Equivalence partitioning is a much more formalized method of test case design. 等价类划分是一个更加形式化的设计测试用例的方法。
Error guessing by an experienced engineer is probably the single most effective method of designing tests, which uncover bugs. 由熟练的工程人员进行错误猜测大概是设计测试唯一最有效发现缺陷的方法。