What is Regression Testing?
Regression testing is a crucial aspect of software testing that focuses on verifying that recent code changes have not adversely affected existing functionalities. This process ensures that new modifications do not introduce new errors or regression bugs in previously working software features.
In the context of manual testing, regression testing involves testers executing a set of predefined test cases that cover the application's core functionalities. Testers rerun these tests after each significant change in the codebase, such as bug fixes, new features, or enhancements, to validate that the application still behaves as intended.
Regression tests can be executed either as a complete suite, including all existing test cases, or selectively, focusing on areas impacted by recent changes. Effective regression testing helps maintain software quality over time and is a key practice in agile development environments, where frequent iterations and deployments occur.
While automation can play a significant role in regression testing, manual testing is equally important, especially for exploratory testing and scenarios requiring human judgement. This hybrid approach ensures thorough coverage and enhances the reliability of the software before release.
Overall, regression testing is an essential practice in the software development lifecycle that aims to safeguard against unintended disruptions, ensuring a stable and reliable user experience.