litellm/tests/test_litellm/responses/test_dispatch.py
2026-09-17 11:06:46 -07:00

322 lines
12 KiB
Python

import inspect
from collections.abc import Awaitable, Callable, Mapping
from typing import Final, cast # noqa: TID251 # narrows legacy callable signatures for inspect
import pytest
import litellm
from litellm.responses import dispatch as responses_dispatch
from litellm.responses import main as python_responses
from litellm.responses.dispatch import (
_ADISPATCH, # pyright: ignore[reportPrivateUsage] # tests configured dispatch
_DISPATCH, # pyright: ignore[reportPrivateUsage] # tests configured dispatch
)
from litellm.rust_bridge import catalog
from litellm.rust_bridge.bindings import NativeBinding
from litellm.rust_bridge.catalog import Route, Rule
from litellm.rust_bridge.configuration import Rollout
from litellm.rust_bridge.responses.entrypoints import (
NATIVE_ARESPONSES,
NATIVE_RESPONSES,
LiteLLMResponsesRequest,
NativeAresponses,
NativeResponses,
)
from litellm.types.llms.openai import ResponsesAPIResponse
INPUT: Final = [{"role": "user", "content": "hi"}]
PYTHON_RULES: Final = ()
RUST_RULES: Final = (Rule(Route.RESPONSES, Rollout.RUST_REQUIRED),)
def _response(model: str = "gpt-4o") -> ResponsesAPIResponse:
return ResponsesAPIResponse(
id="resp_test", object="response", created_at=0, model=model, output=[], status="completed"
)
def responses_binding(native: NativeResponses | None) -> NativeBinding[NativeResponses]:
binding: Final[NativeBinding[NativeResponses]] = NativeBinding("responses", validate=lambda _: None)
binding.override(native)
return binding
def aresponses_binding(native: NativeAresponses | None) -> NativeBinding[NativeAresponses]:
binding: Final[NativeBinding[NativeAresponses]] = NativeBinding("aresponses", validate=lambda _: None)
binding.override(native)
return binding
def test_public_signature_is_the_legacy_signature() -> None:
public_responses: Final = cast(Callable[..., object], litellm.responses)
legacy_responses: Final = cast(Callable[..., object], python_responses.responses)
public_aresponses: Final = cast(Callable[..., object], litellm.aresponses)
legacy_aresponses: Final = cast(Callable[..., object], python_responses.aresponses)
assert inspect.signature(public_responses) == inspect.signature(legacy_responses)
assert inspect.signature(public_aresponses) == inspect.signature(legacy_aresponses)
def test_python_route_forwards_original_call_shape() -> None:
metadata: Final = {"user_id": "u"}
args: Final[tuple[object, ...]] = (INPUT, "gpt-4o")
kwargs: Final[Mapping[str, object]] = {"temperature": 0.1, "litellm_metadata": metadata}
captured: Final[list[tuple[tuple[object, ...], Mapping[str, object]]]] = []
response: Final = _response()
def python(*call_args: object, **call_kwargs: object) -> ResponsesAPIResponse: # kwargs-ok: records call shape
captured.append((call_args, call_kwargs))
return response
def native(
request: LiteLLMResponsesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> ResponsesAPIResponse:
pytest.fail("Python-only dispatch must not call native")
assert (
_DISPATCH.run(
args,
kwargs,
python=python,
binding=responses_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=PYTHON_RULES,
)
is response
)
call_args, call_kwargs = captured[0]
assert call_args == args
assert call_args[0] is INPUT
assert call_kwargs == kwargs
assert call_kwargs["litellm_metadata"] is metadata
assert kwargs == {"temperature": 0.1, "litellm_metadata": metadata}
@pytest.mark.asyncio
async def test_async_python_route_forwards_original_call_shape() -> None:
metadata: Final = {"user_id": "u"}
args: Final[tuple[object, ...]] = (INPUT, "gpt-4o")
kwargs: Final[Mapping[str, object]] = {"temperature": 0.1, "litellm_metadata": metadata}
captured: Final[list[tuple[tuple[object, ...], Mapping[str, object]]]] = []
response: Final = _response()
async def python(
*call_args: object, **call_kwargs: object # kwargs-ok: records call shape
) -> ResponsesAPIResponse:
captured.append((call_args, call_kwargs))
return response
async def native(
request: LiteLLMResponsesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> ResponsesAPIResponse:
pytest.fail("Python-only dispatch must not call native")
result: Final = await _ADISPATCH.arun(
args,
kwargs,
python=python,
binding=aresponses_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=PYTHON_RULES,
)
assert result is response
call_args, call_kwargs = captured[0]
assert call_args == args
assert call_args[0] is INPUT
assert call_kwargs == kwargs
assert call_kwargs["litellm_metadata"] is metadata
assert kwargs == {"temperature": 0.1, "litellm_metadata": metadata}
def test_native_receives_normalized_request_and_original_call_shape() -> None:
metadata: Final = {"user_id": "u"}
extra_headers: Final = {"x-test": "1"}
args: Final[tuple[object, ...]] = (INPUT, "anthropic/claude-sonnet-4-5")
kwargs: Final[Mapping[str, object]] = {
"stream": True,
"api_key": "sk-test",
"base_url": "https://example.invalid",
"extra_headers": extra_headers,
"custom_llm_provider": "anthropic",
"litellm_metadata": metadata,
}
captured: Final[
list[tuple[LiteLLMResponsesRequest, tuple[object, ...], Mapping[str, object]]]
] = []
response: Final = _response("anthropic/claude-sonnet-4-5")
def python(*call_args: object, **call_kwargs: object) -> ResponsesAPIResponse: # kwargs-ok: rejected fallback
pytest.fail("Required Rust dispatch must not call Python")
def native(
request: LiteLLMResponsesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> ResponsesAPIResponse:
captured.append((request, args, kwargs))
return response
result: Final = _DISPATCH.run(
args,
kwargs,
python=python,
binding=responses_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=RUST_RULES,
)
request, call_args, call_kwargs = captured[0]
assert result is response
assert request.model == "anthropic/claude-sonnet-4-5"
assert request.input is INPUT
assert request.stream is True
assert request.api_key == "sk-test"
assert request.api_base == "https://example.invalid"
assert request.custom_llm_provider == "anthropic"
assert request.extra_headers is extra_headers
assert request.kwargs == {
"api_key": "sk-test",
"base_url": "https://example.invalid",
"litellm_metadata": metadata,
}
assert request.kwargs["litellm_metadata"] is metadata
assert call_args == args
assert call_args[0] is INPUT
assert call_kwargs == kwargs
assert call_kwargs["extra_headers"] is extra_headers
assert call_kwargs["litellm_metadata"] is metadata
def test_internal_async_marker_bypasses_native() -> None:
args: Final[tuple[object, ...]] = (INPUT, "gpt-4o")
kwargs: Final[Mapping[str, object]] = {"aresponses": True}
captured: Final[list[tuple[tuple[object, ...], Mapping[str, object]]]] = []
response: Final = _response()
def python(*call_args: object, **call_kwargs: object) -> ResponsesAPIResponse: # kwargs-ok: records call shape
captured.append((call_args, call_kwargs))
return response
def native(
request: LiteLLMResponsesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> ResponsesAPIResponse:
pytest.fail("aresponses' inner responses call must stay on Python")
assert (
_DISPATCH.run(
args,
kwargs,
python=python,
binding=responses_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=RUST_RULES,
)
is response
)
assert captured == [(args, kwargs)]
@pytest.mark.parametrize(
("args", "kwargs"),
(
((INPUT, "gpt-4o"), {"model": "duplicate"}),
((), {}),
),
)
def test_binding_errors_delegate_unchanged_to_python(
args: tuple[object, ...], kwargs: Mapping[str, object]
) -> None:
captured: Final[list[tuple[tuple[object, ...], Mapping[str, object]]]] = []
response: Final = _response()
def python(*call_args: object, **call_kwargs: object) -> ResponsesAPIResponse: # kwargs-ok: records invalid call
captured.append((call_args, call_kwargs))
return response
def native(
request: LiteLLMResponsesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> ResponsesAPIResponse:
pytest.fail("Binding failures must be delegated to Python")
assert (
_DISPATCH.run(
args,
kwargs,
python=python,
binding=responses_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=RUST_RULES,
)
is response
)
assert captured == [(args, kwargs)]
def test_public_responses_routes_through_dispatch(monkeypatch: pytest.MonkeyPatch) -> None:
captured: Final[list[LiteLLMResponsesRequest]] = []
expected: Final = _response()
def native(
request: LiteLLMResponsesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> ResponsesAPIResponse:
captured.append(request)
return expected
NATIVE_RESPONSES.override(native)
monkeypatch.setattr(catalog, "RULES", RUST_RULES)
public_responses: Final = cast(Callable[..., ResponsesAPIResponse], litellm.responses)
try:
result: Final = public_responses(input=INPUT, model="gpt-4o")
finally:
NATIVE_RESPONSES.reset()
assert result is expected
assert [request.model for request in captured] == ["gpt-4o"]
@pytest.mark.asyncio
async def test_public_aresponses_routes_through_dispatch(monkeypatch: pytest.MonkeyPatch) -> None:
captured: Final[list[LiteLLMResponsesRequest]] = []
expected: Final = _response()
async def native(
request: LiteLLMResponsesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> ResponsesAPIResponse:
captured.append(request)
return expected
NATIVE_ARESPONSES.override(native)
monkeypatch.setattr(catalog, "RULES", RUST_RULES)
public_aresponses: Final = cast(Callable[..., Awaitable[ResponsesAPIResponse]], litellm.aresponses)
try:
result: Final = await public_aresponses(input=INPUT, model="gpt-4o")
finally:
NATIVE_ARESPONSES.reset()
assert result is expected
assert [request.model for request in captured] == ["gpt-4o"]
def test_responses_with_retries_uses_the_dispatch_entrypoint(monkeypatch: pytest.MonkeyPatch) -> None:
calls: Final[list[Mapping[str, object]]] = []
expected: Final = _response()
def dispatch_responses(*args: object, **kwargs: object) -> ResponsesAPIResponse: # kwargs-ok: records call shape
calls.append(kwargs)
return expected
monkeypatch.setattr(responses_dispatch, "responses", dispatch_responses)
retry: Final = cast(Callable[..., ResponsesAPIResponse], litellm.responses_with_retries)
result: Final = retry(input=INPUT, model="gpt-4o", num_retries=1)
assert result is expected
assert calls[0]["num_retries"] == 0
assert calls[0]["max_retries"] == 0