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e2960e9e44
In our OpenAI API verification tests, some providers were still calling tools even when `tool_choice="none"` was passed in the chat completion requests. Because they aren't all respecting `tool_choice` properly, this adjusts our routing implementation to remove the `tools` and `tool_choice` from the request if `tool_choice="none"` is passed in so that it does not attempt to call any of those tools. Adjusting this in the router fixes this across all providers. This also cleans up the non-streaming chat completion responses for tools, ensuring it returns `None` instead of an empty list when there are no tool calls, to exactly match the OpenAI API responses in that case. I observed existing failures in our OpenAI API verification suite - see https://github.com/bbrowning/llama-stack-tests/blob/main/openai-api-verification/2025-04-27.md#together-llama-stack for the failing `test_chat_*_tool_choice_none` tests. All streaming and non-streaming variants were failing across all 3 tested models. After this change, all of those 6 failing tests are now passing with no regression in the other tests. I verified this via: ``` llama stack run --image-type venv \ tests/verifications/openai-api-verification-run.yaml ``` ``` python -m pytest -s -v \ 'tests/verifications/openai_api/test_chat_completion.py' \ --provider=together-llama-stack ``` The entire verification suite is not 100% on together.ai yet, but it's getting closer. This also increased the pass rate for fireworks.ai, and did not regress the groq or openai tests at all. Signed-off-by: Ben Browning <bbrownin@redhat.com> |
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