Drive real traffic through the proxy and read the events back out of the
Datadog Logs Search API to prove delivery instead of trusting the proxy. The
DatadogClient reads DD_API_KEY, DD_SITE and DD_APP_KEY from the environment and
polls the search API for a per-run marker stamped into each request
Three scenarios cover the contract: a batch of gpt-5.5 chat completions shipped
with no drops, the /v1/responses path on a claude-haiku-4-5 deployment
exercising the Responses-to-Anthropic translation, and a failed request that
must land as an error event. The e2e compose config enables the datadog (and
prometheus) callback so the delivery path is actually exercised, and the suite
skips unless all three credentials are set
* fix(e2e): define SpendTagsResponse/TagSpend so spend suite collects
spend_tracking/spend_e2e_client.py imported SpendTagsResponse and
TagSpend from models, but neither was ever defined, so importing the
client raised ImportError and pytest aborted collection for the whole
e2e session. The tag-spend tests had never run.
Model /spend/tags as it actually answers: a bare array of per-tag
aggregates, so SpendTagsResponse is a RootModel[list[TagSpend]] like the
existing SpendLogs. spend_by_tags read a nonexistent spend_per_tag field
that also wouldn't match the array shape; it now reads .root, matching
how spend_logs consumes its RootModel.
* test(e2e): close coverage gaps across chat/responses, provider features, batches, prometheus, and langfuse eviction
Adds regression nets and gap-surfacing tests:
A1 (llm_translation/test_deepseek_reasoning_e2e.py): control case proves the
DeepSeek reasoner returns reasoning_content; two xfail(strict) cases document
that reasoning_effort='none' and thinking type='disabled' are silently dropped
(LIT-3686 / GH #27453)
A2 (llm_translation/test_chat_completions_regression_e2e.py and test_responses_e2e.py):
parametrized regression net asserting real completion content, not just a 200,
across the configured providers for /chat/completions and /responses (GH #28991)
A3 (llm_translation/test_provider_features_e2e.py): asserts service_tier is
honored and prompt-cache read tokens grow on a repeated cacheable prefix
A4 (batches/test_batches_e2e.py): mints a rate-limited key so the batch pre-call
rate limiter runs, then asserts no unattributed spend row is left behind by the
internal input-file retrieval (LIT-3266)
A5 (logging/test_prometheus_cardinality_e2e.py): drives one chat per distinct
key_alias and asserts each alias gets its own labeled series on /metrics
A6 (test_litellm/.../specialty_caches/test_dynamic_logging_cache.py): xfail(strict)
regression proving eviction must not close an httpx client still held by an
in-flight caller (LIT-3221 / GH #13034)
Extends tests/e2e/models.py with the typed request and response fields these
tests read (reasoning_effort, thinking, service_tier, key_alias, cache usage
fields, spend-log api_key)
Co-authored-by: Cursor <cursoragent@cursor.com>
* test(e2e): drop unused litellm-regression-tests submodule
The e2e suite migrated the regression cases into this repo; nothing
imports the submodule at runtime (only a provenance comment references
it), so the .gitmodules entry and gitlink pointing at a personal repo
would just make upstream CI init a submodule it never uses. Remove both
to keep the change test-only.
* test(e2e): drop A6 langfuse-eviction xfail; keep PR to live e2e coverage
The dynamic_logging_cache strict-xfail documented an unfixed shared-httpx-client
close-on-eviction bug (LIT-3221 / GH #13034). That is a non-trivial fix (thread
cleanup vs shared client teardown) and belongs in its own PR, not this e2e
coverage PR, so revert the file to its base state.
---------
Co-authored-by: Cursor <cursoragent@cursor.com>
