Improving code in software development is common and is required to perform regression testing. What is Regression Testing? A techniques use to repeatedly test to validate the functionality of an application, fit in the existing software being tested and without new bugs. Bear in mind, the main goal for regression testing is to check the stability of the existing functionality with new features being implemented.
Have you ever had a problem that was preventing the proper functioning of your software program, it gets solved, but then it recurs again taking back to the starting point or dragging you to an even worse situation when compared to the last? It is in cases like this that regression testing has been used and utilized in the world of software. There is hardly anything that we use as human beings that is not linked to one software application or another. This has brought a lot of efficiency to how we work and operate.
However, it has also led to a great deal of dependency over time. Furthermore, in creating solutions to several problems, the need arises for these solutions stand the test of time through maintenance and qualitative dynamics. Without continually checking for problems and ways to improve the efficiency of software programs the quality of such applications eventually becomes redundant. This is the reason behind the routine diagnostics that these codes get.
Although, that is simply retesting and not regression testing, as it is merely trying to evaluate the functionality of the codes and detect any faults that they potentially exhibit. The concept of regression is that which seeks to validate the solutions that have been provided during the retesting stage. In the case where the code is fixed, everything returns to normal, but if that does not occur, then the Defect requires being reopened for fixing.
Regression testing is an essential part of running a software application, and the codes need to be bug-free. There are quite serious challenges that could be encountered trying to get this done. New bugs could be introduced mistakenly, there may be cases of redundancy or even repetition ratio. The overall aim of regression testing is to ensure that all these challenges are overcome excellently.
Another reason why regression testing is of utmost importance is to avoid situations where the functionality of the previous codes is affected in the process of fixing the old errors. It is critical that while undergoing a change or upgrade from an earlier version of a particular application to a newer one. The basis of most upgrades is to fix a bug in the former, and that needs to be done effectively, to make the new version a better one and not an application with even more problems. It is mostly a sort of performance augmentation and testing in itself. It can be carried out as a form of attacking the system to test for the strength and capability of the existing quality.
Most people use smartphones, and we continuously experience updates that seem to improve the performance of the phone instantly. Sometimes, companies may even roll out a different version of the same model or do one better, and release a new product with much better specifications. These are moments that the world experiences the hard work of experts behind the scenes who have created a seamless system of regression testing before these products are introduced to the public.