public async void CreateDefaultUsers() { #region Arrange // create the option instances required by the ApplicationDbContext var options = new DbContextOptionsBuilder <ApplicationDbContext>() .UseInMemoryDatabase(databaseName: "HREmp") .Options; var storeOptions = Options.Create(new OperationalStoreOptions()); // create a IWebHost environment mock instance var mockEnv = new Mock <IWebHostEnvironment>().Object; // define the variables for the users we want to test ApplicationUser user_Admin = null; ApplicationUser user_User = null; ApplicationUser user_NotExisting = null; #endregion #region Act // create a ApplicationDbContext instance using the in-memory DB using (var context = new ApplicationDbContext(options, storeOptions)) { // create a RoleManager instance var roleManager = IdentityHelper.GetRoleManager( new RoleStore <IdentityRole>(context)); // create a UserManager instance var userManager = IdentityHelper.GetUserManager( new UserStore <ApplicationUser>(context)); // create a SeedController instance var controller = new SeedController( context, roleManager, userManager, mockEnv ); // execute the SeedController's CreateDefaultUsers() method // to create the default users (and roles) await controller.CreateDefaultUsers(); // retrieve the users user_Admin = await userManager.FindByEmailAsync("*****@*****.**"); user_User = await userManager.FindByEmailAsync("*****@*****.**"); user_NotExisting = await userManager.FindByEmailAsync("*****@*****.**"); } #endregion #region Assert Assert.True( user_Admin != null && user_User != null && user_NotExisting == null ); #endregion }