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How regression testing is different from functional testing?

The newly deployed code is rechecked in order to ascertain the impact of updations, modifications or changes done to the code through the regression testing method. The features and functions of a product are tested in order to ascertain whether the product is built according to the product specifications through the functional testing method. In this article, you will know about the differences between regression testing and functional testing.   

What is Regression testing?

It is a testing method that ensures that the modifications, updations or changes done to the code don’t affect the existing functionalities of the software application. Already executed test cases that are partially or fully selected are re-executed to ensure that the existing functionalities work just fine. Whenever the requirement arises for making changes in the code, the modified code needs to be tested in order to ensure that other parts of the software application are not affected.


Even a small tweak in the code may give rise to unexpected consequences. Through the regression testing method, the existing software application is tested in order to ensure that an addition or change hasn’t affected any existing functionality.

What is Functional testing?

It is a testing method where a software application or system is tested against the specifications and functional requirements. Each function of the software application is verified in order to confirm whether the application works according to the specified requirements or not. Appropriate input is provided to every function of the software application so that the output can be verified against the functional requirements.

Through the application of functional testing, Client/server communication, security, database, APIs, User Interface and other functionality of the application under test are checked. QA teams implement the platform of functional testing to ensure that a certain section of the software is in line with pre-determined requirements.



Difference between regression testing and functional testing:

Regression testing

Functional testing

It is not feature specific

It has limited scope and is feature specific

It is focused on testing a product end-to-end

It is focused on testing every function of the software application

This testing method focuses on fixing the software product issues and ensure that the code is working as expected

This testing method focuses on the working of a feature

Acceptance criteria of several features are focused upon, instead of just one feature that was added, updated or fixed

Testing is performed to ensure that the features are working as per the required expectations

The purpose of this testing method is to ensure that the updated code did not have any adverse effects on the existing functionalities of the software application

The purpose of this testing method is to perform a microscopic examination on a specific code or functionality in order to make sure that a standard quality is maintained

A developed product is tested on a continual basis focusing only on those areas that have been updated

Individual modules or functionalities as a whole are tested

When the code is being manipulated and the issues are being repaired, this testing method is performed

When a system is being described and it’s working and functions are determined, this testing method is performed




Conclusion: If you are looking forward to implementing regression testing or any of the other software testing types, then do visit online a globally acclaimed software testing services company that will provide you with a viable testing roadmap in line with your project specific requirements. Our expert testing team will provide you with the necessary support and also provide professional advice in order to make sure that productive results are derived.

About the author: I am a technical content writer focused on writing technology specific articles. I strive to provide well-researched information on the leading market savvy technologies.

 

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