LibTest/io/sleep/sleep_A01_t01.dart

// Copyright (c) 2017, 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

/// @assertion void sleep(Duration duration)
/// Sleep for the duration specified in [duration].
/// @description Checks that process sleeps for the [duration] milliseconds.
/// @author iarkh@unipro.ru
/// @issue 25757

import "../../../Utils/expect.dart";
import "dart:io";

test(int dur) {
  Stopwatch sw = new Stopwatch();
  sw.start();
  sleep(new Duration(milliseconds: dur));
  sw.stop();

  print("Acually slept for: milliseconds: ${sw.elapsedMilliseconds}, " +
      "microseconds: ${sw.elapsedMicroseconds}");
  Expect.isTrue(sw.elapsedMilliseconds >= dur - 1);
}

main() {
  test(5);
  test(100);
  test(100);
  test(100);
  test(1000);
  test(1000);
  test(1000);
  test(0);
}