blob: 843cdd0b0dc228aeeb0d9b473b73464f79e98709 [file] [log] [blame]
// Copyright 2014 The Flutter 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 Changer extends StatefulWidget {
const Changer({ Key key }) : super(key: key);
@override
ChangerState createState() => ChangerState();
}
class ChangerState extends State<Changer> {
void test0() { setState(() { }); }
void test1() { setState(() => 1); }
void test2() { setState(() async { }); }
@override
Widget build(BuildContext context) => const Text('test', textDirection: TextDirection.ltr);
}
void main() {
testWidgets('setState() catches being used with an async callback', (WidgetTester tester) async {
await tester.pumpWidget(const Changer());
final ChangerState s = tester.state(find.byType(Changer));
expect(s.test0, isNot(throwsFlutterError));
expect(s.test1, isNot(throwsFlutterError));
expect(s.test2, throwsFlutterError);
});
}