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Chris CoutinhoandClaude Opus 4.8 a188e9fced fix(vector): guard unbound doc_task + address review nits (#891)
Round-1 review on PR #891:
- Guard processor_task's broad except handler against an unbound doc_task
  (mirrors multi_user_processor_task): initialise doc_task=None before the loop
  and branch the error log. Fixes a latent NameError if receive() raises a
  non-TimeoutError/EndOfStream before the first document binds. Regression test
  added.
- Drop the unnecessary `from __future__ import annotations` in vector/_errors.py
  and express format_exception_group's non-group fast path as an explicit
  isinstance check.
- Add a copy_resource Destination-header encoding test (analogue to MOVE);
  strengthen the ExceptionGroup test to assert the full leaf repr survives.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-11 05:31:56 +02:00

51 lines
1.6 KiB
Python

"""Regression test for processor_task's exception handler (card 309 / PR #891).
If ``receive_stream.receive()`` raises something other than
``TimeoutError``/``EndOfStream`` before any document is bound, the broad
``except`` handler must not crash on an unbound ``doc_task`` name.
"""
from unittest.mock import MagicMock
import anyio
import pytest
from nextcloud_mcp_server.vector.processor import processor_task
class _ReceiveBoomThenEnd:
"""First receive() raises a non-Timeout error (no doc_task bound yet); the
second ends the stream so the loop exits."""
def __init__(self, shutdown: anyio.Event):
self._calls = 0
self._shutdown = shutdown
async def receive(self):
self._calls += 1
if self._calls == 1:
raise RuntimeError("transport blew up before any document")
self._shutdown.set()
raise anyio.EndOfStream
def statistics(self): # pragma: no cover - not reached on the error path
return MagicMock(current_buffer_used=0)
@pytest.mark.unit
async def test_processor_task_receive_error_does_not_raise_unbound(caplog):
shutdown = anyio.Event()
stream = _ReceiveBoomThenEnd(shutdown)
# Must complete without a NameError leaking out of the except handler.
with caplog.at_level("ERROR", logger="nextcloud_mcp_server.vector.processor"):
await processor_task(
worker_id=0,
receive_stream=stream, # type: ignore[arg-type]
shutdown_event=shutdown,
nc_client=MagicMock(),
user_id="alice",
)
assert any("RuntimeError" in rec.message for rec in caplog.records)