blob: c86785be4db57f16e3c0ee8672d82fa471629470 [file] [log] [blame]
// Copyright (c) 2011, 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.
/// @assertion Stream<T> handleError(Function onError, {bool test(error)})
/// The onError callback must be of type void onError(error) or
/// void onError(error, StackTrace stackTrace). Depending on the function type
/// the the stream either invokes onError with or without a stack trace. The
/// stack trace argument might be null if the stream itself received an error
/// without stack trace.
/// @description Checks that stack trace from Future.error constructor is
/// propagated correctly to onError callback.
/// @author ilya
import "dart:async";
import "../../../Utils/expect.dart";
main() {
Error error = new Error();
StackTrace stackTrace;
var s;
try {
throw error;
} catch (e,st) {
stackTrace = st;
s = new Stream.fromFuture(new Future.error(e, st));
Stream s2 = s.handleError((e, st) {
Expect.identical(error, e);
Expect.identical(stackTrace, st);
s2.listen((_) {});