public void ProcedureCodes_GetProcCodesByTreatmentArea_HiddenCategories()
{
string suffix = MethodBase.GetCurrentMethod().Name;
List <ProcedureCode> listMouthProcCodesOld = ProcedureCodes.GetProcCodesByTreatmentArea(false, TreatmentArea.Mouth, TreatmentArea.None);
Def defCat = Defs.GetDef(DefCat.ProcCodeCats, listMouthProcCodesOld.FirstOrDefault(x => x.ProcCat > 0 &&
!Defs.GetHidden(DefCat.ProcCodeCats, x.ProcCat)).ProcCat);
defCat.IsHidden = true;
Defs.Update(defCat);
Defs.RefreshCache();
//ProcedureCodes.RefreshCache();
List <ProcedureCode> listMouthProcCodesNew = ProcedureCodes.GetProcCodesByTreatmentArea(false, TreatmentArea.Mouth, TreatmentArea.None);
defCat.IsHidden = false;
Defs.Update(defCat);
Defs.RefreshCache();
Assert.AreNotEqual(listMouthProcCodesOld.Count, listMouthProcCodesNew.Count);
}