Robert Nystrom
d3904f5a54
Change-Id: I6ccbe1494165c2bda142ece13584c4738e3b43e6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425347 Commit-Queue: Lasse Nielsen <lrn@google.com> Reviewed-by: Lasse Nielsen <lrn@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
46 lines
1.2 KiB
Dart
46 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 'dart:async';
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import 'package:expect/async_helper.dart';
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import 'package:expect/expect.dart';
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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) {
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events.add(x);
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});
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stream
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.transform(
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new StreamTransformer.fromHandlers(
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handleError: (e, st, sink) {
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sink.add("error $e");
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},
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),
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)
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.listen(
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(x) {
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events.add("stream $x");
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},
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onDone: () {
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Expect.listEquals(["stream 101", "stream error 2"], events);
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asyncEnd();
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},
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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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