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What is Regression Testing

Regression testing – If we talk about testing process than in this case we have so many methodologies and one of them is “https://www.dselva.co.in/blog/what-is-regression-testing/Regression Testing” which is aimed to validate how newly modified code or if new functionality is added meets the specified requirements and it ensure us that existing code has not been affected by changes made.

Why we do regression testing?

Through regression testing we can be confirmed that the functionality which were running correctly before any code changes is still running correctly and does not have any impact . So doing regression testing is one of the main part of our testing process which is needed to be done on every level i.e. whether any code is been changed or any new functionality is added. It requires always regression testing to be done. It needs to be done when:–
1. When new features being introduced.
2. When defects being fixed.
3. When change in requirements where an existing feature was modified.

What is the value of Software regression testing:-

Regression testing gives us the confidence that if there would be any changes in existing functionality than it did not break what was already there. Its often saves time and money by finding the defects and fixing them as soon as possible.

How we can do regression testing:-

In generally we don’t create new test cases at the time of It but whatever test cases we have been made , we run those test cases again and again when required, but retesting the full system and its all test cases can be expensive and might be time consuming. So because of cost and time involved in our process it is important to select the right test cases to run for it. Some major areas of the application can be tested during it majorly:-
1. An area of application that has frequent defects or bug.
2. Main features
3. The application area which have high complex functionality.
4. Area which have undergone for recent changes.
5. Critical integration



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