32 lines
1.0 KiB
Dart
32 lines
1.0 KiB
Dart
// Copyright 2014 The Flutter 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/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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class Changer extends StatefulWidget {
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const Changer({ super.key });
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@override
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ChangerState createState() => ChangerState();
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}
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class ChangerState extends State<Changer> {
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void test0() { setState(() { }); }
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void test1() { setState(() => 1); }
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void test2() { setState(() async { }); }
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@override
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Widget build(BuildContext context) => const Text('test', textDirection: TextDirection.ltr);
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}
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void main() {
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testWidgets('setState() catches being used with an async callback', (WidgetTester tester) async {
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await tester.pumpWidget(const Changer());
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final ChangerState s = tester.state(find.byType(Changer));
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expect(s.test0, isNot(throwsFlutterError));
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expect(s.test1, isNot(throwsFlutterError));
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expect(s.test2, throwsFlutterError);
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});
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}
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