VisibleForTesting annotation for C++

Question

Is there an annotation in C++ similar to @VisibleForTesting in Java ? I tried to google around, but could not find a reasonable answer.

Answer 1

You can forward declare your test class/method as a friend of the class being tested.

Update: Adding example.

class type_to_test
{
    friend class test_case_class;
};

class test_case_class
{
public:
    test_case_class()
    {
        type_to_test tt;
        // everything in tt should be accessible here or in any other member function if you can grab hold of an instance.
    }
};