// 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_test/flutter_test.dart'; import 'package:flutter/widgets.dart'; class TestUniqueWidget extends UniqueWidget<TestUniqueWidgetState> { const TestUniqueWidget({ GlobalKey<TestUniqueWidgetState> key }) : super(key: key); @override TestUniqueWidgetState createState() => TestUniqueWidgetState(); } class TestUniqueWidgetState extends State<TestUniqueWidget> { @override Widget build(BuildContext context) => Container(); } void main() { testWidgets('Unique widget control test', (WidgetTester tester) async { final TestUniqueWidget widget = TestUniqueWidget(key: GlobalKey<TestUniqueWidgetState>()); await tester.pumpWidget(widget); final TestUniqueWidgetState state = widget.currentState; expect(state, isNotNull); await tester.pumpWidget(Container(child: widget)); expect(widget.currentState, equals(state)); }); }