Session null in ASP.Net MVC Controller Constructors

Question

Why is Session null in the constructors of Controllers? It can be accessed from Action methods. Presumably, because the MVC Routing framework is responsible for newing-up a

Answer 1

The Session is injected later in the life-cycle. Why do you need the session in the constructor anyway? If you need it for TDD you should wrap the session into a mockable object.