Which of the following is NOT a recommended practice for ensuring that regression testing does not disturb existing functionality?

Correct option is C

Running tests in a live production environment is not a recommended practice for regression testing because:
1. Risk of Disruption: Tests can interfere with real user operations, causing unexpected behavior or outages.
2. Data Integrity Issues: Test cases may modify or corrupt real user data.
3. Harder Debugging: It becomes difficult to isolate and debug issues in a live environment where multiple processes are running simultaneously.
Instead, regression testing should always be conducted in controlled environments (e.g., staging or QA) that simulate production.
Important Key Points
1. Controlled Environments: Always use staging or QA environments for regression testing to minimize risks.
2. Purpose of Regression Testing: Ensures new changes do not negatively impact existing functionality.
3. Best Practices: Automated testing, comprehensive test coverage, incremental testing, and monitoring/logging complement regression testing without risking live systems.
Knowledge Booster
· (a) Automated Testing:
· Automated tests are critical for running regression tests frequently and consistently, reducing manual effort and time.
· Tools like Selenium, JUnit, and TestNG can help streamline testing.
· (b) Test Coverage:
· Comprehensive test coverage ensures that all critical functionalities are checked.
· Higher test coverage reduces the chances of missing bugs or defects.
· (d) Incremental Testing:
· Incremental testing integrates new changes or fixes into the existing system gradually, reducing the risk of introducing major defects.
· It aligns well with Agile and DevOps practices.
· (e) Monitoring and Logging:
· While not a primary regression testing practice, monitoring and logging provide post-deployment insights into system behavior, helping identify unintended side effects.