Re: UTF8 exception in Nunit 2.4.8

Yes, it is definitely caused by Console.Out being "damaged" somehow.  It 
is definitely happening because of the refrence to Console.Out.

- I have not run any of my tests prior to this point.  I was using the 
/run command-line option, but if I remove that, this happens when I 
click "run" on any of the tests.
- I tried this against the samples and it is happening on those too :)
- Environment:
Visual Studio 2005 on Windows XP
Version 8.0.50727.762 (SP.050727-7600)
It should be using .NET 2.0.50727(I have 3.0 and 3.5 installed too)

I bet that's it... I installed the Microsoft Platform SDK over the 
weekend, and the last time I ran a unit test was just prior to that.

Okay... so I removed all references to Console.Out and Console.Error and 
Console.Write from the entire project, just to see if that fixed it.  
Now I get the exact same exception when nunit tries to create a 
StreamWriter on line 27 of XmlResultVisitor.cs
            xmlWriter = new XmlTextWriter( new StreamWriter(fileName, 
false, System.Text.Encoding.UTF8) );
I changed that to:
            StreamWriter foo = new StreamWriter(fileName, false, 
System.Text.Encoding.UTF8);
            xmlWriter = new XmlTextWriter( foo );
and it fails on the StreamWriter constructor:
   at System.RuntimeMethodHandle.GetName()
   at System.Reflection.RuntimeMethodInfo.get_Name()
   at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat)
   at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
   at System.IO.StreamWriter.Init(Stream stream, Encoding encoding, 
Int32 bufferSize)
   at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding 
encoding, Int32 bufferSize)
   at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding 
encoding)
   at NUnit.Util.XmlResultVisitor..ctor(String fileName, TestResult 
result) in 
C:\svn\Scratch\wgarrison\NUnit-2.4.8-src\src\ClientUtilities\util\XmlResultVisitor.cs:line 
27
   at NUnit.Util.TestLoader.SaveLastResult(String fileName) in 
C:\svn\Scratch\wgarrison\NUnit-2.4.8-src\src\ClientUtilities\util\TestLoader.cs:line 
712
   at 
NUnit.Util.TestLoader.NUnit.Core.EventListener.RunFinished(TestResult 
testResult) in 
C:\svn\Scratch\wgarrison\NUnit-2.4.8-src\src\ClientUtilities\util\TestLoader.cs:line 
262
(line numbers might be different due to me commenting-out sections)

I am beginning to think this is a Microsoft problem... but I have other 
apps that can construct streams and use console output just fine.  So 
I'd like to dig some more to find out what nunit is doing that might be 
triggering this.  In my original post, I highlight the point at which 
console.out (and console.error too) "break" but I can't see how or why 
it happens.  Any guesses as to what is happening in step 2 (see original 
post) that would affect Console.Out?  I'm wondering if it has something 
to do with remoting, because those objects all derive from 
MarshalByRefObject and the InitializeLifetimeService (which returns 
null) is called at that point.  Why do these objects need to derive from 
that base class?  Why override that method?  (Yes, I know that should 
have nothing to do with Console output... it's just the only lead I can 
think of right now)

Thanks for your help.


Charlie Poole wrote:
> In the very last lie of your stack trace, we can see that
> NUnit is in the constructor of it's ContextHolder class.
>
> The ContextHolder is trying to save the value of Console.Out
> so it can be restored later. An exception is being thrown,
> within the .NET code. 
>
> Have any of your tests run before this point? That would
> seem to be the only way that the value of Console.Out
> could get messed up.
>
> Also, what's your environment?
>
> Charlie
>
>   
>> -----Original Message-----
>> From: [email protected] 
>> [mailto:[email protected]] On Behalf 
>> Of William Garrison
>> Sent: Thursday, July 24, 2008 7:23 PM
>> To: [email protected]
>> Subject: [Nunit-users] UTF8 exception in Nunit 2.4.8
>>
>> I am trying to run NUnit GUI 2.4.8 on a DLL that I created and I get:
>>    System.ArgumentException:   Message="The UTF8 string 
>> passed in could 
>> not be converted to Unicode."
>>    at System.RuntimeMethodHandle.GetName()
>>    at System.Reflection.RuntimeMethodInfo.get_Name()
>>    at System.Diagnostics.StackTrace.ToString(TraceFormat traceFormat)
>>    at System.Environment.GetStackTrace(Exception e, Boolean 
>> needFileInfo)
>>    at System.IO.StreamWriter.Init(Stream stream, Encoding encoding,
>> Int32 bufferSize)
>>    at System.IO.StreamWriter..ctor(Stream stream, Encoding encoding,
>> Int32 bufferSize)
>>    at System.IO.StreamWriter..ctor(Stream stream, Encoding encoding,
>> Int32 bufferSize, Boolean closeable)
>>    at System.Console.InitializeStdOutError(Boolean stdout)
>>    at System.Console.get_Out()
>>    at NUnit.Core.TestContext.ContextHolder..ctor() in 
>> C:\svn\Scratch\wgarrison\NUnit-2.4.8-src\src\NUnitCore\core\Te
>> stContext.cs:line
>> 190
>>
>> I traced into the code far enough to know it has something to 
>> do with the redirection of Console.Out.  But I'm not clear on 
>> how that works or what is going wrong.
>>
>> I traced into the code, and here is what happens:
>> 1) Set a breakpoint at line 147 of ProxyTestRunner.cs.  This line is:
>>             this.testRunner.BeginRun( listener, filter ); At 
>> this point, the value of Console.Out is valid.  I know that 
>> seems irrelevent, but keep reading.  I then step into that call.
>> 2) I am now at line 74 of RemoteTestRunner.cs.  That is the 
>> first line of:
>> public override void BeginRun( EventListener listener, 
>> ITestFilter filter ) At this point, the value of Console.Out 
>> results in the System.ArgumentException.  I do not understand 
>> why Console.Out was destroyed at this point.
>> 3) Now, run for a bit until line 190 of TestContext.cs.  That line is:
>>                 this.outWriter = Console.Out; This is the 
>> first reference to Console.Out since it was destroyed.  This 
>> causes the exception.  It was a real bear to track down too, 
>> because the debugger doesn't properly stop on exceptions that 
>> are thrown from inside static constructors.  I had to turn on 
>> native code debugging in Visual Studio to even see it
>>
>> I don't understand what Nunit is doing with Console.Out.  I 
>> assume it is somehow redirecting it, and that is not working. 
>>  But never in this process do I hit any line that does 
>> Console.SetOut, so I don't see how that is it.  Can someone 
>> explain how it is doing this?  Or what about it is causing 
>> this crazy UTF8 exception?
>>
>>
>>
>> Lastly -- should I post this on the developer mailing list?
>>
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