Static analysis of unittest code.

tests/Notification/NotificationTest.php

@@ -1,4 +1,8 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests;
 
 use PHPUnit\Framework\TestCase;
 use App\Notification\Notification;
@@ -7,7 +11,8 @@ use PHPUnit\Framework\Attributes\DataProvider;
 
 final class NotificationTest extends TestCase
 {
-    static $config = ['type'=>'ntfy', 'domain'=>'https://test.com', 'topic'=>'testing'];
+    /** @var array<string, string> */
+    private static array $config = ['type' => 'ntfy', 'domain' => 'https://test.com', 'topic' => 'testing'];
 
     public function testloadSingle(): void
     {
@@ -47,4 +52,4 @@ final class NotificationTest extends TestCase
         $mock->expects($this->once())->method('send');
         $dut->send('title', 'topic');
     }
-}
+}