69 lines
1.7 KiB
Dart
69 lines
1.7 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/widgets.dart';
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class Item {
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GlobalKey key1 = new GlobalKey();
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GlobalKey key2 = new GlobalKey();
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@override
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String toString() => "Item($key1, $key2)";
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}
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List<Item> items = <Item>[new Item(), new Item()];
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class StatefulLeaf extends StatefulWidget {
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const StatefulLeaf({ GlobalKey key }) : super(key: key);
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@override
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StatefulLeafState createState() => new StatefulLeafState();
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}
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class StatefulLeafState extends State<StatefulLeaf> {
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void markNeedsBuild() { setState(() { }); }
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@override
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Widget build(BuildContext context) => const Text('leaf', textDirection: TextDirection.ltr);
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}
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class KeyedWrapper extends StatelessWidget {
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const KeyedWrapper(this.key1, this.key2);
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final Key key1;
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final Key key2;
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@override
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Widget build(BuildContext context) {
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return new Container(
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key: key1,
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child: new StatefulLeaf(
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key: key2,
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)
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);
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}
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}
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Widget builder() {
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return new Column(
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children: <Widget>[
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new KeyedWrapper(items[1].key1, items[1].key2),
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new KeyedWrapper(items[0].key1, items[0].key2),
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],
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);
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}
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void main() {
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testWidgets('moving subtrees with global keys - smoketest', (WidgetTester tester) async {
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await tester.pumpWidget(builder());
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final StatefulLeafState leaf = tester.firstState(find.byType(StatefulLeaf));
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leaf.markNeedsBuild();
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await tester.pump();
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final Item lastItem = items[1];
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items.remove(lastItem);
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items.insert(0, lastItem);
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await tester.pumpWidget(builder()); // this marks the app dirty and rebuilds it
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});
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}
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