The Importance of Automation in Regression Testing

Mobile apps are the reason behind the increasing popularity of smartphones. Nowadays 90% of the millennial generation depends on apps for their daily chores as it’s a major part of their lifestyle. So their demands and expectations are growing and subsequently businesses are focusing on providing the best user experience for their customers. But according to a study it was estimated that 70% of the app users tend to uninstall an app due to the reasons like technical issues, high loading time, complicated navigations etc. One method that can guarantee optimum quality of mobile applications is to have them thoroughly tested. Often regression testing is overlooked because of being repetitive in nature but it’s one of the most fundamental testing techniques that is imperative to include in the app development pipeline. Also it is mostly automated to achieve efficient testing results. So lets have an overview on the fundamentals of Regression testing and why it is crucial to automate it.

 What is Regression Testing ?

 Regression testing is done when a piece of software is subjected to changes in order to confirm that the change in the code does not affect the remaining or existing functions of the software. Mobile app industry has become very dynamic because of the dependability and subsequently the growing expectations of the users hence mobile app development is inevitable to changes. So an environment that demands frequent changes we need to have a set of test suites of regression testing to check that the change does not affect the main functionality of the software. Many times Regression testing is overlooked because of its repetitive nature but its the most imperative testing suite which assures reliability of a software product.Most of the organizations tend to automate regression testing because manually performing these test cases takes tremendous effort and time.

Types of Regression testing  

Regression testing can be done in many ways and the methodology depends on factors like type of change introduced in the function, number of bugs fixed etc.

Some of the most common types of Regression tests are as follows:

Re-test all Regression testing

 This is the most tedious type of testing and tends to waste a lot of time. The strategy involves the testing of all aspects of a particular product as well as reusing all test cases even where the changes/modifications have not been made.

This type of testing is not at all recommended when a small change has been introduced in the product

Selective Regression testing

 This type of testing is done to analyse the impact of adding new code to the already existing code of the software

When performing this type of regression testing a small subset of the test suit is used for testing to avoid the unwanted time , effort and the cost involved

Progressive Regression testing

 This type of regression testing is done to check the effect of introducing a new code in the existing functionality.

This type of regression testing ensures that there is no effect of new code changes in the existing and all other functionalities of the application

Unit Regression testing

Unit Regression testing is the most important type of Unit Testing. It is usually done in isolation,mostly focused on the unit code and all other dependencies and interactions will be blocked at that time.

To conduct this type of testing it is crucial to select proper type of regression testing, keeping in mind some factors like the area of recurrent defects, the criticality of the feature etc.

But, what remains on the priority is ensuring that the software delivers the best functionality and proves to be a beneficial addition to the industry.

 Why is Automation Crucial for Regression testing ?

 From the above discussions one thing is clear that how important it is  to conduct regression testing and specially in app development where changes in features are made so frequently. Regression testing involves retesting as it is conducted on the entire application when a new code is introduced to ensure that it doesn’t affects the existing features and functions of the application. As it requires a lot of time and effort to execute these lengthy test suites are always prefered to get automated.

To meet the dynamics of the frequently evolving application industry, businesses are creating and developing advanced technological solutions that can facilitate the upgradation of a software product (application) conveniently, to meet the ever changing demands of their users.

Today many organizations are following the DevOps where we use continuous integration and continuous delivery to accelerate the software development cycle. In this type of software development process, the codes are committed several times in a day. That means software development is carried out at each and every stage of the development lifecycle. Where there is development there is testing, so testing is also performed throughout the development cycle, it is also termed as continuous testing. Regression testing being such a fundamentally imperative test suite cannot be neglected. So in an  environment where software testing is performed in such a quick and rapid fashion, regression testing suite need to be automated otherwise it might break the chain of yielding efficient and faster outputs.


With the advancement in technology, one of the most powerful strategies which would shape the future digital world is Cloud technology. The combination of cloud, mobile, big data and analytics will add to the digital disruption. Having said that, let me inform that cloud platforms can do wonders in the field of mobile application testing. pCloudy is a mobile app testing platform which is highly scalable and can be implemented in high tech environments like agile and devops to streamline the ci/cd pipeline.

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