Files
sdk/tests/lib_2/isolate/timer_isolate_test.dart
T
Sigmund Cherem fb29d0e96d Move async_minitest to package:async_helper.
This allows to break a circular dependency between package:expect and

package:async_helper, which will simplify the support for modular tests using
package:modular_test.
Change-Id: Ie48723d3f35d51a8fbe622e0158450e8104fe3f5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/102140
Reviewed-by: Johnni Winther <johnniwinther@google.com>
2019-05-10 19:43:58 +00:00

39 lines
1.1 KiB
Dart

// 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.
library multiple_timer_test;
import 'dart:isolate';
import 'dart:async';
import 'package:async_helper/async_minitest.dart';
const Duration TIMEOUT = const Duration(milliseconds: 100);
// 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;
createTimer(replyTo) {
new Timer(TIMEOUT, () {
replyTo.send("timer_fired");
});
}
main() {
test("timer in isolate", () {
Stopwatch stopwatch = new Stopwatch();
ReceivePort port = new ReceivePort();
port.first.then(expectAsync((msg) {
expect("timer_fired", msg);
expect(stopwatch.elapsedMilliseconds + safetyMargin,
greaterThanOrEqualTo(TIMEOUT.inMilliseconds));
}));
stopwatch.start();
var remote = Isolate.spawn(createTimer, port.sendPort);
});
}