I had my Test in Scarborough on Feb 3rd...
You arrive, you show your yellow notice to appear for the test, they ask you to sit and wait till they call all people who are supposed to do their test that day to a room at the end of a hallway where everyone has to line up, have his notice and PR in hand to show before getting into the test room.
You get in, asked to sit anywhere, listen to the instruction ( very short ones that you should not cheat, passing is 15 out of 20).
You start your test. Once you are done you give your test and move to a next room where you sit and wait for your test to be graded and brought to that room.. there are 4 officers there to meet with people ... one of them will come to the table where all the files of the applicants are, he or she will pick up your file, call you to their table, you go there and they start asking you very general questions who you show them your passport, PR, landing document. Remember , you have to speak fluently and show your proficiency in English or French.. If everything goes well you will get a notice by the end of the interview to appear for the ceremony on the date they put on that pink document that you get at the end.. ( Not necessary that you will get the document for oath at the end though, as some offices they tend to mail it to you later ,,, depends on the officer. I got mine right away.. had my test on Feb 3d and the oath was on 23). In case the officer thinks there is a problem in your application like missing document, lack of English skill of even failing the test, they will let know about the next step. Good luck and wish you the best.