public async Task CanRegisterUser()
        {
            var model = new RegisterBindingModel
            {
                UserName = "******" + DateTimeOffset.Now.Ticks,
                Password = "******",
                ConfirmPassword = "******"
            };

            uri = uriBase + "/register";

            var response = await PostAsync(model);

            Assert.AreEqual(HttpStatusCode.OK, response.StatusCode);
        }
        public async Task<IHttpActionResult> Register(RegisterBindingModel model)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            IdentityUser user = new IdentityUser
            {
                UserName = model.UserName
            };

            IdentityResult result = await UserManager.CreateAsync(user, model.Password);
            IHttpActionResult errorResult = GetErrorResult(result);

            if (errorResult != null)
            {
                return errorResult;
            }

            return Ok();
        }