WHAT IS REGRESSION TESTING? What are some examples? When a software application is being developed, there will be instances where code changes will take place and it may affect the existing functionalities of the code. The application of regression testing ensures that the existing functionalities of the code are not affected by code changes, updates or improvements. Re-execution of test cases takes place in order to ensure that the previous functionalities of the code are working fine. This testing method also ensures that there are no bugs in the new code changes that are being done.
FOLLOWING ARE A FEW EXAMPLES OF REGRESSION TESTING: PORT TESTING: On a new platform, a program is ported and the regression test suite’s subset is run to ascertain whether the port was successful or not. The main changes of interest are in line with the new platform is considered, rather than the old code that has been modified.
LOCALIZATION TESTING: The user interface is presented through a different set of cultural rules and/or in a different language by modifying the program. There may be several old tests (a few might have gone through modifications so that the new language can be taken into account) involved in localization testing along with quite a few new non-regression tests.
SMOKE TESTING: A new build is qualified by using a small suite of tests. The tester focuses on knowing whether there are any broken components, due to which it is not worth testing a build. In certain scenarios, a corrupt build may be the reason due to which components have been broken. When a build is being rejected then it means the process of smoke testing has failed.
CONFIGURATION TESTING: A new version of the operating system or on a new device is where a program is run. A program may also run, when it is in conjunction with a new application.