python config_error ai_generated true

覆盖率失败：总计 78.42 低于 fail-under=80.00

Coverage failure: total of 78.42 is less than fail-under=80.00

ID: python/pytest-coverage-threshold-fail

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80%修复率
86%置信度
0证据数
2025-03-19首次发现

版本兼容性

版本状态引入弃用备注
5.0.x active — — —
6.0.x active — — —

根因分析

pytest-cov 的 --cov-fail-under 强制最低覆盖率；测得的总覆盖率低于配置阈值，即使所有测试通过也会失败。

English

pytest-cov's --cov-fail-under enforces a minimum coverage; the measured total is below the configured threshold, failing the run even if all tests pass.

generic

解决方案

  1. 90% 成功率 
    # pyproject.toml
[tool.coverage.run]
source = ["myapp"]
omit = ["myapp/migrations/*", "*/tests/*"]

[tool.coverage.report]
fail_under = 80
show_missing = true
  2. 92% 成功率 
    pytest --cov=myapp --cov-report=term-missing --cov-fail-under=80
# Focus on 'Missing' column to add tests

无效尝试

常见但无效的做法:

  1. 80% 失败

    Hides untested code and defeats the purpose of the gate; reviewers reject blanket pragma usage.

  2. 85% 失败

    Removes the gate entirely; regressions slip through and the metric becomes meaningless.