Differences between Retesting and Regression Testing?
Overview
Learn the differences between Resting and Regression testing. Let’s define both testing types.
Retesting
Retesting is testing a specific defect or issue that was identified in an earlier test cycle. The goal of retesting is to ensure that the reported defect has been fixed properly and no longer exists in the software.
Regression Testing
Regression testing is testing that focuses on ensuring that new code changes, bug fixes, or enhancements do not adversely affect the existing functionality of the software. It aims to catch any unintended side effects or new defects that might have been introduced as a result of recent changes.
Differences
Some of the differences between Retesting and Regression testing are as follows:
Re-TestingĀ | Regression Testing |
Retesting is done to ensure that the single defect is fixed and no longer exists in the fixed QA build. The tester executes the failed test case to ensure that it passed | Regression testing is done to ensure that changes like new features, enhancements, and bug fixes do not affect the whole application. The main aim is to catch unintended side effects or new defects. Regression testing is not limited to a specific defect; it covers the entire software application |
Retesting is carried out by testers who reported the initial defect. | Regression testing is carried out as a planned test effort for each QA build by the entire test team. |
The purpose of Retesting is to verify the bug fix and confirm that the defect is indeed resolved | The purpose of Regression testing is to catch regression bugs. New defects or side effects are introduced when new code is added or modified. |
The retesting testing effort is small. | Regression testing effort is large scale. |
Retesting is prioritized over Regression testing. Defects that are fixed are tested out before regression testing. | Regression testing is usually done after retesting of the defects are tested. |