hint.txt

Let's do a Hello World

main.dart

import 'package:flutter_web/material.dart';
import 'package:flutter_web_test/flutter_web_test.dart';
import 'package:flutter_web_ui/ui.dart' as ui;

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

solution.dart

import 'package:flutter_web/material.dart';
import 'package:flutter_web_test/flutter_web_test.dart';
import 'package:flutter_web_ui/ui.dart' as ui;

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Text('Hello World');
  }
}

test.dart

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Directionality(
      textDirection: TextDirection.ltr,
      child: Container(
        color: Color(0xffeeeeee),
        child: Center(
          child: Container(
            child: MyWidget(),
            color: Color(0xffcccccc),
          ),
        ),
      ),
    );
  }
}

Future<void> main() async {
  await ui.webOnlyInitializePlatform();
  
  runApp(MyApp());

  final controller = LiveWidgetController(WidgetsBinding.instance);

  final texts = controller.widgetList(find.byType(Text));

  if (texts.length == 0) {
    _result(false, ['Couldn\'t find a Text!']);
    return;
  }

  if (texts.length > 1) {
    _result(false, ['Found ${texts.length} Text, rather than just one.']);
    return;
  }

  final text = texts.first as Text;

  if (text.data != 'Hello World') {
    _result(false, ['The Text does not say Hello World.']);
    return;
  }

  _result(true, ['A Text that says "Hello World". Well done!']);
}