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Regression Testing

Regression Testing

Regression testing is a type of software testing that ensures recent code changes, such as new features, bug fixes, or updates, do not negatively impact the existing functionality of an application. It helps verify that the software's behavior remains consistent and that no new issues have been introduced in parts of the system that were previously working correctly.

Key Objectives of Regression Testing

Functional testing Verify functionality

Ensures that previously functioning features still work after updates or changes.

Performance Detect side effects

Identifies any unintended consequences of new code changes.

Maintain Product Quality

Helps in maintaining a stable product throughout its development lifecycle.

When to Perform
Regression Testing

  • After Bug Fixes
  • After New Features
  • After Changes in Environment
  • After Code Refactoring
  • After Performance Improvements

Types of
Regression Testing

  • Corrective Regression Testing
  • Progressive Regression Testing
  • Selective Regression Testing
  • Retest-all Regression Testing
  • Partial Regression Testing
  • Complete Regression Testing

Benefits of Regression Testing

Increasedconfidence

Increased Confidence

in the software's stability after changes

Issues

Early Detection of Issues

Ensures defects are caught early before they impact the end-user experience.

ImprovedCodeQuality

Improved Code Quality

Helps in maintaining high-quality standards throughout development.

ReducedRisk

Reduced Risk

Minimizes the risk of introducing new bugs during updates, keeping the system stable.

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