add controllers, servoices

tests/Unit/Services/ClassPreparation/ClassPreparationLogServiceTest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Tests\Unit\Services\ClassPreparation;
+
+use App\Services\ClassPreparation\ClassPreparationLogService;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
+use Tests\TestCase;
+
+class ClassPreparationLogServiceTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_has_prep_changed_detects_diff(): void
+    {
+        $service = new ClassPreparationLogService();
+
+        $this->assertTrue($service->hasPrepChanged(['a' => 1], ['a' => 2]));
+        $this->assertFalse($service->hasPrepChanged(['a' => 1], ['a' => 1]));
+    }
+
+    public function test_create_log_and_get_latest(): void
+    {
+        $service = new ClassPreparationLogService();
+        $created = $service->createLog('101', '1-A', '2025-2026', ['Small Table' => 2], '2025-09-01 00:00:00');
+
+        $this->assertTrue($created);
+        $this->assertDatabaseHas('class_preparation_log', [
+            'class_section_id' => 101,
+            'school_year' => '2025-2026',
+        ]);
+
+        $log = $service->getLatestLog('101', '2025-2026');
+        $this->assertNotNull($log);
+    }
+}