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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 // Regression test for http://dartbug.com/7964 | 5 // Regression test for http://dartbug.com/7964 |
6 | 6 |
7 library first_regression_test; | 7 library first_regression_test; |
8 import 'dart:async'; | 8 import 'dart:async'; |
9 import '../../../pkg/unittest/lib/unittest.dart'; | 9 import '../../../pkg/unittest/lib/unittest.dart'; |
10 | 10 |
11 class DoubleTransformer<T> extends StreamEventTransformer<T, T> { | 11 class DoubleTransformer<T> implements StreamTransformer<T, T> { |
12 void handleData(T data, EventSink<T> sink) { | 12 Stream<T> bind(Stream<T> stream) { |
13 sink.add(data); | 13 var transformer = new StreamTransformer<T, T>.fromHandlers( |
14 sink.add(data); | 14 handleData: (T data, EventSink<T> sink) { |
| 15 sink.add(data); |
| 16 sink.add(data); |
| 17 }); |
| 18 return transformer.bind(stream); |
15 } | 19 } |
16 } | 20 } |
17 | 21 |
18 main() { | 22 main() { |
19 test("Double event before first", () { | 23 test("Double event before first", () { |
20 // This should not crash. Did crash by trying to complete future more | 24 // This should not crash. Did crash by trying to complete future more |
21 // than once. | 25 // than once. |
22 new Stream.fromIterable([1, 2]) | 26 new Stream.fromIterable([1, 2]) |
23 .transform(new DoubleTransformer()) | 27 .transform(new DoubleTransformer()) |
24 .first | 28 .first |
25 .then(expectAsync1((e) {})); | 29 .then(expectAsync1((e) {})); |
26 }); | 30 }); |
27 } | 31 } |
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