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
60 lines
2.0 KiB
Dart
60 lines
2.0 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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Completer done = new Completer();
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var events = [];
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StreamController controller;
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Stream stream;
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// Test `StreamController.broadcast` streams. Note that the nested listener
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// doesn't see the error, but the outer one does.
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catchErrors(() {
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catchErrors(() {
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controller = new StreamController.broadcast();
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controller.stream
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.map((x) {
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events.add("map $x");
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return x + 100;
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})
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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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}).listen((x) { events.add(x); })
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.asFuture().then((_) { Expect.fail("Unexpected callback"); });
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controller.stream.listen((x) { events.add("stream2 $x"); },
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onError: (x) { events.add("stream2 error $x"); });
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controller.add(1);
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// Errors are not allowed to traverse boundaries, but in this case the
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// first listener of the broadcast stream is in the same error-zone. So
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// this should work.
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controller.addError(2);
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controller.close();
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}).listen((x) {
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events.add("outer: $x");
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if (x == 2) done.complete(true);
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},
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onDone: () { Expect.fail("Unexpected callback"); });
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done.future.whenComplete(() {
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// Give handlers time to run.
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Timer.run(() {
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Expect.listEquals(["map 1",
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"stream 101",
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"stream2 1",
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"stream2 error 2",
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"outer: 2",
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],
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events);
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asyncEnd();
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});
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});
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}
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