In Ontario, Canada a new driver must hold a G1 licence for a minimum of 12 months before attempting the G1 road test but the level 1 license is valid for up to 5 years. To move up to level 2 or G2 status you must pass a road test.
Your G1 or G2 license will expire 5 years after you received your original G1 licence. If you have not passed the G1 and G2 road tests and earned a full G license by within 5 years you will have to need to redo the knowledge test to get a G1 and/or retake the G1 road test to get your G2.
Get a Canadian car insurance quote so that you are properly insured with your G1 or G2 licence.