17bfa420e4
* fix(router): discard oldest entry when trimming latency list in lowest_latency strategy The lowest_latency routing strategy keeps a rolling window of the most recent latency and time-to-first-token measurements per deployment. When the window is full, the strategy was discarding the *newest* value instead of the oldest, because the trim used `[: max_latency_list_size - 1]` (keeping indices 0..N-2) rather than `[1:]` (dropping index 0 and keeping indices 1..N-1). Since new values are appended at the end, the bug meant the most recent measurement was always dropped once the list reached capacity. The routing decisions then relied on stale data (including any early-spike values that never aged out), and timeout penalties written via `async_log_failure_event` were silently discarded as well. Fix the slice in all five call sites (sync + async log_success_event for both latency and time_to_first_token, and async_log_failure_event for the timeout penalty) and add regression tests covering each path. * test(router): cover async TTFT trim path in lowest_latency regression tests Adds test_ttft_list_trimming_discards_oldest_entry_async, an async counterpart to test_ttft_list_trimming_discards_oldest_entry that drives async_log_success_event with a ModelResponse and completion_start_time so the async time_to_first_token trim branch is actually exercised. Previously no test touched that code path: the sync TTFT test used log_success_event, and the async latency test passed a plain dict response_obj without stream/completion_start_time, so TTFT was never computed and the async trim was unreached. Verified load-bearing by reverting only the async TTFT slice — the new test fails and all others pass. * format |
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|---|---|---|
| .. | ||
| agent_tests | ||
| audio_tests | ||
| basic_proxy_startup_tests | ||
| batches_tests | ||
| benchmarks | ||
| code_coverage_tests | ||
| documentation_tests | ||
| enterprise | ||
| guardrails_tests | ||
| image_gen_tests | ||
| litellm | ||
| litellm_core_utils | ||
| litellm_utils_tests | ||
| litellm-proxy-extras | ||
| llm_responses_api_testing | ||
| llm_translation | ||
| load_tests | ||
| local_testing | ||
| logging_callback_tests | ||
| mcp_tests | ||
| multi_instance_e2e_tests | ||
| ocr_tests | ||
| old_proxy_tests/tests | ||
| openai_endpoints_tests | ||
| otel_tests | ||
| pass_through_tests | ||
| pass_through_unit_tests | ||
| proxy_admin_ui_tests | ||
| proxy_e2e_anthropic_messages_tests | ||
| proxy_security_tests | ||
| proxy_unit_tests | ||
| router_unit_tests | ||
| scim_tests | ||
| search_tests | ||
| spend_tracking_tests | ||
| store_model_in_db_tests | ||
| test_litellm | ||
| unified_google_tests | ||
| vector_store_tests | ||
| windows_tests | ||
| __init__.py | ||
| gettysburg.wav | ||
| large_text.py | ||
| openai_batch_completions.jsonl | ||
| README.MD | ||
| test_budget_management.py | ||
| test_callbacks_on_proxy.py | ||
| test_config.py | ||
| test_debug_warning.py | ||
| test_default_encoding_non_root.py | ||
| test_end_users.py | ||
| test_entrypoint.py | ||
| test_fallbacks.py | ||
| test_gpt5_azure_temperature_support.py | ||
| test_health.py | ||
| test_keys.py | ||
| test_litellm_proxy_responses_config.py | ||
| test_logging.conf | ||
| test_models.py | ||
| test_new_vector_store_endpoints.py | ||
| test_openai_endpoints.py | ||
| test_organizations.py | ||
| test_otel_thread_leak.py | ||
| test_passthrough_endpoints.py | ||
| test_presidio_latency.py | ||
| test_proxy_server_non_root.py | ||
| test_ratelimit.py | ||
| test_resource_cleanup.py | ||
| test_service_logger_otel.py | ||
| test_spend_logs.py | ||
| test_team_logging.py | ||
| test_team_members.py | ||
| test_team.py | ||
| test_users.py | ||
In total litellm runs 1000+ tests
[02/20/2025] Update:
To make it easier to contribute and map what behavior is tested,
we've started mapping the litellm directory in tests/test_litellm
This folder can only run mock tests.