Mocking UserManager

Question

I have the following code:

var clientId = this.UserManager.FindById(this.User.Identity.GetUserId()).ClientId;

and this is part of one of the controllers of my application. Now I am writing block tests and have to go through this thing to check the actual properties of the controller.

The problem is that it throws a null reference exception because it UserManager.FindByIdreturns null. If I can mock this, then it has the ClientId property, I can avoid the exception.

What have i tried? First mocks UserManager itself:

  var fakeUserManager = new Mock<ApplicationUserManager>();
  fakeUserManager.Setup(x => x.FindById(It.IsAny<string>()))
  .Returns(user);

But when I try to install my .UserManager controller for it:

controller.UserManager = fakeUserManager.Object;

Visual Studio says that the UserManager cannot be used in this context because the access set is not available.

I decided to create the user using the UserManager, but the create method again throws a null reference.

ApplicationUserManager:

public ApplicationUserManager UserManager
        {
            get
            {
                return _userManager ?? Request.GetOwinContext().GetUserManager<ApplicationUserManager>();
            }
            private set
            {
                _userManager = value;
            }
        }

:

@mason . , , . -, @mason, UserManager .

public ApplicationUserManager UserManager
        {
            get
            {
                return _userManager ?? Request.GetOwinContext().GetUserManager<ApplicationUserManager>();
            }

          set
            {
                _userManager = value;
            }
        }

-, . ApplicationUserManager , IUserStore:

var store = new Mock<IUserStore<User>>(MockBehavior.Strict);

            store.As<IUserStore<User>>()
            .Setup(x => x.FindByIdAsync(It.IsAny<string>()))
            .ReturnsAsync(user);

var manager = new ApplicationUserManager(store.Object);

controller.UserManager:

controller.UserManager = manager;

: user , ClientId, .

Answer 1

UserManager, setter private. .

public ApplicationUserManager UserManager
{
    get
    {
        return _userManager ?? Request.GetOwinContext().GetUserManager<ApplicationUserManager>();
    }
    set
    {
        _userManager = value;
    }
}

UserManager .