floitsch@google.com
dc9c5f42ed
Since this involved a breaking change I cleaned up more of the StreamTransformer API. This CL also deprecates the getAttachedStackTrace method. R=ajohnsen@google.com, lrn@google.com, nweiz@google.com, rnystrom@google.com Review URL: https://codereview.chromium.org//25354003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@28562 260f80e4-7a28-3924-810f-c04153c831b5
36 lines
1.2 KiB
Dart
36 lines
1.2 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:async_helper/async_helper.dart';
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import "package:expect/expect.dart";
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import 'dart:async';
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import 'catch_errors.dart';
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main() {
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asyncStart();
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var events = [];
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StreamController controller = new StreamController();
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Stream stream = controller.stream;
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// Test that the subscription of a stream is what counts. The error (2) runs
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// through the map-stream which goes through the nested `catchError` but
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// the nested `catchError` won't see the error.
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catchErrors(() {
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stream = stream.map((x) => x + 100);
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}).listen((x) { events.add(x); });
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stream
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.transform(new StreamTransformer.fromHandlers(
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handleError: (e, st, sink) { sink.add("error $e"); }))
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.listen((x) { events.add("stream $x"); },
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onDone: () {
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Expect.listEquals(["stream 101",
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"stream error 2",
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],
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events);
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asyncEnd();
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});
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controller.add(1);
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controller.addError(2);
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controller.close();
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}
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