Over at the German Aerospace Center, humans and robots enter into combat pretty regularly. This time, they're testing out a robotic arm to see if it responds to abuse the same way a human arm does. Over at IEEE's Automoton blog, Erica Guizzo explains:

It's called the DLR Hand Arm System. It has an anthropomorphic design and packs 52 motors, ultra-miniaturized control electronics, a supercapacitor-based power supply, and a web of high-strength tendons. But what makes it stand out compared to conventional systems is its ability to withstand collisions, thanks to ingeniously designed joints and actuators that can absorb and dissipate energy, much like our own arms and hands do.

You say "test," I say "the thing that robots will later use to justify busting our heads."

Read more about about it via IEEE's Automoton