Question

I have written a NUnit tests for a .NET application. When I run the NUnit, it does not read the connection string values from the configuration file. I tried many solutions with out success, like

1. Adding <assembly name>.dll.config file in the path where NUnit loads the DLL file.
2. Adding the configuration settings in NUnit.exe.config/NUnit.gui.config

I wasn’t able to read the configuration setting even when run in VSNunit. Is there a solution?

Answer 1

I’ve assumed

• Assembly being tested: SomeNameSpace.MyClassLib
• NUnit assembly with unit tests: SomeNameSpace.MyClassLib.Test

Try this:

1. Make sure that you have also copied your app.config to your NUnit Test DLL class library (i.e. project SomeNameSpace.MyClassLib.Test) as well.

2. Build your NUnit Project (e.g. to SomeNameSpace.MyClassLib/bin/debug) and make sure that following are in the bin\debug (or release) directory

   • the assembly to be tested,
   • the NUnit test DLL and
   • the configuration (SomeNameSpace.MyClassLib.Test.config)
   • any other assemblies needed by your DLL file being tested.

3. Edit your NUnit Project in the XML view of the NUnit GUI Project editor (menu Project → Edit, or just edit it in Notepad), and make sure that the test assembly (MyClassLib.Test.dll) and the configuration file names are relative to your appbase

   For example,

   <NUnitProject>
     <Settings activeconfig="Debug" processModel="Default"
               domainUsage="Default"
               appbase="C:\Temp\MyProject\MyClassLib.Test" />
     <Config name="Debug" binpathtype="Auto"
             configfile="bin\Debug\MyClassLib.Test.dll.config">
       <assembly path="bin\Debug\MyClassLib.Test.dll" />
     </Config>
     <Config name="Release" binpathtype="Auto" />
   </NUnitProject>