//TODO mock the session to get the cart
public void FromSession_ShouldGetTheCartFromSession()
{
//Arrange
var sessionItems = new SessionStateItemCollection();
sessionItems.Dirty = false;
sessionItems["cart"] = new ShoppingCart();
var fakeHttpContext = FakeFactory.FakeHttpContextWithSession(sessionItems);
var shoppingCartWrapper = new ShoppingCartWrapper(fakeHttpContext);
//Act
var shoppingCart = shoppingCartWrapper.Get();
//Assert
shoppingCart.Should().NotBeNull();
}