What is Regression Testing?

Testing conducts on modified build to make sure there will not be impact on existing functionality because of changes like deleting/adding/modifying features.

Three types of Regression Testing:-

1. Unit Regression Testing

- Testing only the changes/modifications done by the developer.

2. Regional Regression Testing

- Testing the modified module along with the impacted modules.

- Impact analysis meeting conducts to identify impacted modules with QA & Dev.

3. Full Regression Testing

- Testing the main feature & remaining part of the application.

Example:- Dev has done changes in many modules, instead of identifying impacted modules, we perform one round of full regression.