Regression testing is software testing used to verify that changes made to a software system or application do not introduce new bugs or issues and that the existing functionality is still working correctly. It is a process of retesting the software after changes have been made to ensure that the changes have not affected the existing functionality.
Regression testing is typically performed after new features have been added or changes have been made to the software, such as bug fixes or updates. It is also performed after a new software version has been released. Regression testing aims to identify and prevent regressions, which are errors or issues not present in the original version of the software.
Types of regression testing, such as:
Full regression testing: This testing involves retesting the entire software system after changes have been made.
Partial regression testing: This type of testing involves retesting only the parts of the software system that have been affected by the changes.
Incremental regression testing: This type of testing involves retesting only the parts of the software system that have been changed since the last testing iteration.
Regression testing is an important step in the software development process as it helps to ensure that changes made to the software do not affect the existing functionality and that the software remains stable and reliable. It is also performed to ensure that the existing functionalities are not altered after new features are added.
Also, See: Quality Assurance (QA)