python network_error ai_generated true

httpx.ConnectError: 所有连接尝试均失败 在处理上述异常时，又发生了一个异常: httpx.HTTPStatusError: 客户端错误 '404 Not Found'，URL 为 'https://api.example.com/v1/users'

httpx.ConnectError: All connection attempts failed During handling of the above exception, another exception occurred: httpx.HTTPStatusError: Client error '404 Not Found' for url 'https://api.example.com/v1/users'

ID: python/pytest-httpx-mock-not-matched

其他格式: JSON · Markdown 中文 · English
80%修复率
84%置信度
0证据数
2025-01-15首次发现

版本兼容性

版本状态引入弃用备注
0.21.x active — — —
0.22.x active — — —

根因分析

respx/httpx mock 注册的 URL 模式与实际请求不匹配（尾部斜杠、查询字符串或 http 与 https），导致请求穿透到真实网络。

English

respx/httpx mock was registered with a URL pattern that does not match the actual request (trailing slash, query string, or http vs https), so the request falls through to the real network.

generic

解决方案

  1. 93% 成功率 
    import respx, httpx

@respx.mock
async def test_users():
    respx.get(url__regex=r'/v1/users.*').mock(
        return_value=httpx.Response(200, json={'id': 1})
    )
    async with httpx.AsyncClient(base_url='https://api.example.com') as c:
        r = await c.get('/v1/users')
        assert r.status_code == 200
  2. 88% 成功率 
    respx.get('https://api.example.com/v1/users').mock(...)
# Enable debug:
import logging
logging.basicConfig(level=logging.DEBUG)
# Look for 'No mock matched' in output

无效尝试

常见但无效的做法:

  1. 85% 失败

    Disabling assertions hides the mismatch but the request still goes to the real network and fails with ConnectError.

  2. 90% 失败

    The failure is not a timeout; the URL never matches a registered route so no mock intercepts it.