What are the different types of regression testing?

Question

Accepted Answer

Regression testing includes functional, non-functional, unit, integration, and system testing.

Functional regression testing: Ensures existing functionality still works after changes.
Non-functional regression testing: Checks performance, security, usability, etc. after changes.
Unit regression testing: Tests individual units of code after changes.
Integration regression testing: Verifies interactions between components after changes.
System regression testing: Validates the entire system after changes.
Example: After adding a new feature, functional regression testing ensures all existing features still work.
Example: Non-functional regression testing checks if the system's response time is affected by recent changes.

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