tests/lib_2/isolate/spawn_function_custom_class_test.dart

// Copyright (c) 2012, 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.

// Create a user-defined class in a new isolate.
//
// Regression test for vm bug 2235: We were forgetting to finalize
// classes in new isolates started using the v2 api.

library spawn_tests;

import 'dart:isolate';
import 'package:unittest/unittest.dart';
import "remote_unittest_helper.dart";

class MyClass {
  final myVar = 'there';
  myFunc(msg) {
    return '$msg $myVar';
  }
}

isolateEntryPoint(args) {
  final reply = args[1];
  final msg = args[0];
  reply.send('re: ${new MyClass().myFunc(msg)}');
}

void main([args, port]) {
  if (testRemote(main, port)) {
    return;
  }

  test('message - reply chain', () async {
    final exitPort = ReceivePort();
    final replyPort = ReceivePort();

    final isolate = Isolate.spawn(isolateEntryPoint, ['hi', replyPort.sendPort],
        onExit: exitPort.sendPort);

    replyPort.listen((msg) {
      replyPort.close();
      expect(msg, equals('re: hi there'));
    });

    // Explicitly await spawned isolate exit to enforce main isolate not
    // completing (and the stand-alone runtime exiting) before the spawned
    // isolate is done.
    await exitPort.first;
  });
}