fix: test command

src/infrastructure/itpay/client.py

@@ -39,6 +39,9 @@ class ItPayClient(IItPayService):
             'service_fee': str(order.service_fee) if order.service_fee is not None else None,
             'amount': amount_str,
         }
+        if order.total_price is not None and order.service_fee is not None:
+            principal = (Decimal(str(order.total_price)) - Decimal(str(order.service_fee))).quantize(Decimal('0.01'))
+            metadata['principal_amount'] = str(principal)
         metadata = {k:v for k,v in metadata.items() if v is not None and v != ''}
         payload: dict[str, Any] = {
             'amount': amount_str,