ValidationContext의 단위 테스트가 실패 했습니까?

Question

기본 클래스가있는 객체에 단위 테스트 유효성 검사를 시도하고 있습니다. 유효성 검사에 실패하는 3 가지 속성 (이메일, 전화 및 기술> 0)이 필요하지만 테스트가 실패합니다.

기본 클래스

public abstract class Person : Entity 
{ 
    public string FirstName { get; set; } 
    public string LastName { get; set; } 
    public string UserName { get; set; } 
    public string FullName { get { return string.Format("{0} {1}", FirstName, LastName); } } 
    public string Email { get; set; } 
    public string Phone { get; set; } 
    public DateTime DateAdded { get; set; } 
    public bool Active { get; set; }   
} 

파생 클래스

public class Contractor : Person, IValidatableObject 
{ 
    public Address Address { get; set; } 
    public List<Skill> SkillSet { get; set; } 
    public DateTime? NextAvailableDate { get; set; } 

    public Contractor() 
    { 

    } 

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext) 
    { 
     if (string.IsNullOrWhiteSpace(base.FirstName)) 
      yield return new ValidationResult("The First Name field cannot be empty."); 

     if (string.IsNullOrWhiteSpace(base.LastName)) 
      yield return new ValidationResult("The Last Name field cannot be empty."); 

     if (string.IsNullOrWhiteSpace(base.Email)) 
      yield return new ValidationResult("The Email field cannot be empty."); 

     if (string.IsNullOrWhiteSpace(base.Phone)) 
      yield return new ValidationResult("The Phone field cannot be empty."); 

     if (SkillSet.Count() < 1) 
      yield return new ValidationResult("A contractor must have at least one skill."); 
    } 

TEST

[TestMethod] 
    public void contractor_is_missing_email_phone_skill_when_created() 
    { 
     //Arrange 
     Contractor contractor = new Contractor { FirstName = "abc", LastName = "def" }; 

     //Act 
     ValidationContext context = new ValidationContext(contractor); 
     IEnumerable<ValidationResult> result = contractor.Validate(new ValidationContext(contractor)); 
     List<ValidationResult> r = new List<ValidationResult>(result); 

     //Assert 
     Assert.IsTrue(r.Count == 3); 
    } 

Answer 1

새 계약자를 만들 때 목록을 초기화한다.

public Contractor() 
    { 
     SkillSet = new List<Skill>(); 
    }