| /* |
| * 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 factory StreamTransformer(StreamSubscription<T> |
| * transformer(Stream<S> stream, bool cancelOnError)) |
| * Creates a StreamTransformer. |
| * |
| * The result of invoking the transformer closure is a StreamSubscription. |
| * The bound stream-transformer (created by the bind method above) then |
| * sets the handlers it received as part of the listen call. |
| * |
| * @description Checks that handlers of StreamSubscription instance returned |
| * by transformer are reset to handlers of bound stream subscription. |
| * @author ilya |
| */ |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| StreamController c = new StreamController(); |
| c.addError(1); |
| c.add(2); |
| |
| StreamTransformer tr = new StreamTransformer( |
| (Stream stream, bool cancelOnError) { |
| return stream.listen( |
| (x) { |
| Expect.fail('unexpected call to OnData'); |
| }, |
| onError:(x) { |
| Expect.fail('unexpected call to OnError'); |
| }, |
| onDone:() { |
| Expect.fail('unexpected call to OnDone'); |
| } |
| ); |
| } |
| ); |
| |
| asyncMultiStart(3); |
| |
| c.stream.transform(tr).listen( |
| (x) { |
| asyncEnd(); |
| }, |
| onError:(x) { |
| asyncEnd(); |
| }, |
| onDone:() { |
| asyncEnd(); |
| } |
| ); |
| |
| c.close(); |
| } |