Is it considered bad practice to use InternalsVisibleTo for Unit Test Code?

Question

Sample code in framework\'s AssemblyInfo.cs:

[assembly: System.Runtime.CompilerServices.InternalsVisibleTo
                          (\"Test.Com         


        

Answer 1

InternalsVisibleTo could be useful if you need to test sub parts of your API which you don't want to expose.

However, testing through the public API is preferable since it makes refactoring interal APIs easier. Use InternalsVisibleTo with care and only when appropriate, e.g. the size of the API is significant.