Regression Testing in Agile and its Best Practices

In the software testing spheres, regression testing serves an integral role as it helps QA engineers to re-run functional and non-functional tests. Businesses offering offshore testing services utilize regression testing for the complete spectrum of QA. But in order to maintain successful implementation in agile environments, QA engineers need to follow the industry’s best practices. This helps them to build effective regression testing suites right at the start of a software’s product development to ensure all functionalities work flawlessly.

What is Regression Testing?

Regression Testing is defined as a kind of software testing to verify that a recent program or code change has not adversely affected existing features. Put simply, regression testing is a full or partial selection of already executed test cases that are repeated to make sure the existing functionalities work fine. The point of this testing is to affirm that the new code changes do not showcase side effects on the prevailing functionalities. It ensures that the old code still works once the newest code changes are done.

 

The need for regression testing (as a part of offshore testing services) mainly arises whenever there’s a requirement to alter the code and there’s now a need to test whether the modified code affects an opposite part of the software application or not. Moreover, regression testing is required, when a replacement feature is added to the software application. It can also be used for fixing defects and sorting out performance-related issues.

Best Practices for Regression Testing

Defining a clear regression test strategy

The importance of highlighting a clear test strategy for regression testing in an agile environment can’t be understated. And to achieve this, the strategy should include:

  • Collecting all test cases
  • Highlighting the improvements that can be made for the test cases
  • Estimating the time required for the execution of these test cases
  • Sorting which ones can be automated from the manually tested batch

Conduct smoke and sanity tests

Saving valuable time for testing teams is always a benefit. This is why smoke and sanity tests need to be conducted before regression tests. Sanity tests ensure a run-through of the basic functionality of an application and smoke tests are used to test the start or initial workflows such as login and startup pages.

Leverage test automation

As every release cycle must include regression testing to make sure new developments don’t break the other existing functions, it’s ideal to adopt test automation to save lots of time and effort for testers. Effectively, if a parallel run of automated regression testing is performed, then the method can enormously save time and improve the software quality for your offshore testing services.

Maintain and update regression packs regularly

Essentially, a regression pack is a collection of test cases that are executed with a new software update for every feature. This regression pack consists of test cases that are written and drafted using the specific need specifications document.

Adopt complete regression testing

A comprehensive regression testing is important and will be administered and it should cover all the critical conditions. This type of ultimate regression testing should be implemented to certify that the functionality has not been altered and affected as new code changes are made.

Perform continuous testing

In Agile methodology, continuous testing is the backbone that guarantees quality software. The method states to ‘Fail fast’ and ‘fail often’ through continuous testing, such defects are fixed fast by the developers. This way, the defects are addressed before delivery with minimum impact on software. Moreover, continuous integration and continuous delivery in agile & DevOps practices require continuous testing with automated regression testing.