I test my backups whenever I buy a new computer... I'll transfer the data from my latest backup to the new computer before I wipe my old computer. After I wipe

I test my backups whenever I buy a new computer... I'll transfer the data from my latest backup to the new computer before I wipe my old computer. After I wipe the old computer I will restore the data from the other backups to test them. I should do it more, but I buy a new computer every 2-3 years and testing the backup is most convenient when I have a "spare" computer on hand.