dart-sdk/tests/lib/async/run_zoned6_test.dart
Lasse R.H. Nielsen 8760283247 New implementation of runZoned.
A combination of `runZoned` and `runZonedGuarded` where only the latter allows an `onError` parameter,
and only that has a nullable return type.

Retains the `onError` parameter on `runZoned` for now because it's too breaking to remove it until packages have been migrated off of it.
It will be removed in a follow-up CL.

Change-Id: If0e86c8d14e13fa089c66f4af975aeacb2616cf6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/137302
Reviewed-by: Jake Macdonald <jakemac@google.com>
Reviewed-by: Nate Bosch <nbosch@google.com>
2020-03-25 00:24:33 +00:00

27 lines
757 B
Dart

// 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:expect/expect.dart";
import 'dart:async';
import 'package:async_helper/async_helper.dart';
main() {
asyncStart();
// Ensure that `runZoned`'s onError handles synchronous errors, and throwing
// in the error handler at that point (when it is a synchronous error) yields
// a synchronous error.
try {
runZonedGuarded(() {
throw 0;
}, (e, s) {
Expect.equals(0, e);
throw e; //#01 : ok
asyncEnd();
});
} catch (e) {
asyncEnd(); return; //# 01: continued
rethrow;
}
}