Fix unit test: CreateUser_Test

Author: hikalkan

aspnet-core/src/AbpCompanyName.AbpProjectName.Application/Users/Dto/CreateUserDto.cs

@@ -2,12 +2,13 @@
 using Abp.Auditing;
 using Abp.Authorization.Users;
 using Abp.AutoMapper;
+using Abp.Runtime.Validation;
 using AbpCompanyName.AbpProjectName.Authorization.Users;
 
 namespace AbpCompanyName.AbpProjectName.Users.Dto
 {
     [AutoMapTo(typeof(User))]
-    public class CreateUserDto
+    public class CreateUserDto : IShouldNormalize
     {
         [Required]
         [StringLength(AbpUserBase.MaxUserNameLength)]
@@ -34,5 +35,13 @@ public class CreateUserDto
         [StringLength(AbpUserBase.MaxPlainPasswordLength)]
         [DisableAuditing]
         public string Password { get; set; }
+
+        public void Normalize()
+        {
+            if (RoleNames == null)
+            {
+                RoleNames = new string[0];
+            }
+        }
     }
 }

aspnet-core/src/AbpCompanyName.AbpProjectName.Application/Users/UserAppService.cs

@@ -9,6 +9,7 @@
 using Microsoft.AspNetCore.Identity;
 using System.Linq;
 using Abp.Authorization;
+using Abp.Authorization.Users;
 using Microsoft.EntityFrameworkCore;
 using Abp.IdentityFramework;
 using AbpCompanyName.AbpProjectName.Authorization.Roles;