James O Coplien のWhy Most Unit Testing is wasteより 最後のまとめを和訳 ツッコミ大歓迎。 Keep regression tests around for up to a year — but most of those will be system-level tests rather than unit tests. 回帰テストを一年間続けよう。ただしテストのほとんどは単体テストではなくシステムテストになる Keep unit tests that test key algorithms for which there is a broad, formal, independent oracle of correctness, and for which there is ascribable business value. ビジネス価値