Did my test yesterday. We are 4, 2 got 19 and 2 got 20. the test is easy, study the book, make your own notes and practice the on-line questions and quizzes. The whole thing took 2 hours, let us inside 830 and left 1030 (waiting period between test instructions and to call for the interview about 50 minutes)
The interview is basically to verify the documents, you need to take all originals like PR, driver's license, health card, passports, landing paper, proof of language.
Interview questions like.. where do you work? do you work full time? do you file your income tax?
It was smooth.. so no need to worry. Wish everyone good luck and wish our Oath letter arrive soon