Flutter -如何在窗口小部件测试中获得文本窗口小部件

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

void main() {
  testWidgets('Test Text Widget', (WidgetTester tester) async {
    // 构建测试用的窗口小部件
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          body: Center(
            child: Text('Hello World'),
          ),
        ),
      ),
    );

    // 查找文本窗口小部件
    final textWidget = find.text('Hello World');

    // 断言文本窗口小部件是否存在
    expect(textWidget, findsOneWidget);
  });
}