The Afghani's fought back reasonably well, restricting the powerhouse Indian batting line up to under 500. Whilst Rashid and Mujeeb are limited overs Kings, in Test cricket it is not about countless variations, but you need to have a stock ball which helps you build pressure on the batsmen. Hopefully Rashid and Mujeeb learn this otherwise they'll become ineffective in Test cricket like other 'mystery' spinners Ajantha Mendis and Sunil Narine.
The Afghani batting isn't as of yet up to Test standard, trying to beast the ball around isn't a winning method against experienced campaigners like Umesh and Ishant