ai did his job.

tests/test_naming.py

@@ -0,0 +1,31 @@
+from favorite_stickers.naming import pack_name, pack_title
+
+
+def test_first_pack_uses_stable_bot_owned_name() -> None:
+    assert pack_name("FavoriteKeeperBot", 123456, 1) == (
+        "favorites_123456_by_favoritekeeperbot"
+    )
+    assert pack_title("FavoriteKeeperBot", 123456, 1) == (
+        "FavoriteKeeperBot - Favorites 123456"
+    )
+
+
+def test_next_pack_has_number_suffix() -> None:
+    assert pack_name("FavoriteKeeperBot", 123456, 2) == (
+        "favorites_123456_2_by_favoritekeeperbot"
+    )
+    assert pack_title("FavoriteKeeperBot", 123456, 2) == (
+        "FavoriteKeeperBot - Favorites 123456 [2]"
+    )
+
+
+def test_names_respect_telegram_length_limit() -> None:
+    username = "a" * 32
+    assert len(pack_name(username, 9_223_372_036_854_775_807, 9999)) <= 64
+    assert len(pack_title(username, 9_223_372_036_854_775_807, 9999)) <= 64
+
+
+def test_short_name_never_contains_consecutive_underscores() -> None:
+    name = pack_name("my__favorite_bot", 123, 2)
+    assert "__" not in name
+    assert name.endswith("_by_my_favorite_bot")