litellm/tests/unit/test_process_helpers.py
yuneng-jiang f6882246d4
test: move tests/test_litellm root and small trees into tests/unit (#43186)
* ci: run the unit_selection.sh shard files on every event instead of only fork pull requests

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* ci: rename fork-flag to unit-flag now that it applies on every event

* test: move tests/test_litellm root and small trees into tests/unit

Pure renames, no content changes. Follow-up commits in this PR fix
references, merge the three files that already existed in tests/unit,
keep live-provider tests in tests/test_litellm and wire CI.

* test: carry tests/test_litellm conftest isolation into tests/unit

Callback lists, routing fallbacks, cached HTTP clients, logger state, AWS,
proxy-URL and keychain env, and session-end client cleanup now reset for
unit tests too. The environment isolation owns its MonkeyPatch so a test's
own monkeypatch is undone before the model-cost teardown runs.

* test: merge, split and prune the moved root and small-tree tests

Merge batches/test_batch_utils.py and the chat_completions and messages
dispatch tests into the files that already existed in tests/unit. Keep
the live Gemini interactions tests, the async image-fetch format test and
the OpenAI embedding scorer test in tests/test_litellm since they need
real network or keys. Put test_router.py under tests/unit/test_router so
the existing package no longer shadows it. Delete eight tests the audit
found superseded by stronger ones kept in this move.

* ci: run the moved root and small-tree tests under their legacy flags

Add the misc and responses-caching-types flags to unit_selection.sh and
CircleCI, extend enterprise-routing and mcp-integration, and point the
legacy GHA shards, Makefile, redis-compat workflow, merge smoke manifest
and change classifier at the new paths.

* test: make the new tests/unit directories packages

tests/unit/test_package_layout.py requires every directory to carry an
__init__.py, and without one the moved and retained
test_litellm_responses_bridge.py modules collide on import.

* test: scope the unit socket block to tests/unit in shared sessions

The GHA shards collect the legacy test-path and the unit selection in one
pytest session. The unit conftest's loopback-only block leaked into legacy
modules that reach the network at import. The legacy conftest now lifts the
restriction at collect and setup time, and the unit conftest re-applies it
when collecting its own modules.

* test: give the shard-script tests their own GITHUB_OUTPUT

They only passed where the runner set it. The CircleCI unit job's env
allowlist drops it, so the script's redirect failed there.

* test: point the router and module-deletion checks at tests/unit

router_code_coverage and code_qa_check_tests only searched tests/test_litellm,
so the moved router tests no longer counted. The two silent-experiment tests
the audit deleted were the only direct callers of those methods; they are
replaced with tests that assert the forwarded shadow request and the
recursion guard.

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
2026-09-25 11:30:43 -07:00

65 lines
2.1 KiB
Python

"""``process_is_gone`` has to say gone for every shape a killed process can take, and never for a live one."""
import os
import signal
import subprocess
import sys
from pathlib import Path
from typing import Final
import pytest
from tests._process_helpers import process_is_gone
SLEEP_FOREVER: Final = (sys.executable, "-I", "-c", "import time; time.sleep(600)")
LEAVE_A_ZOMBIE_BEHIND: Final = """
import os, signal, subprocess, sys, time
grandchild = subprocess.Popen([sys.executable, "-c", "import time; time.sleep(600)"])
os.kill(grandchild.pid, signal.SIGKILL)
while open(f"/proc/{grandchild.pid}/stat").read().rpartition(")")[2].split()[0] != "Z":
time.sleep(0.01)
print(grandchild.pid, flush=True)
time.sleep(600)
"""
def test_a_live_process_is_not_gone() -> None:
child: Final = subprocess.Popen(SLEEP_FOREVER)
try:
assert not process_is_gone(child.pid, within_seconds=0.3)
finally:
child.kill()
child.wait()
def test_a_reaped_child_is_gone() -> None:
child: Final = subprocess.Popen(SLEEP_FOREVER)
child.kill()
child.wait()
assert process_is_gone(child.pid, within_seconds=1)
@pytest.mark.skipif(os.name == "nt", reason="zombies are a POSIX thing")
def test_an_unreaped_child_is_reaped_and_gone() -> None:
child: Final = subprocess.Popen(SLEEP_FOREVER)
os.kill(child.pid, signal.SIGKILL)
assert process_is_gone(child.pid, within_seconds=1)
with pytest.raises(ChildProcessError):
os.waitpid(child.pid, os.WNOHANG)
@pytest.mark.skipif(not Path("/proc").is_dir(), reason="needs procfs to see a zombie that is not our child")
def test_a_zombie_left_by_another_process_is_gone() -> None:
zombie_factory: Final = subprocess.Popen(
[sys.executable, "-I", "-c", LEAVE_A_ZOMBIE_BEHIND], stdout=subprocess.PIPE, text=True
)
try:
assert zombie_factory.stdout is not None
zombie_pid: Final = int(zombie_factory.stdout.readline())
with pytest.raises(ChildProcessError):
os.waitpid(zombie_pid, os.WNOHANG)
assert process_is_gone(zombie_pid, within_seconds=1)
finally:
zombie_factory.kill()
zombie_factory.wait()