mcs/class/corlib/Test/System.Threading/ExecutionContextCas.cs

   1 //
   2 // ExecutionContextCas.cs - CAS Unit Tests for ExecutionContext
   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
  30 using System;
  31 using System.Security;
  32 using System.Security.Permissions;
  33 using System.Threading;
  34
  35 using NUnit.Framework;
  36
  37 namespace MonoCasTests.System.Threading {
  38
  39         [TestFixture]
  40         [Category ("CAS")]
  41         public class ExecutionContextCas {
  42
  43                 static bool success;
  44
  45                 static void Callback (object o)
  46                 {
  47                         new SecurityPermission (SecurityPermissionFlag.UnmanagedCode).Demand ();
  48                         success = (bool)o;
  49                 }
  50
  51                 [SetUp]
  52                 public void SetUp ()
  53                 {
  54                         if (!SecurityManager.SecurityEnabled)
  55                                 Assert.Ignore ("SecurityManager isn't enabled");
  56
  57                         success = false;
  58                 }
  59
  60                 [TearDown]
  61                 public void TearDown ()
  62                 {
  63                         if (ExecutionContext.IsFlowSuppressed ())
  64                                 ExecutionContext.RestoreFlow ();
  65                 }
  66
  67                 private void Thread_Run_Empty ()
  68                 {
  69                         Assert.IsFalse (success, "pre-check");
  70                         ExecutionContext.Run (ExecutionContext.Capture (), new ContextCallback (Callback), true);
  71                         Assert.IsTrue (success, "post-check");
  72                 }
  73
  74                 [Test]
  75                 public void Run_Empty ()
  76                 {
  77                         Thread t = new Thread (new ThreadStart (Thread_Run_Empty));
  78                         t.Start ();
  79                         t.Join ();
  80                 }
  81
  82                 [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
  83                 private ExecutionContext GetExecutionContextUnmanaged ()
  84                 {
  85                         return ExecutionContext.Capture ();
  86                         // the Deny disappears with this stack frame but we got a capture of it
  87                 }
  88
  89                 private void Thread_Run_UnmanagedCode ()
  90                 {
  91                         bool result = false;
  92                         Assert.IsFalse (success, "pre-check");
  93                         try {
  94                                 ExecutionContext ec = GetExecutionContextUnmanaged ();
  95                                 // run with the captured security stack (i.e. deny unmanaged)
  96                                 ExecutionContext.Run (ec, new ContextCallback (Callback), true);
  97                         }
  98                         catch (SecurityException) {
  99                                 result = true;
 100                         }
 101                         finally {
 102                                 Assert.IsFalse (success, "post-check");
 103                                 Assert.IsTrue (result, "Result");
 104                         }
 105                 }
 106
 107                 [Test]
 108                 public void Run_UnmanagedCode ()
 109                 {
 110                         Thread t = new Thread (new ThreadStart (Thread_Run_UnmanagedCode));
 111                         t.Start ();
 112                         t.Join ();
 113                 }
 114
 115                 private void Thread_Run_UnmanagedCode_SuppressFlow_BeforeCapture ()
 116                 {
 117                         bool result = false;
 118                         Assert.IsFalse (success, "pre-check");
 119                         AsyncFlowControl afc = ExecutionContext.SuppressFlow ();
 120                         try {
 121                                 ExecutionContext ec = GetExecutionContextUnmanaged ();
 122                                 ExecutionContext.Run (ec, new ContextCallback (Callback), true);
 123                         }
 124                         catch (InvalidOperationException) {
 125                                 result = true;
 126                         }
 127                         finally {
 128                                 Assert.IsFalse (success, "post-check");
 129                                 afc.Undo ();
 130                                 Assert.IsTrue (result, "Result");
 131                         }
 132                 }
 133
 134                 [Test]
 135                 public void Run_UnmanagedCode_SuppressFlow_BeforeCapture ()
 136                 {
 137                         Thread t = new Thread (new ThreadStart (Thread_Run_UnmanagedCode_SuppressFlow_BeforeCapture));
 138                         t.Start ();
 139                         t.Join ();
 140                 }
 141
 142                 private void Thread_Run_UnmanagedCode_SuppressFlow_AfterCapture ()
 143                 {
 144                         bool result = false;
 145                         Assert.IsFalse (success, "pre-check");
 146                         ExecutionContext ec = GetExecutionContextUnmanaged ();
 147                         AsyncFlowControl afc = ExecutionContext.SuppressFlow ();
 148                         try {
 149                                 ExecutionContext.Run (ec, new ContextCallback (Callback), true);
 150                         }
 151                         catch (SecurityException) {
 152                                 result = true;
 153                         }
 154                         finally {
 155                                 Assert.IsFalse (success, "post-check");
 156                                 afc.Undo ();
 157                                 Assert.IsTrue (result, "Result");
 158                         }
 159                 }
 160
 161                 [Test]
 162                 public void Run_UnmanagedCode_SuppressFlow_AfterCapture ()
 163                 {
 164                         Thread t = new Thread (new ThreadStart (Thread_Run_UnmanagedCode_SuppressFlow_AfterCapture));
 165                         t.Start ();
 166                         t.Join ();
 167                 }
 168         }
 169 }
 170