fixes test

Author: pcrespov

services/web/server/src/simcore_service_webserver/api/v0/openapi.yaml

@@ -11001,10 +11001,13 @@ components:
           title: Id
           description: the user's id
         userName:
-          type: string
-          maxLength: 100
-          minLength: 1
+          anyOf:
+          - type: string
+            maxLength: 100
+            minLength: 1
+          - type: 'null'
           title: Username
+          description: None if private
         gid:
           anyOf:
           - type: integer
@@ -11019,19 +11022,19 @@ components:
             format: email
           - type: 'null'
           title: Login
-          description: the user's email, if privacy settings allows
+          description: the user's email or None if private
         first_name:
           anyOf:
           - type: string
           - type: 'null'
           title: First Name
-          description: If privacy settings allows
+          description: None if private
         last_name:
           anyOf:
           - type: string
           - type: 'null'
           title: Last Name
-          description: If privacy settings allows
+          description: None if private
         gravatar_id:
           anyOf:
           - type: string
@@ -11046,8 +11049,6 @@ components:
           description: If group is standard, these are these are the access rights
             of the user to it.None if primary group.
       type: object
-      required:
-      - userName
       title: GroupUserGet
       example:
         accessRights:

services/web/server/tests/unit/with_dbs/03/test_users.py

@@ -271,7 +271,7 @@ async def test_get_user_by_group_id(
     assert private_user["id"] != logged_user["id"]
     assert public_user["id"] != logged_user["id"]
 
-    # GET user by primary GID
+    # GET public_user by its primary gid
     url = client.app.router["get_all_group_users"].url_for(
         gid=f"{public_user['primary_gid']}"
     )
@@ -285,6 +285,7 @@ async def test_get_user_by_group_id(
     assert users[0].first_name == public_user.get("first_name")
     assert users[0].last_name == public_user.get("last_name")
 
+    # GET private_user by its primary gid
     url = client.app.router["get_all_group_users"].url_for(
         gid=f"{private_user['primary_gid']}"
     )
@@ -294,9 +295,9 @@ async def test_get_user_by_group_id(
     users = TypeAdapter(list[GroupUserGet]).validate_python(data)
     assert len(users) == 1
     assert users[0].id == private_user["id"]
-    assert users[0].user_name == private_user["name"]
-    assert users[0].first_name is None
-    assert users[0].last_name is None
+    assert users[0].user_name is None, "It's private"
+    assert users[0].first_name is None, "It's private"
+    assert users[0].last_name is None, "It's private"
 
 
 @pytest.mark.parametrize(