That would be an interesting way to prove that the charge point WASN'T working !
The connector, or socket, on any charge point should be dead when not plugged in to either a car or test box. It's why a test box is needed when doing any charge point installation, as without it there's no way to test that the charge point will provide power to a car, or that the required safety and protection systems are working properly.
If push comes to shove and anyone ever needs a charge point tested, I have both a charge point test box and an MFT, so can do all the required tests. I do this on a voluntary basis (no charge), but only around my local area as a rule (~10 miles West of Salisbury). I can't do a new installation, as that needs someone who's a member of one of the Part P cartels, and none of them will allow retired people to be members (plain and simple protectionism, and nothing at all to do with competence, IMHO, and no different in many ways to the way some trade unions operated a "closed shop" system years ago).