Foundations of Software Testing (Fundamental Algorithms and Techniques) by Pearson

Basics of Software Testing

Often a carefully selected set of customers is asked to test a system

before commercialization. This form of testing is referred to as beta-

testing. In the case of contract software, the customer who contracted

the development performs acceptability testing prior to making the final

decision as to whether to purchase the application for deployment.

Errors reported by users of an application often lead to additional

testing and debugging. Often changes made to an application are much

smaller in their size when compared to the entire application, thus ob-

viating the need for a complete system test. In such situations, one per-

forms a regression test. The goal of regression testing is to ensure that

the modified system functions ...