Introduction about Regression testing

Regression Testing:

When an application or a website is developed, a test engineer checks for any changes impacting the unchanged feature or outdated features that are already tested and working properly, it is known as regression testing.

If the developer has added a new feature to the product, the test engineers will have to test the new functionality, and also test the old features that have already been tested (eg - additions, modifications, deletions or defect fixes )

The test engineer also needs to update the test cases, testing the modified features of the product according to functionality (addition, modification, deletion or defect determination).

Types of Regression Testing

There are three different types of regression testing, which every test engineer follow:

Unit Regression Testing

Regional Regression Testing

Full Regression Testing

Unit regression testing:

Testing unchanged components or features as well as fixed bugs is called unit regression testing. A single module is tested to perform regression testing.

Example: The build has to be sent by the developer if TE reports the bug to the developer, the developer fixes the bug or adds a new feature as well. So TE will have to test the build again.

Regional regression testing:

The unchanged field test used to test whether a change in one area has an effect on another area is called a regional regression test.

• Testing new features
• Testing modified features
• Re-testing bugs
• Checking the impact areas which are interlinked with each other in a chain format

Example: User sign in or sign up features are interconnected, such as when a user wants to sign up a new account in an application, a bug is found in the text of the email field. This bug causes the user to not receive the verification email. The ID will, thus, not be verified, and the user will not be able to enter the application.

Full regression testing:

The testing of transformations and all the remaining attributes are called complete regression tests.

• Whenever the root feature gets changed. For example, as JVM is the root of Java, for any changes made in JVM, the entire Java application is tested
  

Disadvantages:-

1. Regression testing is manually done again and again, which is more cumbersome.

2. The test engineer has to test the build.

3. The efficiency of the application will drop.

4. Test engineer has to update the test cases again and again, making it complicated.

5. Manual testing on features is time-consuming

Regression testing is important to improve the overall quality of the product and user experience. Correct regression testing tools can significantly identify all the embossed defects and eliminate them early in the pipeline. We are a Java Development Company with a focus on transforming the way enterprises work with technology. Our development services include extensive testing (automation and regression) with the help of tools such as Selenium and QTP. Our developers have a decade worth experience in building and testing ERP software for enterprises of all sizes. Get in touch with our experts to avail our custom development and software testing services.