Fix unit tests

src/models/user.py

@@ -28,11 +28,11 @@ class User:
         }
 
     @classmethod
-    def from_dict(cls, gid: str, data: dict):
+    def from_dict(cls, uid: str, data: dict):
         credentials = Credential.from_dict(data.get("credentials", {}))
         grants = {gate: Grant.from_dict(grant) for gate, grant in data.get("grants", {}).items()}
         return cls(
-            uid=gid,
+            uid=uid,
             role=Role(data.get("role", Role.GUEST)),
             credentials=credentials,
             grants=grants,