Multiple types of test runs would slow down the opening, but that is what they do in real life. The number of test runs a coaster train makes each morning between maintenance checking and ride op testing is (should be) a high number. Ie) 5-6 runs per train before actual ride opening.
So, I would think it would be cool to have two test buttons. One for "Block Checks" stopping a train in each section, and one in full operating mode. That way if you don't want to waste time on a block check, you don't have to, but if you want to make sure it gets all the way around, it is still an option.