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from collections.abc import AsyncIterator
from unittest.mock import MagicMock
import pytest
from free_claude_code.application.execution import ProviderExecutor
from free_claude_code.application.routing import ResolvedModel, RoutedMessagesRequest
from free_claude_code.config.reasoning import ReasoningPreference
from free_claude_code.core.anthropic.models import Message, MessagesRequest
from free_claude_code.core.async_iterators import AsyncCloseable
from free_claude_code.core.reasoning import ReasoningPolicy
class FakeProvider:
def __init__(self) -> None:
self.preflight_calls: list[tuple[MessagesRequest, ReasoningPolicy]] = []
self.stream_calls: list[dict[str, object]] = []
self.stream_close_calls = 0
def preflight_stream(
self,
request: MessagesRequest,
*,
reasoning: ReasoningPolicy,
) -> None:
self.preflight_calls.append((request, reasoning))
async def stream_response(
self,
request: MessagesRequest,
input_tokens: int = 0,
*,
request_id: str | None = None,
response_model: str | None = None,
reasoning: ReasoningPolicy,
) -> AsyncIterator[str]:
self.stream_calls.append(
{
"request": request,
"input_tokens": input_tokens,
"request_id": request_id,
"response_model": response_model,
"reasoning": reasoning,
}
)
try:
yield "event: message_stop\ndata: {}\n\n"
finally:
self.stream_close_calls += 1
class FailingPreflightProvider(FakeProvider):
def preflight_stream(
self,
request: MessagesRequest,
*,
reasoning: ReasoningPolicy,
) -> None:
raise ValueError("invalid provider request")
class FailingStreamConstructionProvider(FakeProvider):
def stream_response(
self,
request: MessagesRequest,
input_tokens: int = 0,
*,
request_id: str | None = None,
response_model: str | None = None,
reasoning: ReasoningPolicy,
) -> AsyncIterator[str]:
raise RuntimeError("stream construction failed")
def _routed_request() -> RoutedMessagesRequest:
request = MessagesRequest(
model="provider-model",
messages=[Message(role="user", content="hello")],
)
return RoutedMessagesRequest(
request=request,
resolved=ResolvedModel(
original_model="gateway-model",
provider_id="provider",
provider_model="provider-model",
provider_model_ref="provider/provider-model",
reasoning_preference=ReasoningPreference.CLIENT,
),
reasoning=ReasoningPolicy.on(),
)
@pytest.mark.asyncio
async def test_executor_uses_structural_provider_port_and_preflights_eagerly() -> None:
provider = FakeProvider()
routed = _routed_request()
request = routed.request
executor = ProviderExecutor(
lambda _provider_id: provider,
token_counter=lambda _messages, _system, _tools: 17,
)
stream = executor.stream(
routed,
wire_api="messages",
raw_log_label="FULL_PAYLOAD",
raw_log_payload=request.model_dump(),
request_id="req_application",
)
assert provider.preflight_calls == [(request, ReasoningPolicy.on())]
assert [chunk async for chunk in stream] == ["event: message_stop\ndata: {}\n\n"]
assert provider.stream_calls == [
{
"request": request,
"input_tokens": 17,
"request_id": "req_application",
"response_model": "gateway-model",
"reasoning": ReasoningPolicy.on(),
}
]
assert provider.stream_close_calls == 1
@pytest.mark.asyncio
async def test_closing_executor_stream_closes_provider_stream_once() -> None:
provider = FakeProvider()
routed = _routed_request()
executor = ProviderExecutor(
lambda _provider_id: provider,
token_counter=lambda _messages, _system, _tools: 17,
)
stream = executor.stream(
routed,
wire_api="messages",
raw_log_label="FULL_PAYLOAD",
raw_log_payload={},
request_id="req_early_close",
)
assert await anext(stream) == "event: message_stop\ndata: {}\n\n"
assert isinstance(stream, AsyncCloseable)
await stream.aclose()
assert provider.stream_close_calls == 1
@pytest.mark.asyncio
async def test_stream_construction_failure_remains_deferred_to_iteration() -> None:
provider = FailingStreamConstructionProvider()
executor = ProviderExecutor(
lambda _provider_id: provider,
token_counter=lambda _messages, _system, _tools: 17,
)
stream = executor.stream(
_routed_request(),
wire_api="messages",
raw_log_label="FULL_PAYLOAD",
raw_log_payload={},
request_id="req_deferred_construction",
)
with pytest.raises(RuntimeError, match="stream construction failed"):
await anext(stream)
def test_executor_preflight_failure_stays_before_token_count_and_stream() -> None:
provider = FailingPreflightProvider()
token_counter = MagicMock(return_value=17)
executor = ProviderExecutor(
lambda _provider_id: provider,
token_counter=token_counter,
)
with pytest.raises(ValueError, match="invalid provider request"):
executor.stream(
_routed_request(),
wire_api="messages",
raw_log_label="FULL_PAYLOAD",
raw_log_payload={},
request_id="req_application",
)
token_counter.assert_not_called()
assert provider.stream_calls == []
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