Snot Box is correct about 2 of the 3 exams required, but a third is required.
Asside from the SARON, and SAMRA, you will also have to write the INRAT. This is for the Group 1 instrument rating.
And you also have to take a checkride. It is a multi-IFR ride that consists of at least 1 ILS app. 1 NDB app. and a hold. This plus the INRAT will give you a Group 1 instrument rating. Depending on who your Transport Canada examiner is, it can be relatively painless, or the exact opposite. All checkrides in Canada are on the point system. You have to make a certain "score" on it to pass.
note. On NDB approaches in Canada, the requirements are plus 50 Ft., minus 0 Ft., on the altitude, and plus or minus 5 degrees, on the heading. The pass "bar" is a little higher in Canada, than in the US.
Good Luck