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ClinePass (the Cline API) is OpenAI-compatible apart from two quirks:
1. Non-streaming completions are nested under a `data` envelope --
`{"data": {"choices": [...]}, "success": true}` -- rather than returning
`choices` at the top level. Against the openai SDK this surfaces as
`r.choices` being None, not as an error. Streaming responses are *not*
enveloped, so SSE needs no special handling.
2. A bare model id is rejected with HTTP 400 "invalid model format. Expected
format: modelType/model", but LiteLLM strips its own `clinepass/` routing
prefix before the request is built, so it has to be restored.
Both are handled in ClinePassConfig, which inherits OpenAIGPTConfig and
overrides only transform_request/async_transform_request (prefix) and
transform_response (unwrap). Unwrapping rebuilds the httpx.Response around the
inner object, so the inherited OpenAI response transform -- including its
`reasoning` -> `reasoning_content` mapping, which Cline populates -- is reused
rather than duplicated.
A response transform is the reason this cannot be a declarative entry in
litellm/llms/openai_like/providers.json: JSON-configured providers are
dispatched to `_complete_custom_openai`, which builds the request via
provider_config but parses the response with convert_to_model_response_object
and never calls provider_config.transform_response. Under that dispatch the
unwrap is unreachable, so ClinePass gets an explicit branch in main.py routing
it to base_llm_http_handler.completion.
`clinepass` is still listed in openai_compatible_providers, which is what
routes an upstream 401 through _map_openai_exception to AuthenticationError;
the explicit dispatch branch precedes that list's catch-all, so membership does
not send it back to the SDK path.
Tests drive litellm.completion()/acompletion() against a mocked transport
rather than calling the transforms directly, so dispatch itself is covered --
a unit test that calls transform_response() proves the function is correct but
not that anything invokes it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
(cherry picked from commit 86b3486e7cc8834ec9067e45f966b18b7466ec3b)
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| .. | ||
| _support | ||
| agent_tests | ||
| audio_tests | ||
| base_sdk_tests | ||
| basic_proxy_startup_tests | ||
| batches_tests | ||
| benchmarks | ||
| code_coverage_tests | ||
| documentation_tests | ||
| e2e | ||
| guardrails_tests | ||
| harness_e2e | ||
| image_gen_tests | ||
| integration | ||
| litellm_utils_tests | ||
| llm_responses_api_testing | ||
| llm_translation | ||
| load_tests | ||
| local_testing | ||
| logging_callback_tests | ||
| mcp_tests | ||
| multi_instance_e2e_tests | ||
| ocr_tests | ||
| openai_endpoints_tests | ||
| otel_tests | ||
| pass_through_tests | ||
| pass_through_unit_tests | ||
| proxy_admin_ui_tests | ||
| proxy_behavior | ||
| proxy_e2e_anthropic_messages_tests | ||
| proxy_migration_tests | ||
| proxy_security_tests | ||
| proxy_unit_tests | ||
| router_unit_tests | ||
| rust-python-harness | ||
| search_tests | ||
| spend_tracking_tests | ||
| store_model_in_db_tests | ||
| test_litellm | ||
| test_litellm_rust | ||
| unified_google_tests | ||
| unit | ||
| vector_store_tests | ||
| windows_tests | ||
| __init__.py | ||
| _fake_openai_endpoint_server.py | ||
| _flush_vcr_cache.py | ||
| _live_test_helpers.py | ||
| _openai_record_replay_proxy.py | ||
| _process_helpers.py | ||
| _vcr_conftest_common.py | ||
| _vcr_redis_persister.py | ||
| _wait_helpers.py | ||
| _ws_vcr.py | ||
| AGENTS.md | ||
| capturing_transport.py | ||
| eval_swe_bench.py | ||
| fake_openai_endpoint.py | ||
| gettysburg.wav | ||
| large_text.py | ||
| openai_batch_completions.jsonl | ||
| pyrightconfig.json | ||
| README.MD | ||
| test_anthropic_compaction_usage.py | ||
| test_budget_management.py | ||
| test_callbacks_on_proxy.py | ||
| test_debug_warning.py | ||
| test_default_encoding_non_root.py | ||
| test_end_users.py | ||
| test_fallbacks.py | ||
| test_gpt5_azure_temperature_support.py | ||
| test_health.py | ||
| test_keys.py | ||
| test_litellm_proxy_responses_config.py | ||
| test_logging.conf | ||
| test_models.py | ||
| test_new_vector_store_endpoints.py | ||
| test_openai_endpoints.py | ||
| test_otel_thread_leak.py | ||
| test_presidio_latency.py | ||
| test_proxy_server_non_root.py | ||
| test_ratelimit.py | ||
| test_resource_cleanup.py | ||
| test_rust_python_harness.py | ||
| test_service_logger_otel.py | ||
| test_spend_logs.py | ||
| test_team.py | ||
| test_team_logging.py | ||
| test_team_members.py | ||
| test_users.py | ||
| white_100x100.png | ||
In total litellm runs 1000+ tests
[02/20/2025] Update:
To make it easier to contribute and map what behavior is tested,
we've started mapping the litellm directory in tests/unit
This folder can only run mock tests.