In this article, we will learn how to perform Unit Testing with UserManager and RoleManager in ASP.NET Core Identity. Unit testing is an essential practice in software development that helps ensure the correctness and reliability of code. In the context of ASP.NET Core Identity, unit testing becomes even more critical, as it involves sensitive user-related operations such as registration and authentication.<\/p>\n
We use the Here, we will test the user registration process that makes use of both objects. The code is based on the article on user registration<\/a> that is part of the ASP.NET Core Identity series<\/a>.<\/p>\n By the end of this article, you will have a comprehensive understanding of how to unit test the user registration process in ASP.NET Core Identity and improve the quality and reliability of your code.<\/p>\n Let’s start.<\/p>\n During registration, the user has to enter his details: first and last name, username, and password. Additionally, the user has to select the appropriate role (Visitor or Administrator).<\/p>\n The registration process is handled by the The Let’s see how to define those roles in the application.<\/p>\n Initially, let’s create a new class ( Next, let’s override the Now, the new roles are available to the Account controller and are displayed with a drop-down box in the respective view. Next, let’s proceed with unit testing of this controller.<\/p>\nUserManager<\/code> class to perform user-related operations, such as user registration and authentication. Moreover, we use the RoleManager<\/code> class to manage and access user roles in our application. During unit testing, we need a way to mock those objects, to test the functionality of our controllers in isolation.<\/p>\n<\/a>The User Registration Process<\/h2>\n
AccountController<\/code> class:<\/p>\npublic class AccountController : Controller\r\n{\r\n private readonly IMapper _mapper;\r\n private readonly UserManager<User> _userManager;\r\n private readonly RoleManager<IdentityRole> _roleManager;\r\n\r\n public AccountController(IMapper mapper, \r\n UserManager<User> userManager, RoleManager<IdentityRole> roleManager)\r\n {\r\n _mapper = mapper;\r\n _userManager = userManager;\r\n _roleManager = roleManager;\r\n }\r\n \/\/other methods omitted\r\n}<\/pre>\nRegister()<\/code> method in the Account controller handles the registration POST request and uses UserManager<\/code> and RoleManager<\/code> to create a new user and assign them a role:<\/p>\n[HttpPost]\r\n[ValidateAntiForgeryToken]\r\npublic async Task<IActionResult> Register(UserRegistrationModel userModel)\r\n{\r\n ViewData[\"roles\"] = _roleManager.Roles.ToList();\r\n\r\n if (!ModelState.IsValid)\r\n {\r\n return View(userModel);\r\n }\r\n\r\n var user = _mapper.Map<User>(userModel);\r\n\r\n var result = await _userManager.CreateAsync(user, userModel.Password);\r\n if(!result.Succeeded)\r\n {\r\n foreach (var error in result.Errors)\r\n {\r\n ModelState.TryAddModelError(error.Code, error.Description);\r\n }\r\n\r\n return View(userModel);\r\n }\r\n\r\n await _userManager.AddToRoleAsync(user, userModel.Role);\r\n\r\n return RedirectToAction(nameof(HomeController.Index), \"Home\");\r\n}<\/pre>\nRoleConfiguration<\/code>) that implements the IEntityTypeConfiguration<IdentityRole><\/code> interface:<\/p>\npublic class RoleConfiguration : IEntityTypeConfiguration<IdentityRole>\r\n{\r\n public void Configure(EntityTypeBuilder<IdentityRole> builder)\r\n {\r\n builder.HasData(\r\n new IdentityRole\r\n {\r\n Name = \"Visitor\",\r\n NormalizedName = \"VISITOR\"\r\n },\r\n new IdentityRole\r\n {\r\n Name = \"Administrator\",\r\n NormalizedName = \"ADMINISTRATOR\"\r\n });\r\n }\r\n}<\/pre>\nRoleConfiguration<\/code> creates two new IdentityRole<\/code> objects, named Visitor<\/code> and Administrator<\/code> respectively.<\/p>\nOnModelCreating()<\/code> method in the database context file (ApplicationContext.cs<\/code>), to apply the new configuration:<\/p>\nprotected override void OnModelCreating(ModelBuilder modelBuilder)\r\n{\r\n base.OnModelCreating(modelBuilder);\r\n modelBuilder.ApplyConfiguration(new RoleConfiguration());\r\n}<\/pre>\n<\/a>Unit Testing With UserManager and RoleManager<\/h2>\n