Create the name and title

main.dart

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

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // Begin implementing the Column here.
  }
}

solution.dart

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

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisSize: MainAxisSize.min,
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text('Flutter McFlutter', style: Theme.of(context).textTheme.headline),
        Text('Experienced Developer'),
      ],
    );
  }
}

test.dart

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        scaffoldBackgroundColor: Color(0xffeeeeee),
        textTheme: TextTheme(
          body1: TextStyle(
            fontSize: 16,
          ),
        ),
      ),
      home: Scaffold(
        body: Padding(
          padding: const EdgeInsets.all(16.0),
          child: Center(
            child: Container(
              decoration: BoxDecoration(
                color: Color(0xffffffff),
                border: Border.all(),
                boxShadow: [
                  BoxShadow(
                    blurRadius: 10,
                    color: Color(0x80000000),
                  ),
                ],
              ),
              padding: const EdgeInsets.all(8.0),
              child: MyWidget(),
            ),
          ),
        ),
      ),
    );
  }
}

Future<void> main() async {
  final completer = Completer<void>();
  
  runApp(MyApp());

  WidgetsFlutterBinding.ensureInitialized()
      .addPostFrameCallback((timestamp) async {
    completer.complete();
  });
  
  await completer.future;

  final controller = LiveWidgetController(WidgetsBinding.instance);

  // Check MyWidget starts with one Column

  final myWidgetElement = controller.element(find.byType(MyWidget));

  final myWidgetChildElements = <Element>[];
  myWidgetElement.visitChildElements((e) => myWidgetChildElements.add(e));

  if (myWidgetChildElements.length != 1 ||
      myWidgetChildElements[0].widget is! Column) {
    _result(false, ['The root widget in MyWidget\'s build method should be a Column.']);
    return;
  }

  // Check Column has correct properties

  final innerColumnElement = myWidgetChildElements[0];
  final innerColumnWidget = innerColumnElement.widget as Column;

  if (innerColumnWidget.crossAxisAlignment != CrossAxisAlignment.start) {
    _result(false, ['The Column that contains the name and title should use CrossAxisAlignment.start as its CrossAxisAlignment value.']);
    return;
  }

  if (innerColumnWidget.mainAxisSize != MainAxisSize.min) {
    _result(false, ['The Column that contains the name and title should use MainAxisSize.min as its MainAxisSize value.']);
    return;
  }

  // Check inner Column has two Text children

  if (innerColumnWidget.children.any((w) => w is! Text)) {
    _result(false, ['The Column that contains the name and title should have two children, both Text widgets.']);
    return;
  }

  // Check first Text has headline style

  final nameText = innerColumnWidget.children[0] as Text;

  if (nameText?.style?.fontSize != 24) {
    _result(false, ['The Text widget for the name should use the "headline" textStyle.']);
    return;
  }

  _result(true);
}