diff --git a/.env.example b/.env.example
index dd79c63..27e7a64 100644
--- a/.env.example
+++ b/.env.example
@@ -2,7 +2,7 @@ APP_NAME="CTS Presenter"
 APP_ENV=local
 APP_KEY=
 APP_DEBUG=true
-APP_URL=http://localhost:8000
+APP_URL=http://cts-work.test
 
 # Application Locale (German)
 APP_LOCALE=de
@@ -74,9 +74,13 @@ CTS_API_TOKEN=CHANGEME
 CHURCHTOOLS_URL=https://CHANGEME.church.tools
 CHURCHTOOLS_CLIENT_ID=CHANGEME
 CHURCHTOOLS_CLIENT_SECRET=CHANGEME
-CHURCHTOOLS_REDIRECT_URI=http://localhost:8000/auth/churchtools/callback
+CHURCHTOOLS_REDIRECT_URI=http://cts-work.test/auth/churchtools/callback
 
 # File Upload Configuration
 # Maximum file size in bytes (default: 100MB)
 UPLOAD_MAX_FILE_SIZE=104857600
 UPLOAD_TEMP_DIR=/tmp
+
+# TestData
+TEST_CTS_USERNAME=
+TEST_CTS_PASSWORD=
diff --git a/app/Http/Controllers/AuthController.php b/app/Http/Controllers/AuthController.php
index 823fbd4..a01af04 100644
--- a/app/Http/Controllers/AuthController.php
+++ b/app/Http/Controllers/AuthController.php
@@ -17,7 +17,9 @@ class AuthController extends Controller
      */
     public function showLogin(): Response
     {
-        return Inertia::render('Auth/Login');
+        return Inertia::render('Auth/Login', [
+            'canDevLogin' => app()->environment('local', 'testing'),
+        ]);
     }
 
     /**
diff --git a/database/factories/UserFactory.php b/database/factories/UserFactory.php
index 584104c..72b3505 100644
--- a/database/factories/UserFactory.php
+++ b/database/factories/UserFactory.php
@@ -29,6 +29,10 @@ public function definition(): array
             'email_verified_at' => now(),
             'password' => static::$password ??= Hash::make('password'),
             'remember_token' => Str::random(10),
+            'churchtools_id' => fake()->unique()->numberBetween(1000, 99999),
+            'avatar' => null,
+            'churchtools_groups' => [],
+            'churchtools_roles' => [],
         ];
     }
 
diff --git a/resources/js/Pages/Auth/Login.vue b/resources/js/Pages/Auth/Login.vue
index 68b5236..397d83c 100644
--- a/resources/js/Pages/Auth/Login.vue
+++ b/resources/js/Pages/Auth/Login.vue
@@ -1,6 +1,10 @@
 <script setup>
 import GuestLayout from '@/Layouts/GuestLayout.vue';
-import { Head } from '@inertiajs/vue3';
+import { Head, router } from '@inertiajs/vue3';
+
+defineProps({
+    canDevLogin: Boolean,
+});
 </script>
 
 <template>
@@ -25,6 +29,17 @@ import { Head } from '@inertiajs/vue3';
                 </svg>
                 Mit ChurchTools anmelden
             </a>
+
+            <button
+                v-if="canDevLogin"
+                @click="router.post(route('dev-login'))"
+                class="inline-flex w-full items-center justify-center gap-2 rounded-md bg-amber-500 px-6 py-3 text-sm font-semibold text-white shadow-sm transition hover:bg-amber-600 focus:outline-none focus:ring-2 focus:ring-amber-500 focus:ring-offset-2"
+            >
+                <svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6V4m0 2a2 2 0 100 4m0-4a2 2 0 110 4m-6 8a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4m6 6v10m6-2a2 2 0 100-4m0 4a2 2 0 110-4m0 4v2m0-6V4" />
+                </svg>
+                Test-Anmeldung
+            </button>
         </div>
     </GuestLayout>
 </template>
diff --git a/routes/web.php b/routes/web.php
index dcac5f2..dce4193 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -9,6 +9,7 @@
 use App\Http\Controllers\TranslationController;
 use Illuminate\Support\Facades\Route;
 use Inertia\Inertia;
+use Illuminate\Support\Facades\Auth;
 
 Route::middleware('guest')->group(function () {
     Route::get('/login', [AuthController::class, 'showLogin'])->name('login');
@@ -16,6 +17,26 @@
     Route::get('/auth/churchtools/callback', [AuthController::class, 'callback'])->name('auth.churchtools.callback');
 });
 
+if (app()->environment('local', 'testing')) {
+    Route::middleware('guest')->group(function () {
+        Route::post('/dev-login', function () {
+            $user = \App\Models\User::updateOrCreate(
+                ['email' => 'test@local.dev'],
+                [
+                    'name' => 'Test Benutzer',
+                    'churchtools_id' => 99999,
+                    'password' => '',
+                    'avatar' => null,
+                    'churchtools_groups' => [],
+                    'churchtools_roles' => [],
+                ]
+            );
+            Auth::login($user);
+            return redirect()->route('dashboard');
+        })->name('dev-login');
+    });
+}
+
 Route::post('/logout', [AuthController::class, 'logout'])
     ->middleware('auth')
     ->name('logout');