Difference between regression and retesting ?

Question

Accepted Answer

Regression testing is testing the entire system after making changes, while retesting is testing only the failed test cases.

Regression testing ensures that changes made to the system do not affect the existing functionality.
Retesting is done to ensure that the defects found in the previous cycle have been fixed.
Regression testing is done after every change, while retesting is done after a defect is fixed.
Regression testing is time-consuming, while retesting is relatively faster.
Example: After adding a new feature to a software, regression testing is done to ensure that the existing features are not affected. If a defect is found in the new feature, retesting is done after fixing the defect.

Accepted Answer

Regression testing is that new code changes should not have any side effects to existing functionalities and defect verification is not the part of regression testing it is besed on the project and availability of resources regression testing can be carried out parallel with retesting

Re testing is done on the basic of the defect fixes defect verification is part of retesting it is priority of re testing is higher then regression testing ,so it is carried out before regression testing

Accepted Answer

Regression is done after each build whereas retesting is done after a bug has been fixed.

In Regression, we test all the functionalities of the application to see if everything is working fine/as expected after the build is deployed. This makes sure that no portion is broken due to the build. Whereas, in retesting we run the test cases that are related only to the bug that was found.

Difference between regression and retesting ?

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