Moq, abstract class and virtual properties

I am using frameworks Moq

for Mocking.

I have SocialWorker

one that comes from a class abstract DataWorker

.

SocialWorker

has a pair link Repositories

likevirtual property

I am trying to run the following test:

private Place _place;
private Mock<IRepository<Resources.Data.Place>> _placeRepositoryMock;
private Mock<SocialWorker> _socialWorkerMock;

[SetUp]
public void SetUp()
{
    _place = new Place {Name = "A"};

    _socialWorkerMock = new Mock<SocialWorker> {DefaultValue = DefaultValue.Mock};

    IRepository<Resources.Data.Place> placeRepository = _socialWorkerMock.Object.PlaceRepository;

    _placeRepositoryMock = Mock.Get(placeRepository);

    _placeRepositoryMock.Setup(
        repository =>
        repository.Find(It.IsAny<Expression<Func<Resources.Data.Place, bool>>>(), null, null))
        .Returns(new[] {new Resources.Data.Place()});
}

[Test]
public void AddShouldAddANewPlace()
{
    var placeManager = new PlaceManager(_socialWorkerMock.Object);

    object placeEntity = placeManager.Add(_place);

    placeEntity.GetType().Should().Equal(typeof (Resources.Data.Place));

    _socialWorkerMock.Verify(
        socialWorker => socialWorker.PlaceRepository.Add(It.IsAny<Resources.Data.Place>()), Times.Once());

    _placeRepositoryMock.Verify(
        placeRepository =>
        placeRepository.Find(p => p.Name.Equals(_place.Name), null, null).First(),
        Times.Once());
}

      

        
        
        
      

    

The last check of this test fails:

System.NotSupportedException : Invalid verify on a non-virtual (overridable in VB) member: placeRepository => placeRepository.Find(p => p.Name.Equals(._place.Name), null, null).First<Place>()

      

        
        
        
      

    

I am new to Moq and unit testing in general.

Here is the relevant code for reference:

IUnitOfWork

public interface IUnitOfWork : IDisposable
{
    void CommitChanges();
}

      

        
        
        
      

    

IRepository

public interface IRepository<T>
{
    void Add(T entity);

    void Delete(T entity);

    IEnumerable<T> Find(Expression<Func<T, bool>> filter = null,
                        Func<IQueryable<T>, IOrderedQueryable<T>> orderBy = null,
                        IList<string> includedProperties = null);

    T FindById(object id);

    void Update(T entity);
}

      

        
        
        
      

    

DataWorker

public abstract class DataWorker : IUnitOfWork
{
    protected ObjectContext ObjectContext;
    private bool _disposed;

    protected DataWorker()
    {
        ObjectContext = new ObjectContext(ConfigurationManager.ConnectionStrings["DataEntities"].ConnectionString);
    }

    ~DataWorker()
    {
        . . .
    }

    protected virtual void Dispose(bool disposing)
    {
        . . .
    }

    public virtual void CommitChanges()
    {
        ObjectContext.SaveChanges();
    }

    public void Dispose()
    {
        . . .
    }
}

      

        
        
        
      

    

DataRepository

public class DataRepository<T> : IRepository<T> where T : EntityObject
{
    private readonly ObjectSet<T> _objectSet;

    public DataRepository(ObjectContext objectContext)
    {
            _objectSet = objectContext.CreateObjectSet<T>();
    }

    public void Add(T entity)
    {
        . . .
    }

    public void Delete(T entity)
    {
        . . .
    }

    public virtual IEnumerable<T> Find(Expression<Func<T, bool>> filter = null,
                               Func<IQueryable<T>, IOrderedQueryable<T>> orderBy = null,
                               IList<string> includedProperties = null)
    {
        . . .
    }

    public T FindById(object id)
    {
        . . .
    }


    public void Update(T entity)
    {
        . . .
    }
}

      

        
        
        
      

    

SocialWorker

public class SocialWorker : DataWorker
{
    private IRepository<ContactRequest> _contactRequestRepository;
    private IRepository<Place> _placeRepository;
    private IRepository<User> _userRepository;

    public virtual IRepository<ContactRequest> ContactRequestRepository
    {
        get
        {
            return _contactRequestRepository ??
                   (_contactRequestRepository = new DataRepository<ContactRequest>(ObjectContext));
        }
    }

    public virtual IRepository<Place> PlaceRepository
    {
        get { return _placeRepository ?? (_placeRepository = new DataRepository<Place>(ObjectContext)); }
    }

    public virtual IRepository<User> UserRepository
    {
        get { return _userRepository ?? (_userRepository = new DataRepository<User>(ObjectContext)); }
    }
}