// 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 { StatefulLeaf({ GlobalKey key }) : super(key: key); @override StatefulLeafState createState() => new StatefulLeafState(); } class StatefulLeafState extends State<StatefulLeaf> { void test() { setState(() { }); } @override Widget build(BuildContext context) => new Text('leaf'); } class KeyedWrapper extends StatelessWidget { KeyedWrapper(this.key1, this.key2); Key key1, 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('duplicate key smoke test', (WidgetTester tester) async { await tester.pumpWidget(builder()); StatefulLeafState leaf = tester.firstState(find.byType(StatefulLeaf)); leaf.test(); await tester.pump(); Item lastItem = items[1]; items.remove(lastItem); items.insert(0, lastItem); await tester.pumpWidget(builder()); // this marks the app dirty and rebuilds it }); }