I am working in a company which Designs & Develops websites & Web Applications. I am recruited as Quality Assurance Specialist in the company. As it is a startup company, People working here are assigned Multi roles according to their skills. I am also assigned as the Test Engineer for the websites which is developed in my company. All I do is just a functional test for all the websites with respect to its requirement from the client. Still I dont know to test the payment gateway integrations if any in the sites especially for ecommerce sites. Can anyone GUIDE me to overcome this problem.......?