diff --git a/.env.testing b/.env.testing
new file mode 100644
index 00000000..f1d8986a
--- /dev/null
+++ b/.env.testing
@@ -0,0 +1,40 @@
+APP_NAME="Trypost.it"
+APP_ENV=testing
+APP_KEY=base64:oWfTqkX5cJwaVV7c8/z9xjC4XLGzbsKmjSgZiHtvxlk=
+APP_DEBUG=true
+APP_URL=https://trypost.test
+
+DB_CONNECTION=pgsql
+DB_HOST=127.0.0.1
+DB_PORT=5432
+DB_DATABASE=trypost_test
+DB_USERNAME=root
+DB_PASSWORD=
+
+# Test credentials for social platforms
+LINKEDIN_CLIENT_ID=test-linkedin-client-id
+LINKEDIN_CLIENT_SECRET=test-linkedin-client-secret
+
+X_CLIENT_ID=test-x-client-id
+X_CLIENT_SECRET=test-x-client-secret
+
+TIKTOK_CLIENT_ID=test-tiktok-client-id
+TIKTOK_CLIENT_SECRET=test-tiktok-client-secret
+
+FACEBOOK_CLIENT_ID=test-facebook-client-id
+FACEBOOK_CLIENT_SECRET=test-facebook-client-secret
+
+INSTAGRAM_CLIENT_ID=test-instagram-client-id
+INSTAGRAM_CLIENT_SECRET=test-instagram-client-secret
+
+THREADS_CLIENT_ID=test-threads-client-id
+THREADS_CLIENT_SECRET=test-threads-client-secret
+
+GOOGLE_CLIENT_ID=test-google-client-id
+GOOGLE_CLIENT_SECRET=test-google-client-secret
+
+PINTEREST_CLIENT_ID=test-pinterest-client-id
+PINTEREST_CLIENT_SECRET=test-pinterest-client-secret
+
+UNSPLASH_ACCESS_KEY=test-unsplash-access-key
+UNSPLASH_SECRET_KEY=test-unsplash-secret-key
\ No newline at end of file
diff --git a/app/Models/Language.php b/app/Models/Language.php
index bebc8ba6..44a38a8b 100644
--- a/app/Models/Language.php
+++ b/app/Models/Language.php
@@ -3,12 +3,13 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Concerns\HasUuids;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 
 class Language extends Model
 {
-    use HasUuids;
+    use HasFactory, HasUuids;
 
     protected $fillable = [
         'name',
diff --git a/database/factories/LanguageFactory.php b/database/factories/LanguageFactory.php
new file mode 100644
index 00000000..0ae513ad
--- /dev/null
+++ b/database/factories/LanguageFactory.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Database\Factories;
+
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Language>
+*/
+class LanguageFactory extends Factory
+{
+    /**
+     * Define the model's default state.
+     *
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            'name' => 'English',
+            'code' => 'en-US',
+        ];
+    }
+}
diff --git a/database/factories/UserFactory.php b/database/factories/UserFactory.php
index 80da5ac7..cba2d87b 100644
--- a/database/factories/UserFactory.php
+++ b/database/factories/UserFactory.php
@@ -2,6 +2,7 @@
 
 namespace Database\Factories;
 
+use App\Models\Language;
 use Illuminate\Database\Eloquent\Factories\Factory;
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Str;
@@ -29,6 +30,7 @@ public function definition(): array
             'email_verified_at' => now(),
             'password' => static::$password ??= Hash::make('password'),
             'remember_token' => Str::random(10),
+            'language_id' => Language::factory(),
             'two_factor_secret' => null,
             'two_factor_recovery_codes' => null,
             'two_factor_confirmed_at' => null,
diff --git a/database/migrations/0001_01_01_000000_create_users_table.php b/database/migrations/0001_01_01_000000_create_users_table.php
index 1e583ee3..03dc3353 100644
--- a/database/migrations/0001_01_01_000000_create_users_table.php
+++ b/database/migrations/0001_01_01_000000_create_users_table.php
@@ -14,7 +14,7 @@ public function up(): void
         Schema::create('languages', function (Blueprint $table) {
             $table->uuid('id')->primary();
             $table->string('name');
-            $table->string('code')->unique();
+            $table->string('code');
             $table->timestamps();
         });
 
diff --git a/phpunit.xml b/phpunit.xml
index 88b9d18b..63face99 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -28,6 +28,7 @@
         <env name="QUEUE_CONNECTION" value="sync"/>
         <env name="SESSION_DRIVER" value="array"/>
         <env name="PULSE_ENABLED" value="false"/>
+        <env name="FILESYSTEM_DISK" value="local"/>
         <env name="TELESCOPE_ENABLED" value="false"/>
         <env name="NIGHTWATCH_ENABLED" value="false"/>
     </php>
diff --git a/tests/CreatesApplication.php b/tests/CreatesApplication.php
new file mode 100644
index 00000000..117f0c91
--- /dev/null
+++ b/tests/CreatesApplication.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests;
+
+use Illuminate\Contracts\Console\Kernel;
+use Illuminate\Foundation\Application;
+
+trait CreatesApplication
+{
+    /**
+     * Creates the application.
+     */
+    public function createApplication(): Application
+    {
+        $app = require __DIR__.'/../bootstrap/app.php';
+
+        $app->make(Kernel::class)->bootstrap();
+
+        return $app;
+    }
+}
diff --git a/tests/Feature/Settings/ProfileUpdateTest.php b/tests/Feature/Settings/ProfileUpdateTest.php
index b4c4c378..08226fb4 100644
--- a/tests/Feature/Settings/ProfileUpdateTest.php
+++ b/tests/Feature/Settings/ProfileUpdateTest.php
@@ -20,6 +20,7 @@
         ->patch(route('profile.update'), [
             'name' => 'Test User',
             'email' => 'test@example.com',
+            'language_id' => $user->language_id,
         ]);
 
     $response
@@ -41,6 +42,7 @@
         ->patch(route('profile.update'), [
             'name' => 'Test User',
             'email' => $user->email,
+            'language_id' => $user->language_id,
         ]);
 
     $response
diff --git a/tests/TestCase.php b/tests/TestCase.php
index dcf2e89e..29e8ad38 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -8,6 +8,8 @@
 
 abstract class TestCase extends BaseTestCase
 {
+    use CreatesApplication;
+
     /**
      * Indicates whether the default seeder should run before each test.
      *