Regression testing is a black box testing technique that consists of re-executing those tests that are impacted by the code changes. These tests should be executed as often as possible throughout the software development life cycle
Regression testing is a type of software testing that ensures that previously developed and tested software still performs the same way after it is changed or interfaced with other software. Changes may include software enhancements, patches, configuration changes, etc. During regression testing, new software bugs or regressions may be uncovered. Sometimes a software change-impact analysis is performed to determine which areas could be affected by the proposed changes. These areas may include functional and non-functional areas of the system.
The purpose of regression testing is to ensure that changes such as those mentioned above have not introduced new faults. One of the main reasons for regression testing is to determine whether a change in one part of the software affects other parts of the software.
Types of Regression Tests:
- Final Regression Tests: – A “final regression testing” is performed to validate the build that hasn’t changed for a period of time. This build is deployed or shipped to customers.
- Regression Tests: – A normal regression testing is performed to verify if the build has NOT broken any other parts of the application by the recent code changes for defect fixing or for enhancement.
