add test batches

tests/Unit/Services/PurchaseOrders/PurchaseOrderReceiveServiceTest.php

@@ -39,7 +39,7 @@ class PurchaseOrderReceiveServiceTest extends TestCase
             'unit_cost' => 3,
         ]);
 
-        $service = new PurchaseOrderReceiveService;
+        $service = new PurchaseOrderReceiveService();
         $result = $service->receive($po->id, [
             ['id' => $item->id, 'quantity' => 3],
         ], 'tester@example.com');