python network_error ai_generated true

requests.exceptions.ConnectionError: HTTPSConnectionPool(host='api.example.com', port=443): 超过最大重试次数，URL: /v1/items（由 NewConnectionError(...) 引起）

requests.exceptions.ConnectionError: HTTPSConnectionPool(host='api.example.com', port=443): Max retries exceeded with url: /v1/items (Caused by NewConnectionError(...))

ID: python/pytest-requests-mock-adapter-not-active

其他格式: JSON · Markdown 中文 · English
80%修复率
85%置信度
0证据数
2024-10-22首次发现

版本兼容性

版本状态引入弃用备注
1.11.x active — — —
1.12.x active — — —

根因分析

requests_mock.Mocker 作为上下文管理器使用，但被测客户端创建了自己的 Session（或直接使用 requests.Session()），并非挂载了适配器的那个 session。

English

requests_mock.Mocker was used as a context manager but the client under test creates its own Session (or uses requests.Session() directly), which is not the session the adapter was mounted on.

generic

解决方案

  1. 94% 成功率 
    import requests, requests_mock

def test_fetch():
    session = requests.Session()
    with requests_mock.Mocker(session=session) as m:
        m.get('https://api.example.com/v1/items', json=[])
        client = MyClient(session=session)
        assert client.fetch_items() == []
  2. 92% 成功率 
    @pytest.fixture
def mocked_session():
    s = requests.Session()
    with requests_mock.Mocker(session=s) as m:
        yield s, m

def test_x(mocked_session):
    s, m = mocked_session
    m.get('https://api.example.com/v1/items', json=[])
    assert MyClient(session=s).fetch_items() == []

无效尝试

常见但无效的做法:

  1. 85% 失败

    Module-level mocker still only patches the default session; code that instantiates its own Session bypasses it.

  2. 90% 失败

    Falls back to the real network, which is exactly what CI cannot access; the ConnectionError persists.