runtime/tests/vm/dart/isolate_exit_unsendable_test.dart

// Copyright (c) 2023, 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 'dart:isolate';

import 'package:expect/async_helper.dart';
import 'package:expect/expect.dart';

@pragma('vm:isolate-unsendable')
class Locked {}

class ExtendsLocked extends Locked {}

class ImplementsLocked implements Locked {}

main() async {
  asyncStart();

  final rpExit = ReceivePort();
  final rpError = RawReceivePort((e) {
    Expect.fail('Spawned isolated failed with $e');
  });

  final rp = RawReceivePort((e) {
    Expect.fail('Received unexpected $e, no objects should have arrived');
  });
  await Isolate.spawn((sendPort) {
    for (final pairFunctionName in [
      [Locked.new, "Locked"],
      [ExtendsLocked.new, "ExtendsLocked"],
      [ImplementsLocked.new, "ImplementsLocked"]
    ]) {
      Expect.throws(() {
        Isolate.exit(sendPort, (pairFunctionName[0] as Function)());
      }, (e) {
        return e is ArgumentError &&
            e
                .toString()
                .contains(RegExp("unsendable object .+${pairFunctionName[1]}"));
      });
    }
  }, rp.sendPort, onError: rpError.sendPort, onExit: rpExit.sendPort);
  await rpExit.first;
  rpError.close();
  rp.close();
  asyncEnd();
}