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test(mcp): verify forced cleanup of a stalled reference

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This commit is contained in:
Joshua Valluru 2026-09-26 11:50:38 -07:00
parent 61e683f693
commit 0b4f465921
1 changed files with 18 additions and 0 deletions
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18
tests/integration/mcp/test_mcp_official_conformance.py
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@ -74,3 +74,21 @@ def test_official_runner_rejects_unknown_scenario(tmp_path: Path) -> None:
with pytest.raises(AssertionError):
run_scenario(Path(os.environ["MCP_CONFORMANCE_ROOT"]), "http://127.0.0.1:1/mcp", "missing-scenario", output)
assert "missing-scenario" in (output / "runner.log").read_text()
def test_stalled_reference_is_killed_and_cannot_report_clean_teardown(tmp_path: Path, unused_tcp_port: int) -> None:
import signal
from contextlib import ExitStack
import psutil
children: Final = frozenset(child.pid for child in psutil.Process().children())
with ExitStack() as cleanup:
cleanup.enter_context(reference_server(Path(os.environ["MCP_CONFORMANCE_ROOT"]), tmp_path, unused_tcp_port))
started: Final = tuple(child for child in psutil.Process().children() if child.pid not in children)
assert len(started) == 1, started
victim: Final = started[0]
victim.send_signal(signal.SIGSTOP)
with pytest.raises(AssertionError, match="forced cleanup"):
cleanup.close()
assert not psutil.pid_exists(victim.pid), "Stopped official reference survived forced cleanup"