Treffer: International Journal of Web Services Practices, Vol.2, No.1-2 (2006), pp. 1-10 1 Applying Safe Regression Test Selection Techniques to Java Web Services

—As web services grow in maturity and use, so do the methods being used to test and maintain them. Although regression testing is a major component of most major testing systems, it has only begun to be applied to Web services. The majority of these tools and techniques focus on test case generation, ignoring the potential benefits of regression test selection. Regression test selection (RTS) is a mechanism for reducing the number of tests that must be rerun to ensure some level of confidence. Safe RTS techniques add an additional constraint, namely no modification revealing tests are left unselected. Since Safe RTS techniques involve white-box testing, they cannot be directly applied to Web services. We will propose a mechanism for applying a safe RTS technique to Java-based Web services in an end-to-end manner using a code transformation-based approach. Additionally, we will provide implementation details as well as an example.