To my knowledge, SAS has not provided detailed info on how they simulate orbital environments when testing its nano-sats and what applications they are using, I dont think they will provide much info on this as this is partly done by Gomspace and with some involvement of possible ISRO.
SAS confirmed earlier this month that they have selected Gomspace as the equatorial Constellation constructor, estimated costs of the total contract is between AU$50-$75 million dollars, this you can assume includes testing - info on Gomspace;
However, if you are keen to learn about orbital testing environments, know that there are simulation/test software available such as MATLAB and many more other applications used in the space/aviation industry already. Many universities including NAS covering this subject too, consider;
