mcs/class/corlib/Test/System.Runtime.ExceptionServices/ExceptionDispatchInfoTest.cs

   1 //
   2 // ExceptionDispatchInfoTest.cs
   3 //
   4 // Authors:
   5 //      Marek Safar  <marek.safar@gmail.com>
   6 //
   7 // Copyright (C) 2011 Xamarin, Inc (http://www.xamarin.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 System;
  30 using NUnit.Framework;
  31 using System.Runtime.ExceptionServices;
  32 using System.Threading.Tasks;
  33 using System.Diagnostics;
  34
  35 namespace MonoTests.System.Runtime.ExceptionServices
  36 {
  37         [TestFixture]
  38         public class ExceptionDispatchInfoTest
  39         {
  40                 [Test]
  41                 public void Capture_InvalidArguments ()
  42                 {
  43                         try {
  44                                 ExceptionDispatchInfo.Capture (null);
  45                                 Assert.Fail ();
  46                         } catch (ArgumentNullException) {
  47                         }
  48                 }
  49
  50                 [Test]
  51                 public void Capture ()
  52                 {
  53                         var e = new ApplicationException ("test");
  54                         var edi = ExceptionDispatchInfo.Capture (e);
  55                         Assert.AreEqual (e, edi.SourceException);
  56                 }
  57
  58                 [Test]
  59                 public void Throw ()
  60                 {
  61                         Exception orig = null;
  62                         var t = Task.Factory.StartNew (() => {
  63                                 try {
  64                                         throw new ApplicationException ("aaa");
  65                                 } catch (Exception e) {
  66                                         orig = e;
  67                                         return ExceptionDispatchInfo.Capture (e);
  68                                 }
  69                         });
  70
  71                         var ed = t.Result;
  72                         var orig_stack = orig.StackTrace;
  73                         try {
  74                                 ed.Throw ();
  75                                 Assert.Fail ("#0");
  76                         } catch (Exception e) {
  77                                 var s = e.StackTrace.Split ('\n');
  78                                 Assert.AreEqual (4, s.Length, "#1");
  79                                 Assert.AreEqual (orig, e, "#2");
  80                                 Assert.AreNotEqual (orig_stack, e.StackTrace, "#3");
  81                         }
  82                 }
  83
  84                 [Test]
  85                 public void ThrowWithEmptyFrames ()
  86                 {
  87                         var edi = ExceptionDispatchInfo.Capture (new OperationCanceledException ());
  88                         try {
  89                                 edi.Throw ();
  90                                 Assert.Fail ("#0");
  91                         } catch (OperationCanceledException e) {
  92                                 Assert.IsFalse (e.StackTrace.Contains ("---"));
  93                                 Assert.AreEqual (2, e.StackTrace.Split (new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries).Length);
  94                         }
  95                 }
  96
  97                 [Test]
  98                 public void LastThrowWins ()
  99                 {
 100                         Exception e;
 101                         try {
 102                                 throw new Exception ("test");
 103                         } catch (Exception e2) {
 104                                 e = e2;
 105                         }
 106
 107                         var edi = ExceptionDispatchInfo.Capture (e);
 108
 109                         try {
 110                                 edi.Throw ();
 111                         } catch {
 112                         }
 113
 114                         try {
 115                                 edi.Throw ();
 116                         } catch (Exception ex) {
 117                         }
 118
 119                         try {
 120                                 edi.Throw ();
 121                         } catch (Exception ex) {
 122                                 var split = ex.StackTrace.Split (new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
 123                                 Assert.AreEqual (4, split.Length, "#1");
 124                                 Assert.IsTrue (split [1].Contains ("---"), "#2");
 125                         }
 126                 }
 127
 128                 [Test]
 129                 public void ThrowMultipleCaptures ()
 130                 {
 131                         Exception e;
 132                         try {
 133                                 throw new Exception ("test");
 134                         } catch (Exception e2) {
 135                                 e = e2;
 136                         }
 137
 138                         var edi = ExceptionDispatchInfo.Capture (e);
 139
 140                         try {
 141                                 edi.Throw ();
 142                         } catch (Exception e3) {
 143                                 edi = ExceptionDispatchInfo.Capture (e3);
 144                         }
 145
 146                         try {
 147                                 edi.Throw ();
 148                         } catch (Exception ex) {
 149                                 var split = ex.StackTrace.Split (new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
 150                                 Assert.AreEqual (7, split.Length, "#1");
 151                                 Assert.IsTrue (split [1].Contains ("---"), "#2");
 152                                 Assert.IsTrue (split [4].Contains ("---"), "#3");
 153                         }
 154                 }
 155
 156                 [Test]
 157                 public void StackTraceUserCopy ()
 158                 {
 159                         try {
 160                                 try {
 161                                         throw new NotImplementedException ();
 162                                 } catch (Exception e) {
 163                                         var edi = ExceptionDispatchInfo.Capture (e);
 164                                         edi.Throw();
 165                                 }
 166                         } catch (Exception ex) {
 167                                 var st = new StackTrace (ex, true);
 168                                 var split = st.ToString ().Split (new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
 169                                 Assert.AreEqual (4, split.Length, "#1");
 170                                 Assert.IsTrue (split [1].Contains ("---"), "#2");
 171                         }
 172                 }
 173         }
 174 }
 175