blob: 8831612e289f73708c8e270c0d944c9b4cc81cf9 [file] [log] [blame] [edit]
// 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 'package:flutter/scheduler.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
import 'common.dart';
final Set<String> interestingLabels = <String>{
'$Row',
'$TestRoot',
'$TestChildWidget',
'$Container',
};
void main() {
ZoneIgnoringTestBinding.ensureInitialized();
initTimelineTests();
test('Children of MultiChildRenderObjectElement show up in tracing', () async {
// We don't have expectations around the first frame because there's a race around
// the warm-up frame that we don't want to get involved in here.
await runFrame(() { runApp(const TestRoot()); });
await SchedulerBinding.instance.endOfFrame;
await fetchInterestingEvents(interestingLabels);
debugProfileBuildsEnabled = true;
await runFrame(() {
TestRoot.state.showRow();
});
expect(
await fetchInterestingEventNames(interestingLabels),
<String>['TestRoot', 'Row', 'TestChildWidget', 'Container', 'TestChildWidget', 'Container'],
);
debugProfileBuildsEnabled = false;
}, skip: isBrowser); // [intended] uses dart:isolate and io.
}
class TestRoot extends StatefulWidget {
const TestRoot({super.key});
static late TestRootState state;
@override
State<TestRoot> createState() => TestRootState();
}
class TestRootState extends State<TestRoot> {
@override
void initState() {
super.initState();
TestRoot.state = this;
}
bool _showRow = false;
void showRow() {
setState(() {
_showRow = true;
});
}
@override
Widget build(BuildContext context) {
return _showRow
? const Row(
children: <Widget>[
TestChildWidget(),
TestChildWidget(),
],
)
: Container();
}
}
class TestChildWidget extends StatelessWidget {
const TestChildWidget({super.key});
@override
Widget build(BuildContext context) {
return Container();
}
}