Ideally, that would be a concern of the peer review. When I finished my undergraduate degree, I had to present a paper describing a program. I had to show that program working as part of my presentation. Anyone reading my "paper" and knowing I got a passing grade already knows the code I supplied works with the data I supplied, so I don't think it's that important for them to run it themselves.

Essentially, this would be like trying to reproduce a paper and starting by checking if their mathematical apparatus is correct. It's not useless, and it can help detect fraud or just plain bad peer review of course, but I wouldn't call that an attempt to reproduce their results per se.