fix test

payment/models.py

@@ -166,6 +166,10 @@ class Transaction(models.Model):
         self.date_executed = now()
         self.save()
 
+    def set_payment(self):      
+        self.date_payment = now()
+        self.save() 
+    
     def set_credit_approved(self, amount):
         self.amount=amount
         self.host = PAYMENT_HOST_CREDIT