Better idea, wait till this deal is through, import Uranium for existing plants as per IAEA preamble and then conduct the test :) What is the rush?
BTW, our scientists had said they have obtained all the data they need and there is no further need of conducting tests. Yield is disputed by west but why do you want to believe them more than Indian scientists? Conducting Nuclear test in this day and world is not a wise idea whether you have the deal or not. If you want to do saber rattling, it is a different matter. The only country to have tested weapons in this decade is North Korea and look where it stands.