python config_error ai_generated true

Ran 0 tests in 0.000s NO TESTS RAN

ID: python/unittest-testcase-no-tests-ran

Also available as: JSON · Markdown · 中文
80%Fix Rate
87%Confidence
0Evidence
2024-05-19First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.8 active — — —
3.12 active — — —

Root Cause

unittest discovers zero tests because test methods do not start with 'test', the TestCase subclass name does not start with 'Test', or discovery was pointed at the wrong directory/pattern.

generic

中文

unittest 发现零个测试，因为测试方法不以 'test' 开头、TestCase 子类名不以 'Test' 开头，或发现路径/模式指向了错误的目录。

Workarounds

  1. 95% success 
    import unittest

class TestMath(unittest.TestCase):
    def test_add(self):
        self.assertEqual(1 + 1, 2)

if __name__ == '__main__':
    unittest.main()
  2. 90% success 
    python -m unittest discover -s tests -p 'test_*.py' -v

Dead Ends

Common approaches that don't work:

  1. 70% fail

    More verbose output still reports zero tests; the naming problem is unchanged.

  2. 60% fail

    File naming is necessary but not sufficient; methods must also start with 'test'.