Question

We are using Moq as our mocking framework, the problem is that type that needs to be mock-able is done using an interface, the problem with that is anything in that interface will be public and therefore considered part our public API.

is there a way to have to have a member that is mockable and not public?

Answer 1

If I’ve understood you correctly you want to be able to apply an interface to a type to support mocking, but do so in a manner that the interface will not be visible to public consumers of you code.

Well, one option is that you could implement an internal interface and use the [assembly:InternalsVisibleToAttribute] to make the internal types accessible to your unit tests.

[assembly:InternalsVisibleTo("MyUnitTestAssembly")]

internal interface ISomeInterfaceForMocking { ... }

public class MyMockableType : ISomeInterfaceForMocking { ... }