Regression testing and Re-testing

Regression Testing ensures no new bugs are introduced after changes or fixes. It follows Re-Testing, which verifies the specific bug fix, and often begins after sanity tests confirm the system’s stability.

Regression testing

The purpose of Regression Testing is to ensure that no new bugs have been introduced into the system after changes or fixes.

In fact, when a bug is fixed, Re-Testing is first conducted for the functionality that was fixed, and if everything is fine, Regression Testing starts.

Re-Testing

Verification that the bug has indeed been fixed – comprehensive tests for the functionality that was fixed.

Regression tests are usually performed after sanity tests (quick tests to ensure that the bug has been fixed).

Source: https://qablog.co.il/en/re-testing-and-regression-testing