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archived-MoviePilot/app/testing/network_guard.py

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"""测试网络守卫(主程序与插件仓共享)。
提供一个 autouse 的 pytest fixture拦截测试期对非本地主机的真实出站网络。主程序
``tests/conftest.py`` 与各插件仓 conftest 只需 ``from app.testing.network_guard import
block_real_network`` 即复用同一道守卫——pytest 会把 conftest 命名空间内(含 import 进来的)
fixture 一并识别autouse 自动作用于每个用例,无需逐用例改动。
仅供测试使用,不参与运行时逻辑。
"""
from __future__ import annotations
import pytest
# 本地回环/通配地址放行其余主机一律视为真实出站getaddrinfo 的 host 可能为 str 或 bytes
_ALLOWED_NETWORK_HOSTS = {"127.0.0.1", "::1", "localhost", "0.0.0.0", "::", ""}
@pytest.fixture(autouse=True)
def block_real_network(monkeypatch):
"""防御纵深:拦截对非本地主机的真实出站,强制测试零真实网络。
补在各用例自身 mock 之上:某用例万一漏 mock 外部依赖TMDB / LLM 目录 / 下载器 /
媒体服务器 / 任意外链),其真实 DNS 解析会在此被拦并报错,而非静默发请求。本地回环放行
sqlite 等。asyncio 默认解析器经线程池调用 ``socket.getaddrinfo``,故拦此一处即覆盖
同步与异步出站。``monkeypatch`` 在用例结束后自动还原,不影响其他用例与进程退出。
"""
import socket
_real_getaddrinfo = socket.getaddrinfo
def _guarded_getaddrinfo(host, *args, **kwargs):
normalized = host.decode() if isinstance(host, (bytes, bytearray)) else host
if normalized is not None and normalized not in _ALLOWED_NETWORK_HOSTS:
raise RuntimeError(
f"测试禁止真实出站网络:尝试解析 {normalized!r};请 mock 对应外部依赖"
)
return _real_getaddrinfo(host, *args, **kwargs)
monkeypatch.setattr(socket, "getaddrinfo", _guarded_getaddrinfo)
yield