What is Regression Testing? Explained with Test Cases, Tools, and Methods
Mia managed a popular shopping app where customers could browse products, add to a cart, and make purchases. One day, her team launched a new feature a “wishlist” option. Everyone was excited until customers started reporting strange bugs:
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Add to Cart button stopped working.
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Payment processing showed errors.
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Product images disappeared.
Mia was puzzled. The wishlist feature seemed fine, so why were other parts of the app breaking down?
Her lead developer, Ben, suggested Regression Testing. He explained it as double-checking the entire app to make sure the new changes hadn’t messed up existing features.
With regression test cases, they tested every critical function. Using automated tools like Selenium and TestComplete, they caught hidden bugs and fixed them before users noticed them. Finally, the app ran smoothly again, and Mia learned that Regression Testing was like having a safety net.
In this blog, we will shed light on the concept of Regression testing. We will discuss regression testing tools, regression testing test cases, and regression testing methods.
What is Regression Testing?
Regression Testing is a form of testing whereby you ascertain that the variations made in the codebase do not affect the existing software functionality. The changes in the code could be adding new features, fixing bugs, or updating a current feature.
Simply we can say that, this term is rerunning past passes of regression test cases against the new version to ensure that the app is functioning properly. In addition, regression testing is a set of tests, but not a single one, performed every time you add a new code.
When You Should Perform Regression Testing?
Regression testing is carried out when:
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New requirements are added to old features.
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New features or functionalities are introduced.
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The code base is fixed to address defects.
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The source code is optimized to enhance performance.
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New patch fixes are in place.
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A new version of the software has been released.
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Changes to the UI are made.
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Configuration changes occur.
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A new third-party system is integrated.
Pros and Cons of Regression Testing Methods
Pros
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Ensures that any change in code doesn't adversely affect other functionality.
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Confirms that issues that were fixed earlier don't resurface.
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Assures that risk mitigation strategies are practical in regression test cases.
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Easier to start learning right up to understanding and analysis.
Cons
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Without automation, regression tests can consume a lot of time.
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Requires retesting even for minor code changes.
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Cyclicality might slow down an agile sprint instead of helping it.
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There is a risk of creating overly complex regression test cases.
Different Types of Regression Testing
1. Corrective
Corrective regression testing refers to tests applied when there has been no change in the source code of the application. With corrective regression, you should check to see whether the current system is functioning properly, so instead of writing new test cases, the existing test cases and functionalities are tested.
2. Progressive
Progressive testing is the perfect fit for changing testing requirements and coming up with new test cases. Commonly, this type of testing is done when a new component is being incorporated into the system. It helps in ensuring that these changes do not negatively impact the existing components.
3. Selective
As the name suggests, in selective testing, the test coverage is limited to a selected group of pre-existing test cases. Thus, you are only going to test certain components instead of performing retests of the entire system.
4. Partial
Partial testing takes place when it is wanted to see what happens to the old components when a new component is being introduced. Partial testing can be thought of as that type that verifies whether adding new functionality works or breaks any of the old functionality. This type is about analyzing old versus new functionality together.
5. Complete
Complete testing means testing the entire system at once. It is similar to acceptance testing to check whether the user experience gets compromised due to adding one or multiple modules. Complete testing is done right before the final release of the product.
6. Retest-All
The essence of this testing is to execute all the test cases according to a testing suite to confirm that there are no bugs in the application after a source code change. Compared to other types, this requires a lot of time and effort from the QA side.
Important Regression Testing Tools
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Selenium
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TestComplete
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Appium
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Katalon Studio
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Ranorex
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testRigor
Why Choose Tangent Technologies for Regression Testing?
Tangent Technologies is a trusted provider of regression testing services. We prioritize delivering flawless and error-free software performance. Our team of IT experts uses advanced regression testing tools and regression testing methods. You will get comprehensive test coverage for your software with us.
Contact Tangent Technologies now.
Conclusion
"Quality is never an accident. it is always the result of intelligent effort." John Ruskin
Quality assurance is one of the most needed aspects in the domain of web development. Experts are hired in companies and software efficiency is checked. Nearly every tech house has a dedicated quality assurance department. Similarly, regression testing is a part of software quality assurance. Regression testing plays a significant role in improving the quality and user experience of the product. The proper regression testing tools would help identify all noted defects properly and remove them as early as possible in the pipeline.
FAQ’s
1. What tools are used for regression testing?
1. Selenium
2. Appium
3. Watir
4. Testlio
2. What are common regression testing methods?
There are 4 strategies:
1. Regression Test Selection,
2. Prioritization of Test Cases,
3. Retest All
4. Hybrid
3. Is regression testing part of QA?
Yes, regression testing is a type of QA software testing that ensures changes or updates to software do not impact existing features.
4. What is a regression checklist?
A Regression Testing Checklist is used to verify that all changes made to an application are thoroughly tested to avoid new bugs.
5. How Should One Choose Test Cases For Regression According To Priority?
Follow are a few criteria to choose it.
1. Complex regression Test Cases
2. Regression Test Cases That Frequently Produce Bugs.
3. Cover Field Validation Test Cases.
4. Regression Test Cases That Cover Mission-Critical Functions.
