Brother there was a test and interview both. first of all they conducted the test which comprises the mcq's on english,math,islamiat, pakstudy and subject related mcq's as in my case it was physics. After that they conduct the interview.
but brother i do not want to discourage you but the situation over there was pathetic. Test was conducted at the roof of the building were the wind was blowing a speed that uprooting the tents. Invigilators were providing evergreen help to there dear ones. and in the interview panel the person in front of me(there were 4 in total) asking me way i am applying over here as i have done M.sc i should apply on 17 or 18 grades seats. i try my best to convince him but in vain. He always saying that ye ziaddti ho gi un k sath jinho ne B.sc ki hui hai. what reason of rejection. i am really very much disappointed by there behavior