Testing ModelState is always valid in asp.net mvc

Question

When testing my controller\'s actions the ModelState is always valid.

public class Product
{
    public int Id { get; set; }

    [Required]
    [StringLengt         


        

Answer 1

Use controller.UpdateModel or controller.TryUpdateModel to use the controller's current ValueProvider to bind some data and trigger model binding validation prior to checking if the ModelState.IsValid