从重启的App Flutter运行集成测试

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets('重启App后的集成测试', (WidgetTester tester) async {
    // 构建测试用的Widget
    await tester.pumpWidget(MyApp());

    // 执行测试操作
    await tester.tap(find.byIcon(Icons.add));
    await tester.pumpAndSettle();

    // 验证操作结果
    expect(find.text('1'), findsOneWidget);

    // 重启App
    await tester.binding.window.scheduleFrame();
    await tester.binding.window.scheduleFrame();

    // 验证重启后的状态
    expect(find.text('0'), findsOneWidget);
  });
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('集成测试示例')),
        body: CounterWidget(),
      ),
    );
  }
}

class CounterWidget extends StatefulWidget {
  @override
  _CounterWidgetState createState() => _CounterWidgetState();
}

class _CounterWidgetState extends State<CounterWidget> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          Text('You have pushed the button $_counter times.'),
          IconButton(icon: Icon(Icons.add), onPressed: _incrementCounter),
        ],
      ),
    );
  }
}