chore: initial import for test contour

tests/Controller/StockControllerTest.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Tests\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
+
+final class StockControllerTest extends WebTestCase
+{
+    public function testIndex(): void
+    {
+        $client = static::createClient();
+        $client->request('GET', '/stock');
+
+        self::assertResponseIsSuccessful();
+    }
+}