Skip MySQL tests if database is not available

Author: alcaeus

tests/HybridRelationsTest.php

@@ -3,13 +3,22 @@
 declare(strict_types=1);
 
 use Illuminate\Database\MySqlConnection;
+use Illuminate\Support\Facades\DB;
+use PDOException;
 
 class HybridRelationsTest extends TestCase
 {
     public function setUp(): void
     {
         parent::setUp();
 
+        /** @var Connection */
+        try {
+            DB::connection('mysql')->select('SELECT 1');
+        } catch (PDOException) {
+            $this->markTestSkipped('MySQL connection is not available.');
+        }
+
         MysqlUser::executeSchema();
         MysqlBook::executeSchema();
         MysqlRole::executeSchema();