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Retesting vs Regression Testing

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Category: Software Testing @ OneStopTesting
Forum Name: Beginners @ OneStopTesting
Forum Discription: New to the Club...!!! Don't Worry, We are here for you...!!! Learn the very basics of Software Testing and other pertinent Informations.
URL: http://forum.onestoptesting.com/forum_posts.asp?TID=4503
Printed Date: 05Sep2025 at 4:21am


Topic: Retesting vs Regression Testing
Posted By: getsourav
Subject: Retesting vs Regression Testing
Date Posted: 05Feb2008 at 11:48pm
Dear All,

Will you pls tell me the difference between Retesting vs Regression Testing?

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Sourav


Replies:
Posted By: varunsen
Date Posted: 07Jun2008 at 12:47am
Hi,

1. Retesting involves the check for the functionality of the previous and the present
 build is stable or not,
incase of Regression testing is checking for  the newly added functionality causing any errors in terms of functionality and the
common functionality should be stable in the latest and the previous versions

2. Regression testing is done to verify wheather the bugs has been fixed after review of not,

Retesting is done to check the functionality of the application with newer version or release no. .,

3. Retesting and Regression Testing are slightly different in the sense....they are to be executed on different test cases...
E.g. If there are 1000 test cases to be executed in the first build....And of the 1000 test cases, 100 fail and 900 pass....
Then after bug fixes and when the 2nd build is received, REGRESSION Testing has to be done on the 900 test cases and the remaining 100 test cases are to be RETESTED.

4. When a bug is found, it needs to be communicated and assigned to developers that
can fix it. After the problem is resolved, fixes should be re-tested with the same test data.

Additionally,determinations should be made regarding requirements, software, hardware, safety
impact, etc. to make sure the application works as expected.

Testing the application once the bug is fixed with new test data to check the fixes didn't create other problems
elsewhere.

Rgds,
Varun

Posted By: sairevathi
Date Posted: 25Sep2008 at 10:13pm
Retesting allways done second time
Regression Testing allways done only one time

Posted By: tossy
Date Posted: 26Sep2008 at 3:23am 
RETESTING: Testing the application with multiple sets of 
test data is Retesting.

REGRESSION TESTING: Test the bug fixes r working properly 
as the specification and test, by fixing these bug any 
other feature may get impacted (conduct impact analysis) is 
regression testing.


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