Importance of Automated Regression Testing in SDLC

 



Regression Testing is a testing process includes in software testing. Regression testing is the process of testing existing software applications to ensure a change or addition has not broken any existing functionality. Before making a change, a program is tested. After a change is made, the program is retested in required areas to detect whether the change created new bugs or problems, or if the intended change fulfilled its intended purpose.

 

To achieve efficient Regression Testing, consider the following:

 

  • what test-cases must be executed;
  • what must be enhanced and changed in the test-cases;
  • when it is mandatory to implement regression testing of the system;
  • what and how should be automated;
  • what is required to perform the automated testing;

 

Regression Testing vs. Retesting

 

Retesting

 

Retesting is performed to authenticate or confirm that the failed test cases in the final execution are clearing after fixing the defect.

 

Retesting has the highest priority than regression testing, so it is done first. Retesting is a strategized testing and is performed only for failed test cases. Test cases for retesting cannot be acquired before the start of the test.

 

Regression testing

 

Regression Testing is performed to check whether existing program change has affected any of the recent features. It is not used for defect validation and verification. Regression testing can be done simultaneously with retesting. It is also called as generic testing and is performed for the successful test cases.

Since manual testing could be expensive and time-consuming, Automation for regression testing can be done. Automation testing is significant for testers as it saves time and generates effective and efficient end-product. 

 

 

Limitations of Automation

 

  • Software Test Automation diminishes manual labor, but it requires many expert resources to deploy multiple test scenarios. Enterprises need to hire software testers having good coding skills. There are two different types of code running parallelly in case of automation testing. The testing code by testers and developers' application code are the two different types of automation testing.

 

  • If regression testing becomes automated, then the point of performing it may overtire. Implementing some manual testing and GUI based IDEs to the system will take automation to the next level.

 

The Role of Automated Regression Testing in SDLC

 

Software industries know the importance of regression testing as even the best new functions remain inconsequential if they cause problems in the existing operations. Automated regression testing plays a vital role in multiple cases such as when you change the code of the application during Software Development Life Cycle(SDLC), if the application requirements modify in between the cycle, when you plan to undertake improved/upgraded software or when you are looking to fix the issues swiftly. In automation regression testing, test cases are re-implemented to verify the functioning of the old functionality and identify new bugs due to the addition of new functionalities in the application.

 

Due to time and budget limitations, Companies don’t pay much attention to the importance of regression testing and provide very little time and resources to it. Because of this, most of the time, all the old efforts on testing go vain, and the outcome does not meet the required quality levels. This leads to dissatisfaction among the clients and product failures. The automated regression testing approach solves this problem in various ways. As it accelerates the regression testing, it doesn’t affect the product deadlines, non-working functionalities, and timely detection of bugs save more time and resources spent on maintenance. This increases the return on investment (ROI)

 

Regression Testing Tools

 

Automated Regression Testing is the test automation where we can automate all of the testing efforts. We run all the executed test cases on a new build, which is time-consuming since the test cases are allowed to run manually. We know the expected outcomes, so automating these test cases is a time saving and efficient regression test automation method. The extent of automation relies on the number of test cases that are going to remain applicable overtime. If test cases are changing from time to time as application scope improves, then the regression automation procedure will be a waste of time.

 

Few examples of Regression testing tools 

 

  • Winrunner
  • QTP
  • AdventNet QEngine
  • Regression Tester
  • vTest
  • Watir
  • Selenium
  • Rational Functional Tester
  • SilkTest

 

Most of the tools mentioned above are both functional and regression test tools. Attaching and updating regression test cases in the automation test suite is a massive task. When selecting an automation tool for regression tests, you must verify if the tool permits you to add or update the test cases without complexity. 

 

Benefits of Regression Testing

 

  • Regression testing escalates our chances of finding bugs caused by software and application modifications- either improvements or defect fixes.
  • Regression testing also identifies unwanted tasks always caused by changing the operating platform.
  • Regression testing is much helpful for a new way of doing integration testing. 


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