mcs/class/System/Test/System.IO.Compression/DeflateStreamCas.cs

   1 //
   2 // DeflateStreamCas.cs -CAS unit tests for System.IO.Compression.DeflateStream
   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 NUnit.Framework;
  31
  32 using System;
  33 using System.IO;
  34 using System.IO.Compression;
  35 using System.Security;
  36 using System.Security.Permissions;
  37 using System.Threading;
  38
  39 namespace MonoCasTests.System.IO.Compression {
  40
  41         [TestFixture]
  42         [Category ("CAS")]
  43         public class DeflateStreamCas {
  44
  45                 private const int timeout = 30000;
  46                 private string message;
  47
  48                 static ManualResetEvent reset;
  49
  50                 [TestFixtureSetUp]
  51                 public void FixtureSetUp ()
  52                 {
  53                         // this occurs with a "clean" stack (full trust)
  54                         reset = new ManualResetEvent (false);
  55                 }
  56
  57                 [TestFixtureTearDown]
  58                 public void FixtureTearDown ()
  59                 {
  60                         reset.Close ();
  61                 }
  62
  63                 [SetUp]
  64                 public void SetUp ()
  65                 {
  66                         if (!SecurityManager.SecurityEnabled)
  67                                 Assert.Ignore ("SecurityManager.SecurityEnabled is OFF");
  68                 }
  69
  70                 // async tests (for stack propagation)
  71
  72                 private void ReadCallback (IAsyncResult ar)
  73                 {
  74                         DeflateStream s = (DeflateStream)ar.AsyncState;
  75                         s.EndRead (ar);
  76                         try {
  77                                 // can we do something bad here ?
  78                                 Assert.IsNotNull (Environment.GetEnvironmentVariable ("USERNAME"));
  79                                 message = "Expected a SecurityException";
  80                         }
  81                         catch (SecurityException) {
  82                                 message = null;
  83                                 reset.Set ();
  84                         }
  85                         catch (Exception e) {
  86                                 message = e.ToString ();
  87                         }
  88                 }
  89
  90                 [Test]
  91                 [EnvironmentPermission (SecurityAction.Deny, Read = "USERNAME")]
  92                 public void AsyncRead ()
  93                 {
  94                         DeflateStream cs = new DeflateStream (new MemoryStream (), CompressionMode.Decompress);
  95                         message = "AsyncRead";
  96                         reset.Reset ();
  97                         IAsyncResult r = cs.BeginRead (new byte[0], 0, 0, new AsyncCallback (ReadCallback), cs);
  98                         Assert.IsNotNull (r, "IAsyncResult");
  99                         if (!reset.WaitOne (timeout, true))
 100                                 Assert.Ignore ("Timeout");
 101                         Assert.IsNull (message, message);
 102                         cs.Close ();
 103                 }
 104
 105                 private void WriteCallback (IAsyncResult ar)
 106                 {
 107                         DeflateStream s = (DeflateStream)ar.AsyncState;
 108                         s.EndWrite (ar);
 109                         try {
 110                                 // can we do something bad here ?
 111                                 Assert.IsNotNull (Environment.GetEnvironmentVariable ("USERNAME"));
 112                                 message = "Expected a SecurityException";
 113                         }
 114                         catch (SecurityException) {
 115                                 message = null;
 116                                 reset.Set ();
 117                         }
 118                         catch (Exception e) {
 119                                 message = e.ToString ();
 120                         }
 121                 }
 122
 123                 [Test]
 124                 [EnvironmentPermission (SecurityAction.Deny, Read = "USERNAME")]
 125                 public void AsyncWrite ()
 126                 {
 127                         DeflateStream cs = new DeflateStream (new MemoryStream (), CompressionMode.Compress);
 128                         message = "AsyncWrite";
 129                         reset.Reset ();
 130                         IAsyncResult r = cs.BeginWrite (new byte[1], 0, 1, new AsyncCallback (WriteCallback), cs);
 131                         Assert.IsNotNull (r, "IAsyncResult");
 132                         if (!reset.WaitOne (timeout, true))
 133                                 Assert.Ignore ("Timeout");
 134                         Assert.IsNull (message, message);
 135 // the Close is currently buggy in Mono
 136 //                      cs.Close ();
 137                 }
 138         }
 139 }
 140