diff --git a/Govor.API/Hubs/FriendsHub.cs b/Govor.API/Hubs/FriendsHub.cs
index 7aa9564..50b8e2a 100644
--- a/Govor.API/Hubs/FriendsHub.cs
+++ b/Govor.API/Hubs/FriendsHub.cs
@@ -1,9 +1,7 @@
-using System.ComponentModel.DataAnnotations;
 using AutoMapper;
 using Govor.API.Common.SignalR.Helpers;
 using Govor.Application.Exceptions.FriendsService;
 using Govor.Application.Interfaces.Friends;
-using Govor.Application.Interfaces.Infrastructure.Extensions;
 using Govor.Contracts.DTOs;
 using Govor.Contracts.Responses.SignalR;
 using Microsoft.AspNetCore.SignalR;
diff --git a/Govor.Application.Tests/Services/UserOnlineStatus/UserNotificationScopeServiceTests.cs b/Govor.Application.Tests/Services/UserOnlineStatus/UserNotificationScopeServiceTests.cs
index b4cf4ef..1eb0eb7 100644
--- a/Govor.Application.Tests/Services/UserOnlineStatus/UserNotificationScopeServiceTests.cs
+++ b/Govor.Application.Tests/Services/UserOnlineStatus/UserNotificationScopeServiceTests.cs
@@ -1,4 +1,12 @@
+using AutoFixture;
+using Govor.Application.Interfaces.Friends;
+using Govor.Application.Interfaces.UserOnlineStatus;
 using Govor.Application.Services.UserOnlineStatus;
+using Govor.Core.Models;
+using Govor.Core.Models.Users;
+using Govor.Data.Repositories.Exceptions;
+using Microsoft.Extensions.Logging;
+using Moq;
 
 namespace Govor.Application.Tests.Services.UserOnlineStatus;
 
@@ -6,10 +14,55 @@ namespace Govor.Application.Tests.Services.UserOnlineStatus;
 [TestOf(typeof(UserNotificationScopeService))]
 public class UserNotificationScopeServiceTests
 {
+    private Mock<ILogger<UserNotificationScopeService>> _mockLogger;
+    private Mock<IFriendshipService> _mockFriendshipService;
+    private IUserNotificationScopeService _service;
+    private Fixture _fixture;
+    private Guid _userId;
+    
+    
+    [SetUp]
+    public void SetUp()
+    {
+        _fixture = new Fixture();
+        _fixture.Behaviors.OfType<ThrowingRecursionBehavior>().ToList().ForEach(b => _fixture.Behaviors.Remove(b));
+        _fixture.Behaviors.Add(new OmitOnRecursionBehavior());
+        
+        _userId = Guid.NewGuid();
+        
+        _mockLogger = new Mock<ILogger<UserNotificationScopeService>>();
+        _mockFriendshipService = new Mock<IFriendshipService>();
+        
+        _service = new UserNotificationScopeService(_mockLogger.Object, _mockFriendshipService.Object);
+    }
+    
+    [Test]
+    public async Task GetNotifiedUsers_ReturnsNotifiedUsers()
+    {
+        // Arrange 
+        var random = new Random();
+        var users = _fixture.CreateMany<User>(random.Next(3, 10)).ToList();
+        
+        _mockFriendshipService.Setup(f => f.GetFriendsAsync(_userId))
+            .ReturnsAsync(users);
+        
+        // Act 
+        var result = await _service.GetNotifiedUsers(_userId);
+        // Assert 
+        Assert.That(result, Is.Not.Null);
+        Assert.That(result.Count, Is.EqualTo(users.Count));
+        Assert.That(result, Is.EquivalentTo(users.Select(u => u.Id)));
+    }
 
     [Test]
-    public void METHOD()
+    public async Task GetNotifiedUsers_ThrowsInvalidOperationException_WhenUserDoesNotExist()
     {
-        
+        // Arrange 
+        _mockFriendshipService.Setup(f => f.GetFriendsAsync(_userId))
+            .ThrowsAsync(new NotFoundByKeyException<Guid>(_userId, "Database is empty."));
+
+        // Act & Assert 
+        var ex = Assert.ThrowsAsync<InvalidOperationException>(async () => await _service.GetNotifiedUsers(_userId));
+        Assert.That(ex.Message, Is.EqualTo("User not found"));
     }
-}
\ No newline at end of file
+}