Regression Testing
What is regression testing:
is a software testing process that aims to verify that the most recent code changes or updates to a software application, or website application do not impact existing functionality in a bad way.
It involves re-executing some selected test cases related to the existing test suite to ensure that no new bugs or defects have been introduced and that the software continues to function correctly after changes.
Top 3 key points to focus when performing a regression testing
Test Case Selection:
Focus on selecting a well-balanced set of test cases from the existing test suite. Prioritize test cases that cover critical and frequently used functionalities of the software. High-risk areas, areas affected by recent changes, and core business workflows should be included in the regression test suite.
If more than one round of testing has being done, identify the Test cases that have historically uncovered defects or those that cover integrations with other modules should also be given special attention.
Test Data Management:
Ensure that the test data used for regression testing is representative of real-world scenarios and covers a variety of scenarios. Test data should include both positive and negative test cases, boundary values, and edge cases. Proper data management is essential to avoid data corruption and to ensure accurate results during regression testing. Automated scripts should be designed to handle different data scenarios efficiently.
Automation:
Leverage test automation to increase efficiency and effectiveness in regression testing. Automated regression testing helps execute a large number of test cases rapidly and consistently, allowing for quicker feedback on code changes. Automated test scripts can be easily rerun after each release or update, ensuring thorough testing without the overhead of manual execution. However, it's important to periodically review and update the automated scripts to keep up with changes in the application.