Equivalence partitioning is a much more formalized method of test case design. 等價類劃分是一個更加形式化的設計測試用例的方法。
Error guessing by an experienced engineer is probably the single most effective method of designing tests, which uncover bugs. 由熟練的工程人員進行錯誤猜測大概是設計測試唯一最有效發現缺陷的方法。