The only check rides I've done in darkness has been the Instrument ride. It's pretty effective at seeing how an applicant will do on instruments without actually being in the clouds.
One issue that comes up is remembering to turn on the approach and runway lights. It may not be an issue if you're flying at a towered airport but at the non towered, the lights are up to you. I usually pop the lights up with 7 clicks at Glideslope intercept or FAF inbound. I'll make a position report first just to make sure I don't tick off another pilot in the pattern.
If you get down to the DA or MAP and you don't see the lit runway, go-around. There are several accidents where pilots have attempted to land on an unlit runway only to miss the runway entirely or hit something. Not good.