do_delete_user: Preserve date_joined value of the user.

zerver/lib/actions.py

@@ -1215,6 +1215,7 @@ def do_delete_user(user_profile: UserProfile) -> None:
     )
     user_id = user_profile.id
     realm = user_profile.realm
+    date_joined = user_profile.date_joined
     personal_recipient = user_profile.recipient
 
     with transaction.atomic():
@@ -1232,6 +1233,7 @@ def do_delete_user(user_profile: UserProfile) -> None:
             full_name=f"Deleted User {user_id}",
             active=False,
             is_mirror_dummy=True,
+            force_date_joined=date_joined,
         )
         subs_to_recreate = [
             Subscription(

zerver/lib/create_user.py

@@ -1,3 +1,4 @@
+from datetime import datetime
 from typing import Optional, Union
 
 import orjson
@@ -85,8 +86,13 @@ def create_user_profile(
     tutorial_status: str = UserProfile.TUTORIAL_WAITING,
     enter_sends: bool = False,
     force_id: Optional[int] = None,
+    force_date_joined: Optional[datetime] = None,
 ) -> UserProfile:
-    now = timezone_now()
+    if force_date_joined is None:
+        date_joined = timezone_now()
+    else:
+        date_joined = force_date_joined
+
     email = UserManager.normalize_email(email)
 
     extra_kwargs = {}
@@ -97,8 +103,8 @@ def create_user_profile(
         is_staff=False,
         is_active=active,
         full_name=full_name,
-        last_login=now,
-        date_joined=now,
+        last_login=date_joined,
+        date_joined=date_joined,
         realm=realm,
         is_bot=bool(bot_type),
         bot_type=bot_type,
@@ -141,6 +147,7 @@ def create_user(
     default_all_public_streams: Optional[bool] = None,
     source_profile: Optional[UserProfile] = None,
     force_id: Optional[int] = None,
+    force_date_joined: Optional[datetime] = None,
     enable_marketing_emails: Optional[bool] = None,
 ) -> UserProfile:
     user_profile = create_user_profile(
@@ -155,6 +162,7 @@ def create_user(
         tos_version,
         timezone,
         force_id=force_id,
+        force_date_joined=force_date_joined,
     )
     user_profile.avatar_source = avatar_source
     user_profile.timezone = timezone

zerver/tests/test_users.py

@@ -2039,6 +2039,7 @@ class DeleteUserTest(ZulipTestCase):
         hamlet = self.example_user("hamlet")
         hamlet_personal_recipient = hamlet.recipient
         hamlet_user_id = hamlet.id
+        hamlet_date_joined = hamlet.date_joined
 
         self.send_personal_message(cordelia, hamlet)
         self.send_personal_message(hamlet, cordelia)
@@ -2072,6 +2073,7 @@ class DeleteUserTest(ZulipTestCase):
         )
         self.assertEqual(replacement_dummy_user.is_mirror_dummy, True)
         self.assertEqual(replacement_dummy_user.is_active, False)
+        self.assertEqual(replacement_dummy_user.date_joined, hamlet_date_joined)
 
         self.assertEqual(Message.objects.filter(id__in=personal_message_ids_to_hamlet).count(), 0)
         # Huddle messages from hamlet should have been deleted, but messages of other participants should