C# – VS 2010, NUNit, and “The breakpoint will not currently be hit. No symbols have been loaded for this document”

cnetnunitvisual studiovisual studio 2010

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:

restart machine
restart VS
delete bin/obj and reload
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.

Best Answer

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.

Related Solutions

C# – How to get the path of the assembly the code is in

I've defined the following property as we use this often in unit testing.

public static string AssemblyDirectory
{
    get
    {
        string codeBase = Assembly.GetExecutingAssembly().CodeBase;
        UriBuilder uri = new UriBuilder(codeBase);
        string path = Uri.UnescapeDataString(uri.Path);
        return Path.GetDirectoryName(path);
    }
}

The Assembly.Location property sometimes gives you some funny results when using NUnit (where assemblies run from a temporary folder), so I prefer to use CodeBase which gives you the path in URI format, then UriBuild.UnescapeDataString removes the File:// at the beginning, and GetDirectoryName changes it to the normal windows format.

C# – How to remedy “The breakpoint will not currently be hit. No symbols have been loaded for this document.” warning

Start debugging, as soon as you've arrived at a breakpoint or used Debug > Break All, use Debug > Windows > Modules. You'll see a list of all the assemblies that are loaded into the process. Locate the one you want to get debug info for. Right-click it and select Symbol Load Information. You'll get a dialog that lists all the directories where it looked for the .pdb file for the assembly. Verify that list against the actual .pdb location. Make sure it doesn't find an old one.

In normal projects, the assembly and its .pdb file should always have been copied by the IDE into the same folder as your .exe, i.e. the bin\Debug folder of your project. Make sure you remove one from the GAC if you've been playing with it.

Best Answer

Related Solutions

C# – How to get the path of the assembly the code is in

C# – How to remedy “The breakpoint will not currently be hit. No symbols have been loaded for this document.” warning

Related Topic