blob: 220ac051f3350bff30ae5131f79436f474fa529f [file] [log] [blame]
// 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.
library timer_test;
import 'dart:async';
import 'package:async_helper/async_minitest.dart';
const int STARTTIMEOUT = 1050;
const int DECREASE = 200;
const int ITERATIONS = 5;
Stopwatch stopwatch = new Stopwatch();
int timeout;
int iteration;
// Some browsers (Firefox and IE so far) can trigger too early. Add a safety
// margin. We use identical(1, 1.0) as an easy way to know if the test is
// compiled by dart2js.
int get safetyMargin => identical(1, 1.0) ? 100 : 0;
void timeoutHandler() {
expect(stopwatch.elapsedMilliseconds + safetyMargin,
greaterThanOrEqualTo(timeout));
if (iteration < ITERATIONS) {
iteration++;
timeout = timeout - DECREASE;
Duration duration = new Duration(milliseconds: timeout);
stopwatch.reset();
new Timer(duration, expectAsync(timeoutHandler));
}
}
main() {
test("timeout test", () {
iteration = 0;
timeout = STARTTIMEOUT;
Duration duration = new Duration(milliseconds: timeout);
stopwatch.start();
new Timer(duration, expectAsync(timeoutHandler));
});
}