T> expectedData) { |
| List<T> sink = new List(); |
| asyncStart(); |
| s.listen( |
| (T event) { |
| sink.add(event); |
| }, |
| onDone: () { |
| Expect.listEquals(expectedData, sink); |
| asyncEnd(); |
| } |
| ); |
| } |
| |
| void test(CreateStreamFunction create) { |
| check(create([]), []); |
| check(create([1, 2, 3, 4]), [1, 2, 3, 4]); |
| check(create([null, "2", -3, 4.0, []]), [null, "2", -3, 4.0, []]); |
| } |