There is no explicit mention about nuclear test, but what i think is that once India is engaged with NSG and IAEA, It is hard to conduct the test first.Becuase it will not create India's positive image in international forums. That will provoke Pakistan another nonsignatory of NPT and other countries to conduct nuclear tests.If some other countries specially Pakistan conducts test, then India can do but there will be no first bang in India. Because India will be morally bound. Some people link this issue with China and what I believe is that China has nothing to do with it because China itself is a signatory of NPT. China may encourage Pakistan to get the similar deal but US will not go that far because US has no long term strategic interest with Pakistan anymore.
