python config_error ai_generated true

Ran 0 tests in 0.000s NO TESTS RAN FAILED (errors=0)

ID: python/unittest-no-tests-ran

Also available as: JSON · Markdown · 中文
80%Fix Rate
86%Confidence
0Evidence
2024-02-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.10 active — — —
3.12 active — — —

Root Cause

unittest discovery found no test methods because the class does not subclass unittest.TestCase, method names do not start with `test`, or the module is not named `test*.py` / the start directory is wrong.

generic

中文

unittest 发现机制没有找到任何测试方法，因为类没有继承 unittest.TestCase、方法名不以 `test` 开头，或模块没有命名为 `test*.py` / 起始目录不正确。

Workarounds

  1. 95% success 
    Ensure the class inherits TestCase and methods start with test:
import unittest
class TestMath(unittest.TestCase):
    def test_add(self):
        self.assertEqual(1+1, 2)
  2. 90% success 
    Point discovery at the right start dir and pattern:
python -m unittest discover -s tests -p 'test_*.py' -v

Dead Ends

Common approaches that don't work:

  1. 80% fail

    Default discovery pattern is `test*.py`; `tests.py` does not match, so still 0 tests.

  2. 75% fail

    Running via `python -m unittest discover` ignores that block; discovery still finds nothing.