For color belts: In addition to the basics and hyungs (Ki-cho, Pyung Ahns, Palgwes, Nohai, Naihanchi, and Sipsoo), we are also tested on vital points, one steps, 7-point handshake, peaceful resistor with pressure points, police take-alongs, take downs, submissions, knife-hand sets, sticky-hand sets, knocking, knife attack defense, gun defense and Korean terminology.
For 1st Dan add the Koryo and Bassai forms. Beyond 1st Dan I don't know.