Files
sdk/tests/lib_2/html/async_cancellingisolate.dart
T
Terry Lucas 213830e122 Migrated Block 188 to Dart 2.0
R=bkonyi@google.com

Change-Id: I3a450b04becaef007cc81fda1dbca1fda58b3d19
Reviewed-on: https://dart-review.googlesource.com/12361
Commit-Queue: Terry Lucas <terry@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>
2017-10-11 14:42:22 +00:00

32 lines
1012 B
Dart

library async_cancellingisolate;
import 'dart:async';
import 'package:unittest/unittest.dart';
main(message, replyTo) {
var command = message.first;
expect(command, 'START');
var shot = false;
var oneshot;
var periodic;
periodic = new Timer.periodic(const Duration(milliseconds: 10), (timer) {
expect(shot, isFalse);
shot = true;
expect(timer, same(periodic));
periodic.cancel();
oneshot.cancel();
// Wait some more time to be sure callbacks won't be invoked any
// more.
new Timer(const Duration(milliseconds: 50), () {
replyTo.send('DONE');
});
});
// We launch the oneshot timer after the periodic timer. Otherwise a
// (very long) context switch could make this test flaky: assume the
// oneshot timer is created first and then there is a 30ms context switch.
// when the periodic timer is scheduled it would execute after the oneshot.
oneshot = new Timer(const Duration(milliseconds: 30), () {
fail('Should never be invoked');
});
}