public void PermissionStateNone ()
{
GacIdentityPermission gip = new GacIdentityPermission (PermissionState.None);
SecurityElement se = gip.ToXml ();
// only class and version are present
Assert.AreEqual (2, se.Attributes.Count, "Xml-Attributes");
Assert.IsNull (se.Children, "Xml-Children");
GacIdentityPermission copy = (GacIdentityPermission)gip.Copy ();
Assert.IsFalse (Object.ReferenceEquals (gip, copy), "ReferenceEquals");
}