Interview Questions

What's Regression testing

Software Testing Methodolog

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What's Regression testing

Did a new build break an existing function? Repeat testing after changes for managing risk relate to product enhancement.

A regression test is performded when the tester wishes to see the progress of the testing processs by performing identical tests before and after a bug has been fixed. A regression test allows the tester to compare expeted test results with the actual results.

Regression testing's primary objective is to ensure that all bugfree features stay that way. In addition, bugs which have been fixed once should not turn up again in subsequent program versions.

Regression testing: After every software modification or before next release, we repeat all test cases to check if fixed bugs are not show up again and new and existing functions are all working correctly.

Regression testing is used to confirm that fixed bugs have, in fact, been fixed and that new bugs have not been introduced in the process, and that festures that were proven correctly functional are intact. Depending on the size of a project, cycles of regression testing may be perform once per milestone or once per build. Some bug regression testing may also be performed during each accceptance test cycle, forcusing on only the most important bugs. Regression tests can be automated.

CONDITIONS DURING WHICH REGRESSION TESTS MAY BE RUN Issu fixing cycle. Once the development team has fixed issues, a regression test can be run t ovalidate the fixes. Tests are based on the step-by-step test casess that were originally reported:

  • If an issue is confirmeded as fixed, then the issue report status should be changed to Closed.
  • If an issue is confirmed as fixed, but with side effects, then the issue report status should be changed to Closed. However, a new issue should be filed to report the side effect.
  • If an issue is only partially fixed, then the issue report resolution should be changed back to Unfixed, along with comments outlining the oustanding problems

Open-status regression cycle. Periodic regression tests may be run on all open issue in the issue-tracking database. During this cycle, issue status is confirmed either the report is reproducible as is with no modification, the report is reproducible with additional comments or modifications, or the report is no longer reproducible

Closed-fixed regression cycle. In the final phase of testing, a full-regression test cycle should be run to confirm the status of all fixed-closed issues.

Feature regression cycle. Each time a new build is cut or is in the final phase of testing depending on the organizational procedure, a full-regression test cycle should be run to confirm that the proven correctly functional features are still working as expected.

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