// 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/src/widgets/basic.dart'; import 'package:flutter/src/widgets/framework.dart'; import 'package:flutter/src/widgets/layout_builder.dart'; import 'package:flutter_test/flutter_test.dart'; class Wrapper extends StatelessWidget { const Wrapper({ Key key, @required this.child }) : assert(child != null), super(key: key); final Widget child; @override Widget build(BuildContext context) => child; } void main() { testWidgets('Moving a global key from another LayoutBuilder at layout time', (WidgetTester tester) async { final GlobalKey victimKey = new GlobalKey(); await tester.pumpWidget(new Row( textDirection: TextDirection.ltr, children: <Widget>[ new Wrapper( child: new LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) { return const SizedBox(); }), ), new Wrapper( child: new Wrapper( child: new LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) { return new Wrapper( child: new SizedBox(key: victimKey) ); }) ) ), ], )); await tester.pumpWidget(new Row( textDirection: TextDirection.ltr, children: <Widget>[ new Wrapper( child: new LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) { return new Wrapper( child: new SizedBox(key: victimKey) ); }) ), new Wrapper( child: new Wrapper( child: new LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) { return const SizedBox(); }) ) ), ], )); }); }