What is the difference between Retesting and Regression Testing?
ReTesting : is testing the functionality which is already tested.
eg;- We test "Book Withdrawal Functionality of Library". if Tester finds a defect in the functionality he will raise a defect. Once the developers fixes the issue. Tester is Retesting the same functionality.
Regression Testing : When any changes occur in the existing system Tester tests the new functionality and also tests how the new changes are getting effected with the already existing functionality.
eg:- If the Withdrawal functionality of the Library system is updated to support withdrawal for outside users.
Here Tester is testing working of withdrawal functionality of Out Side users and also Testing existing User to validate already existing functionality are working as required.
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