| // 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(); |
| Completer done = new Completer(); |
| |
| var events = []; |
| StreamController controller; |
| Stream stream; |
| // Test that errors are not traversing zone boundaries. |
| // Note that the first listener of `asBroadcastStream` determines in which |
| // zone the subscription lives. |
| catchErrors(() { |
| catchErrors(() { |
| controller = new StreamController(); |
| |
| // Assign to "global" `stream`. |
| stream = controller.stream.map((x) { |
| events.add("map $x"); |
| return x + 100; |
| }).transform( |
| new StreamTransformer.fromHandlers(handleError: (e, st, sink) { |
| sink.add("error $e"); |
| })).asBroadcastStream(); |
| |
| // Listen to `stream` in the inner zone. |
| stream.listen((x) { |
| events.add("stream $x"); |
| }); |
| }) |
| .listen((x) { |
| events.add(x); |
| }) |
| .asFuture() |
| .then((_) { |
| Expect.fail("Unexpected callback"); |
| }); |
| |
| // Listen to `stream` in the outer zone. |
| stream.listen((x) { |
| events.add("stream2 $x"); |
| }); |
| |
| // Feed the controller from the outer zone. |
| controller.add(1); |
| // `addError` does not count as zone-traversal. It should be caught by |
| // the inner error handler. |
| controller.addError("inner error"); |
| new Future.error("caught by outer"); |
| controller.close(); |
| }).listen((x) { |
| events.add("outer: $x"); |
| if (x == "caught by outer") done.complete(true); |
| }, 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 inner error", |
| "stream2 error inner error", |
| "outer: caught by outer", |
| ], events); |
| asyncEnd(); |
| }); |
| }); |
| } |