blob: d998d7ba15f69cf8ac3007253aa922e9044207af [file] [log] [blame]
// Copyright 2015 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';
import 'package:flutter/widgets.dart';
class Item {
GlobalKey key1 = new GlobalKey();
GlobalKey key2 = new GlobalKey();
@override
String toString() => 'Item($key1, $key2)';
}
List<Item> items = <Item>[new Item(), new Item()];
class StatefulLeaf extends StatefulWidget {
const StatefulLeaf({ GlobalKey key }) : super(key: key);
@override
StatefulLeafState createState() => new 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);
final Key key1;
final Key key2;
@override
Widget build(BuildContext context) {
return new Container(
key: key1,
child: new StatefulLeaf(
key: key2,
)
);
}
}
Widget builder() {
return new Column(
children: <Widget>[
new KeyedWrapper(items[1].key1, items[1].key2),
new 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
});
}