Derek Xu
049ca4100f
TEST=pkg/dds/test/timer_event_history_test Change-Id: Id1b867e5f582aca9d57c6d52978880bbbd889b27 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/411160 Reviewed-by: Ben Konyi <bkonyi@google.com> Commit-Queue: Derek Xu <derekx@google.com>
73 lines
2.3 KiB
Dart
73 lines
2.3 KiB
Dart
// Copyright (c) 2025, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:async';
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import 'dart:io' show sleep;
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import 'package:dds_service_extensions/dds_service_extensions.dart';
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import 'package:test/test.dart';
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import 'package:vm_service/vm_service.dart';
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import 'common/service_test_common.dart';
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import 'common/test_helper.dart';
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Future<void> testeeMain() async {
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final completer = Completer<void>();
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late final Timer t;
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t = Timer(
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const Duration(milliseconds: 100),
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() {
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t.cancel();
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completer.complete();
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},
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);
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// Sleep for 201 ms to force [t] to fire at least 100 ms late. This allows us
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// to expect to receive at least one 'TimerSignificantlyOverdue' event in
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// [tests] below, because a 'TimerSignificantlyOverdue' event should be fired
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// whenever a timer is identified to be at least 100 ms overdue.
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sleep(const Duration(milliseconds: 201));
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await completer.future;
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}
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final tests = <IsolateTest>[
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hasPausedAtStart,
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(VmService service, IsolateRef isolateRef) async {
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final completer = Completer<void>();
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service.onTimerEvent.listen((event) async {
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expect(event.kind, 'TimerSignificantlyOverdue');
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await service.streamCancel(EventStreams.kTimer);
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completer.complete();
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});
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await service.streamListen(EventStreams.kTimer);
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resumeIsolate(service, isolateRef);
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await completer.future;
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},
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(VmService service, _) async {
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// Confirm that all events in the history buffer get sent on a stream
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// returned by [service.onTimerEventWithHistory].
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final completer = Completer<void>();
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late final StreamSubscription subscription;
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subscription = service.onTimerEventWithHistory.listen((event) async {
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expect(event.kind, 'TimerSignificantlyOverdue');
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await subscription.cancel();
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completer.complete();
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});
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await service.streamListen(EventStreams.kTimer);
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await completer.future;
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}
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];
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void main([args = const <String>[]]) => runIsolateTests(
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args,
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tests,
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'timer_event_history_test.dart',
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testeeConcurrent: testeeMain,
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pauseOnStart: true,
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pauseOnExit: true,
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);
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