An Efficient Analysis on Test Case Prioritization Techniques for Regression Testing

Regression testing is a testing activity that is performed to provide confidence that changes do not harm the existing behavior of the software. Regression testing is an expensive process used to validate modified software. Test case prioritization techniques give better cost effectiveness of regression testing. In the testing process those that are important run earlier. Many prioritization techniques have been proposed and evidence shows that they can be beneficial. Most of the studies performed have evaluated regression testing under the limited context, such as short-term assessment, which do not fully account for system evolution or industry circumstances. We have associated with residual defects. The residual defects might affect the level of success of the software products. In this paper, we give a study on heuristic approach and Bayesian network approach. This shows how they are effective in reducing the occurrence and persistence of residual defects across the system lifetime.