python runtime_error ai_generated true

Failed: DID NOT RAISE <class 'ValueError'>

ID: python/pytest-raises-missed-exception

Also available as: JSON · Markdown · 中文
80%Fix Rate
85%Confidence
0Evidence
2025-07-05First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.8 active — — —
3.9 active — — —
3.10 active — — —
3.11 active — — —
3.12 active — — —

Root Cause

A test using pytest.raises(ValueError) expects an exception to be raised, but the code executes without raising it.

generic

中文

使用 pytest.raises(ValueError) 的测试期望引发异常，但代码执行时没有引发。

Workarounds

  1. 90% success 
    Check the code logic to ensure it raises ValueError under the given conditions, and fix if necessary.
  2. 85% success 
    Add debug prints to verify the input that should trigger the exception.

Dead Ends

Common approaches that don't work:

  1. 95% fail

    This defeats the purpose of the test; it should validate real error conditions.

  2. 80% fail

    This can mask other unexpected exceptions and reduce test effectiveness.