The following test does not result in any exceptions even though it
is accessing a closed port.

// 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.

// PackageRoot=packages/

library package_isolate_test;
import 'package:shared.dart' as shared;
import 'dart:isolate';
import '../../../pkg/unittest/lib/unittest.dart';

expectResponse() {
  port.receive(expectAsync2((msg, r) {
    expect('isolate', msg);
    expect('main', shared.output);
    port.close();
    print("In expectResponse reply $msg");
    print("Value of port in reply = ${port.hashCode}");
  }));
}

void main() {
  test("package in spawnFunction()", () {
    print("Set up expectResponse spawnFunction");
    try {
      print("Value of port1 = ${port.hashCode}");
      expectResponse();
      shared.output = 'main';
      var sendPort = spawnFunction(isolate_main);
      sendPort.send("sendPort", port.toSendPort());
     } catch (e, trace) {
      print(e);
      print(trace);
     }
  });
  
  test("package in spawnUri() of sibling file", () {
    print("Set up expectResponse spawnUri1");
    try {
      print("Value of port1 = ${port.hashCode}");
      expectResponse();
      shared.output = 'main';
      var sendPort = spawnUri('sibling_isolate.dart');
      print("Value of port2 = ${port.hashCode}");
      print("Value of send port = ${port.toSendPort()}");
      sendPort.send('sendPort', port.toSendPort());
     } catch (e, trace) {
      print(e);
      print(trace);
     }
  });

  test("package in spawnUri() of file in folder", () {
    print("Set up expectResponse spawnUri2");
    try {
      expectResponse();
      shared.output = 'main';
      var sendPort = spawnUri('test_folder/folder_isolate.dart');
      sendPort.send('sendPort', port.toSendPort());
     } catch (e, trace) {
      print(e);
      print(trace);
     }
  });

  print("Done setting up xpectResponse");
}

void isolate_main() {
  shared.output = 'isolate';
  port.receive((msg, replyTo) {
    replyTo.send(shared.output);
  });
}