I am trying to use the `InternalsVisibleTo` assembly attribute to make my internal classes in a .NET class library visible to my unit test project.  For some reason, I keep getting an error message that says:

&gt;&#39;MyClassName&#39; is inaccessible due to its protection level

Both assemblies are signed and I have the correct key listed in the attribute declaration.  Any ideas?

InternalsVisibleTo attribute isn&#39;t working

I insert the line:

`[assembly: InternalsVisibleTo(&quot;MyTests&quot;)]` 

inside my project under test( `Properties/AssemblyInfo.cs`) where `MyTests` is the name of the Unit Test project. But for some reason I still cannot access the internal methods from the unit test project.

Any ideas about what I am doing wrong ?

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InternalsVisibleTo attribute isn't working

InternalsVisibleTo does not work