Hi Wissamd,
I did not ear anything about that rule, the day you go to your test you will have an interview whit a person of CIC (no a judge) You have to show to that person all your documents, after that you will give your test and then if you pass it you have to wait 4 or 6 months and they will send you a letter to go to the ceremony, the time dependents of the province, if you do not pass the test you will have an interview with a judge.
I hope this information help you.
Good luck.