I have an entity in Domain Model. This entity has ChangeStatus(StatusesEnum newStatus) method.
StatusesEnum has more then 10 members. They can be changed only in correct order, for example StatusesEnum.First can be changed to Second and Third, Third can be changed to Fourth only, Fourth can be changed to Fifth and Seventh etc.   

ChangeStatus method is throwing exception for wrong transitions.
I don't think that testing all cases is right (maybe I'm wrong :)), however how can I write test for checking right transitions order.