Couple of compacts

Mum handed me a bag of random stuff she found after clearing out my late Dad’s drawers. Sadly not a collection of rare Leica exotica - not surprised as most of his photos were accidental pictures of his own feet RIP Jake!

Anyway found these 2 - Nikon L35 AF and Fuji DL-80. Could see both appealing to someone but have a question before I advertise…that is how can I tell if they’re in proper working order?

Short of buying film, taking a roll and sending them off for developing? They both power up with new batteries and shutter makes the noise but other than that…wouldn’t want to sell them to find they don’t actually take pictures…