What is regression testing in software development?
a) Testing to ensure that new code does not break existing functionality
b) Testing the performance of the system under heavy load
c) Testing for security vulnerabilities
d) Testing the usability of the software
Answer:
a) Testing to ensure that new code does not break existing functionality
Explanation:
Regression testing is the process of testing software to ensure that recent code changes have not introduced new defects or broken existing functionality. This type of testing is essential after new features or bug fixes are added to the system.
Regression tests help maintain the stability of the system by verifying that previously working features continue to function correctly after changes. They are often automated to reduce the time and effort required for repetitive testing.
Regression testing is a key part of maintaining software quality, especially in large, complex systems with frequent updates.