Alexandre Ardhuin 83fce211a3 More const immutable classes (#9544)
* more widget const constructors

* prefer const constructors

* address review comments
2017-04-23 22:37:29 +02:00

17 lines
520 B
Dart

// 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/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('debugCheckHasMaterial control test', (WidgetTester tester) async {
await tester.pumpWidget(const FlatButton(
onPressed: null,
child: const Text('Go'),
));
expect(tester.takeException(), isFlutterError);
});
}