| // 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 abstract Stream<T> bind(Stream<S> stream) |
| /// @description Checks that transformer.bind(stream) is equivalent to |
| /// stream.transform(transformer) |
| /// @author ilya |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Stream s = new Stream.fromIterable([1, 2, 3, 4, 5]); |
| |
| // odd numbers as data events, even numbers as error events |
| s = s.map((x) => x.isOdd ? x : throw x); |
| |
| StreamTransformer tr = |
| new StreamTransformer.fromHandlers(handleData: (x, sink) { |
| sink.add(x); |
| }, handleError: (x, st, sink) { |
| sink.add(x); |
| }, handleDone: (sink) { |
| sink.add(6); |
| sink.add(7); |
| sink.close(); |
| }); |
| |
| asyncStart(); |
| tr.bind(s).toList().then((x) { |
| Expect.listEquals([1, 2, 3, 4, 5, 6, 7], x); |
| asyncEnd(); |
| }); |
| } |