* test(proxy/utils): pin ProxyLogging behavior
Add behavior-pinning tests for the ProxyLogging cluster in
litellm/proxy/utils.py under tests/test_litellm/proxy/utils/proxy_logging/.
Covers InternalUsageCache, _CallbackCapabilities, top-of-file helpers
(print_verbose, _get_email_logger_class, _accepts_litellm_call_info,
_enrich_http_exception_with_guardrail_context), the full ProxyLogging
class (lifecycle, MCP-LLM bridging, capability probes, guardrail
pipeline, pre/during/post/streaming hooks, alerting), plus the
bottom-of-region helpers (on_backoff, jsonify_object, _lookup_deprecated_key).
Each pinned symbol has happy-path and error-path coverage; happy paths
use direct dict-equality with three or more keys (or HiddenParams /
Pydantic model_validate where the surface is a Pydantic shape). The
subdirectory carries a local _pin_check.py and _coverage_check.py that
enforce the gate without surfacing numeric thresholds in CI logs.
Wires tests/test_litellm/proxy/utils into the existing test-path block
in .github/workflows/test-unit-proxy-endpoints.yml.
* test(proxy/utils): drop unused mock_httpx_client fixture
Declared in conftest.py but never referenced by any test. Removing
the dead fixture per Greptile P2 feedback.
* test(proxy/utils): drop local-only gate scripts from PR
_pin_check.py and _coverage_check.py are local stopping signals (not
wired into CI, consume a gitignored .pin_list.txt). They served their
purpose telling the engineer when to stop writing tests; the pytest
suite is the artifact that belongs in the repo.
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Co-authored-by: Claude <noreply@anthropic.com>
yuneng-jiang