Here's how you can address interview questions on regression testing in Quality Assurance.

- When talking about regression testing in interviews, say it checks if new code changes break anything that already works. Highlight its importance in maintaining stable and reliable after updates/bug fixes. - Talk about good strategies to do regression testing. Mention automated testing tools like Selenium/Cypress to run repetitive tests efficiently. - Highlight the need to prioritize regression tests. Test the most important areas, key functions, and parts that were recently changed. This makes sure the imp parts of the app are well-tested. By understanding regression testing, using effective strategies, and prioritizing tests, you can confidently address interview questions on this QA process.

¿Alguna vez has comprado un carro usado? Cuando lo haces usualmente, enciendes el carro, escuchas que no haya sonidos que llamen la atención, abres el capo en búsqueda de información (por encima) que te pueda llamar la atención, y te subes y conduces un par de minutos verificando que las características del vehículos se acomoden a ti. Las pruebas de regresión son muy parecidas, son pruebas específicas que buscan verificar que el funcionamiento clave de tu producto, siga funcionando como debe ser. Usualmente no subes el carro a una grúa y verificas que haya abolladuras en el tubo de escape, o desarmas a ver si el motor es el original; haces pruebas clave que validen el funcionamiento del software, pero en este caso después de un cambio.

When talking about regression testing in an interview it is important to discuss the purpose of regression testing, and who should be involved in selecting what should be regression testing: it isn’t a solo decision made by the tester, they need to discuss what could be impacted with the developer and architect, to understand the areas that require regression testing. You need to know the risks, and to what the potential impacts to decide the level of coverage required

1. Regression Testing involves re-running tests to ensure that previously developed and tested software still performs correctly after changes. 🔄 2. Explain that RT confirms recent code changes haven't introduced new defects, maintaining software integrity. 🛡️ 3. Highlight the critical role of RT in continuous integration and deployment practices for quick validation of frequent changes. 🚀

This is what I would put forward:- 1. The most used flows by the business users, considering the integration for a more end to end so that correct priority is associated with. 2. Tools and techniques that need to be used to not only automate but use them efficiently when needed or define what phases they could be executed. 3. Thorough impact analysis of the code changes plays an equally important role when the selection is to be done from a huge regression suite. 4. Re-reviewing the suite on intervals with the team keeps the regression suite more relavent.

Selecting test cases for regression testing requires a strategic approach for comprehensive coverage and efficiency. Here are the key points, Prioritize Impact and Risk: Core Functions: Focus on test cases covering essential functionalities. High-Risk Areas: Target complex and frequently modified code. Focus on Recent Changes: Modified Code: Test recent changes such as bug fixes and new features. Integration Points: Prioritize test cases covering module integrations. Balance New and Existing Tests: New Features: Ensure new features work and don’t disrupt existing functionality. Existing Functionality: Test unchanged core functionalities to ensure stability.

Test selection is the process of determining which test cases should be executed to maximize coverage and effectiveness while minimizing effort and resources. It is crucial in both manual and automated testing.

Automation in regression is important, to minimize the time effort to test the existing code or feature, if the currect feature was still working fine upon deployment of new feature.

It is important to point that automated regression focuses on existing functionalities that were not altered. New modules are tested manually.

Time Savings: Automation drastically reduces the time taken to execute repetitive test cases, allowing testers to focus on more complex or exploratory testing. This enables faster feedback loops and quicker resolution of issues. Reduced Human Error: By automating test cases, the risk of human error is minimized, ensuring consistency and accuracy in test execution. This enhances the reliability of test results.

Regression testing means different things for different people (Based on the role they play the organization).In my experience the best practices to follow while creating regression testing suite are: 1. Collaborate with project team (Product Owners, users, BAs, BSAs, developers) to understand both the business and technical perspective to curate a effective RT suite. Get the signoff before resuming any work. 2. Automate all the regression tests except anything that has technical limitations. 3. Anything that cannot be automated can be manually tested. 4. Each release this RT suite needs to be revisited to ensure the scripts are up to date and effective for the purpose. The production support team plays an important role here as well.

For RT Best practices: Automate repetitive tests for efficiency, prioritize tests based on risk and impact, integrate testing into CI/CD pipelines for continuous validation, maintain and update regression test suites regularly and use risk-based testing to focus efforts effectively

Maintain a Regression Test Suite: Keep a well-organized suite of test cases that cover all critical functionalities and frequently impacted areas. Prioritize Test Cases: Focus on high-risk areas, recent changes, and core functionalities. Use risk-based and requirement-based testing techniques. Continuous Integration: Integrate regression testing into the CI/CD pipeline to run tests automatically with every build.

Best Practices for Regression Testing Regression testing is an essential component of the software development lifecycle. It ensures that new changes or enhancements to a software application do not adversely affect existing functionalities. Implementing best practices for regression testing can significantly enhance the efficiency, effectiveness, and reliability of the testing process. Here, we outline key best practices that can help in achieving optimal regression testing results. 1. Prioritize Test Cases 2. Automate Regression Testing 3. Maintain an Updated Test Suite 4. Use Selective Regression Testing 5. Run Regression Tests Regularly 6. Ensure Comprehensive Coverage 7. Monitor and Analyze Test Results 8. Collaborate with Teams

As applications evolve and new features are added, test suites tend to grow in size and complexity, making maintenance a significant challenge. Outdated or redundant tests can lead to longer test cycles and reduced efficiency.

Improving a regression test suite means regularly checking and updating test cases to match the latest product features. This includes removing old test cases, adding new ones for recent changes, and making existing test cases faster and more thorough. Keeping up with these changes ensures the tests stay useful and reliable for catching issues in the software.

Adopting New Tools Advancements in technology offer numerous opportunities to enhance regression testing. Keeping abreast of industry trends and actively seeking out new tools and technologies that can automate or optimize testing processes is a proactive approach. For instance, adopting automation frameworks, test data management tools, and continuous integration/continuous delivery (CI/CD) pipelines can significantly improve the speed, consistency, and reliability of regression tests. These tools enable teams to automate repetitive tasks, reduce manual errors, and quickly respond to changes in the software.