Change-Related Testing – Software Testing
Testing a system following modifications or corrections; includes retesting and regression testing. This is testing following a change or fixes to the software or environment. This should involve two types of tests:
It is retesting or confirmation testing, which reruns test cases that previously failed to verify the success of corrective actions.
Regression testing of a previously tested program following modification ensures that defects have not been introduced or uncovered in unchanged areas of the software due to the changes made. An estimated 20% to 50% of changes introduce new defects.
It may be performed at all test levels and types, including functional, non-functional and structural testing. Regression should occur at all testing stages after a functional improvement or repair.
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Retesting and regression should be repeatable, so they can be rerun every time there is a change or fix.
It’s essential to automate both retesting and regression tests.
Automation is not a full substitute for manual testing as not 100% automation testing can be achieved and it shouldn’t.
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