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What Is Regression Testing: Examples, Tools and Best Practices

What Is Regression Testing: Examples, Tools and Best Practices

If you’re in the world of ecommerce development, you’ve likely come across the term “Regression Testing.” But what exactly does it entail, and how can it benefit your project or business? In this comprehensive guide, we explore the fundamentals of Regression Testing, practical examples, tools as well as outline best practices tailored to ecommerce testing strategies.


Understanding Regression Testing

What is Regression Testing?

As an application or a software is updated, emergence of new faults and/or re-emergence of old faults is quite common. Regression testing is the process of ensuring that new code changes  have not adversely affected existing functionalities.

The primary goal is to detect and address unintended side effects or bugs introduced during the implementation of new features or modifications. Regression testing helps maintain software stability by verifying that the overall system still behaves correctly after each code change.

Essentially, regression testing provides a way to perform a periodic health check of your ecommerce application. Its repetitive nature makes it an ideal candidate for test automation, saving time and enhancing efficiency for testing teams.

Examples of Regression Testing

Regression testing is a method rather than a specific tool. Any test developed during the initial launch of a feature and re-executed in subsequent releases qualifies as a regression test. Regression tests can be further categorized by attribute (visual, functional, performance, security), application layer (UI and API), device type (web, mobile, desktop), and granularity (end-to-end, integration, unit tests). 

Consider an example of an online store that wants to implement a new feature allowing users to add items to their shopping cart directly from the product listing page, without having to go to the individual product page. Regression testing in this scenario would  involve:

Previous Functionality: Confirming that existing functionalities such as product search, account login, payment processing, and existing add-to-cart methods still work as expected after the update.

Cart Integration: Verifying if the items are added accurately, and the cart total is updated accordingly.

Cross-Browser and Device Testing: Ensuring that the changes don’t adversely affect the user experience on different browsers (like Chrome, Firefox, Safari) and devices (desktop, tablet, mobile).

Performance Testing: Checking the website’s performance to ensure that the update hasn’t negatively impacted page load times or overall responsiveness.

Security: Verifying that the update hasn’t introduced any security vulnerabilities, especially in the payment processing and user authentication areas. 

By conducting regression testing in this context, the online store can ensure that the newly added functionality doesn’t break any existing features and that the overall platform continues to operate smoothly for users.

Why Regression Testing Matters

Besides ensuring the reliability of an ecommerce application and preventing regressions, regression testing has a number of benefits across the business:

Detects Unintended Side Effects 

Changes made in one part of the code can sometimes unintentionally impact other areas. Regression testing helps identify and address these unintended side effects, ensuring that the overall system remains coherent.

Saves Time and Resources 

By automating regression tests, repetitive tasks can be performed quickly and accurately. This not only saves time but also allows developers to focus on implementing new features, knowing that the existing functionalities are continuously validated.

Enhances Confidence in Releases 

Regression testing provides confidence to development and QA teams that the changes won’t adversely affect the overall ecommerce system. This confidence is crucial in ensuring a smooth user experience and preventing potential business disruptions.

Supports Agile Development 

In agile development methodologies where frequent updates and iterations are common, regression testing becomes even more essential. It facilitates continuous integration and delivery by quickly validating changes and preventing a buildup of broken code near production dates.

How To Start Regression Testing (And Tools)

Embarking on regression testing involves a strategic approach to ensure the effectiveness and efficiency of your testing efforts. Here’s a step-by-step guide on how to start regression testing for your next project, along with key considerations for success:

Step 1: Identify Source Code Changes

Begin by detecting the impact and risk of the latest code changes. Conduct thorough code review sessions to pinpoint the components or modules that have been modified, leveraging version control systems like Git to compare differences between old and new code.

Step 2: Prioritize Impacted Areas and Test Cases

Collaborate with your team to prioritize changes that require extensive testing. Focus on modifications affecting core features or significantly altering your ecommerce functionalities. This step allows you to create the most accurate test cases and is crucial for optimizing testing efforts and resources.

Step 3: Categorize Regression Test Cases

Dive into the plan formulated in step 3 and categorize test cases based on factors like manual vs. automated testing, critical vs. non-critical features, and testing types. Utilize a centralized testing system to simplify test management across various types.

Step 4: Test Environment Preparation

Maintain stable test environments for frequent regression testing. Consider leveraging cloud environments for scalability and cost-effectiveness. Evaluate the option of on-demand cloud testing environments to streamline the setup process.

Step 5: Find an Automation Tool for Regression Testing

Automation plays a pivotal role in efficient regression testing. Look for a robust automation tool that aligns with your testing needs. Valido App offers comprehensive solutions with features tailored for ecommerce testing. Its codeless test automation, comprehensive testing suite, and AI capabilities make it a valuable asset for regression testing.

Step 6: Schedule and Execute Tests

With all preparations in place, schedule and execute test cases based on the plan. Time-based test execution allows for better quality control over the constant changes in your application. Consider tools like Valido App to streamline and enhance the execution process across multiple locations and devices.

Step 7: Measure Regression Testing Success

After executing tests, analyze test reports to gain insights into testing efficiency. Quantify testing performance for data-driven decisions, and identify areas for improvement. Tools like Valido App provide detailed analytics and AI-powered recommendations, allowing you to make informed decisions for your business.

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Regression Testing Best Practices

Here are some key regression testing best practices to enhance the efficiency and reliability of your testing efforts:

Implement a Regression Framework from the Beginning

Lay the foundation for successful regression testing by developing a regression framework that can be applied to your current project and future ones. A well-structured framework establishes a systematic approach to regression testing, enabling you to set expectations for stakeholders.

Regularly Reassess Developers’ and Users’ Needs

Keep your regression testing strategy aligned with the evolving needs of both developers and users. Regularly reassess their requirements and update test designs accordingly. This proactive approach ensures that your regression tests stay relevant and effective throughout the project’s lifecycle.

Analyze User Experience for Focused Testing

Dive into the user experience on your web application to identify and prioritize highly used functionalities. Focus your test designs on these critical areas to ensure a thorough evaluation of the aspects that matter most to users – this cannot be emphasized more. Prioritizing testing based on user experience enhances the overall quality of your application.

Add New Tests for Added Functionality

As your ecommerce application evolves with the addition of new functionality, expand your test suite accordingly. Integrate new tests to cover the testing needs associated with the introduced features. This proactive approach ensures that each release is thoroughly tested, preventing potential regressions.

Leverage Automation for Efficiency

Embrace automation to streamline and expedite your regression testing process. Automation tools, such as Valido App, offer codeless test automation, enabling quick and easy creation of dynamic tests. Automation enhances testing efficiency, allowing you to focus on more complex testing scenarios.

Establish Clear Entry and Exit Points

Define clear entry and exit points for your regression testing process. Clearly outline the steps to be followed before initiating tests and the criteria for concluding the testing phase. This ensures an organized and streamlined regression testing workflow.

Wrapping Things Up

Whether your focus is on accelerating releases or a better user experience for your ecommerce, regression testing should be a vital component of your overall Quality Assurance (QA) strategy. Regression testing enables your business to stay proactive in ensuring the quality and reliability of your ecommerce as it scales to meet the demands of your business.

Nevertheless, starting your regression testing journey requires careful planning along with the right tools and processes. Incorporating the best practices mentioned in the article above also enables you to adopt a proactive and efficient approach to regression testing. By leveraging intelligent test automation tools like Valido App, you can enhance the accuracy, speed, and overall effectiveness of your regression testing process. 

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