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

287 lines
11 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.llms.anthropic.experimental_pass_through.messages import handler as python_messages
from litellm.messages.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, Rules
from litellm.rust_bridge.configuration import Rollout
from litellm.rust_bridge.messages.entrypoints import (
NATIVE_AMESSAGES,
NATIVE_MESSAGES,
LiteLLMMessagesRequest,
NativeAmessages,
NativeMessages,
)
from litellm.types.llms.anthropic_messages.anthropic_response import AnthropicMessagesResponse
MESSAGES: Final = [{"role": "user", "content": "hi"}]
PYTHON_RULES: Final[Rules] = ()
RUST_RULES: Final[Rules] = (Rule(Route.MESSAGES, Rollout.RUST_REQUIRED),)
def messages_binding(native: NativeMessages | None) -> NativeBinding[NativeMessages]:
binding: Final[NativeBinding[NativeMessages]] = NativeBinding(
"anthropic_messages_handler", validate=lambda _: None
)
binding.override(native)
return binding
def amessages_binding(native: NativeAmessages | None) -> NativeBinding[NativeAmessages]:
binding: Final[NativeBinding[NativeAmessages]] = NativeBinding("anthropic_messages", validate=lambda _: None)
binding.override(native)
return binding
def response(model: str = "claude-sonnet-4-5") -> AnthropicMessagesResponse:
return AnthropicMessagesResponse(id="msg_test", type="message", role="assistant", model=model, content=[])
def test_public_signature_is_the_legacy_signature() -> None:
public_messages: Final = cast(Callable[..., object], litellm.anthropic_messages_handler)
legacy_messages: Final = cast(Callable[..., object], python_messages.anthropic_messages_handler)
public_amessages: Final = cast(Callable[..., object], litellm.anthropic_messages)
legacy_amessages: Final = cast(Callable[..., object], python_messages.anthropic_messages)
assert inspect.signature(public_messages) == inspect.signature(legacy_messages)
assert inspect.signature(public_amessages) == inspect.signature(legacy_amessages)
def test_python_route_forwards_original_call_shape() -> None:
metadata: Final = {"user_id": "u"}
args: Final[tuple[object, ...]] = (16, MESSAGES, "claude-sonnet-4-5")
kwargs: Final[Mapping[str, object]] = {"temperature": 0.1, "litellm_metadata": metadata}
captured: Final[list[tuple[tuple[object, ...], Mapping[str, object]]]] = []
expected: Final = response()
def python(*call_args: object, **call_kwargs: object) -> AnthropicMessagesResponse: # kwargs-ok: records call shape
captured.append((call_args, call_kwargs))
return expected
def native(
request: LiteLLMMessagesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> AnthropicMessagesResponse:
pytest.fail("Python-only dispatch must not call native")
result: Final = _DISPATCH.run(
args,
kwargs,
python=python,
binding=messages_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=PYTHON_RULES,
)
assert result is expected
call_args, call_kwargs = captured[0]
assert call_args == args
assert call_args[1] is MESSAGES
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, ...]] = (16, MESSAGES, "claude-sonnet-4-5")
kwargs: Final[Mapping[str, object]] = {"temperature": 0.1, "litellm_metadata": metadata}
captured: Final[list[tuple[tuple[object, ...], Mapping[str, object]]]] = []
expected: Final = response()
async def python(
*call_args: object, **call_kwargs: object # kwargs-ok: records call shape
) -> AnthropicMessagesResponse:
captured.append((call_args, call_kwargs))
return expected
async def native(
request: LiteLLMMessagesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> AnthropicMessagesResponse:
pytest.fail("Python-only dispatch must not call native")
result: Final = await _ADISPATCH.arun(
args,
kwargs,
python=python,
binding=amessages_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=PYTHON_RULES,
)
assert result is expected
call_args, call_kwargs = captured[0]
assert call_args == args
assert call_args[1] is MESSAGES
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"}
args: Final[tuple[object, ...]] = (16, MESSAGES, "anthropic/claude-sonnet-4-5")
kwargs: Final[Mapping[str, object]] = {
"stream": True,
"api_key": "sk-test",
"api_base": "https://example.invalid",
"custom_llm_provider": "anthropic",
"litellm_metadata": metadata,
}
captured: Final[list[tuple[LiteLLMMessagesRequest, tuple[object, ...], Mapping[str, object]]]] = []
expected: Final = response("anthropic/claude-sonnet-4-5")
def python(*call_args: object, **call_kwargs: object) -> AnthropicMessagesResponse: # kwargs-ok: rejected fallback
pytest.fail("Required Rust dispatch must not call Python")
def native(
request: LiteLLMMessagesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> AnthropicMessagesResponse:
captured.append((request, args, kwargs))
return expected
result: Final = _DISPATCH.run(
args,
kwargs,
python=python,
binding=messages_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=RUST_RULES,
)
assert result is expected
request, call_args, call_kwargs = captured[0]
assert request.model == "anthropic/claude-sonnet-4-5"
assert request.messages is MESSAGES
assert request.max_tokens == 16
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.kwargs == {"litellm_metadata": metadata}
assert request.kwargs["litellm_metadata"] is metadata
assert call_args == args
assert call_args[1] is MESSAGES
assert call_kwargs == kwargs
assert call_kwargs["litellm_metadata"] is metadata
def test_internal_async_marker_bypasses_native() -> None:
args: Final[tuple[object, ...]] = (16, MESSAGES, "claude-sonnet-4-5")
kwargs: Final[Mapping[str, object]] = {"is_async": True}
captured: Final[list[tuple[tuple[object, ...], Mapping[str, object]]]] = []
expected: Final = response()
def python(*call_args: object, **call_kwargs: object) -> AnthropicMessagesResponse: # kwargs-ok: records call shape
captured.append((call_args, call_kwargs))
return expected
def native(
request: LiteLLMMessagesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> AnthropicMessagesResponse:
pytest.fail("The async handler's inner sync call must stay on Python")
result: Final = _DISPATCH.run(
args,
kwargs,
python=python,
binding=messages_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=RUST_RULES,
)
assert result is expected
assert captured == [(args, kwargs)]
@pytest.mark.parametrize(
("args", "kwargs"),
(
((16, MESSAGES, "claude-sonnet-4-5"), {"model": "duplicate"}),
((), {}),
),
)
def test_binding_errors_delegate_to_python(args: tuple[object, ...], kwargs: Mapping[str, object]) -> None:
captured: Final[list[tuple[tuple[object, ...], Mapping[str, object]]]] = []
expected: Final = response()
def python(*call_args: object, **call_kwargs: object) -> AnthropicMessagesResponse: # kwargs-ok: records invalid call
captured.append((call_args, call_kwargs))
return expected
def native(
request: LiteLLMMessagesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> AnthropicMessagesResponse:
pytest.fail("Binding failures must be delegated to Python")
result: Final = _DISPATCH.run(
args,
kwargs,
python=python,
binding=messages_binding(native),
native=lambda hook, request, call_args, call_kwargs: hook(request, call_args, call_kwargs),
rules=RUST_RULES,
)
assert result is expected
assert captured == [(args, kwargs)]
def test_anthropic_create_routes_through_dispatch(monkeypatch: pytest.MonkeyPatch) -> None:
captured: Final[list[LiteLLMMessagesRequest]] = []
expected: Final = response()
def native(
request: LiteLLMMessagesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> AnthropicMessagesResponse:
captured.append(request)
return expected
NATIVE_MESSAGES.override(native)
monkeypatch.setattr(catalog, "RULES", RUST_RULES)
public_create: Final = cast(Callable[..., AnthropicMessagesResponse], litellm.anthropic.create)
try:
result: Final = public_create(max_tokens=16, messages=MESSAGES, model="claude-sonnet-4-5")
finally:
NATIVE_MESSAGES.reset()
assert result is expected
assert [request.model for request in captured] == ["claude-sonnet-4-5"]
@pytest.mark.asyncio
async def test_anthropic_acreate_routes_through_dispatch(monkeypatch: pytest.MonkeyPatch) -> None:
captured: Final[list[LiteLLMMessagesRequest]] = []
expected: Final = response()
async def native(
request: LiteLLMMessagesRequest,
args: tuple[object, ...],
kwargs: Mapping[str, object],
) -> AnthropicMessagesResponse:
captured.append(request)
return expected
NATIVE_AMESSAGES.override(native)
monkeypatch.setattr(catalog, "RULES", RUST_RULES)
public_acreate: Final = cast(Callable[..., Awaitable[AnthropicMessagesResponse]], litellm.anthropic.acreate)
try:
result: Final = await public_acreate(max_tokens=16, messages=MESSAGES, model="claude-sonnet-4-5")
finally:
NATIVE_AMESSAGES.reset()
assert result is expected
assert [request.model for request in captured] == ["claude-sonnet-4-5"]