// 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();
  var events = [];
  var controller = new StreamController();
  // Test that stream errors, as a result of bad user-code (`map`) are correctly
  // caught by `catchErrors`. Note that the values are added outside both
  // `catchErrors`, but since the `listen` happens in the most nested
  // `catchErrors` it is caught there.
  catchErrors(() {
    catchErrors(() {
      controller.stream.map((x) { throw x; }).listen((x) {
        // Should not happen.
        events.add("bad: $x");
      });
    }).listen((x) { events.add("caught: $x"); },
              onDone: () { events.add("done"); });
  }).listen((x) { events.add("outer: $x"); },
            onDone: () {
              Expect.listEquals(["caught: 1",
                                 "caught: 2",
                                 "caught: 3",
                                 "caught: 4",
                                 "done",
                                ],
                                events);
              asyncEnd();
            });
  [1, 2, 3, 4].forEach(controller.add);
  controller.close();
}