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软件测试笔记备份 #34
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组合测试用例
测试覆盖项的理论数目 假设有n个参数,每个参数记为Ri,采用成对测试,理论上测试覆盖项个数为: P D M R 所有的两两组合相乘(PD+PD+PR+DM+DR+MR),然后相加。(打印机的例子) 测试用例最大1:1取,即36条,覆盖100%,那么最少需要取多少才能覆盖? 最少的话,Max(Ri x Rj) 即4x2 = 8 |
逐个选择测试 |
基本选择测试 |
### 成对测试 |
因果图方法 主要是描述事物的结果与其相关原因之间的关系,广泛用于各个行业的质量管理领域。 用来分析输入输出关系 为什么要用? 避免漏掉某种情况,没有进行完全测试 |
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课程:
考察方式:重点考察思想,因为技术工具会变,但是思想不会变
等价类划分
测试覆盖率计算公式 Cov = (N/T * 100)%
T为测试覆盖项的总数,N为测试用例。
是主观概念还是客观概念?
因为T是主观选定的,所以具有很强的主观性;但是同时又是客观的。
是否越高越好?
在T选定的情况下,越高越好。
笔记定义:
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