Unable to run tests using Test package in flutter, Android Studio - android-studio

Question

I have created a new flutter project and added the test package into my pubspec.yaml. Everytime I try to run my test, it fails with an error.
Here is the error message:
Here is the test code i'm trying to run:
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:boringapp/main.dart';
void main() {
testWidgets('Clicking on tile expands it', (WidgetTester tester) async {
await tester.pumpWidget(MyApp());
expect(find.byIcon(Icons.launch), findsNothing);
await tester.tap(find.byType(ExpansionTile));
await tester.pump();
expect(find.byIcon(Icons.launch), findsOneWidget);
});
}
Here is my pubspec.yaml
name: boringapp
description: A new Flutter application.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
version: 1.0.0+1
environment:
sdk: ">=2.7.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.3
url_launcher: ^5.4.11
dev_dependencies:
test: 1.14.7
flutter_test:
sdk: flutter
flutter:
uses-material-design: true
Here is my flutter doctor:
I am not even able to run the default test which comes when you create a new project. What am I missing?
Here is my homescreen.dart file
import 'package:boringapp/src/article.dart';
import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
class HomeScreen extends StatefulWidget {
#override
_HomeScreenState createState() => _HomeScreenState();
}
class _HomeScreenState extends State<HomeScreen> {
List<Article> _articles = aritcles;
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Flutter Home Page'),
),
body: RefreshIndicator(
onRefresh: () async {
setState(() {
_articles.removeAt(0);
});
return;
},
child: ListView(
children: _articles
.map((item) => ExpansionTile(
title: Text(item.title),
children: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
Text("comments"),
IconButton(
icon: Icon(Icons.open_in_new),
onPressed: () async {
if (await canLaunch(item.url)) {
launch(item.url);
}
},
)
],
)
],
))
.toList(),
),
),
);
}
}