I’m not sure if this is the right place to share it, but when digging in the source code of the engine I found some interesting files, which looks like an automation tests files but written using some cooler kind of API, different than described in documentation. I couldn’t find any informations about it… so I wrote something by myself 
Enjoy: http://zompi.pl/unreal-engine-4-automation-tests-new-api
I’m also curious if this is something experimental or it will end as an official way of automation testing in ue4. I like it really much so far.