mono/tests/appdomain-unload-asmload.cs

   1 using System;
   2 using System.Threading.Tasks;
   3
   4 /* This is a regression test that checks that after an AssemblyLoad event fires
   5  * in a domain, the domain can be unloaded.  In bug # 56694, a
   6  * System.Reflection.Assembly object from the unloaded domain was kept alive
   7  * and crashed the GC.  */
   8 namespace AppDomainUnloadAsmLoad
   9 {
  10         class Program
  11         {
  12                 static void Main(string[] args)
  13                 {
  14                         // Need some threads in play
  15                         new Program().Run().Wait();
  16                 }
  17
  18                 private async Task Run()
  19                 {
  20                         var appDomain = AppDomain.CreateDomain("Test subdomain", null, AppDomain.CurrentDomain.SetupInformation);
  21                         try
  22                         {
  23                                 var driver = (AppDomainTestDriver)appDomain.CreateInstanceAndUnwrap(typeof(AppDomainTestDriver).Assembly.FullName,
  24                                                                                                     typeof(AppDomainTestDriver).FullName);
  25                                 driver.Test();
  26                         }
  27                         finally
  28                         {
  29                                 AppDomain.Unload(appDomain);
  30                         }
  31                 }
  32         }
  33
  34         class AppDomainTestDriver : MarshalByRefObject
  35         {
  36                 static AppDomainTestDriver()
  37                 {
  38                         // Needs a callback so that the runtime fires the
  39                         // AssembyLoad event for this domain and materializes a System.Reflection.Assembly
  40                         AppDomain.CurrentDomain.AssemblyLoad += CurrentDomain_AssemblyLoad;
  41                 }
  42
  43                 private static void CurrentDomain_AssemblyLoad(object sender, AssemblyLoadEventArgs args)
  44                 {
  45                 }
  46
  47                 internal void Test()
  48                 {
  49                         /* this can be any class from any assembly that hasn't
  50                          * already been loaded into the test domain.
  51                          * System.Xml.dll is good because all the tests link
  52                          * against it, but it's not otherwise used by this
  53                          * domain. */
  54                         var foo = default(System.Xml.XmlException);
  55                 }
  56     }
  57 }