| // 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. |
| |
| import 'package:async_helper/async_helper.dart'; |
| import "package:expect/expect.dart"; |
| import 'dart:async'; |
| import 'catch_errors.dart'; |
| |
| main() { |
| asyncStart(); |
| Completer done = new Completer(); |
| |
| var events = []; |
| StreamController controller; |
| Stream stream; |
| // Test that the first listen on a `asBroadcastStream` determines the |
| // zone the subscription lives in. The inner listen happens first, and |
| // the outer listener must not see the error since it would cross a |
| // zone boundary. It is therefore given to the inner `catchErrors`. |
| catchErrors(() { |
| catchErrors(() { |
| controller = new StreamController(); |
| stream = controller.stream |
| .map((x) { |
| events.add("map $x"); |
| return x + 100; |
| }) |
| .asBroadcastStream(); |
| stream |
| .transform(new StreamTransformer.fromHandlers( |
| handleError: (e, st, sink) { sink.add("error $e"); })) |
| .listen((x) { events.add("stream $x"); }); |
| scheduleMicrotask(() { |
| controller.add(1); |
| // Errors are not allowed to traverse boundaries, but in this case the |
| // first listener of the broadcast stream is in the same error-zone. So |
| // this should work. |
| controller.addError(2); |
| controller.close(); |
| }); |
| }).listen((x) { |
| events.add(x); |
| if (x == 2) done.complete(true); |
| }) |
| .asFuture().then((_) { Expect.fail("Unexpected callback"); }); |
| stream.listen((x) { events.add("stream2 $x"); }); |
| }).listen((x) { events.add("outer: $x"); }, |
| onDone: () { Expect.fail("Unexpected callback"); }); |
| |
| done.future.whenComplete(() { |
| // Give handlers time to run. |
| Timer.run(() { |
| Expect.listEquals(["map 1", |
| "stream 101", |
| "stream2 101", |
| "stream error 2", |
| 2, // Caught by the inner `catchErrors`. |
| ], |
| events); |
| asyncEnd(); |
| }); |
| }); |
| } |