In the past, when I have gotten a new camera, I have just done a black test, or what some call a "cap test". You equip a lens, put on the lens cap, then take a series of exposures at the full range of possible ISOs in raw. The resulting images will reveal any bad pixels or glaring sensor problems. Fine.
However, I just got new OM-D M1 II which for me is a fairly pricey camera, so I would like to do more testing than just a black test to make sure it is ok. What tests should I do?