I guess I didn't explain myself well enough. Give candidates the entire file and tell them how it will be run. Then it's trivial for them to develop on their lo

I guess I didn't explain myself well enough. Give candidates the entire file and tell them how it will be run. Then it's trivial for them to develop on their local machine. I'm positive most of the failures you'll get are syntax related. Let people check their own! If you want to check their syntax for them, that is going to be a lot of work and make it harder to add new languages. Include the unit tests with what you give the candidate so you are not just limited to string output if you want, but you could give just them the formatter too. Keep up the good work though, it was actually quite fun doing a couple of the tests :)