What do you need research for? If you don't test your code, how do you know it works, at all? Obviously you do test it, so why not have those tests written in c

What do you need research for? If you don't test your code, how do you know it works, at all? Obviously you do test it, so why not have those tests written in code, so they can be repeated at any time and catch regressions? The benefits are entirely obvious.