Which software testing method relies on using old test cases?

Which software testing method relies on using old test cases?

• A. Regression Testing
• B. Smoke Testing
• C. Unit Testing
• D. Alpha Testing

Answer: (A)

Reusing previously written test cases to verify that recent changes haven’t broken existing functionality is what regression testing is all about. After making code changes, you run the established suite of tests you already have to ensure that features that worked before still work. This helps catch regressions—new defects that slip in when adding fixes or features—by checking the same scenarios that were known to pass. These tests are often automated to quickly validate a broad surface of the software as it evolves. Smok e testing is a quick, broad check to see if the build is stable enough for deeper testing, not about re-running old tests. Unit testing targets individual components in isolation, typically with new tests written for each unit. Alpha testing is internal user acceptance testing conducted early in the development process, not specifically tied to reusing old test cases.

Reusing previously written test cases to verify that recent changes haven’t broken existing functionality is what regression testing is all about. After making code changes, you run the established suite of tests you already have to ensure that features that worked before still work. This helps catch regressions—new defects that slip in when adding fixes or features—by checking the same scenarios that were known to pass. These tests are often automated to quickly validate a broad surface of the software as it evolves.

Smok e testing is a quick, broad check to see if the build is stable enough for deeper testing, not about re-running old tests. Unit testing targets individual components in isolation, typically with new tests written for each unit. Alpha testing is internal user acceptance testing conducted early in the development process, not specifically tied to reusing old test cases.