Regression Testing Guide 2020-21



Organizations all across the globe are striving hard to achieve quality software that satisfies their customers. But due to ever-changing customer demands and customer preferences, organizations add new features and upgrade their apps. But these frequent changes and upgrades make the application more prone to bugs and errors. Regression testing is an effective way to deal with such complexities.

What is regression testing?

Regression testing is an important software testing type in which functional and non-functional tests are re-executed to ensure that existing functionalities of the system remain unaffected and works fine whenever any change is made to the software. It checks whether the previously existing functionalities are working fine or not and identifies bugs in the software if any.

When should regression testing be done?

• Regression testing should usually be performed whenever any new feature is developed or if any existing feature is improved
• Whenever UI updates are made regression testing should be done
• Regression tests should be performed whenever any small or large change is made to the software that can affect the software functionality
• Whenever there are change requirements regression test should be taken up
• Whenever any defect is fixed or a performance issue is fixed
• Whenever the change in environment is made e.g. updating database from MySQL to Oracle.
• When new integration take place with other products regression test should be executed

What are the types of regression testing?

Below mentioned are 7 types of regression tests that usually are performed by testers.

1. Corrective Regression Testing
2. Retest-all Regression Testing
3. Selective Regression Testing
4. Progressive Regression Testing
5. Complete Regression Testing
6. Partial Regression Testing
7. Unit Regression Testing

What should be a regression test strategy?

1. Define and identify needs and components of initial phase: To begin with the regression test, careful plan the test and identify the needs and components of the regression test.

2. Define the test cases: In this step, define the right test cases that should be taken up. A collaborative approach between stakeholders, developers, and software engineers is needed to reach a common consensus to decide upon the test cases that can be reused each time a change is made to the application.

3. Define the entry and exit criteria: To ensure sync between test objectives and project requirements it is essential to define the entry and exit criteria.

How to conduct effective regression testing?

To achieve effective regression testing there are two ways; manual regression testing or automated regression testing.

Manual regression testing: Manual regression testing is performed by manual testers, who initially draft the test cases and then execute them.

Automated regression testing: This type of testing involves the use of automation tools to perform the regression test. Automation regression test saves up time and removes human prone errors.

What are some important regression testing tools?

• Ranorex studio
• Katalon studio
• Testsigma
• TestComplete
• Watir
• IBM Rational Functional Tester
• Selenium
• Silktest
• ActiWate
• vTest
• QTP
• WebKing

Today, every organization wants its software to be defect-free but frequent changes and upgrades make the software more prone to bugs. Regression testing is an effective way to ensure that software remains defect-free even after frequent changes and updates.

Leverage regression testing services from a next-gen QA and software testing services provider to achieve quality software that delivers seamless user experience.

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