| // Copyright (c) 2013, 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. |
| |
| // @dart = 2.9 |
| |
| import 'package:async_helper/async_helper.dart'; |
| import "package:expect/expect.dart"; |
| import 'dart:async'; |
| import 'catch_errors.dart'; |
| |
| main() { |
| asyncStart(); |
| var events = []; |
| StreamController controller = new StreamController(); |
| Stream stream = controller.stream; |
| // Test that the subscription of a stream is what counts. The error (2) runs |
| // through the map-stream which goes through the nested `catchError` but |
| // the nested `catchError` won't see the error. |
| catchErrors(() { |
| stream = stream.map((x) => x + 100); |
| }).listen((x) { |
| events.add(x); |
| }); |
| stream |
| .transform(new StreamTransformer.fromHandlers(handleError: (e, st, sink) { |
| sink.add("error $e"); |
| })).listen((x) { |
| events.add("stream $x"); |
| }, onDone: () { |
| Expect.listEquals([ |
| "stream 101", |
| "stream error 2", |
| ], events); |
| asyncEnd(); |
| }); |
| controller.add(1); |
| controller.addError(2); |
| controller.close(); |
| } |