litellm/tests/unit/test_router
Mateo Wang f8217d2a03
fix(count_tokens): apply context_management edits in the Gemini /v1/messages/count_tokens count (#46843)
* fix(count_tokens): apply context_management edits in the Gemini /v1/messages/count_tokens count

/v1/messages runs clear_tool_uses context edits before it sends an Anthropic
body to a Gemini or Vertex AI deployment, but /v1/messages/count_tokens counted
the body unedited, so a request with older tool results cleared counted about
2.8x what inference bills.

The count now runs the same history and context-edit step inference runs,
honors additional_drop_params on the deployment, and skips compact edits so a
count never makes a paid summary call.

* fix(count_tokens): match the Gemini count to inference for compact edits and drop opt-outs

Run compact edits in the count without the summary call so trigger checks and
history slicing match /v1/messages, honor a request-level additional_drop_params,
keep the full body when any deployment in the model group drops context_management,
and answer 400 naming a block Gemini cannot count when an edit trigger fails on it

* fix(count_tokens): count the unedited body when an edit fails and honor deployment ids in the drop check

* fix(count_tokens): log a failed edit in the count at debug, since the send already logs it

* fix(count_tokens): resolve a deployment id before wildcard routes in the drop check, as the router does

* fix(count_tokens): honor the router-wide additional_drop_params opt-out in the drop check

The router merges default_litellm_params between the deployment and the request, so a router-wide context_management opt-out makes /v1/messages send the full history. The count now reads it in the same order. Adds the audit's wire tests for the count's context edits.

* fix(count_tokens): read the opt-out of a deployment the router serves by its litellm model name

* fix(count_tokens): read the opt-out and drop_params from the deployments the router and completion_model send to

* fix(messages): drop an invalid context_management spec under drop_params so the send matches the count

* fix(count_tokens): give Claude Code and Codex counts the drop_params default /v1/messages gives them

The proxy turns on drop_params for Claude Code and Codex user agents on /v1/messages. The count now applies the same default, so an invalid context_management spec drops on both endpoints instead of the count answering 400 while the send answers 200. The wire test also covers default_fallbacks, model_group_alias, and completion_model routes.

* test(count_tokens): cover a coding agent that turns drop_params off and stop two count tests running as Claude Code
2026-10-16 17:53:06 +00:00
..
__init__.py test: add __init__.py to every tests/unit directory phase 16 touches 2026-09-20 11:52:38 +00:00
test_enforce_model_rate_limits.py test: migrate phase 16 legacy tests to tests/unit 2026-09-20 10:59:02 +00:00
test_io_token_rate_limits.py test: migrate phase 16 legacy tests to tests/unit 2026-09-20 10:59:02 +00:00
test_router.py feat(router): mid-stream fallback continuation for chat completions (#41127) 2026-10-16 13:51:32 +00:00
test_router_callback_hook_sequence.py test: replace 61 live logging and otel tests with offline unit and integration coverage (#45362) 2026-10-08 15:55:57 -07:00
test_router_endpoints.py test: move the unit half of 126 mixed legacy files into tests/unit (#45090) 2026-10-07 14:07:43 -07:00
test_router_fallbacks.py test: move routing, caching and callback tests out of local_testing (#45761) 2026-10-10 09:33:09 -07:00
test_router_get_deployments.py fix(count_tokens): apply context_management edits in the Gemini /v1/messages/count_tokens count (#46843) 2026-10-16 17:53:06 +00:00
test_router_helper_utils.py fix: cap cold MCP schema workers at usable CPUs and deflake wall-clock unit tests (#45791) 2026-10-15 00:47:59 -07:00
test_router_max_parallel_requests.py test: move routing, caching and callback tests out of local_testing (#45761) 2026-10-10 09:33:09 -07:00
test_router_provider_endpoints.py test: make 77 legacy live tests offline in litellm_utils, router_unit and responses dirs (#45298) 2026-10-08 02:37:55 -07:00
test_router_retries.py test: move routing, caching and callback tests out of local_testing (#45761) 2026-10-10 09:33:09 -07:00
test_router_timeout.py test: move routing, caching and callback tests out of local_testing (#45761) 2026-10-10 09:33:09 -07:00
test_router_vector_store_endpoints.py test: migrate SDK and proxy-booting legacy CircleCI tests to their tiers (#45758) 2026-10-11 00:17:21 -07:00