diff --git a/tests/handlers/test_user_directory.py b/tests/handlers/test_user_directory.py
index 47217f0542..db65253773 100644
--- a/tests/handlers/test_user_directory.py
+++ b/tests/handlers/test_user_directory.py
@@ -372,8 +372,6 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase):
# Alice makes two rooms. Bob joins one of them.
room1 = self.helper.create_room_as(alice, tok=alice_token)
room2 = self.helper.create_room_as(alice, tok=alice_token)
- print("room1=", room1)
- print("room2=", room2)
self.helper.join(room1, bob, tok=bob_token)
# The user sharing tables should have been updated.
@@ -436,6 +434,75 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase):
0,
)
+ def test_making_room_public_doesnt_alter_directory_entry(self) -> None:
+ """Per-room names shouldn't go to the directory when the room becomes public.
+
+ This isn't about preventing a leak (the room is now public, so the nickname
+ is too). It's about preserving the invariant that we only show a user's public
+ profile in the user directory results.
+
+ I made this a Synapse test case rather than a Complement one because
+ I think this is (strictly speaking) an implementation choice. Synapse
+ has chosen to only ever use the public profile when responding to a user
+ directory search. There's no privacy leak here, because making the room
+ public discloses the per-room name.
+
+ The spec doesn't mandate anything about _how_ a user
+ should appear in a /user_directory/search result. Hypothetical example:
+ suppose Bob searches for Alice. When representing Alice in a search
+ result, it's reasonable to use any of Alice's nicknames that Bob is
+ aware of. Heck, maybe we even want to use lots of them in a combined
+ displayname like `Alice (aka "ali", "ally", "41iC3")`.
+ """
+
+ # TODO the same should apply when Alice is a remote user.
+ alice = self.register_user("alice", "pass")
+ alice_token = self.login(alice, "pass")
+ bob = self.register_user("bob", "pass")
+ bob_token = self.login(bob, "pass")
+
+ # Alice and Bob are in a private room.
+ room = self.helper.create_room_as(alice, is_public=False, tok=alice_token)
+ self.helper.invite(room, src=alice, targ=bob, tok=alice_token)
+ self.helper.join(room, user=bob, tok=bob_token)
+
+ # Alice has a nickname unique to that room.
+
+ self.helper.send_state(
+ room,
+ "m.room.member",
+ {
+ "displayname": "Freddy Mercury",
+ "membership": "join",
+ },
+ alice_token,
+ state_key=alice,
+ )
+
+ # Check Alice isn't recorded as being in a public room.
+ public = self.get_success(self.user_dir_helper.get_users_in_public_rooms())
+ self.assertNotIn((alice, room), public)
+
+ # One of them makes the room public.
+ self.helper.send_state(
+ room,
+ "m.room.join_rules",
+ {"join_rule": "public"},
+ alice_token,
+ )
+
+ # Check that Alice is now recorded as being in a public room
+ public = self.get_success(self.user_dir_helper.get_users_in_public_rooms())
+ self.assertIn((alice, room), public)
+
+ # Alice's display name remains the same in the user directory.
+ search_result = self.get_success(self.handler.search_users(bob, alice, 10))
+ self.assertEqual(
+ search_result["results"],
+ [{"display_name": "alice", "avatar_url": None, "user_id": alice}],
+ 0,
+ )
+
def test_private_room(self) -> None:
"""
A user can be searched for only by people that are either in a public
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