Regression testing is an essential part of the maintenance of any software which undergoes modifications since it offers information if an application still works as supposed after the changes are made. This article will help you to understand how crucial regression testing is and how it can be performed in the most efficient way.
The Importance of Regression Testing
While some types of software are modified on rare occasions, there are also systems such as ERP cloud platforms facing continuous changes. Each of these changes, especially the major ones can cause unexpected behaviour in the system or even dramatically disrupt its performance. Even if the modification of the software has been designed for its optimisation, it can still make the code stop working properly. Avoiding such unwanted scenarios is exactly the aim of regression testing.
When Should Regression Testing be Performed?
Since regression tests are carried out for identifying unexpected behaviour of modified software, there are many situations when regression testing will be useful. Of course, any updates and upgrades of the software are perfect moments for performing regression tests. These tests will also be helpful after fixing bugs or the performance of the code. In addition to it, whenever new features are included in the programme or the requirements for the already existing functionality are changed, it is also high time to go through regression tests.
It is certainly better to be aware of the implications of the code modification before it is deployed, so the sooner the tests are applied, the more you are able to benefit from them.
Automation of Regression Testing
Even though it is possible to perform regression testing manually and it is definitely better than completely omitting this step, manual testing can be rather expensive. In addition to it, manual testers might experience difficulties setting a proper strategy for testing, especially if there is a great number of modifications coming out frequently.
Tools for automated regression testing can improve the testing process and save large amounts of money in the long run. All of the necessary parts of the process can be optimised with automation starting from the scheduling step and moving to the test performing and maintaining. Furthermore, the test scripts designed for regression tests can become a foundation for other testing procedures, for instance, performance testing.
On top of that, automated tools for regression testing assist in the creation of the documentation which can be utilised for various purposes including audit materials and user manuals.
Can Regression Tests be Skipped?
As far as you can see, even in situations when there are no specific requirements for performing regression tests in the company, such testing is highly recommended. Without regression, tests a team will not be able to validate the behaviour of the code. Undeniably, the unpredictable output of a code makes software unreliable.
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