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Is it Necessary to Perform Regression Testing in Agile?

Aliya Khan

Regression Testing in AgileDevelopment teams favor agile software development all across the globe. In an agile environment, testing is expected to grow geometrically with each sprint. Regression testing is of utmost importance in this scenario, wherein testers need to ensure that the existing functionality of the application remains unaffected by the new changes. Regression testing in agile is of particular importance and cannot be overlooked.

In simple words, regression testing ensures that the previous functionality of the application is working correctly and that the newly implemented enhancements have not introduced bugs into the application. In agile development, regression testing is essential because changes are continuously being added to the application.

To successfully conduct regression testing in agile development it is advisable for testing teams to build a regression suite from the initial stages of the SDLC. This suite should be built on later when sprints add up. A few things to consider and determine before attempting to perform regression testing in agile are:

  • Identifying the test cases that need to be executed.
  • Identifying the improvements that are required to be implemented in the test-cases.
  • Identifying an appropriate time to perform regression testing.
  • Outlining what is necessary to automate in the regression test plan and how to go about doing so.
  • Analyzing the end-result of the regression testing.

Regression testing in agile development is performed under two broad categories:

  • Sprint-level Regression Testing: This regression test is centered around testing the latest functionalities that are implemented since the last release.
  • End-to-End Regression Testing: This test includes end-to-end testing of every core functionality of the product.

It is crucial for the testing team to execute the regression testing suite within a short period when the build frequency in agile development is accelerated. Automating the regression test suite is needed in this case as it ensures that the testing is completed within the given period and also to make sure that the tests are error free. Adding the regression testing suite to the continuous integration flow is also advisable as it prevents the developers to check-in new code and automatically evaluates the correct working of the existing functionality.

The approach used to perform regression testing is another important aspect that determines its effectiveness. After a detailed look into the continuity of their business functions, companies should decide their regression testing approach. Regression testing focusses on the end-to-end set of functions that the software contains and is carried out repeatedly to ensure that the expected behavior of the software remains stable. Regression testing in agile development is successful only when a no tolerance policy is shown towards bugs found in the regression tests. This will ensure that the changes implemented in the application do not obstruct other functions.

While the market is flooded with regression testing tools, not all generate reliable results. The best regression testing tools are both speedy and reliable. Qualitia’s script-less test automation platform is a perfect solution for performing regression testing in agile. Using Qualitia, you can start in-sprint automation as soon as your stories and wireframes are ready.

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