reorganization of database layer

UserService.Test/UnitTest1.cs

@@ -1,8 +1,12 @@
+using System;
+using System.Collections.Generic;
 using System.Linq;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
 using NUnit.Framework;
-using UserService.DataModels;
+using UserService.DatabaseLayer.DataModels;
 
 namespace UserService.Test
 {
@@ -22,6 +26,8 @@ namespace UserService.Test
             var ous = await db.OrganizationUnits.ToListAsync();
             var mo = await db.UserMembers.ToListAsync();
 
+            var securityGroupsOfUser = user.GetSecurityGroups();
+            var usersOfSecurityGroup = secGroup.GetUsers();
             //var testGroup = new SecurityGroup {CommonName = "Test", Parent = ous.Last()};
             //await db.SecurityGroups.AddAsync(testGroup);
             //var testgroup = await db.SecurityGroups.FindAsync(1);
@@ -29,5 +35,26 @@ namespace UserService.Test
             //await db.SaveChangesAsync();
             Assert.Pass();
         }
+
+        [Test]
+        public async Task Test2()
+        {
+            await using var db = new UserServiceDbContext();
+            var ous = await db.OrganizationUnits.ToListAsync();
+            var sb = new StringBuilder();
+            NewMethod(ous, null, 0, ref sb);
+            var result = sb.ToString();
+            Assert.Pass();
+
+        }
+
+        private static void NewMethod(IEnumerable<OrganizationUnit> ous, Node parent, int level, ref StringBuilder sb)
+        {
+            foreach (var unit in ous.Where(x => x.Parent == parent))
+            {
+                sb.AppendLine(string.Concat(Enumerable.Repeat(' ', 4 * level)) + unit.CommonName);
+                NewMethod(unit.Children.OfType<OrganizationUnit>(), unit, level + 1, ref sb);
+            }
+        }
     }
 }