…

1 files changed, 17 insertions, 0 deletions

diff --git a/BackEnd/Timeline/Services/User/UserServiceExtensions.cs b/BackEnd/Timeline/Services/User/UserServiceExtensions.cs
new file mode 100644
index 00000000..82b55fba
--- /dev/null
+++ b/BackEnd/Timeline/Services/User/UserServiceExtensions.cs
@@ -0,0 +1,17 @@
+using System.Collections.Generic;

+using System.Threading.Tasks;

+

+namespace Timeline.Services.User

+{

+    public static class UserServiceExtensions

+    {

+        public static async Task ThrowIfUserNotExist(this IUserService service, long userId)

+        {

+            if (!await service.CheckUserExistenceAsync(userId))

+            {

+                throw new EntityNotExistException(EntityTypes.User,

+                    new Dictionary<string, object> { ["id"] = userId });

+            }

+        }

+    }

+}