How to verify compressor is normal on the desk

My car A/C leaking was at low pressure A/C line connection to compressor, and high pressure line inlet to condenser where two o-ring was missing. I disconnected compressor, and A/C line fittings to rebuild system. I want to know how to determine a compressor function normal without leaking. I tested current circuit was on the compressor, but I do not know if compressor function is normal or leaking.
I am thinking to measure pressure on a compressor on the desk to see whether leaking place on the compressor using radiator coolant pressure tester (on the radiator), purge air into from one compressor end and lock another mouth with rubber cap, and see if compressor leaking occur.
If there is good way to test compressor leak on a table at disconnected state before install?
Thanks for your comment and instruction.