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Chapter: Software Testing : Levels of Testing

Regression testing

Regression testing is not a level of testing, but it is the retesting of software that occurs when changes are made to ensure that the new version of the software has retained the capabilities of the old version and that no new defects have been introduced due to the changes.

Regression testing

Regression testing is not a level of testing, but it is the retesting of software that occurs when changes are made to ensure that the new version of the software has retained the capabilities of the old version and that no new defects have been introduced due to the changes. Regression testing can occur at any level of test, for example, when unit tests are run the unit may pass a number of these tests until one of the tests does reveal a defect. The unit is repaired and then retested with all the old test cases to ensure that the changes have not affected its functionality. Regression tests are especially important when multiple software releases are developed. Users want new capabilities in the latest releases, but still expect the older capabilities to remain in place. This is where regression testing plays a role. Test cases, test procedures, and other test - related items from previous releases should be available so that these tests can be run with the new versions of the software. Automated testing tools support testers with this very time-consuming task.


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Software Testing : Levels of Testing : Regression testing |


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