blob: 03a186d010492f626cc2c58263513e54c2bc583d [file] [log] [blame]
// Copyright (c) 2013, 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
import 'dart:io';
import 'package:expect/expect.dart';
test(int milliseconds) {
var watch = new Stopwatch();
watch.start();
sleep(new Duration(milliseconds: milliseconds));
watch.stop();
Expect.isTrue(watch.elapsedMilliseconds >= milliseconds);
}
main() {
test(0);
test(1);
test(10);
test(100);
bool sawError = false;
try {
sleep(new Duration(milliseconds: -1));
Expect.fail('Should not reach here.');
} on ArgumentError catch (e) {
sawError = true;
}
Expect.isTrue(sawError);
}