Mocking ApiController which has Unit of work Dependency - unit-testing

Question

I have a Apicontroller Which has dependency on unit of work object. How to write a test case for mocking ApiController Which has dependency on unit of work implemented in ApiController constructor.
Here is the code:
ApiController:
public class UserController : ApiController
{
public IUoW UoW { get; set; }
// GET api/user
public UserController(IUoW uow)
{
UoW = uow;
}
public IEnumerable<Users> Get()
{
return UoW.Users.Getall();
}
}
The Test case :
[TestMethod]
public void TestApiController()
{
var userManager = new Mock<IUoW>();
userManager.Setup(s => s.Users);
var controller = new UserController(userManager.Object);
var values = controller.Get();
Assert.IsNotNull(values);
}
The Users Class which has been mentioned here in UoW.Users is
public class UoW:IUoW,IDisposable
{
private MvcWebApiContext DbContext { get; set; }
protected IRepositoryProvider RepositoryProvider { get; set; }
private IRepository<T> GetStandardRepo<T>() where T : class
{
return RepositoryProvider.GetRepositoryForEntityType<T>();
}
public IRepository<Users> Users
{
get { return GetStandardRepo<Users>(); }
}
}
and the Users class itself is
[Table("UserProfile")]
public class Users
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int UserId { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
[DataType(DataType.PhoneNumber)]
public long Mobile { get; set; }
}
When I am trying to debug the test case , the Test case shows the object UoW.Users is null in UserController. Its obvious its not initializing through WebActivator since global.asax isnt invoked here through mock. Now how to write a successful test scenario in this context so that the WebApicontroller returns me the users object with data ?

Answer 1

Are you using Moq?
As I cannot see what type the UoW.Users property is I cannot demo how to mock it properly (updated IRepository) but that should be mocked and the GetAll method stubbed to return a sample list of users.
Updated
var userManager = new Mock<IUoW>();
userManager.Setup(s => s.Users).Returns(()=>
{
var userReposisitory = new Mock<IRepository<Users>>();
userReposisitory.Setup(ur => ur.GetAll()).Returns(()=> {
var listOfUsers = new List<Users>();
listOfUsers.Add(new Users { FirstName = "Example" });
return listOfUsers.AsQueryable();
});
return userReposisitory.Object;
});
var controller = new UserController(userManager.Object);
var result = controller.Get();
Assert.IsNotNull(result);
Assert.IsTrue(result.Count() > 0);