// 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.

// @dart = 2.9

library TransferableTest;

import 'dart:async';
import 'dart:html';
import 'dart:typed_data';

import 'package:expect/minitest.dart';

var isByteBuffer = predicate((x) => x is ByteBuffer, 'is an ByteBuffer');

Future testTransferableTest() {
  final buffer = (new Float32List(3)).buffer;
  window.postMessage(
      {'id': 'transferable data', 'buffer': buffer}, '*', [buffer]);

  return window.onMessage.firstWhere((e) {
    return e.data is Map && e.data['id'] == 'transferable data';
  }).then((messageEvent) {
    expect(messageEvent.data['buffer'], isByteBuffer);
  });
}

main() async {
  if (Platform.supportsTypedData) {
    await testTransferableTest();
  }
}