flutter-go/packages/flutter_web/test/widgets/set_state_2_test.dart

// Copyright 2015 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_web_test/flutter_web_test.dart';
import 'package:flutter_web/widgets.dart';

void main() {
  testWidgets('setState() overbuild test', (WidgetTester tester) async {
    final List<String> log = <String>[];
    final Builder inner = Builder(builder: (BuildContext context) {
      log.add('inner');
      return const Text('inner', textDirection: TextDirection.ltr);
    });
    int value = 0;
    await tester.pumpWidget(Builder(builder: (BuildContext context) {
      log.add('outer');
      return StatefulBuilder(
          builder: (BuildContext context, StateSetter setState) {
        log.add('stateful');
        return GestureDetector(onTap: () {
          setState(() {
            value += 1;
          });
        }, child: Builder(builder: (BuildContext context) {
          log.add('middle $value');
          return inner;
        }));
      });
    }));
    log.add('---');
    await tester.tap(find.text('inner'));
    await tester.pump();
    log.add('---');
    expect(
        log,
        equals(<String>[
          'outer',
          'stateful',
          'middle 0',
          'inner',
          '---',
          'stateful',
          'middle 1',
          '---',
        ]));
  });
}