litellm/tests/test_litellm/test_router_redis_init.py
Harshit Jain a457162517 fix: handle deprecated 'redis_db' arg to prevent crash (#19808)
* fix: handle deprecated 'redis_db' arg to prevent crash

* renamed: changed dir
2026-02-02 18:18:05 +05:30

57 lines
1.9 KiB
Python

import pytest
import asyncio
import os
from litellm import Router
# Mark as async test
@pytest.mark.asyncio
async def test_router_uses_correct_redis_db():
"""
Verifies that when redis_db is passed to Router,
items are actually stored in that specific Redis DB index.
"""
# 1. Setup - Use a non-standard DB index (e.g., 5) to prove it's not using default 0
test_db_index = 5
# Ensure we have a Redis URL available (fallback to localhost if env var not set)
redis_host = os.getenv("REDIS_HOST", "localhost")
redis_port = os.getenv("REDIS_PORT", "6379")
# Initialize Router with specific redis_db
router = Router(
model_list=[
{
"model_name": "gpt-3.5-turbo",
"litellm_params": {"model": "gpt-3.5-turbo"},
}
],
redis_host=redis_host,
redis_port=int(redis_port),
redis_db=test_db_index,
cache_responses=True, # Important: Enable caching to trigger Redis usage
)
# 2. Verify Internal State
# Check if the underlying cache client is configured with the correct DB
# Accessing internal attributes for verification purposes
try:
if router.cache.redis_cache:
# Check connection kwargs or internal client db
cache_client = router.cache.redis_cache.redis_client
# Redis client stores connection args in connection_pool.connection_kwargs
conn_kwargs = cache_client.connection_pool.connection_kwargs
assert str(conn_kwargs.get("db")) == str(
test_db_index
), f"Router Internal Check Failed: Expected DB {test_db_index}, got {conn_kwargs.get('db')}"
else:
pytest.fail("Redis cache was not initialized in Router")
except Exception as e:
pytest.fail(f"Failed to inspect Router internals: {e}")
if __name__ == "__main__":
asyncio.run(test_router_uses_correct_redis_db())