One of things that i think is the biggest part of this all is the fact that the last time Rashid played Tests he actually wasn't that great, and the difference between red and white ball spin bowling is huge. I realise the debate regarding the counties and him turning his back on red ball cricket but i think that actual argument is getting a little lost etc...
Some stats for you all - current main spin bowlers in the ODI ICC Rankings - ODI vs Test averages
Adil Rashid - ODI 30.8, Tests 42.7
Rashid Khan - ODI 14.4, Tests 77.0 (realise only played 1 test - but he still went miles in it!)
Kuldeep Yadav - ODI 19.3, Tests 20.7
Imran Tahir - ODI 24.8, Tests 40.2
Mitch Santner - ODI 33.9, Tests 37.0
Shadab Khan - ODI 25.6, Tests 48.2
Shakib Al Hasan - ODI 29.5, Tests 31.8
Graeme Cremer - ODI 30.2, Tests 45.6
Interesting the 2 below are the only ones with better Test averages
Ravi Ashwin - ODI 32.9, Tests 25.3
Mo Ali - ODI 45.0, Tests 40.6