add(test)：添加单元测试

backend/IM_API/Hubs/ChatHub.cs

@@ -1,4 +1,6 @@
-using IM_API.Interface.Services;
+using IM_API.Dtos;
+using IM_API.Interface.Services;
+using IM_API.Tools;
 using Microsoft.AspNetCore.SignalR;
 using System.Security.Claims;
 
@@ -12,15 +14,21 @@ namespace IM_API.Hubs
             _JWTService = jWTService;
         }
 
-        public override Task OnConnectedAsync()
+        public async override Task OnConnectedAsync()
         {
             var userIdStr = Context.User.FindFirstValue(ClaimTypes.NameIdentifier);
+            if(userIdStr is null)
+            {
+                await Clients.Caller.SendAsync("ReceiveMessage",new BaseResponse<object?>(CodeDefine.AUTH_FAILED));
+                Context.Abort();
+                return;
+            }
             int userId = int.Parse(userIdStr);
-            Console.WriteLine(userId);
-            return base.OnConnectedAsync();
+            await base.OnConnectedAsync();
         }
-        public async Task SendMessage(string user,string message)
+        public async Task SendMessage(MessageBaseDto dto)
         {
+            
             await Clients.Caller.SendAsync("ReceiveMessage", "qwfqwfqw","test");
         }
     }