Learning MSTest -- trying to unit test a REST function: AccountController (which I believe will work) I want to start with Register. I can't get the Mocks setup for some reason. (Moq is installed). Also, I'm confused as to how this could possibly be of any use; if I mock all the controller inputs, I'm not going to get anything back? Your Advice?
AccountController - target of the unit test:
namespace API.Controllers { public class AccountController : BaseApiController { private readonly UserManager<AppUser> _userManager; private readonly SignInManager<AppUser> _signInManager; private readonly RoleManager<IdentityRole> _roleManager; private readonly ITokenService _tokenService; private readonly IMapper _mapper; public AccountController( UserManager<AppUser> userManager, SignInManager<AppUser> signInManager, RoleManager<IdentityRole> roleManager, ITokenService tokenService, IMapper mapper) { _signInManager = signInManager; _roleManager = roleManager; _mapper = mapper; _tokenService = tokenService; _userManager = userManager; } [HttpPost("register")] // [Authorize] [Authorize(Roles = "Admin")] public async Task<ActionResult<UserDto>> Register(RegisterDto registerDto) { if (await this.UserExistsAsync(registerDto.Username)) return BadRequest("Username is taken"); var user = _mapper.Map<AppUser>(registerDto); user.UserName = registerDto.Username.ToLower(); var result = await _userManager.CreateAsync(user, registerDto.Password); if (!result.Succeeded) return BadRequest(result.Errors); var roleResult = await _userManager.AddToRoleAsync(user, "User"); if (!roleResult.Succeeded) return BadRequest(result.Errors); return new UserDto { Username = user.UserName, Token = await _tokenService.CreateToken(user), KnownAs = user.KnownAs }; } BTW BaseController is simply:
{ [ApiController] [Route("api/[controller]")] public class BaseApiController : ControllerBase { } } The Unit Test so far is:
namespace API.Controllers.Tests { [TestClass()] public class AccountControllerTests { [TestMethod()] public async void AccountController_Register() { var _userManager = new Mock<UserManager<AppUser>>(); var _signInManager = new Mock<SignInManager<AppUser>>(); var _roleManager = new Mock<RoleManager<IdentityRole>>(); ITokenService tokenService; IMapper mapper; RegisterDto userDto = new RegisterDto() { Username = "Admin", Password = "Secret1234", FirstName = "Johnny", LastName = "Appleseed", Phone1 = "6175551212", Phone2 = "", KnownAs = "Dude", EmailAddress = "[email protected]", Question = "ask", Answer = "answer", }; AccountController accountController = new AccountController(_userManager, _signInManager, _roleManager, tokenService, mapper); await accountController.Register(userDto); Assert.Fail(); <<---- this will be replaced obviously } The compiler error looks like this: 
Other arguments have a similar error message.
Your Advice OR point me to a tutorial somewhere that covers MSTest Mocks :-) Thanks in advance.
Chuck
