test(invites): cover join-by-token and invite-link permissions

docs/core-checklist-status.md

@@ -29,7 +29,7 @@ Legend:
 20. GIF - `PARTIAL` (web GIF picker with Tenor search + preset fallback + favorites)
 21. Message History/Search - `DONE` (history/pagination/chat+global search)
 22. Text Formatting - `PARTIAL` (bold/italic/underline/spoiler/mono/links + strikethrough + quote/code block; toolbar still evolving)
-23. Groups - `PARTIAL` (create/add/remove/invite link; advanced moderation partial)
+23. Groups - `PARTIAL` (create/add/remove/invite link; join-by-invite and invite permissions covered by integration tests; advanced moderation partial)
 24. Roles - `DONE` (owner/admin/member)
 25. Admin Rights - `PARTIAL` (delete/pin/edit info + explicit ban API for groups/channels; integration tests cover channel member read-only, channel admin full-delete, channel message delete-for-all permissions, group profile edit permissions, and owner-only role management rules; remaining UX moderation tools limited)
 26. Channels - `PARTIAL` (create/post/edit/delete/subscribe/unsubscribe; UX edge-cases still polishing)

tests/test_chat_message_flow.py

@@ -454,6 +454,63 @@ async def test_group_owner_cannot_demote_self_from_owner_role(client, db_session
     assert owner_try_self_demote.status_code == 422
 
 
+async def test_group_invite_link_allows_join_by_token(client, db_session):
+    owner = await _create_verified_user(client, db_session, "invite_owner@example.com", "invite_owner", "strongpass123")
+    joiner = await _create_verified_user(client, db_session, "invite_joiner@example.com", "invite_joiner", "strongpass123")
+
+    create_group = await client.post(
+        "/api/v1/chats",
+        headers={"Authorization": f"Bearer {owner['access_token']}"},
+        json={"type": ChatType.GROUP.value, "title": "Invite group", "member_ids": []},
+    )
+    assert create_group.status_code == 200
+    chat_id = create_group.json()["id"]
+
+    invite_link = await client.post(
+        f"/api/v1/chats/{chat_id}/invite-link",
+        headers={"Authorization": f"Bearer {owner['access_token']}"},
+    )
+    assert invite_link.status_code == 200
+    token = invite_link.json()["token"]
+
+    join_response = await client.post(
+        "/api/v1/chats/join-by-invite",
+        headers={"Authorization": f"Bearer {joiner['access_token']}"},
+        json={"token": token},
+    )
+    assert join_response.status_code == 200
+    assert join_response.json()["id"] == chat_id
+
+    joiner_chats = await client.get(
+        "/api/v1/chats",
+        headers={"Authorization": f"Bearer {joiner['access_token']}"},
+    )
+    assert joiner_chats.status_code == 200
+    assert any(chat["id"] == chat_id for chat in joiner_chats.json())
+
+
+async def test_group_member_cannot_create_invite_link(client, db_session):
+    owner = await _create_verified_user(client, db_session, "invite_owner2@example.com", "invite_owner2", "strongpass123")
+    member = await _create_verified_user(client, db_session, "invite_member2@example.com", "invite_member2", "strongpass123")
+
+    me_member = await client.get("/api/v1/auth/me", headers={"Authorization": f"Bearer {member['access_token']}"})
+    member_id = me_member.json()["id"]
+
+    create_group = await client.post(
+        "/api/v1/chats",
+        headers={"Authorization": f"Bearer {owner['access_token']}"},
+        json={"type": ChatType.GROUP.value, "title": "Invite rights", "member_ids": [member_id]},
+    )
+    assert create_group.status_code == 200
+    chat_id = create_group.json()["id"]
+
+    member_invite_link = await client.post(
+        f"/api/v1/chats/{chat_id}/invite-link",
+        headers={"Authorization": f"Bearer {member['access_token']}"},
+    )
+    assert member_invite_link.status_code == 403
+
+
 async def test_group_invite_privacy_contacts_only(client, db_session):
     inviter = await _create_verified_user(client, db_session, "invite_u1@example.com", "invite_u1", "strongpass123")
     target = await _create_verified_user(client, db_session, "invite_u2@example.com", "invite_u2", "strongpass123")