I am trying to expose some internals to my unit test project by using:

[assembly: InternalsVisibleTo("MyTest")]

But I am getting the error:

Error 1 Friend assembly reference MyTest' is invalid. Strong-name signed assemblies must specify a public key in their InternalsVisibleTo declarations. .../MyClass.cs...

When I assign a PublicTokenKey manually:

[assembly: InternalsVisibleTo("MyTest, PublicKeyToken=XxxxxYysakf")]

The solution builds without any error.

  1. Why do I need to include a public key token?
  2. I am not sure if I will break something in production by including the public key token.

So, what is the best and safest way to assign an public key to my Test project?

c# .net visual-studio unit-testing internalsvisibleto
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