LibTest/isolate/ReceivePort/any_A01_t01.dart

// Copyright (c) 2011, 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.

/// @assertion Future<bool> any(bool test(T element))
/// Checks whether test accepts any element provided by this stream.
/// Completes the Future when the answer is known.
/// @description Checks that correct answer is passed to the future.
/// @author kaigorodov

import "dart:isolate";
import "../../../Utils/expect.dart";
import "IsolateStream.dart" as IsolateStream;

check(Iterable<int?> data, bool test(var element), bool expected) {
  ReceivePort s = IsolateStream.fromIterable(data);
  asyncStart();
  s.any(test).then((bool actual) {
    Expect.equals(expected, actual);
    asyncEnd();
  });
}

main() {
  check([], (element) => true, false);
  check([1, 2, 3], (element) => element == null, false);
  check([1, 2, 3, null], (element) => element == null, true);
  check(
      new Iterable.generate(0, (index) => index * 2), (element) => true, false);
  check(new Iterable.generate(10, (index) => index * 5),
      (element) => element == 30, true);
}