public void PermissionStateNone ()
{
PublisherIdentityPermission p = new PublisherIdentityPermission (PermissionState.None);
Assert.IsNotNull (p, "PublisherIdentityPermission(PermissionState.None)");
PublisherIdentityPermission copy = (PublisherIdentityPermission) p.Copy ();
SecurityElement se = p.ToXml ();
Assert.IsTrue (se.Attribute ("class").StartsWith (className), "ToXml-class");
Assert.AreEqual ("1", se.Attribute("version"), "ToXml-version");
Assert.IsNull (se.Attribute("Unrestricted"), "ToXml-Unrestricted");
Assert.IsNull (p.Certificate, "Certificate==null");
}