What is regression testing? Simply put, regression testing is a type of software testing that verifies whether a previously developed and tested software still performs accurately after it has been changed or updated. In other words, it is a process of ensuring that no new bugs or defects have been introduced in the code due to the changes made.

While this may seem like a tedious and time-consuming task, regression testing is actually a very important part of the software development process. By running tests after making changes to the code, developers can be confident that their changes have not broken the existing functionality of the software. Regression testing can be performed manually or through automation. In this blog post, we will explore both options and provide guidelines on how to properly perform regression testing.

What Is Regression Testing?

In software testing, regression testing is defined as a type of software testing that seeks to uncover new software bugs, or regressions, in existing functionality. A regression is typically introduced when code changes are made to fix defects or add new features.

Regression testing helps ensure that these code changes have not caused unintended side effects and that the software still meets its requirements. It is usually done after functional testing and before release to production.

There are two main approaches to regression testing: retesting and re-executing. In retesting, the tester runs the same test cases that were run previously (either manually or with automation) on the new build to see if they still pass. In re-executing, the tester runs automated test cases against the new build, regardless of whether they passed or failed against the previous build.

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The goal of regression testing is to confirm that a change has not introduced new bugs and that the software still works as expected. It is an important part of any software development process and should be given sufficient time and resources.

What Is the Regression Testing Process?

Regression testing is the process of verifying that a software application still performs correctly after it has been modified or updated. This type of testing is usually done after changes have been made to the code, such as bug fixes or new features being added.

The first step in regression testing is to create a test plan. This plan will outline what needs to be tested and how it will be done. Once the plan is created, the actual testing can begin. The goal of regression testing is to ensure that no new bugs have been introduced and that all existing functionality still works as expected.

To do this, testers will execute various tests against the software. These tests can be manual or automated. Automated tests are often used for regression testing because they can be run quickly and easily repeated. After the tests have been executed, the results need to be analyzed to see if any issues were found.

If any problems are discovered, they will need to be fixed before the software can be released. Once all the issues have been resolved, another round of regression testing will need to be conducted to confirm that everything is now working as expected.

How Do Regression Tests Effectively?

Regression testing is an important process that helps ensure the quality of your software application. When done effectively, regression testing can help identify and fix errors, improve software stability, and prevent new bugs from being introduced.

There are a few key things to keep in mind when performing regression testing:

• Define what needs to be tested

Before starting the regression testing process, it’s important to first define what needs to be tested. This will help ensure that all relevant areas of the application are covered and that no important details are overlooked.

• Create a test plan

Once you know what needs to be tested, you can begin creating a test plan. This should include a list of all test cases that need to be executed, as well as the expected results for each one.

• Execute the tests

After the test plan is created, it’s time to start executing the tests. This involves running each test case and verifying that the actual results match the expected results. Any discrepancies should be investigated and addressed accordingly. If possible, automate the execution of regression tests to save time and effort. But even if automated testing is not possible or practical, manual execution of tests can still be effective if done carefully and thoroughly.

Recommended to Read – Test Plan Vs Test Strategy

Why Do We Need to Prioritize Test Cases for Regression Testing?

As development cycles get shorter and shorter, it’s important to prioritize which test cases need to be run during regression testing in order to save time and resources. By focusing on the most important test cases, you can ensure that the majority of bugs are uncovered while still being able to deliver software quickly.

There are a few different factors that should be considered when prioritizing test cases for regression testing. The first is the impact of a potential bug. If a bug would cause serious problems for users, it’s more important to catch it early on.

The second is the likelihood of a bug being introduced. If a certain piece of code is known to be unstable, then test cases related to that code should be given higher priority. Finally, you’ll also want to consider how easy it is to reproduce a bug. If a bug can only be reproduced under specific conditions, it may not be worth spending time trying to track it down.

By taking all of these factors into consideration, you can develop a prioritized list of test cases that will help ensure that the most important bugs are found during regression testing.

What Are the Criteria for Regression Testing?

There are many different ways to regression test, but some common regression testing criteria include:

• Has a functionality been changed?
• Are there new features or modifications?
• What kinds of changes have been made?
• To what extent do the changes impact the system?
• What is the risk involved in not regression testing?
• What is the cost of regression testing?
• What is the schedule for regression testing?

Conclusion

We hope this guide has given you a better understanding of regression testing and how it can be used to improve the quality of your software. Using regression testing, you can catch bugs early on in the development process and prevent them from becoming larger issues later on. By following these guidelines and implementing regression testing into your development process, you can ensure that your software is of the highest quality.

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