Software testing known as “regression testing” used to ensure that current software or code changes did not negatively impact already-existing functionalities. It ensures that modifications implemented to the application code must not damage the current application functioning. Such code modifications might, for instance, introduce new functionalities, correct issues, or update an existing functionality.
In short, in order to verify that the app’s capabilities are operating as intended, testing entails running previously passed test scenarios again with the updated version. Additionally, It is a set of checks rather than a unique test that is run each time something new functionality is added.
There are various advantages of regression testing. It guarantees whether any code modification has negative effects on other functionalities or not. It ensures that problems that have resolved should not come back. Also, it acts as a risk-reduction tactic when testing. Thus, it is simple to learn, comprehend, and analyze. On the other hand, there are some points to keep in mind. It takes time and we need patience. Each time a code line changes, you have to perform the testing. You need to write difficult test cases to perform the test. Therefore, you must consider both perspectives before choosing.
Easiest way to understand regression testing