With LDNS installed run ldns-testns -p <your prefered port> test.zone and use the client you want to test to query the server.
The supported EDNS opts are available at the following query names:
llq.example.comnsid.example.comdau.example.comdhu.example.comn3u.example.comecs.example.comexpire.example.comcookie.example.comkeepalive.example.compadding.example.comchain.example.comkeytag.example.comede.example.com