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import litellm
import pytest
from litellm.types.utils import Choices, Message, ModelResponse, Usage
from openai.types.chat.chat_completion import ChatCompletion, Choice
from openai.types.chat.chat_completion_message import ChatCompletionMessage
from openai.types.completion_usage import CompletionUsage
from agents.extensions.models.litellm_model import LitellmModel
from agents.model_settings import ModelSettings
from agents.models.interface import ModelTracing
from agents.models.openai_chatcompletions import OpenAIChatCompletionsModel
@pytest.mark.allow_call_model_methods
@pytest.mark.asyncio
async def test_litellm_kwargs_forwarded(monkeypatch):
"""
Test that kwargs from ModelSettings are forwarded to litellm.acompletion.
"""
captured: dict[str, object] = {}
async def fake_acompletion(model, messages=None, **kwargs):
captured.update(kwargs)
msg = Message(role="assistant", content="test response")
choice = Choices(index=0, message=msg)
return ModelResponse(choices=[choice], usage=Usage(0, 0, 0))
monkeypatch.setattr(litellm, "acompletion", fake_acompletion)
settings = ModelSettings(
temperature=0.5,
extra_args={
"custom_param": "custom_value",
"seed": 42,
"stop": ["END"],
"logit_bias": {123: -100},
},
)
model = LitellmModel(model="test-model")
await model.get_response(
system_instructions=None,
input="test input",
model_settings=settings,
tools=[],
output_schema=None,
handoffs=[],
tracing=ModelTracing.DISABLED,
previous_response_id=None,
)
# Verify that all kwargs were passed through
assert captured["custom_param"] == "custom_value"
assert captured["seed"] == 42
assert captured["stop"] == ["END"]
assert captured["logit_bias"] == {123: -100}
# Verify regular parameters are still passed
assert captured["temperature"] == 0.5
@pytest.mark.allow_call_model_methods
@pytest.mark.asyncio
async def test_openai_chatcompletions_kwargs_forwarded(monkeypatch):
"""
Test that kwargs from ModelSettings are forwarded to OpenAI chat completions API.
"""
captured: dict[str, object] = {}
class MockChatCompletions:
async def create(self, **kwargs):
captured.update(kwargs)
msg = ChatCompletionMessage(role="assistant", content="test response")
choice = Choice(index=0, message=msg, finish_reason="stop")
return ChatCompletion(
id="test-id",
created=0,
model="gpt-4",
object="chat.completion",
choices=[choice],
usage=CompletionUsage(completion_tokens=5, prompt_tokens=10, total_tokens=15),
)
class MockChat:
def __init__(self):
self.completions = MockChatCompletions()
class MockClient:
def __init__(self):
self.chat = MockChat()
self.base_url = "https://api.openai.com/v1"
settings = ModelSettings(
temperature=0.7,
extra_args={
"seed": 123,
"logit_bias": {456: 10},
"stop": ["STOP", "END"],
"user": "test-user",
},
)
mock_client = MockClient()
model = OpenAIChatCompletionsModel(model="gpt-4", openai_client=mock_client) # type: ignore
await model.get_response(
system_instructions="Test system",
input="test input",
model_settings=settings,
tools=[],
output_schema=None,
handoffs=[],
tracing=ModelTracing.DISABLED,
previous_response_id=None,
)
# Verify that all kwargs were passed through
assert captured["seed"] == 123
assert captured["logit_bias"] == {456: 10}
assert captured["stop"] == ["STOP", "END"]
assert captured["user"] == "test-user"
# Verify regular parameters are still passed
assert captured["temperature"] == 0.7
@pytest.mark.allow_call_model_methods
@pytest.mark.asyncio
async def test_empty_kwargs_handling(monkeypatch):
"""
Test that empty or None kwargs are handled gracefully.
"""
captured: dict[str, object] = {}
async def fake_acompletion(model, messages=None, **kwargs):
captured.update(kwargs)
msg = Message(role="assistant", content="test response")
choice = Choices(index=0, message=msg)
return ModelResponse(choices=[choice], usage=Usage(0, 0, 0))
monkeypatch.setattr(litellm, "acompletion", fake_acompletion)
# Test with None kwargs
settings_none = ModelSettings(temperature=0.5, extra_args=None)
model = LitellmModel(model="test-model")
await model.get_response(
system_instructions=None,
input="test input",
model_settings=settings_none,
tools=[],
output_schema=None,
handoffs=[],
tracing=ModelTracing.DISABLED,
previous_response_id=None,
)
# Should work without error and include regular parameters
assert captured["temperature"] == 0.5
# Test with empty dict
captured.clear()
settings_empty = ModelSettings(temperature=0.3, extra_args={})
await model.get_response(
system_instructions=None,
input="test input",
model_settings=settings_empty,
tools=[],
output_schema=None,
handoffs=[],
tracing=ModelTracing.DISABLED,
previous_response_id=None,
)
# Should work without error and include regular parameters
assert captured["temperature"] == 0.3