Refactor core test runtime and simplify project documentation

tests/Media/MediaSchemaIntegrationTest.php

@@ -5,20 +5,19 @@ declare(strict_types=1);
 namespace Tests\Media;
 
 use Netig\Netslim\Kernel\Persistence\Infrastructure\Migrator;
-use PDO;
 use PDOException;
 use PHPUnit\Framework\TestCase;
+use Tests\Support\TestDatabaseFactory;
+use Tests\Support\TestRuntimeFactory;
 
 final class MediaSchemaIntegrationTest extends TestCase
 {
-    private PDO $db;
+    private \PDO $db;
 
     protected function setUp(): void
     {
-        $this->db = new PDO('sqlite::memory:', options: [
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-        ]);
+        TestRuntimeFactory::resetRuntime();
+        $this->db = TestDatabaseFactory::createInMemory();
 
         $this->db->sqliteCreateFunction('strip_tags', 'strip_tags', 1);
         Migrator::run($this->db);