litellm/tests/unit/llms/openai/completion
paveln83 06cdee91da
fix(guardrails): scan and rewrite streamed /v1/completions under post_call guardrails (#49035)
* feat(guardrails): scan and rewrite streamed /v1/completions in post_call pipelines

Gives OpenAITextCompletionHandler a process_output_streaming_response that
assembles the buffered TextCompletionResponse chunks per choice index at end
of stream, runs the guardrail over the assembled text, and writes text
rewrites back into the first text-carrying chunk of each choice. Tests and
live proof still pending.

* fix(guardrails): scan and rewrite streamed /v1/completions under post_call guardrails

Assemble each choice's streamed text once the stream ends, run the guardrail on it, write a mask back into the buffered chunks, and end the stream with the guardrail's error on a block. User key metadata now goes through the shared metadata bucket so applied guardrails reach spend logs.

* test(guardrails): cover streamed /v1/completions under post_call guardrails

* fix(guardrails): keep Gray Swan key metadata, scan a cut-short text stream, and pass non-chunk frames through

* fix(guardrails): replace blocked text completion streams like chat, keep Gray Swan's vendor payload, scan text streams in the content filter

* fix(guardrails): release an unfinished choice's held text and omit usage the upstream never sent

The content filter's streaming hook held back the end of a choice until its
finish_reason, which litellm sends only for the first choice of an n>1
stream, so choice 1 lost its last characters on text and chat streams. A
closing chunk now releases every unfinished choice when the stream ends.

A blocked text stream's closing chunk reported 0/0 usage when the upstream
sent none; it now carries usage only when the upstream reported it.

* fix(guardrails): send no usage on the content filter's end-of-stream chunk

* fix(guardrails): keep the usage chunk last and log the masked text of streamed text completions

* fix(guardrails): stream Responses API events through the content filter as they arrive

* fix(guardrails): treat a null text completion choice index as choice zero when assembling streams

---------

Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
2026-10-29 08:46:49 -07:00
..
__init__.py test(unit): make every tests/unit directory a package so pytest collection is unique 2026-09-20 11:50:59 +00:00
test_completion_handler.py fix(streaming)!: send the include_usage chunk with an empty choices array (#47109) 2026-10-21 02:26:05 +00:00
test_handler.py feat(openai)!: honor per-deployment workload identity on non-chat routes (#39966) 2026-10-16 22:25:15 +00:00
test_text_completion_guardrail_handler.py fix(guardrails): scan and rewrite streamed /v1/completions under post_call guardrails (#49035) 2026-10-29 08:46:49 -07:00
test_text_completion_token_ids.py test: migrate nvidia, oci, ocr, oobabooga and openai legacy tests to tests/unit 2026-09-20 08:09:49 +00:00