add all controllers logic

tests/Unit/Services/Settings/SettingsServiceTest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Tests\Unit\Services\Settings;
+
+use App\Models\Setting;
+use App\Services\Settings\SettingsService;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
+use Tests\TestCase;
+
+class SettingsServiceTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_update_persists_settings(): void
+    {
+        $service = new SettingsService();
+
+        $result = $service->update([
+            'site_name' => 'Alrahma',
+            'timezone' => 'UTC',
+            'administrator_email' => 'admin@example.com',
+        ], 1);
+
+        $this->assertSame('Alrahma', $result['site_name']);
+        $this->assertDatabaseHas('settings', [
+            'name' => 'Alrahma',
+            'timezone' => 'UTC',
+        ]);
+        $this->assertDatabaseHas('configuration', [
+            'config_key' => 'administrator_email',
+            'config_value' => 'admin@example.com',
+        ]);
+    }
+}