public void EditWithPost_ShouldRedirectOnSucessfulBinding()
{
var product = new Product { Id = 5};
var productViewData = new ProductViewData();
productBuilder.Stub(
x => x.ProductFromProductViewData(productViewData, productController.ModelState, productController.Request))
.Return(product);
productController.Edit(productViewData)
.ReturnsRedirectToRouteResult()
.ToAction("Edit")
.WithRouteValue("id", "5");
}