Below are the differences between Regression Testing and Retesting.
a) Retesting is carried out to verify defect fix / fixes. Regression testing is done to check if the defect fix / fixes have not impacted other functionality of the application that was working fine before applying the code changes.
b) Retesting is planned based for the defect fixes listed in Build Notes. Regression testing is generic and may not be always specific to any defect fix or code change and can be planned as regional or full regression testing.
c) Retesting involves executing test cases that were failed earlier and regression testing involves executing test cases that were passed earlier build i.e., functionality that was working in earlier builds.
d) Retesting will involve rerunning failed test cases that are associated with defect(s) fixes being verified. Regression testing does not involve verifying defect fix but only executing regression test cases.
e) Retesting always takes higher priority over Regression testing i.e., Regression testing is done after completing Retesting. In some projects where there are ample testing resources, Regression testing is carried out in parallel with retesting.
f) Though Retesting and regression testing have different objectives and priorities, they equally important for project’s success.
Thanks for the post on this mostly used topic. In my opinion:
ReplyDeleteRegression Testing is the execution of all or a select set of test cases which have passed on the previous build or release of the application under test in order to validate that the original features and functions are still working as they were previously. These tests normally will not have already been executed against the current build or release as normally only the new features and functions are tested prior to regression testing.
Retesting is the execution of one or a set of test cases which previously failed due to a suspected defect in the software which now is documented as being remedied.
Source: What is the difference between Regression Testing vs Retest?
Re-testing:testing the fixed bug is working or not.
DeleteRegression testing:testing the fixed bug and impact area is called regression testing.
Retesting: To test the application whether the bug is fixed or not.
ReplyDeleteRegression testing:After fixing the bug, which cause any side effect or not.