Work of the software testing company is done after bug fixing. For the proper functioning of the product, the product needs to be checked once more. This can be done with the help of Regression Testing. Regression Testing is a software testing which involves checking the adverse effect of existing features with the change of recent code or program and Testscenario is best example of it. This testing is to make sure there will be no side effects of code changes on the existing functionalities.
Regression testing will ensure that the old code is still working fine even after adding the new code. It is required when there is a performance issue fix, defect fixing, adding a new feature to the software, change in the code or requirements. It is a black-box testing technique which involves re-execution of tests.
Types of Regression Tests:
This normal Regression Test will be performed for ensuring there will be no broken parts of the application with the recent code changes.
Final Regression Tests:
This is to be performed for validating the build which hasn’t changed over some time.This build will be shipped or deployed to the customer.
How to Perform Regression Testing:
Software maintenance needs repeated error corrections, enhancements, deletion of existing features and optimisation. Some times these modifications may lead to the incorrect working of the system. Thus, Regression testing comes into play which can be performed with the following techniques
This is the most expensive technique because it needs huge resources and time. It is the method of regression testing which involves re-execution of a suite of existing test bucket.
Regression Test Selection:
It is better to conduct the test on the selected part than to re-execute the entire suite. Test cases are categorized into obsolete test cases and reusable test cases. Obsolete test cases cannot be used in the following cycles. Reusable test cases can be used in the success of regression cycles.
Tools of Regression Testing:
The cost of regression testing will escalate if there will be a frequent change of the software. There will be an increase in the test execution time with manual execution test cases. In this case, the smart choice will be the automation of regression test cases. The following tools will be used for both regression and functional testing:
Rational Functional Tester:
It is a java tool developed by IBM. This rational functional tester is used for the automation of test cases of software applications.
Quick Test Professional:
This is designed to automate the regressional and functional test cases. It is a keyword-based and data-driven based tool. This is based on VBScript language.
It will be used for browser-based regression testing. It is used for web application automation and is a software tool.
It is all-in-one automated regression testing for web, desktop and mobile applications with integrated Selenium WebDriver
Advantages of Regression Testing:
Regression Testing will ensure that the earlier bug won’t re-emerge. This will surely improve the quality of the product. This can be done manually and also tools will be available for automation. This will notify the side-effects caused due to enhancement or fixation of the application or module.