diff --git a/Pong/analysis_options.yaml b/Pong/analysis_options.yaml
index 0d29021..0439848 100644
--- a/Pong/analysis_options.yaml
+++ b/Pong/analysis_options.yaml
@@ -23,6 +23,5 @@ linter:
   rules:
     # avoid_print: false  # Uncomment to disable the `avoid_print` rule
     # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
-
 # Additional information about this file can be found at
 # https://dart.dev/guides/language/analysis-options
diff --git a/Pong/lib/main.dart b/Pong/lib/main.dart
index de59bdc..80a7b30 100644
--- a/Pong/lib/main.dart
+++ b/Pong/lib/main.dart
@@ -8,7 +8,7 @@ import 'package:flutter/scheduler.dart';
 import 'package:pong/pong_menu.dart';
 
 void main() {
-  // Run the PongGame
+  // Run the PongGame app
   runApp(const PongGame());
 }
 
diff --git a/Pong/pubspec.lock b/Pong/pubspec.lock
index 32958ff..019d111 100644
--- a/Pong/pubspec.lock
+++ b/Pong/pubspec.lock
@@ -66,10 +66,10 @@ packages:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      sha256: a25a15ebbdfc33ab1cd26c63a6ee519df92338a9c10f122adda92938253bef04
+      sha256: e2a421b7e59244faef694ba7b30562e489c2b489866e505074eb005cd7060db7
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.3"
+    version: "3.0.1"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -79,10 +79,10 @@ packages:
     dependency: transitive
     description:
       name: lints
-      sha256: "0a217c6c989d21039f1498c3ed9f3ed71b354e69873f13a8dfc3c9fe76f1b452"
+      sha256: cbf8d4b858bb0134ef3ef87841abdf8d63bfc255c266b7bf6b39daa1085c4290
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.1"
+    version: "3.0.0"
   matcher:
     dependency: transitive
     description:
diff --git a/Pong/pubspec.yaml b/Pong/pubspec.yaml
index a058bd5..113e09a 100644
--- a/Pong/pubspec.yaml
+++ b/Pong/pubspec.yaml
@@ -44,7 +44,7 @@ dev_dependencies:
   # activated in the `analysis_options.yaml` file located at the root of your
   # package. See that file for information about deactivating specific lint
   # rules and activating additional ones.
-  flutter_lints: ^2.0.0
+  flutter_lints: ^3.0.1
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
diff --git a/Pong/test/unit_test.dart b/Pong/test/unit_test.dart
index 7416990..d88cb02 100644
--- a/Pong/test/unit_test.dart
+++ b/Pong/test/unit_test.dart
@@ -1,7 +1,35 @@
 import 'package:flutter_test/flutter_test.dart';
-
 import 'package:pong/main.dart';
+import 'package:mockito/mockito.dart'
+
+
+class MockGameScreen extends Mock implements GameScreen {}
 
 void main() {
   test('moveRacket', () {});
+
+  test('moveBall updates ball position and handles collisions', () {
+    final gameScreenState = GameScreenState();
+
+    // Setze den Ball in eine Ausgangsposition
+    gameScreenState.ballPositionX = 50;
+    gameScreenState.ballPositionY = 50;
+
+    // Bewege den Ball nach rechts und überprüfe die Position
+    gameScreenState.moveBall(1.0);
+    expect(gameScreenState.ballPositionX, greaterThan(50));
+
+    // Bewege den Ball nach unten und überprüfe die Position
+    gameScreenState.moveBall(1.0);
+    expect(gameScreenState.ballPositionY, greaterThan(50));
+
+    // Teste die Kollision mit den Wänden
+    gameScreenState.ballPositionX = 0;
+    gameScreenState.ballSpeedX = -1.0;
+    gameScreenState.moveBall(1.0);
+    expect(gameScreenState.ballSpeedX,
+        greaterThan(0)); // Die Richtung des Balls sollte sich ändern
+
+    // Füge weitere Tests für Kollisionen hinzu
+  });
 }
diff --git a/Pong/test/widget_test.dart b/Pong/test/widget_test.dart
index 2e1619d..b2b11d4 100644
--- a/Pong/test/widget_test.dart
+++ b/Pong/test/widget_test.dart
@@ -1,16 +1,40 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 import 'package:pong/main.dart';
 
 void main() {
   testWidgets('Tests "Berühren um zu beginnen!"', (WidgetTester tester) async {
-    final tapToStart = find.byKey(const ValueKey("tapToStart"));
+    final tapToStart = find.text("Berühren um zu beginnen!");
 
     await tester.pumpWidget(const MaterialApp(home: StartScreen()));
-    await tester.tap(tapToStart);
+
+    expect(tapToStart, findsOneWidget);
+  });
+
+  testWidgets('Tests "Punkte:"', (WidgetTester tester) async {
+    final points = find.text("Punkte: 0");
+
+    await tester.pumpWidget(const MaterialApp(home: GameScreen()));
+
+    expect(points, findsOneWidget);
+  });
+
+  testWidgets('StartScreen UI Test', (WidgetTester tester) async {
+    // Build our app and trigger a frame.
+    await tester.pumpWidget(const MaterialApp(
+      home: StartScreen(),
+    ));
+
+    // Verify that the "Berühren um zu beginnen!" Text angezeigt wird.
+    expect(find.text('Berühren um zu beginnen!'), findsOneWidget);
+
+    // Tap auf das GestureDetector, um zur GameScreen zu wechseln.
+    await tester.tap(find.byType(GestureDetector));
     await tester.pump();
 
-    expect(find.text("Berühren um zu beginnen!"), findsOneWidget);
+    // Verify, dass der Übergang zur GameScreen erfolgt ist.
+    expect(find.byType(GameScreen), findsOneWidget);
   });
 }