Yes, it is a requirement when...
While I can't quote specific, individual airline SOPs, I can cite Airbus FCOM 3.03.06 P6.
Yes, if the HFs are to be used for that flight, they need to be checked before departure.
At my old airline (from which I retired), it was a requirement (both on Airbus and Boeing aircraft) to do so....if the HFs were to be used for that flight.
By the way, while you're screwing with the HFs, you can set your watch and the aircraft clock (if necessary). This requirement is basic instrument flying......(setting the clock...or checking for accuracy). This was, again, not only my old airline's SOP, but the Airbus and Boeing SOP, as well.
Fly safe,
PantLoad