diff --git a/tests/data/ar/Order.php b/tests/data/ar/Order.php
index <HASH>..<HASH> 100644
--- a/tests/data/ar/Order.php
+++ b/tests/data/ar/Order.php
@@ -196,4 +196,11 @@ class Order extends ActiveRecord
             'total' => 'Invoice Total',
         ];
     }
+
+    public function activeAttributes()
+    {
+        return [
+            0 => 'customer_id'
+        ];
+    }
 }
enhance tests for DataColumn (#<I>)