RETEST-development of a selective revalidation prototype environment for use in software maintenance

The authors examine problems associated with regression testing, giving particular attention to aspects concerning selective revalidation. They describe a prototype retesting environment called RETEST that will allow maintenance personnel to cope with revalidation procedures. It is noted that large amounts of time and computational resources are expended for revalidation and that the maintainers´ view of this topic often lacks a sensible and systematic approach