tests/isolate/issue_21398_parent_isolate_test.dart

// Copyright (c) 2015, 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.

// Note: the following comment is used by test.dart to additionally compile the
// other isolate's code.
// OtherScripts=issue_21398_child_isolate.dart

import 'dart:isolate';
import 'dart:async';
import "package:expect/expect.dart";

class FromMainIsolate {
  String toString() => 'from main isolate';
  int get fld => 10;
}

funcChild(args) {
  var reply = args[1];
  var obj = args[0];
  Expect.isTrue(obj is FromMainIsolate);
  Expect.equals(10, obj.fld);
  reply.send(new FromMainIsolate());
}

main() {
  var receive1 = new ReceivePort();
  var receive2 = new ReceivePort();

  // First spawn an isolate using spawnURI and have it
  // send back a "non-literal" like object.
  Isolate.spawnUri(Uri.parse('issue_21398_child_isolate.dart'),
                   [],
                   [new FromMainIsolate(), receive1.sendPort]).catchError(
    (error) {
      Expect.isTrue(error is ArgumentError);
    }
  );
  Isolate.spawnUri(Uri.parse('issue_21398_child_isolate.dart'),
                   [],
                   receive1.sendPort).then(
    (isolate) {
      receive1.listen(
        (msg) {
          Expect.stringEquals(msg, "Invalid Argument(s).");
          receive1.close();
        },
        onError: (e) => print('$e')
      );
    }
  );

  // Now spawn an isolate using spawnFunction and send it a "non-literal"
  // like object and also have the child isolate send back a "non-literal"
  // like object.
  Isolate.spawn(funcChild, 
                [new FromMainIsolate(), receive2.sendPort]).then(
    (isolate) {
      receive2.listen(
        (msg) {
          Expect.isTrue(msg is FromMainIsolate);
          Expect.equals(10, msg.fld);
          receive2.close();
        },
        onError: (e) => print('$e')
      );
    }
  );
}