Unit Testing ASP.NET DataAnnotations validation

Question

I am using DataAnnotations for my model validation i.e.

[Required(ErrorMessage="Please enter a name")]
public string Name { get; set; }

Answer 1

I posted this in my blog post:

using System.ComponentModel.DataAnnotations;

// model class
public class Fiz
{
    [Required]
    public string Name { get; set; }

    [Required]
    [RegularExpression(".+@..+")]
    public string Email { get; set; }
}

// in test class
[TestMethod]
public void EmailRequired()
{
    var fiz = new Fiz 
        {
            Name = "asdf",
            Email = null
        };
    Assert.IsTrue(ValidateModel(fiz).Any(
        v => v.MemberNames.Contains("Email") && 
             v.ErrorMessage.Contains("required")));
}

private IList ValidateModel(object model)
{
    var validationResults = new List();
    var ctx = new ValidationContext(model, null, null);
    Validator.TryValidateObject(model, ctx, validationResults, true);
    return validationResults;
}