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Home » Regression Testing

Regression Testing

Regression Testing is a type of software testing that involves re-executing previously conducted tests on a software application after changes or updates have been made. The primary goal of regression testing is to ensure that new code modifications, such as bug fixes, enhancements, or new features, do not introduce unintended defects or break existing functionality.

The key aspects of regression testing include:

  1. Test Re-execution: The process involves rerunning existing test cases, often from previous testing cycles, to validate that the software still performs as expected after changes are made.
  2. Scope: While regression testing can cover the entire system, it typically focuses on the parts of the application that are directly or indirectly affected by the changes. This ensures that the modified areas function correctly without disrupting the stability of other components.
  3. Automation: Regression testing can be time-consuming, especially when it involves large systems with numerous test cases. Therefore, automation tools like Selenium, Cypress, or others are commonly used to execute these tests more efficiently and repeatedly.
  4. Identifying Side Effects: One of the main objectives is to identify any side effects of code changes, where previously functioning features may break due to the introduction of new code.
  5. Test Coverage: It ensures that the areas of the software impacted by the changes are adequately tested, as well as verifying that no unintended regressions occur in unaffected areas.
  6. Continuous Integration: Regression testing is often integrated into continuous integration (CI) pipelines, enabling frequent and automated testing whenever code changes are pushed to the repository.

Overall, regression testing helps maintain software quality over time by verifying that software updates or bug fixes do not compromise previously stable functionality. It is an essential part of maintaining software integrity throughout the development lifecycle, especially in agile or iterative environments.

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