I wonder if everyone actually does initial testing and bug fixing after committing, because otherwise any effect of programming language choice might be gone be

I wonder if everyone actually does initial testing and bug fixing after committing, because otherwise any effect of programming language choice might be gone before the code reaches the commit logs. I'm not sure it makes sense to consider code correctness separately from productivity. You can probably get code written in any language to roughly similar levels of correctness. But how much work does it take to get there? That's what I'm really interested in.