Wernher von Braun, his mentor Herman Oberth, ... and nobody gives a fuck from where they really came from and that they were SS officers. What is actually more interesting that von Braun and also Oberth states really clearly that we have been helped by the people of other worlds in certain scientific fields. See also project Paperclip. Do not be ignorant.

I wonder how much testing they did for Apollo mission.

Probably there are just stored images in svn or something. However great use of powerful tools like cvs, svn, git. I would not be surprised if Apple would do something like this and include it into the Mac OS; following Windows announcement that they developed new technology for browsing website through time, while there would already working alpha, beta in Linux.