tests/lib_2/async/run_zoned9_test.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.

// @dart = 2.9

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 but delegates
  // to the next runZoned when the handler returns false.
  bool sawInnerHandler = false;
  try {
    runZonedGuarded(() {
      runZonedGuarded(() {
        throw 0;
      }, (e, s) {
        Expect.equals(0, e);
        sawInnerHandler = true;
        throw e;
      });
    }, (e, s) {
      Expect.equals(0, e);
      Expect.isTrue(sawInnerHandler);
      // If we are waiting for an error, don't asyncEnd, but let it time out.
      throw e;  //# 01: ok
      asyncEnd();
    });
  } catch (e) {
    asyncEnd(); return;  //# 01: continued
    rethrow;
  }
}