[devin-ai-integration]

Summary

Code scan finding: only the object-attribute branch of TrackAPIPricingMixin.get_tokens_counts_from_response was exercised, so a provider returning dict-style usage (or no usable usage at all) could silently yield 0, 0 tokens and zero cost without any test catching it.

Adds two parametrized unit tests in tests/llm/test_tracking.py calling the method directly on a bare TrackAPIPricingMixin():

• parsing for usage.input_tokens/output_tokens, usage.prompt_tokens/completion_tokens, {"usage": {"input_tokens", "output_tokens"}} and {"usage": {"prompt_tokens", "completion_tokens"}}
• the fallback path returning (0, 0) and logging a warning when usage is missing or has no recognized fields

No production code changes.

Devin-Org: engineering

Link to Devin session: https://app.devin.ai/sessions/fdc03943209f453880727c8bf2f12fc0
Open in Devin Desktop: https://app.devin.ai/desktop/session/fdc03943209f453880727c8bf2f12fc0?variant=devin

[devin-ai-integration]

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