blob: 0daaea540aa9c67fb8ccc501852689499d448afd [file] [log] [blame]
// Copyright 2016 The Chromium 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_test/flutter_test.dart' hide TypeMatcher;
import 'package:flutter/widgets.dart';
import 'test_widgets.dart';
class StatefulWrapper extends StatefulWidget {
const StatefulWrapper({
Key key,
this.child,
}) : super(key: key);
final Widget child;
@override
StatefulWrapperState createState() => new StatefulWrapperState();
}
class StatefulWrapperState extends State<StatefulWrapper> {
void trigger() {
setState(() { /* no-op setState */ });
}
bool built = false;
@override
Widget build(BuildContext context) {
built = true;
return widget.child;
}
}
class Wrapper extends StatelessWidget {
const Wrapper({
Key key,
this.child,
}) : super(key: key);
final Widget child;
@override
Widget build(BuildContext context) {
return child;
}
}
void main() {
testWidgets('Calling setState on a widget that moves into a LayoutBuilder in the same frame', (WidgetTester tester) async {
StatefulWrapperState statefulWrapper;
final Widget inner = new Wrapper(
child: new StatefulWrapper(
key: new GlobalKey(),
child: new Container(),
),
);
await tester.pumpWidget(new FlipWidget(
left: new LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) {
return inner;
}),
right: inner,
));
statefulWrapper = tester.state(find.byType(StatefulWrapper));
expect(statefulWrapper.built, true);
statefulWrapper.built = false;
statefulWrapper.trigger();
flipStatefulWidget(tester);
await tester.pump();
expect(statefulWrapper.built, true);
statefulWrapper.built = false;
statefulWrapper.trigger();
flipStatefulWidget(tester);
await tester.pump();
expect(statefulWrapper.built, true);
statefulWrapper.built = false;
statefulWrapper.trigger();
flipStatefulWidget(tester);
await tester.pump();
expect(statefulWrapper.built, true);
statefulWrapper.built = false;
});
}