add services logic

tests/Unit/Services/Security/Pbkdf2HasherTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Tests\Unit\Services\Security;
+
+use App\Services\Security\Pbkdf2Hasher;
+use Tests\TestCase;
+
+class Pbkdf2HasherTest extends TestCase
+{
+    public function test_hash_and_verify(): void
+    {
+        $hasher = new Pbkdf2Hasher();
+        $hash = $hasher->hash('secret');
+
+        $this->assertTrue($hasher->verify('secret', $hash));
+        $this->assertFalse($hasher->verify('wrong', $hash));
+    }
+}