基于OTT策略的可变力度组合测试用例优先级排序方法

A Method Based OTT Strategy of Variable Strength Combinatorial Test Case Prioritization

摘要:

如何选取组合力度用于测试是可变力度组合测试用例优先级排序方法中迫于解决的关键问题。采用组合覆盖率为排序标准能够满足组合覆盖率,但其排序因素单一,测试用例优先级排序结果差异性较大,且无法根据测试结果反馈信息及时调整组合测试用例优先级。针对上述问题,该文结合One-test-at-a-time(OTT)策略、利用局部组合覆盖率、测试用例失效率和测试用例重要程度对组合测试用例优先级排序方法进行了研究。在测试过程中,实时关注测试用例的执行结果用于在线调整测试用例排序因素的取值情况,以达到实时更新组合测试用例优先级的目的。实验结果表明：相较于Random、ICBP、GISVSP和LISVSP方法,该方法使得组合测试用例优先级排序结果相对稳定,且在缺陷检测率上具有竞争力。

Abstract:

How to choose combinatorial strength for testing is a key problem that is urgently solved in the prioritized methodologies of variable strength combinatorial test cases. The combined coverage ratio can meet the combination coverage criteria, but the ranking factor is single, the test case prioritization results are quite different, and the priority of the combined test cases can’t be adjusted timely according to the feedback information of the test results. In order to solve the above problems, this paper studies the prioritization method of combinatorial test cases based on One-test-at-a-time (OTT) strategy, using locally-interaction-coverage rate, test case failure rate and test case importance. In the testing process, the execution result is used to adjust the value of the sequencing factor achieve the purpose of updating the priority of the combined test case in real time. Experimental results show that compared with Random, ICBP, GISVSP and LISVSP methods, this method makes the prioritization results more stable, and the defect detection rate is competitive.