I'm new to the site. I assume we can contribute so what I'd like to get going is that each language has a Testing subtree
So for example you could click on say React and get:
React/Testing/Mocha
React/Testing/Ava
React/Testing/Jest
These would consolidate various sources of test examples...something that's scattered through many repos and blog posts and so this site would be the perfect place to bring all those examples together IMO.