Miful, somewhere on TDR are several links that list the TYPES of aftermarket devices which are exempt from affecting your diesel smog test certification. IIRC, aftermarket CAI do NOT affect certifiability in and of themselves, thereforte, the smog test station that you took it to, does NOT know what they are doing, which is quite likely given the newness of these tests. My recomendation would be to print up a copy of the devices allowed from one of the links take it back to the same station. If they still do NOT want to test you, go to another test station, but be sure to bring the printout just in case they challenge you on the same thing.
On edit: these sites do NOT seem to be operating right now, as I am getting a failure to load error from my browser. Keep trying through the day, as I am sure that they have the info you need to print out...
On edit: removed links to CARB, as they were NOT the right ones.
On edit: Still sure the CAI does NOT affect diesel smog certification.