以下关于边界值分析法的叙述中,不正确的是( )。
- A.大量错误发生在输入或输出的边界取值上
- B.边界值分析法是在决策表法基础上进行的
- C.需要考虑程序的内部边界条件
- D.需要同时考虑输入条件和输出条件
正确答案及解析
正确答案
解析
边界值分析是一种补充等价划分的测试用例设计技术,它不是选择等价类的任意元素,而是选择等价类边界的测试用例。实践证明,为检验边界附近的处理专门设计测试用例,常常取得良好的测试效果。边界值分析法不仅重视输入条件边界,而且也适用于输出域测试用例。人们长期的测试工作经验得知:大量的错误是发生在输入或输出范围的边界上的,而不是在输入范围的内部。如果程序中使用了一个内部数据结构,则应当选择这个内部数据结构边界上的值作为测试用例。因此针对各种边界情况设计测试用例,可以查出更多地错误。
选项B描述错误。
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