From d3ff68f0c3a64a3ccfe6d3a82c4aa912bc24e70a Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Sun, 9 Aug 2026 00:50:50 +0000
Subject: [PATCH] test(routing_groups): cover selector build failure returning
 the error

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 .../router_strategy/test_router_routing_groups.py    | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tests/test_litellm/router_strategy/test_router_routing_groups.py b/tests/test_litellm/router_strategy/test_router_routing_groups.py
index c4d667a6af9..4ca0d36c00d 100644
--- a/tests/test_litellm/router_strategy/test_router_routing_groups.py
+++ b/tests/test_litellm/router_strategy/test_router_routing_groups.py
@@ -10,6 +10,7 @@ import sys
 from unittest.mock import patch
 
 import pytest
+from pydantic import ValidationError
 
 sys.path.insert(0, os.path.abspath("../.."))
 
@@ -815,3 +816,14 @@ def test_unbuildable_group_selector_keeps_previous_groups():
     assert router._model_to_group == {"filtered-model": "g1"}
     assert router._group_selectors["g1"]["latency-based-routing"] is selector
     assert sum(1 for cb in litellm.callbacks if type(cb) is type(selector)) == 1
+    assert isinstance(
+        router._try_build_group_selector(
+            RoutingGroup(
+                group_name="g2",
+                models=["other-model"],
+                routing_strategy="latency-based-routing",
+                routing_strategy_args={"ttl": "not-a-number"},
+            )
+        ),
+        ValidationError,
+    )