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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:developer' as developer;
import 'dart:isolate' as isolate;
import 'package:flutter/foundation.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:vm_service/vm_service.dart';
import 'package:vm_service/vm_service_io.dart';
export 'package:vm_service/vm_service.dart' show TimelineEvent;
late String isolateId;
late VmService _vmService;
void initTimelineTests() {
setUpAll(() async {
final developer.ServiceProtocolInfo info = await developer.Service.getInfo();
if (info.serverUri == null) {
fail('This test _must_ be run with --enable-vmservice.');
}
_vmService = await vmServiceConnectUri('ws://localhost:${info.serverUri!.port}${info.serverUri!.path}ws');
await _vmService.setVMTimelineFlags(<String>['Dart']);
isolateId = developer.Service.getIsolateId(isolate.Isolate.current)!;
});
}
Future<List<TimelineEvent>> fetchTimelineEvents() async {
final Timeline timeline = await _vmService.getVMTimeline();
await _vmService.clearVMTimeline();
return timeline.traceEvents!;
}
Future<List<TimelineEvent>> fetchInterestingEvents(Set<String> interestingLabels) async {
return (await fetchTimelineEvents()).where((TimelineEvent event) {
return interestingLabels.contains(event.json!['name'])
&& event.json!['ph'] == 'B'; // "Begin" mark of events, vs E which is for the "End" mark of events.
}).toList();
}
String eventToName(TimelineEvent event) => event.json!['name'] as String;
Future<List<String>> fetchInterestingEventNames(Set<String> interestingLabels) async {
return (await fetchInterestingEvents(interestingLabels)).map<String>(eventToName).toList();
}
Future<void> runFrame(VoidCallback callback) {
final Future<void> result = SchedulerBinding.instance.endOfFrame; // schedules a frame
callback();
return result;
}
// This binding skips the zones tests. These tests were written before we
// verified zones properly, and they have been legacied-in to avoid having
// to refactor them.
//
// When creating new tests, avoid relying on this class.
class ZoneIgnoringTestBinding extends WidgetsFlutterBinding {
@override
void initInstances() {
super.initInstances();
_instance = this;
}
@override
bool debugCheckZone(String entryPoint) { return true; }
static ZoneIgnoringTestBinding get instance => BindingBase.checkInstance(_instance);
static ZoneIgnoringTestBinding? _instance;
static ZoneIgnoringTestBinding ensureInitialized() {
if (ZoneIgnoringTestBinding._instance == null) {
ZoneIgnoringTestBinding();
}
return ZoneIgnoringTestBinding.instance;
}
}