Some job changes are currently different than the farther progressed servers due to towns like Hugel not being available yet.
Wizard testing is correct.
Hunter can be done using the iROWiki Classic Quest. The combat part of this quest is currently disabled for some reason.
Blacksmith can be mostly done using the iROWiki Classic Quest with the exceptions of the class change starts in Geffen Blacksmith Guild at Geffen 180,59 and the Bismarc NPC being located in the weapon shop in south Alberta.
Monk job change follows the Renewal job change quest.
Sage job change mostly appears to follows the Renewal job change quest but some questions may have been swapped around.