litellm/tests/test_litellm/proxy
Tin Chi Lo ffe4e704d4 feat(complexity_router)!: require every tier to name at least one model
BREAKING CHANGE: a complexity_router_config.tiers map that omits a tier, or names one
with an empty pool or an empty pin, is now rejected at config load

A tier with no models of its own did not route nowhere; it routed somewhere else.
Resolution fell through to another tier's pool or to default_model, so traffic an
operator had classified as COMPLEX was answered by whatever the chain reached, and the
only evidence was in a spend log. That substitution is what this removes: the model
named for a tier is the model that tier gets

The check runs on ComplexityRouterConfig, so it covers config.yaml, /model/new, the SDK
and the UI alike, and it names every missing tier at once rather than one per restart.
Omitting `tiers` entirely is unaffected and still fills in all four defaults, so this
only reaches configs that opted into naming tiers and left some out

Three behaviors become unreachable and their tests now assert the rejection instead:
default_model standing in for an unconfigured tier, the empty-pool error raised when a
tier was first selected rather than at load, and escalation skipping an intermediate
tier that had no models. The fallback code paths stay as defense for configs built
outside the validator; removing them is a separate change

The repo's own suites carried 28 partial tiers maps, all of them incidental setup for
tests about something else, which is a fair signal that real configs do the same. They
are completed here without changing what each test exercises
2026-08-03 15:25:32 -07:00
..
_experimental/mcp_server fix(ui): land general login on the keys dashboard, send MCP consent to /ui/connect 2026-08-01 16:09:30 -07:00
a2a fix(a2a): reject malformed protocolVersion suffixes while keeping semver prereleases 2026-07-21 13:24:58 -07:00
agent_endpoints fix(a2a): keep config-defined agents registered and accept the documented agents: key (#35163) 2026-08-01 12:39:13 -07:00
analytics_endpoints feat(ui): split failed requests into their own series on the cache dashboard (#34862) 2026-07-29 09:48:17 -07:00
anthropic_endpoints feat: litellm oss staging (#31935) 2026-07-03 09:27:31 +05:30
auth fix(proxy): backfill null user_email on existing users during JWT auth (#34588) 2026-08-03 12:55:10 -07:00
batches_endpoints fix(proxy): resolve named credentials on provider-only batch and files calls 2026-07-28 18:57:15 -07:00
client feat(cli): read base_url from persistent config file (#35015) 2026-07-29 18:25:05 -07:00
common_utils fix(proxy): publish router_settings changes so peer pods apply them on resync 2026-07-31 22:52:00 -07:00
config_resolvers feat(proxy): add SAML 2.0 SSO for the admin UI (#31429) 2026-07-24 12:51:28 -07:00
db fix(spend): bound each spend-log write statement by payload bytes (#34956) 2026-08-01 13:53:36 -07:00
discovery_endpoints chore: litellm oss staging160626 (#30527) 2026-06-16 18:23:13 -07:00
enterprise_billing feat(proxy): push-based OTLP billable-request metering for enterprise deployments (#31592) 2026-07-15 12:12:52 -07:00
experimental/mcp_server
google_endpoints chore: litellm oss staging160626 (#30527) 2026-06-16 18:23:13 -07:00
guardrails fix(guardrails): run bedrock guardrail on MCP tool calls in during_mcp_call mode (#35149) 2026-07-31 11:33:14 -07:00
health_endpoints fix(proxy): authorize /health/test_connection against loaded deployment's team_id (VERIA-441) (#31767) 2026-07-01 17:05:49 -07:00
hooks Merge pull request #35422 from BerriAI/litellm_fix_tpm_only_dynamic_rate_limit 2026-08-01 13:02:11 -07:00
image_endpoints fix(proxy): extend response headers hook to streaming, TTS, image gen, and pass-through (#24232) 2026-06-09 22:10:23 +02:00
logging_endpoints feat(proxy): add POST /v1/callbacks/logs to replay logging payloads through callbacks (#31134) 2026-06-24 15:25:10 -07:00
management_endpoints feat(complexity_router)!: require every tier to name at least one model 2026-08-03 15:25:32 -07:00
management_helpers fix(proxy): restore atomic user upsert when adding team members (#34457) 2026-07-24 02:22:34 +00:00
memory Litellm memory improvements v2 (#26541) 2026-04-25 19:03:43 -07:00
middleware feat(proxy): push-based OTLP billable-request metering for enterprise deployments (#31592) 2026-07-15 12:12:52 -07:00
openai_files_endpoint fix(proxy): honor key-level model allowlist in provider-only credential resolution 2026-07-28 21:11:50 -07:00
pass_through_endpoints test: patch unified guardrail mapping global instead of loader to fix order-dependent flake 2026-07-30 20:55:32 -07:00
policy_engine fix(policy_engine): warn that the config-defined policy reactivates when all DB versions are deleted 2026-07-30 19:48:35 -07:00
prompts style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
proxy_server feat(complexity_router)!: require every tier to name at least one model 2026-08-03 15:25:32 -07:00
public_endpoints fix(agents): allow optional securityScheme fields so /public/agent_hub does not 500 (#33897) 2026-07-20 18:13:09 -07:00
rag_endpoints fix(rag): track LLM completion usage and spend for /v1/rag/query (#32438) 2026-07-17 17:45:27 +00:00
realtime_endpoints chore: litellm oss 170626 (#30637) 2026-06-17 21:11:12 -07:00
response_api_endpoints Litellm websocket improvements (#29563) 2026-06-03 11:48:35 -07:00
shutdown feat(proxy): native /health/drain preStop hook for graceful shutdown (#29439) 2026-06-02 16:30:44 -07:00
spend_tracking feat(ui): show which log rows are the auto-router's own classifier calls (#35304) 2026-07-31 11:51:36 -07:00
test_configs
types_utils fix(proxy): resolve router_settings.plugins dotted paths and load plugins from installed packages (#33644) 2026-07-17 11:23:18 -07:00
ui_crud_endpoints feat(teams): apply default organization to new teams from default team settings (#35540) 2026-08-03 12:57:12 -07:00
utils fix(spend): bound each spend-log write statement by payload bytes (#34956) 2026-08-01 13:53:36 -07:00
vector_store_endpoints test(vector_store): update credential resolution assertion for team_id kwarg 2026-07-18 18:41:12 +00:00
video_endpoints test(videos): add 1:1 test file scaffold for videos component paths (#30631) 2026-06-29 09:12:51 +05:30
__init__.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
conftest.py fix(proxy): avoid DB outage during planned RDS IAM rotation (#34749) 2026-07-28 13:27:50 -07:00
test_aiohttp_cleanup_closed.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_aiohttp_session_recovery.py fix: use AsyncMock for concurrent test consistency 2026-03-18 00:54:23 +00:00
test_api_key_masking_in_errors.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_audio_speech_prometheus_hooks.py fix(proxy): extend response headers hook to streaming, TTS, image gen, and pass-through (#24232) 2026-06-09 22:10:23 +02:00
test_batch_expiry.py fix(proxy): strip LiteLLM policy tracking from OpenAI batch metadata (#28425) 2026-05-26 11:35:42 -07:00
test_batch_metadata_none_fix.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_batch_retrieve_bedrock.py fix(proxy/batches): forward model to retrieve_batch for bedrock 2026-04-29 22:48:03 +02:00
test_batch_x_litellm_model_encoding.py test(batches): move orphan tests into tests/test_litellm for CI coverage (#30510) 2026-06-16 10:20:59 -07:00
test_blocked_response_usage.py feat: litellm oss staging (#31935) 2026-07-03 09:27:31 +05:30
test_budget_reservation.py revert(proxy)!: stop enforcing user budget on team keys (#35271) 2026-07-30 20:19:49 +00:00
test_caching_routes.py Litellm oss staging 040626 (#29671) 2026-06-04 11:07:20 -07:00
test_chat_completion_metadata.py
test_common_request_processing.py fix(proxy): apply key/team router_settings.model_group_alias (#35486) 2026-08-03 22:09:47 +00:00
test_component_allowlists.py fix(gateway): keep the Prometheus /metrics Mount in the gateway route trim (#32317) 2026-07-07 18:36:38 +03:00
test_cors_config.py refactor: extract _get_cors_config() for testability, fix no-op CORS tests 2026-04-11 22:24:04 +05:30
test_custom_proxy.py
test_dynamic_mcp_route.py Litellm oss staging 040626 (#29671) 2026-06-04 11:07:20 -07:00
test_empty_model_list.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_enforce_user_param.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_fallback_management_endpoints.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_fastapi_offline_routes.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_filter_models_by_team_access_group.py fix: resolve access group names in _filter_models_by_team_id (#25224) 2026-05-01 11:55:36 +05:30
test_health_check_functions.py feat(proxy): skip disable_background_health_check models on GET /health when flag set (#27716) 2026-05-13 09:49:05 -07:00
test_health_check_max_tokens.py fix: skip health check for semantic auto_router deployments (#31668) 2026-06-29 19:47:20 -07:00
test_langfuse_passthrough_security.py chore(callbacks): guard dynamic integration hosts 2026-04-30 14:27:19 -07:00
test_lazy_openapi_snapshot.py [Fix] Tests: Move Misplaced Import in Lazy OpenAPI Snapshot Test 2026-05-01 14:24:53 -07:00
test_litellm_pre_call_utils.py feat(spend-logs): record when a spend log row is the auto-router's own classifier call (#35300) 2026-07-30 19:26:42 -07:00
test_max_budget_env_var.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_mcp_asgi_response.py fix(mcp): surface upstream 401 for token-forwarding MCP servers (#27847) 2026-05-13 12:03:36 -07:00
test_model_based_routing_files_batches.py test(batches): move orphan tests into tests/test_litellm for CI coverage (#30510) 2026-06-16 10:20:59 -07:00
test_model_dump_with_preserved_fields.py
test_model_id_header_propagation.py feat(proxy): add x-litellm-model-name response header with deployment model string (#33698) 2026-07-17 20:29:42 -07:00
test_model_info_default_limits.py fix(proxy): align /v1/model/info with router deployments (#30025) 2026-06-10 19:38:21 -07:00
test_model_level_guardrails.py fix(proxy): apply key/team router_settings.model_group_alias (#35486) 2026-08-03 22:09:47 +00:00
test_model_list_healthy_only.py feat: litellm oss 110626 (#30202) 2026-06-11 22:30:26 -07:00
test_modify_response_streaming_passthrough.py fix(proxy): use e.request_data for logging_obj in ModifyResponseException streaming passthrough (#30800) 2026-06-18 23:29:08 -07:00
test_openapi_schema_validation.py fix(proxy): preserve HTTP operations when injecting WebSocket stubs into OpenAPI schema 2026-05-06 00:28:42 +02:00
test_plugin_routes.py feat: litellm plugin architecture v2 (#30688) 2026-06-20 20:37:22 -07:00
test_pricing_field_strip.py chore: litellm oss staging160626 (#30527) 2026-06-16 18:23:13 -07:00
test_prometheus_cleanup.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_provider_url_destination_guard.py chore(proxy): clean up request parameter validation and provider destination handling (#34189) 2026-07-22 00:57:58 +00:00
test_proxy_cli.py feat(proxy): bound DB statement and lock time via general_settings (#35496) 2026-08-01 13:54:17 -07:00
test_proxy_logging_hook_detection.py fix(proxy): recognize inherited apply_guardrail overrides and keep masking guardrails on their own stream hook 2026-07-30 15:33:49 -07:00
test_proxy_server.py Merge pull request #35423 from BerriAI/litellm_/mock-testing-feature-flag-6e30ad 2026-07-31 20:03:45 -07:00
test_proxy_types.py fix(proxy): allow /key/update to identify the key by key_alias (#34851) 2026-07-29 09:48:08 -07:00
test_proxy_utils.py feat(guardrails): scan and mask MCP tool results via post_mcp_call (#35155) 2026-07-30 14:10:26 -07:00
test_pyroscope.py Implement normalize_nonempty_secret_str function to trim whitespace from secrets and treat empty values as unset. Update proxy_server to use this function for Grafana credentials. Enhance tests to validate the new normalization behavior. 2026-05-04 18:17:31 +00:00
test_read_model_list.py feat: add minimal rust router + axum ai-gateway calling router.realtime (2/2) (#31135) 2026-06-23 19:16:34 -07:00
test_redis_auth_cache_flag.py fix(proxy): share CLI SSO login sessions across workers without enable_redis_auth_cache (#33261) 2026-07-22 10:29:34 -07:00
test_response_model_sanitization.py perf: eliminate per-request callback scanning on proxy hot path (#27858) 2026-05-14 09:28:31 -07:00
test_route_a2a_models.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_route_llm_request.py fix(ci): let the E2E proxy accept the mock testing params its suite sends 2026-08-01 14:57:42 -07:00
test_sensitive_route_auth.py chore(proxy): guard sensitive public endpoints 2026-04-30 11:52:47 -07:00
test_shared_health_check.py feat(proxy): skip disable_background_health_check models on GET /health when flag set (#27716) 2026-05-13 09:49:05 -07:00
test_spend_log_cleanup.py fix(proxy): roll up tool spend daily instead of scanning SpendLogs 2026-07-25 21:52:58 -07:00
test_swagger_chat_completions.py fix(proxy): avoid misleading multi-method operation ids 2026-04-30 20:44:14 -07:00
test_team_member_update.py feat(ui): add budget duration to edit team member form (#29717) 2026-06-06 17:24:55 -07:00
test_team_org_move.py fix(team_endpoints): auto-add SSO team members to org on move (proxy admin only) (#26377) 2026-04-24 08:36:25 -07:00
test_tools_allowlist_enforcement.py fix(responses-bridge): custom tool round-trip and allowlist preservation for Codex CLI (#32258) 2026-07-06 17:34:27 -07:00
test_update_llm_router_resilience.py fix(proxy): stop model writes 500ing on another pod's delete (#35400) 2026-07-31 18:10:48 -07:00