python runtime_error ai_generated true

FAILED tests/test_network.py::test_connect - pytest.PytestUnraisableExceptionWarning: 忽略的异常：<socket.socket fd=5> ResourceWarning: 未关闭的 <socket.socket fd=5, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('127.0.0.1', 54321), raddr=('127.0.0.1', 8080)>

FAILED tests/test_network.py::test_connect - pytest.PytestUnraisableExceptionWarning: Exception ignored in: <socket.socket fd=5> ResourceWarning: unclosed <socket.socket fd=5, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('127.0.0.1', 54321), raddr=('127.0.0.1', 8080)>

ID: python/pytest-warnings-as-errors-unclosed-socket

其他格式: JSON · Markdown 中文 · English

80%修复率

85%置信度

0证据数

2024-07-03首次发现

版本兼容性

版本	状态	引入	弃用	备注
7.x	active	—	—	—
8.x	active	—	—	—

根因分析

pytest 配置了 filterwarnings = error，因此未关闭的 socket（例如 fixture 或测试中未关闭的连接）产生的 ResourceWarning 被提升为错误并导致测试失败。

English

pytest is configured with filterwarnings = error, so ResourceWarning from an unclosed socket (e.g., a connection not closed in a fixture or test) is promoted to an error and fails the test.

generic

解决方案

95% 成功率

import socket
import pytest

@pytest.fixture
def conn():
    s = socket.create_connection(('127.0.0.1', 8080))
    yield s
    s.close()

def test_connect(conn):
    ...

90% 成功率

from contextlib import closing

def test_connect():
    with closing(socket.create_connection(('127.0.0.1', 8080))) as s:
        ...

无效尝试

常见但无效的做法:

70% 失败
Hides real resource leaks in production code and can mask other warnings-as-errors that you do want to catch.
65% 失败
gc.collect() may run before the socket's __del__ or may not close the socket deterministically; the warning can still fire during interpreter shutdown.