How to unit test private methods in BDD / TDD?

Question

I am trying to program according to Behavior Driven Development, which states that no line of code should be written without writing failing unit test first.

My ques

Answer 1

Mbunit Reflector helps you with this.

Reflector objectReflection = new Reflector(new ObjectWithprivateMethods());
objectReflection.InvokeMethod(AccessModifier.NonPublic,,"Add",1,6));

A blog post about it.