2000 Jeep Cherokee Won't start

Electrical problem
2000 Jeep Cherokee 6 cyl Two Wheel Drive Automatic 165k miles

My Jeep won't start. When the key is turned I get a single click. No dimming of lights when attempted. Lights and windows work fine. Charged and attempted jumping with no resolution, just still a single click. All battery connections seem fine. Whacked the starter with a rubber mallet, just clicks still. Removed starter and took down to local auto supply and they bench tested and said starter was fine. Is there a way that the solenoid is bad but the starter still tested fine? I think on my model the solenoid is attached to the starter motor. This is probably a dumb question but is there another solenoid somewhere and if so, how do I test if this is the problem?