What is Regression Testing? – Tools, Types and Techniques

1. WHAT IS REGRESSION TESTING Tools, Types and Techniques

2. WHAT IS REGRESSION TESTING? According to Wikipedia, Regression testing is an important type of software testing that revolves around re-running functional and non-functional tests. These tests are conducted to ensure and check the previously developed and tested software still perform well even after a change is made in the software. Primarily, it checks whether the previous functionality of an application is working as intended even with a new feature added. It checks for any new bug or error in the existing software and is a verification process that takes place in the software. Whenever the new software is released, there is an essential need to test the new functionality. There is a necessity to re-run the old tests to ensure that new software does not re-introduce any old defects or create new ones that might affect the existing functionality. Though software regression testing seems to be a simple concept, it is quite challenging as it tests the functionality of the added features. This verification process effectively holds immense importance, especially when there are continuous changes or improvements that are made in the application.

3. WHEN SHOULD REGRESSION TESTING BE TAKEN UP? Whenever a new feature is developed, when an existing feature is improved or if any UI updates are made, ideally, there is a need to perform software regression and functional testing. It will ensure that the changes do not impact the software’s existing functionality. In addition, the verification method should be performed whether there is a small or significant change in an application that might affect any change to its old functionality. Functional regression testing teams must verify that the new code does not conflict with older code, and also confirms that the code that has not been changed is still working as expected. Therefore, this type of visual regression testing ensures that the previous functionality of the application works effectively and new changes have not introduced any new bugs within the application. Therefore, it is an essential element of software quality assurance. Along with unit and integration testing, it identifies defects early and helps to reduce the cost of resolving and fixing issues early. The process also creates confidence that an application is ready for deployment

4. WHEN TO DO REGRESSION TESTING? It should be taken up when: – New functionality comes in: Whenever the developers introduce new code, they don’t fully concentrate on its compatibility with the existing code and hence the software regression testing should be taken up to find any possible issues within software. – Changes in Existing functionality: Sometimes within the agile software development process, developers revise the existing functionality and exclude/edit some features based on the requirements. In such cases, the regression and functionality testing process checks whether the new changes have caused any damage to the rest of the functionality. – New Integrations take place with other products: At times of integration, regression testing assures that the software product performs flawlessly even after integration with another product.

5. WHAT IS REGRESSION TESTING IN AGILE? In an agile environment, software testing needs to be taken up with each sprint and the quality assurance testers should make sure that new changes do not affect the existing functionality of the application. Moreover, in agile scenarios with iterative changes, there are more frequent build cycles and continuous changes are added to the application. This sort of frequent change makes software regression testing mandatory in agile. Thus, for successful regression tests in agile, the team should follow an effective strategy and suit from the onset of software product development. The QA teams should continue developing the test scripts alongside each development sprint to ensure effective results.

6. WHAT SHOULD BE A REGRESSION TESTING STRATEGY? Define and Identify Needs and Components of Initial Phase: It is the first and most crucial step to start this process, wherein regression tests should ideally be initiated as soon as changes occur within the software. Define Testing Requirements: This is the second phase wherein defining of the right test cases for a project should be taken up. Define Entry & Exit Criteria: There is an effective need to define the entry and exit points such that the test objectives are in sync with the project requirements.

7. WHAT ARE THE IMPORTANT REGRESSION TESTING TOOLS?

8. CONCLUSION: Thus, Regression testing is a reliable way to ensure that the application remains defect-free even after frequent changes. It also ensures that the recent changes have not broken any existing functionality. This process should be performed to find bugs in a new software release and ensures the previous bugs are fixed. www.testingxperts.com/

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