Can regression include a full set of tests?

Yes, regression can include a full set of tests, especially if the changes in the code are significant or affect many functional areas.

Regression testing aims to verify that new changes have not broken existing functionality. Depending on the project and resources, regression can be:

• Full — running all tests to ensure maximum stability.
• Partial — running the most critical or affected tests.

A full set of tests during regression provides the highest confidence but requires more time and resources.