How to do regression testing?

Regression testing is an important part of software testing, conducted regularly to verify that the application continues to function as expected after changes, updates, or bug fixes.

Here is the step-by-step process on how to perform regression testing:

Step 1: Identify the Scope: Determine which areas of the application need testing based on recent changes or modifications.

Step 2. Create a Test Suite: Develop a regression test suite combining new and existing test cases that cover the affected functionality.

Step 3. Execute Tests: Run the regression test suite to check for defects introduced by changes.

Step 4. Analyze Results: Review the test outcomes to identify issues or defects.

Step 5. Fix and Retest: Address defects found during testing, then re-run the test suite to confirm the fixes.

Step 6. Automate Testing: Use testing tools to automate repetitive regression tests, improving efficiency and consistency.

Step 7. Schedule Regular Testing: Perform regression testing regularly, especially after significant changes or updates to the application.

What are the types of regression testing?

Different types of regression testing are used based on the changes made to the software. Choosing the right type helps the software work correctly after updates.

1. Corrective Regression Testing: Reuses existing test cases without changes when no updates are made to product specifications. Ideal for minor bug fixes or small enhancements.
2. Retest-All Regression Testing: Runs all test cases to ensure no part of the application is affected. Used for major changes or releases but is time-consuming.
3. Selective Regression Testing: Tests only relevant parts of the application based on changes, saving time and effort.
4. Progressive Regression Testing: Combines old and new test cases when new features or significant changes are added.
5. Complete Regression Testing: Tests the entire application comprehensively after major updates or restructuring.
6. Partial Regression Testing: Focuses on specific changes and their immediate dependencies to verify functionality.
7. Unit Regression Testing: Tests individual components in isolation to ensure no internal issues arise from changes.
8. Smoke Regression Testing: Runs basic tests to confirm major features work after updates, ensuring build stability.
9. End-to-End Regression Testing: Checks the entire workflow to ensure changes in one area don’t disrupt overall functionality.
10. Non-Functional Regression Testing: Examines non-functional aspects such as performance and security to ensure quality after changes.

Can you do regression testing manually?

Regression testing can be done manually, but it can be time-consuming and resource-intensive. Manual regression testing involves executing predefined test cases to ensure that recent changes have not negatively impacted existing functionality. However, for efficiency and consistency, it’s often recommended to automate repetitive regression tests, especially for large or complex applications.

Does QA do regression testing?

QA testers perform regression testing as part of their responsibilities. They verify that changes, such as bug fixes or new features, have not negatively affected existing functionality. This ensures the overall stability and quality of the application before release.