public void PermissionState_Unrestricted ()
		{
			PermissionState ps = PermissionState.Unrestricted;
			PerformanceCounterPermission pcp = new PerformanceCounterPermission (ps);
			Assert.AreEqual (0, pcp.PermissionEntries.Count, "PermissionEntries");
			Assert.IsTrue (pcp.IsUnrestricted (), "IsUnrestricted");

			SecurityElement se = pcp.ToXml ();
			// only class and version are present
			Assert.AreEqual ("true", se.Attribute ("Unrestricted"), "Xml-Unrestricted");
			Assert.IsNull (se.Children, "Xml-Children");

			PerformanceCounterPermission copy = (PerformanceCounterPermission)pcp.Copy ();
			Assert.IsFalse (Object.ReferenceEquals (pcp, copy), "ReferenceEquals");
			Assert.AreEqual (pcp.PermissionEntries.Count, copy.PermissionEntries.Count, "copy-PermissionEntries");
			Assert.AreEqual (pcp.IsUnrestricted (), copy.IsUnrestricted (), "copy-IsUnrestricted ()");
		}
		public void FromXml_NoVersion ()
		{
			PerformanceCounterPermission pcp = new PerformanceCounterPermission (PermissionState.None);
			SecurityElement se = pcp.ToXml ();

			SecurityElement w = new SecurityElement (se.Tag);
			w.AddAttribute ("class", se.Attribute ("class"));
			pcp.FromXml (w);
		}
		public void FromXml_WrongVersion ()
		{
			PerformanceCounterPermission pcp = new PerformanceCounterPermission (PermissionState.None);
			SecurityElement se = pcp.ToXml ();
			se.Attributes.Remove ("version");
			se.Attributes.Add ("version", "2");
			pcp.FromXml (se);
		}
		public void FromXml_NoClass ()
		{
			PerformanceCounterPermission pcp = new PerformanceCounterPermission (PermissionState.None);
			SecurityElement se = pcp.ToXml ();

			SecurityElement w = new SecurityElement (se.Tag);
			w.AddAttribute ("version", se.Attribute ("version"));
			pcp.FromXml (w);
			// doesn't even care of the class attribute presence
		}
		public void FromXml_WrongClass ()
		{
			PerformanceCounterPermission pcp = new PerformanceCounterPermission (PermissionState.None);
			SecurityElement se = pcp.ToXml ();

			SecurityElement w = new SecurityElement (se.Tag);
			w.AddAttribute ("class", "Wrong" + se.Attribute ("class"));
			w.AddAttribute ("version", se.Attribute ("version"));
			pcp.FromXml (w);
			// doesn't care of the class name at that stage
			// anyway the class has already be created so...
		}
		public void FromXml_WrongTagCase ()
		{
			PerformanceCounterPermission pcp = new PerformanceCounterPermission (PermissionState.None);
			SecurityElement se = pcp.ToXml ();
			se.Tag = "IPERMISSION"; // instead of IPermission
			pcp.FromXml (se);
			// note: normally IPermission classes (in corlib) DO care about the
			// IPermission tag
		}