public void PermissionSet()
        {
            string        permissionCSV;
            PermissionSet ps = new PermissionSet();

            ps.Add("permission1");
            ps.Add("permission2");
            ps.Add("permission3");
            permissionCSV = string.Join(",", ps.Permissions);
            var byteArray = ps.ExportPermissions();

            ps.Import(byteArray);
            Assert.Equal(permissionCSV, string.Join(",", ps.Permissions));
        }