Software with a minimum number of bugs attracts a huge audience. The primary motive of software development is to ensure that the software meets the needs of the people. Therefore, testing becomes a crucial part of software development. Retesting and regression testing are the procedures that go hand in hand while testing hence these terms are often confused. In this post, we will discuss some of the main differences between retesting and regression testing.

What is Retesting?

Retesting is a process to review specific test cases where a bug or bugs were found during the final execution. These issues are typically discovered by testers as they test a software program, and they are then given to the programmers to remedy. The developers then correct the bug or bugs and provide it back to the testers for validation. Retesting is the name of this ongoing activity.

What is Regression Testing?

Software testing techniques like regression testing are used to make sure that changes to the environment or the software haven’t had any unanticipated negative side effects. Regression testing is used to make sure that newly introduced software updates or features don’t conflict with any already issued updates or features.

Key Differences Between Retesting and Regression Testing

• Regression testing is used to make sure that recent program or code modifications haven’t negatively impacted already-existing features while re-testing is used to make sure that test cases that failed during final execution are now passing once the bugs have been repaired.

• Regression testing is done to ensure that new code changes won’t affect any current functionality, while retesting is done in response to defect remedies.

• The functionality of the previous version is not the main focus of retesting. Regression testing, on the other hand, is change-oriented and mainly checks whether the functionality of the previous versions is preserved after a change/update to the software. It instead seeks to see if functionality has been restored after a bug patch.

• Retesting is not a required step in the procedure for testing unless a bug is discovered and fixed; as a result, it is not a given. In contrast, regression testing is the standard and is always included in the testing process. Regression testing should be done each time the application’s code is modified.

• Regression testing and retesting can be done in parallel depending on the project and the available resources, but re-testing is prioritized higher than regression testing, thus it is done first.

• Retesting is given a higher priority because it concentrates on correcting known flaws. Since regression testing only performs a general sweep of the application to look for possibly unforeseen flaws; it has a lower priority than retesting.

Final Thoughts

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