I really don't understand the randomization of people getting tests; us September 2019 Montreal folks are still sitting this one out! Sorry to rain on the parade, however - best of luck and hope you get it!
Its cic. They never followed any sequence even before pandemic. If we ask then they say its all related to application's complexity etc etc.
It purely depends on the officer which is what i could guess. Even few of 2020(first few months) applicants are getting tests hence it depends on that location and the officer. Interestingly some 2020Dec online applicants were issued and interview hence they dont follow any guidelines based on application received date.
cic is good at troubling us. Will have to deal with it.
One good thing is that if the start on an application(such as fingerprint requests or test) then they finish it fast but starting is the problem.