feat: included test

test/app/view/app_test.dart

@@ -5,15 +5,15 @@
 // license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
-import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:pinball/app/app.dart';
+import 'package:pinball/landing/landing.dart';
 
 void main() {
   group('App', () {
-    testWidgets('renders CounterPage', (tester) async {
+    testWidgets('renders LandingPage', (tester) async {
       await tester.pumpWidget(const App());
-      expect(find.byType(Container), findsOneWidget);
+      expect(find.byType(LandingPage), findsOneWidget);
     });
   });
 }

test/game/view/pinball_game_page_test.dart

@@ -0,0 +1,14 @@
+import 'package:flame/game.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pinball/game/game.dart';
+
+import '../../helpers/helpers.dart';
+
+void main() {
+  group('PinballGamePage', () {
+    testWidgets('renders single GameWidget with PinballGame', (tester) async {
+      await tester.pumpApp(const PinballGamePage());
+      expect(find.byType(GameWidget<PinballGame>), findsOneWidget);
+    });
+  });
+}

test/landing/view/landing_page_test.dart

@@ -0,0 +1,17 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:pinball/game/game.dart';
+import 'package:pinball/landing/landing.dart';
+
+import '../../helpers/helpers.dart';
+
+void main() {
+  group('LandingPage', () {
+    testWidgets('renders TextButton', (tester) async {
+      await tester.pumpApp(const LandingPage());
+      expect(find.byType(TextButton), findsOneWidget);
+    });
+  });
+}