diff --git a/tests/mini_payment_target_self_check.php b/tests/mini_payment_target_self_check.php
new file mode 100644
index 0000000..66bf942
--- /dev/null
+++ b/tests/mini_payment_target_self_check.php
@@ -0,0 +1,11 @@
+<?php
+declare(strict_types=1);
+
+require dirname(__DIR__) . '/app/miniapi/service/Payment/MiniPayService.php';
+
+use app\miniapi\service\Payment\MiniPayService;
+
+if (MiniPayService::targetMarkForCheck('bjglobal', 'singapore') !== 'bjglobalsingapore') throw new RuntimeException('target payment mark failed');
+if (MiniPayService::targetMarkForCheck('bjglobal', 'bad-table') !== '') throw new RuntimeException('unsafe target table accepted');
+
+echo "PASS mini_payment_target_self_check\n";