Fake HttpContext.Current

fakehttpcontext.cs

class PrincipalStub : IPrincipal
    {

        public IIdentity Identity
        {
            get { return new IdentityStub(); }
        }

        public bool IsInRole(string role)
        {
            return true;
        }
    }

    class IdentityStub : IIdentity
    {
        public string AuthenticationType
        {
            get { return "forms"; }
        }

        public bool IsAuthenticated
        {
            get { return true; }
        }

        public string Name
        {
            get { return "teste"; }
        }
    }

protected virtual void ConfigurarHttpContext()
{
    var context = new HttpContext(new HttpRequest("", URLBASE, ""), new HttpResponse(new StringWriter()));
    context.User = new PrincipalStub();

    HttpContext.Current = context;
}