How would I test an AC pump that is not filled and there is a hole in the line? I plan on taking it off and selling the set-up if I can figure out if it works.

make sure the pulley spins freely and it's not locked up.

 

might have to engage the clutch (just give it 12 volts) and rotate the compressor by hand with your fingers over the port. if you hear/feel air pressure pushing out past your finger, then it's making compression and 99% probably works fine.