What is regression testing ? | VPs Learning Lab | Easy definition

What is regression testing ? 

Regression testing is a type of software testing that ensures existing functionality still works correctly after new features or updates are introduced. Essentially, it checks whether new changes cause any issues or "regressions" in the previously stable code, making sure the old features aren't broken by the new ones

When is Regression Testing Done?

Regression testing is typically performed in the following scenarios

• A new requirement is added to an existing feature.
• A new feature or functionality is introduced.
• The codebase is fixed to solve defects.
• The source code is optimized to improve performance.
• Patch fixes are added.
• A new version of the software is released.
• Changes to the User Interface are made.
• Configuration changes are implemented.
• Integration of a new third-party system with the current system.

Benefits of Regression Testing

• Prevents Domino Effect on Key Functions: Detects issues early, preventing extensive efforts to reverse the damage.
• Aligns with Agile Methodology: Supports continuous iteration, integration, and testing of new code.
• Supports CI/CD Pipelines: Ensures new code integrations are continuously tested, helping find defects and optimization opportunities.

Challenges of Regression Testing

• Time-Consuming: Re-testing everything after each change can be lengthy, especially for large projects.
• Need for Automation: Without automation, it can feel like constantly playing catch-up.

What can speed up the Regression Testing?

Automation testing using selenium and java can be helpful in covering automation testing very effectively.