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What Is Parallel Testing In Selenium?

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2023-09-08

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As enterprises move away from manual testing and toward Selenium test automation, testing solutions have grown more scalable than ever. However, most businesses are still grappling with the scalability required to run several tests in parallel. Many companies still rely on sequential testing to provide quality assurance, which takes time, resources, and effort.


Some people are hesitant to utilize Selenium for parallel testing. In contrast, others are unlikely to do so because their web application is small enough to fit within the current release windows.

The main reason for the Selenium Grid’s existence is to allow testers to test cases in parallel. Parallel testing is a semi-automated testing method that combines cloud and virtualization technologies to simultaneously conduct tests on many settings. The goal of this approach is to get around time and money constraints while yet maintaining excellent quality.


Parallel testing cuts down on execution time and effort, resulting in a shorter time to market. It’s beneficial for cross-browser, compatibility, localization, and internalization testing. For example, we can run two versions of the software simultaneously in a case where we have two versions of software accessible and need to check their stability and compatibility. Using a Selenium grid, the main goal of running tests in parallel is to decrease the prevalent time and effort of automated browser testing while ensuring a high-quality product.


The parallel testing method can evaluate a single application or several platforms’ components. Any program or subcomponent, such as operating systems, browsers, or any combination, can be assessed on a different machine.


While parallel testing can apply to individual hardware units, it is more usually associated with using distinct virtual machines on the cloud. Whether your testing devices are physical or virtual, parallel testing allows you to perform more tests than sequential testing allows. The parallel testing method can evaluate a single application or several platforms’ components. Any program or subcomponent, such as operating systems, browsers, or any combination, can be assessed on a different machine.

While parallel testing can apply to individual hardware units, it is more usually associated with using distinct virtual machines on the cloud. Whether your testing devices are physical or virtual, parallel testing allows you to perform more tests than sequential testing allows.

Benefits of parallel testing in Selenium

Speed


You don’t require tens or hundreds of extra hours or more machines than you already have; all you need are the necessary test scripts.


Affordability


Building and maintaining an internal testing infrastructure is substantially more expensive than leasing test time on a cloud provider.


Compatibilities


Due to the limitations of sequential testing, you can only test the most likely situations in most cases. You can try any combinations valuable to users with unlimited parallel testing.


Up-to-date


When you rely on cloud technology, you’re putting yourself at a disadvantage. It is current and up to date. You’ll always use the most recent versions of applications and software if you rely on cloud technologies.


Results-driven


More scenarios may be tested in less time, resulting in more meaningful data for improvement.


Reduce testing time


Sequential testing provides extensive automated browser testing of a web application, but it takes longer. On the other hand, parallel testing can minimize total testing time by executing tests on numerous machines at the same time.


Wide range of tests


Parallel testing is a speedier method than sequential testing because it gives testers a more excellent range of test compatibility in a shorter period.


Optimize continuous integration and delivery


Functional tests must be run frequently and quickly to achieve continuous integration and delivery. Furthermore, running tests in parallel saves time and allows you to generate extensive test data reports.


Parallel testing is a logical extension that applies to all IT industries. Similar testing will likely drastically revolutionize testing by focusing on practicality, convenience, cost, speed, and scale, resulting in ongoing advancements in software development.

Uses of Parallel Testing

Parallel testing can be used for a variety of purposes. The following are some circumstances that might be the best fit:


As an outcome, web developers are responsible for abstracting browser differences. Cross-browser compatibility testing aids with this by identifying browser-specific compatibility issues,

  • Cross-browser testing
  • Compatibility testing
  • Evaluating different versions
  • Localization and internationalization are being tested.
  • Reviewing the language and confirming the context
  • Getting the job done
  • Configuring the environment for testing

Q1. When Should You Use Selenium Parallel Testing?

Now that you understand how Selenium parallel testing may help with continuous integration and delivery of applications, it’s time to figure out when and how you should use it in your SDLC. For the following scenarios, parallel testing can be used:

  • There is even a smidgeon of doubt about the functionality of new programs, especially if the updated and previous versions of the software are nearly identical.
  • When it comes to banking-related financial applications, most of them are identical. Parallel testing with Selenium can be used to verify the application’s older and newer versions.
  • When transferring legacy data from one system to another or when a corporation switches from one system to another.
  • When you require to test an app across many browsers, operating systems, and devices using automated browser testing.

Conclusion

Selenium parallel testing is a great way to deploy online applications quickly without sacrificing quality, especially when it comes to automated cross-browser testing. You can reduce QA costs, run test cases with high accuracy, optimize continuous integration/delivery processes, and constantly improve test scripts by running Selenium test automation in parallel.

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