Mutation Score - CI/CD用語集の定義
Mutation scoreは、意図的に導入されたコードの欠陥（mutant）のうち、テストスイートが検出（kill）する割合です。実行のみを測定するカバレッジとは異なり、テストがバグを捉えるうえでどれだけ効果的かを測定します。
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