class/corlib/Test/System.Threading/WaitHandleCas.cs

   1 //
   2 // WaitHandleCas.cs - CAS unit tests for System.Threading.WaitHandle
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using NUnit.Framework;
  30
  31 using System;
  32 using System.Reflection;
  33 using System.Security;
  34 using System.Security.Permissions;
  35 using System.Threading;
  36
  37 namespace MonoCasTests.System.Threading {
  38
  39         // "test" inheritance - this will (or should) always works as we have
  40         // UnmanagedCode permission when loading the assembly. So we're proving
  41         // this works - not proving when it shouldn't works :-/
  42
  43         public class NonAbstractWaitHandle : WaitHandle {
  44         }
  45
  46         public class CasWaitHandle : WaitHandle {
  47                 public override IntPtr Handle {
  48                         get { return base.Handle; }
  49                         set { base.Handle = value; }
  50                 }
  51         }
  52
  53         [TestFixture]
  54         [Category ("CAS")]
  55         public class WaitHandleCas {
  56
  57                 [SetUp]
  58                 public void SetUp ()
  59                 {
  60                         if (!SecurityManager.SecurityEnabled)
  61                                 Assert.Ignore ("SecurityManager.SecurityEnabled is OFF");
  62                 }
  63
  64                 // we use reflection to call WaitHandle as the Handle property is protected by
  65                 // a LinkDemand (which will be converted into full demand, i.e. a stack walk)
  66                 // when reflection is used (i.e. it gets testable).
  67
  68                 [Test]
  69                 [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
  70                 [ExpectedException (typeof (SecurityException))]
  71                 public void WaitHandle_Handle ()
  72                 {
  73                         MethodInfo mi = typeof (NonAbstractWaitHandle).GetProperty ("Handle").GetSetMethod ();
  74                         NonAbstractWaitHandle wh = new NonAbstractWaitHandle ();
  75                         mi.Invoke (wh, new object [1] { IntPtr.Zero });
  76                 }
  77
  78                 [Test]
  79                 [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
  80                 public void CasWaitHandle_Handle ()
  81                 {
  82                         MethodInfo mi = typeof (CasWaitHandle).GetProperty ("Handle", BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly).GetSetMethod ();
  83                         CasWaitHandle cwh = new CasWaitHandle ();
  84                         mi.Invoke (cwh, new object [1] { IntPtr.Zero });
  85                         // note: this works because CasWaitHandle doesn't have a LinkDemand on Handle
  86                         // and yes this is a reason why LinkDemand are dangereous
  87                 }
  88         }
  89 }