Re: NUnit core assembly referencing

Hi Charlie,
 
> Writing addins that will work across multiple versions of NUnit was> something I had> been holding off till 3.0, since the manner of loading assemblies will> change with> that release. That said, it's reasonable to explore the problem now - if> nothing> else, it will tell us how to deal with it later.> > Bear in mind that your config file changes only affect the primary> AppDomain.> CoreExtensions runs in the test AppDomain. However, NUnit actually forces> the nunit.core and nunit.core.interfaces into the test AppDomain after the> test domain is unable to load them. Therefore, it's (ironically) important> that> they NOT be available to the test appdomain.
 
I think I follow this, but could you explain it a bit more?: when you say "test AppDomain after the test domain is unable..." do you mean the second one to be the primary domain?
 
So, I don't want to change NUnit's app.config as I don't want to load them into the primary app domain. How would you load them into the test appdomain - do you do a Assembly.LoadFrom(), and if so, can you set up stuff like binding redirects?
 
> If you have your attributes> in your addin assembly, rather than a separate assembly, you will break> this mechanism. I'll assume you don't.> 
 
I have my attributes in a separate assembly Taumuon.Maslina.dll (which users reference), my addin assembly Taumuon.Maslina.Addin.dll ALSO references this assembly, but the users test assembly doesn't. Does the fact that my addin assembly references the attributes assembly mean that this mechanism is broken?
 
Without any App.Config, the failure I get is in AddinManager.Register() - I get a FileLoadException on loading Taumuon.Maslina.Addin.dll when it tries to call Assembly.GetExportedTypes(). It's unable to find NUnit.Core.dll v2.4.6.0.
 
The call stack is:
 
> nunit.util.dll!NUnit.Util.AddinManager.Register(string path = "D:\\FILES\\GAZSTUFF\\Rakija\\NUnit2.4.7\\NUnit-2.4.7-src\\src\\GuiRunner\\nunit-gui-exe\\bin\\Debug2005\\addins\\Taumuon.Maslina.AddIn.dll") Line 60 + 0x9 bytes C#  nunit.util.dll!NUnit.Util.AddinManager.RegisterAddins() Line 47 + 0x17 bytes C#  nunit.util.dll!NUnit.Util.AddinManager.InitializeService() Line 84 + 0x7 bytes C#  nunit.util.dll!NUnit.Util.ServiceManager.InitializeServices() Line 62 + 0x9 bytes C#  nunit-gui-runner.dll!NUnit.Gui.AppEntry.Main(string[] args = {Dimensions:[0]}) Line 70 + 0x10 bytes C#  nunit.exe!NUnit.Gui.Class1.Main(string[] args = {Dimensions:[0]}) Line 21 + 0x7 bytes C#
If I change the App.Config as I mentioned, it actually manages to register the addin, but then fails on loading my sample assembly that references Taumuon.Maslina.dll and Taumuon.Maslina.Test.dll.
 
The callstack is:
 
> nunit.core.dll!NUnit.Core.CoreExtensions.InstallAddins() Line 153 + 0x13 bytes C#  nunit.core.dll!NUnit.Core.CoreExtensions.InitializeService() Line 208 + 0x7 bytes C#  nunit.core.dll!NUnit.Core.RemoteTestRunner.Load(NUnit.Core.TestPackage package = {NUnit.Core.TestPackage}) Line 33 + 0x10 bytes C#  [External Code]   nunit.util.dll!NUnit.Util.TestDomain.Load(NUnit.Core.TestPackage package = {NUnit.Core.TestPackage}) Line 57 + 0x15 bytes C#  nunit.util.dll!NUnit.Util.TestLoader.LoadTest(string testName = null) Line 541 + 0x1d bytes C#  nunit.uikit.dll!NUnit.UiKit.TestLoaderUI.OpenProject(System.Windows.Forms.Form owner = {NUnit.Gui.NUnitForm}, string testFileName = "D:\\FILES\\GAZSTUFF\\Rakija\\Taumuon.Maslina.1.0.0.0\\Taumuon.Maslina.Sample\\bin\\Debug\\Taumuon.Maslina.Sample.dll", string configName = null, string testName = null) Line 82 + 0xd bytes C#  nunit-gui-runner.dll!NUnit.Gui.NUnitForm.NUnitForm_Load(object sender = {NUnit.Gui.NUnitForm}, System.EventArgs e = {System.EventArgs}) Line 1334 + 0x30 bytes C#
 
I hope this gives you some ideas? I don't mind rebuilding my addins against each new version of NUnit for now though.
 
> The failure in CoreExtensions is probably happening at the point where> the implemented interface is compared to the actual interface. Can you> get enough of a trace to see if that's so?> > Charlie> 
Thanks!
 
Gary
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