Testing an X-PRO2

Hi, I've found someone who wants to swap their X-PRO2 body for my XT20 and a few lenses.
My question is this: when he turns up with the camera later this week, how should I test it to make sure it all works correctly?

Obviously I'll take a few images, try it out with my lenses, take video, make sure all the buttons work, downloading to my computer/phone .. is there anything else you would recommend?

thanks
s/