Explanation of Regression Testing and Retesting in Software Testing

Regression testing and retesting are both important aspects of software testing that help ensure the quality of a software product. Here is a brief explanation of the key differences between the two:

Regression Testing:

Regression testing involves retesting the unchanged parts of the software after a new code change or update has been made. The main purpose of regression testing is to verify that the recent code changes have not affected the existing functionality of the software. It helps in identifying any new defects or issues that may have arisen due to the code change.

Retesting:

Retesting, on the other hand, refers to testing the specific functionality or feature that has been modified or fixed after the initial testing phase. The focus of retesting is on ensuring that the reported defects or issues have been successfully resolved by the developers. It involves running the test cases related to the fixed functionality to validate that it is now working as expected.

Both regression testing and retesting play a crucial role in maintaining the quality and reliability of a software product by identifying and fixing defects in a timely manner.