VS 2010, NUNit, and "The breakpoint will not currently be hit. No symbols have been loaded for this document"

Question

Using Windows 7 32 bit, VS 2010, .NET 4 DLL, NUnit (2.5.5) to unit test the application. I'm currently getting the following error; seen plenty of posts and tried the following:

1. restart machine
2. restart VS
3. delete bin/obj and reload
4. clean/rebuild

But I cannot get NUnit to hit my breakpoints when running;

I set the NUNit test project to point to the nunit.exe, and to load the testing .NET 4 DLL, but when I run it doesn't find the breakpoint, "no symbols have been loaded". I tried debug >windows > modules, it doesn't even show my unit testing project when I run it.

I found this, to use the nunit agent: http://groups.google.com/group/nunit-discuss/browse_thread/thread/5680d7def5b6982f

But I get an error when I use the nunit agent too. I was using nunit-agent-x86.exe, but I get a system.formatexception and it crashes...

Can anybody help?

Thanks.

Answer 1

There's another similar question here on Stack Overflow, where I posted my answer with what worked for me. I can set breakpoints and start NUnit directly from Visual Studio 2010 with Debug -> Start New Instance (which I think is your goal).

I set nunit.exe as the external program in project -> Properties -> Debugging and added:

<startup>     <requiredRuntime version="4.0.30319" /> </startup> 

to the nunit.exe.config file found next to the nunit executable in the NUnit install directory.