python runtime_error ai_generated true

AssertionError: <class 'ValueError'> 未引发

AssertionError: <class 'ValueError'> not raised

ID: python/unittest-assertraises-wrong-exception

其他格式: JSON · Markdown 中文 · English
80%修复率
89%置信度
0证据数
2024-01-30首次发现

版本兼容性

版本状态引入弃用备注
3.x active — — —

根因分析

被测代码未引发预期的异常。这可能是因为代码路径未触发、异常类型不同，或代码静默处理了错误。

English

The code under test did not raise the expected exception. This could be because the code path was not triggered, the exception type is different, or the code silently handles the error.

generic

解决方案

  1. 92% 成功率 
    with self.assertRaises(ValueError) as cm:
    my_function(invalid_input)
self.assertEqual(str(cm.exception), 'expected message')
  2. 95% 成功率 
    import pytest

with pytest.raises(ValueError, match='expected message'):
    my_function(invalid_input)

无效尝试

常见但无效的做法:

  1. 80% 失败

    This broadens the assertion and may pass even when the wrong exception is raised, hiding bugs.

  2. 85% 失败

    This bypasses assertRaises entirely and does not verify the exception type correctly.