blob: 642dba8ce988f7323fc0ea5a99151c7f34e895e5 [file] [log] [blame]
// 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/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
class Item {
GlobalKey key1 = GlobalKey();
GlobalKey key2 = GlobalKey();
@override
String toString() => 'Item($key1, $key2)';
}
List<Item> items = <Item>[Item(), Item()];
class StatefulLeaf extends StatefulWidget {
const StatefulLeaf({ GlobalKey? key }) : super(key: key);
@override
StatefulLeafState createState() => StatefulLeafState();
}
class StatefulLeafState extends State<StatefulLeaf> {
void markNeedsBuild() { setState(() { }); }
@override
Widget build(BuildContext context) => const Text('leaf', textDirection: TextDirection.ltr);
}
class KeyedWrapper extends StatelessWidget {
const KeyedWrapper(this.key1, this.key2, { Key? key }) : super(key: key);
final Key key1;
final GlobalKey key2;
@override
Widget build(BuildContext context) {
return Container(
key: key1,
child: StatefulLeaf(
key: key2,
),
);
}
}
Widget builder() {
return Column(
children: <Widget>[
KeyedWrapper(items[1].key1, items[1].key2),
KeyedWrapper(items[0].key1, items[0].key2),
],
);
}
void main() {
testWidgets('moving subtrees with global keys - smoketest', (WidgetTester tester) async {
await tester.pumpWidget(builder());
final StatefulLeafState leaf = tester.firstState(find.byType(StatefulLeaf));
leaf.markNeedsBuild();
await tester.pump();
final Item lastItem = items[1];
items.remove(lastItem);
items.insert(0, lastItem);
await tester.pumpWidget(builder()); // this marks the app dirty and rebuilds it
});
}