Regression Testing: A Complete Guide © 2022 HeadSpin. All Rights Reserved What is regression testing, and why do we need it? Regression testing is a type of software testing conducted to confirm that a recent change or upgrade in the application has not adversely affected the existing functionalities. A regression testing approach is needed to evaluate the overall working of the application after it has undergone a recent change. 1 Examines the functionality of the upgrade 2 Ensures that the change does not interfere with existing features 3 Identifies any errors or bugs in the application's existing functionalities 4 It helps determine bugs in the newly pushed code © 2022 HeadSpin. All Rights Reserved Strategy for Regression Testing -What to Test, How Often Here are some tried and tested proven strategies that you could follow during regression testing: 1 Measure or change the scale of the upgrade to determine how likely it would affect the application. 2 When introducing automation testing, outline the test cases and scenarios to know which should be automated and manually tested. 3 The regression testing approach must cover all the possible test cases and impacted functionalities. 4 Focus on the testing process, technology, and roles when automating regression testing 5 Perform risk analysis based on the size of your business/project and its complexity, along with its importance © 2022 HeadSpin. All Rights Reserved How does one manage regression risks and ensure they don't impact the product release schedule? The risks associated with regression testing can significantly impact the product release schedule. The following are some tips for managing regression risks: 1 Proactively identify and assess regression risks before starting the regression testing process. You can then focus all your efforts on the most critical areas. 2 Use risk mitigation strategies to reduce the impact of identified risks. For example, if a particular threat could result in data loss, you could create backups to mitigate the risk. 3 Use a structured approach for managing regression risks, such as a risk registry or risk management plan; this will help ensure that all threats are captured and tracked. 4 Communicate any potential impacts of regression risks to stakeholders to make informed decisions about the release schedule. © 2022 HeadSpin. All Rights Reserved When deciding whether to automate regression tests, consider the following: While regression tests are an essential part of the software development process, they can also be time-consuming and costly. Automating regression tests can help reduce the cost and time of regression testing while providing high coverage. THE TYPE OF APPLICATION UNDER TEST: Automated regression testing may not be feasible for all applications. For example, if the application has a complex user interface, it may be challenging to automate UI-based tests THE FREQUENCY OF CHANGES: THE RESOURCES AVAILABLE: THE COVERAGE DESIRED: If the application is subject to frequent changes, automated regression tests can help save time in the long run. Automated regression testing requires a significant upfront investment in time and resources. If the project budget is limited, automating all regression tests may not be possible. Automated regression tests can provide high coverage if well-designed. However, manual testing may be necessary to supplement automated tests and achieve 100% coverage. © 2022 HeadSpin. All Rights Reserved PREPARE FOR MANUAL AND AUTOMATED TESTS This involves getting the required tools and resources ready, such as test data, How do you perform regression testing on your applications or software products? test cases, test scripts, and more. IDENTIFY CHANGES OR UPGRADES ON EXISTING MODULES You need to specifically identify which areas of the application will be affected by the changes or upgrades to focus your testing efforts during regression testing on those areas. Why Your Team is amazing Once you have identified the impacted functionalities, you can use both manual and automation tests to validate that the changes or upgrades have not adversely affected those functionalities. © 2022 HeadSpin. All Rights Reserved Regression Testing Tools: Which tools to perform your software regression testing? These are some of the most famous regression testing tools available today. Each has its strengths and weaknesses, so choosing the right tool for your specific needs is essential. Headspin is a regression Selenium is a popular JUnit is a popular Appium is a tool for mobile testing tool that uses open-source tool for web open-source unit testing application regression intelligent test automation application regression framework for Java testing. Testers can use it to test web and mobile testing. Testers can use it development. Testers can to automate tests against applications. HeadSpin to automate tests against also use it for regression native, web, and hybrid designed the platform to both web and mobile testing by creating test mobile applications. help developers quickly applications. It supports cases that exercise the Appium supports a wide identify and fix any various browsers and functionality of an variety of mobile regressions before operating systems, making application. platforms, making it a reaching production it a versatile option for versatile tool for regression regression testing. HeadSpin Selenium JUnit Appium © 2022 HeadSpin. All Rights Reserved Framework for regression testing - the different methods of setting up a framework When the testing team opts for automated regression testing, they simultaneously must define the test automation framework for the purpose. Here is how a defined architecture plays a vital role in automated testing: 1 A designated QA professional, along with their preferred choice of automation testing tool 2 A suitable and relevant structure for regression testing includes test cases and test suites. 3 A basic testing script to run the regression testing, which is also scalable and accommodating to the new test case. 4 Before developing a test automation framework, QA professionals complete integration tasks to ensure that they can focus solely on running the script for regression testing. © 2022 HeadSpin. All Rights Reserved Types of tests that you can use in a regression framework There are several types of tests you can conduct using a regression testing framework: 1 2 3 4 5 Re-run previous test cases and compare the results with the earlier outputs to check the application's integrity after code modification Conduct regression testing by running only a part of the test suite, which might be affected due to the code change Take a regression testing approach where you execute test cases priority-wise; you run higher priority cases before lower priority test cases The above two techniques can be combined for hybrid test selection, running regression testing for a part of the test suite based on its priority. You can prioritize test cases based on checking the upgraded/subsequent version of the application or the current version. © 2022 HeadSpin. All Rights Reserved Conclusion HeadSpin's intelligent approach toward delivering aggregation and regression testing insights helps professionals monitor, analyze, and determine the changes in the application. HeadSpin offers build-over-build regression and location-to-location comparison with its AI-powered regression intelligence across new app builds, OS releases, feature additions, locations, and more. © 2022 HeadSpin. All Rights Reserved Thank you! Reference URL: https://www.headspin.io/blog/regression-testing-a-complete-guide
