python config_error ai_generated true

FAIL 未达到 90% 的测试覆盖率要求。总覆盖率：84.32% ERROR: 覆盖率失败：总计 84.32 低于 fail-under=90.00

FAIL Required test coverage of 90% not reached. Total coverage: 84.32% ERROR: Coverage failure: total of 84.32 is less than fail-under=90.00

ID: python/pytest-cov-fail-under-mismatch

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80%修复率
89%置信度
0证据数
2024-12-04首次发现

版本兼容性

版本状态引入弃用备注
5.0 active — — —

根因分析

pytest-cov 的 --cov-fail-under 阈值高于实际测量的覆盖率。通常发生在添加了没有测试的新代码时，或者 --cov 中的源路径配置错误导致某些模块显示为 0%。

English

pytest-cov's --cov-fail-under threshold is higher than the actual measured coverage. Common when new code was added without tests, or when source paths in --cov are misconfigured so some modules show as 0%.

generic

解决方案

  1. 95% 成功率 
    pytest --cov=src --cov-report=term-missing --cov-fail-under=0
# then write tests for the missing lines, or:
pytest --cov=src --cov-report=html
open htmlcov/index.html
  2. 90% 成功率 
    pytest --cov=src --cov-fail-under=90 \
  --cov-config=.coveragerc

# .coveragerc
[run]
omit =
    */migrations/*
    */tests/*
    */conftest.py

无效尝试

常见但无效的做法:

  1. 75% 失败

    Treats the symptom; coverage continues to drift downward and the team loses the safety net.

  2. 80% 失败

    Excludes code from measurement instead of testing it; reviewers reject the PR and real bugs ship untested.