| /* |
| * 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 StreamSubscription<T> listen(void onData(T event), |
| * {Function onError, void onDone(), bool cancelOnError}) |
| * The onError callback must be of type void onError(error) or |
| * void onError(error, StackTrace stackTrace). If onError accepts two |
| * arguments it is called with the stack trace (which could be null if the |
| * stream itself received an error without stack trace). Otherwise |
| * it is called with just the error object. |
| * @description Checks that stack trace is null if the stream received |
| * an error without stack trace. |
| * @author ilya |
| */ |
| |
| import "dart:async"; |
| import "../../../Utils/async_utils.dart"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| var error = new Error(); |
| var s = new Stream.fromFuture(new Future.error(error)); |
| |
| asyncStart(); |
| |
| s.listen((_) { |
| Expect.fail('unexpected call to onData'); |
| }, onError: (e, st) { |
| Expect.identical(error, e); |
| Expect.isNull(st); |
| asyncEnd(); |
| }); |
| } |