public void Setup()
 {
     rentalsMock = Substitute.For <IMovieRentals>();
     sut         = new Bll.VideoStore(rentalsMock);
     testMovie   = new Movie {
         Title = "Die Hard"
     };
     testCustomer = new Customer()
     {
         Name = "Tess", SocialSecurityNumber = "1991-02-23"
     };
 }
 public VideoStore(IMovieRentals rentals)
 {
     this.rentals = rentals;
     customers    = new List <Customer>();
     movies       = new List <Movie>();
 }