python config_error ai_generated true

ERROR: file or directory not found: tests/conftest.py no tests ran in 0.001s

ID: python/pytest-conftest-not-collected

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80%Fix Rate
88%Confidence
0Evidence
2024-01-08First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
7.x active — — —
8.x active — — —

Root Cause

conftest.py is a configuration file, not a test module; pytest does not collect tests from it. Passing it explicitly on the command line produces this error.

generic

中文

conftest.py 是配置文件而非测试模块；pytest 不从其中收集测试。显式在命令行传入它会产生此错误。

Workarounds

  1. 97% success 
    Run the test directory or a specific test, not conftest.py:
pytest tests/
# or
pytest tests/test_api.py::test_health
  2. 85% success 
    If you want to test fixture logic, move helpers to a module and import them:
# tests/helpers.py
def make_client(): ...
# tests/test_helpers.py
from tests.helpers import make_client

Dead Ends

Common approaches that don't work:

  1. 90% fail

    Fixtures defined there are no longer auto-discovered by sibling tests; they break.

  2. 85% fail

    pytest still ignores tests in conftest.py; behavior is undefined and confusing.