How to answer if interviewer ask how do you test e-commerce site [closed]

Question

Once interviewer asked me how you gonna test the e-commerce site, i tried to explain flow wise and module wise but he looks unhappy.

Answer 1

what kind of e-commerce ? which function need to test ? do you intend to talk all cases of e-commerce site in the interview ?

I think the main point of this question is to see how deep you go to collect/clarify information from client/stakeholder, NOT how to test :)