Modern applications have changed a lot compared to their contemporary counterparts. Previously the apps were basic and simple with an aim to serve one purpose at a time. However, modern applications can fulfill multiple demands and handle huge traffic loads. To perform such a process, these applications need to have access to multiple elements simultaneously. To verify the stability of such a complex infrastructure, the application developers need to perform extensive test cycles where they have to verify the functioning of each aspect present in the app. Modern application testing processes like parallel regression testing contribute a lot towards this goal. Regression testing is a repetitive process that verifies the performance of all the new and existing elements present in a web application.
With this article, we can understand how application developers can improve test execution speeds for large-scale applications. We’ll also understand some of the most important features of parallel regression testing that help to revolutionize the application testing lifecycle.
The Concept of Parallel Testing and Regression Testing
As we already mentioned earlier, modern applications consist of thousands of different elements. While using manual testing, the application developers would take several months to individually verify the functioning of all these elements. However, with the integration of parallel testing, it is possible to complete this process within a few days. This is because parallel testing can initiate and execute multiple testing instances at the same time. It is also possible to initiate instances on different testing configurations and machines simultaneously. To achieve such a goal, parallel testing uses the concept of a hub that is connected to several nodes. So, whenever a test case is assigned to the framework, it will automatically redirect it to the consecutive target element for the execution of the testing process.
On the other hand, regression testing is the process of ensuring that any new addition to the application does not harm the functioning of all the existing elements in the application. in simple terms, regression testing verifies the proper coordination between all the new and old elements present in an application. So, app development companies must run regression testing after every small or major change in the primary database of the application. With the help of regression testing, it is also possible to ensure that at least the basic functions of the application are always available to the end users. This is a step towards ensuring optimal end-user satisfaction to build a positive image for the company.
Integration of Automation in Modern Testing Cycle
Based on the previous discussion, we can summarize that parallel testing is impossible to conduct with a manual test bench, and regression testing is a repetitive process that needs to be conducted frequently. So, both of these test cases can massively benefit from the introduction of automated testing. Automation testing is the process of eliminating human involvement in the testing cycle. Instead, the system will use a text file that will supply all the required data and statistics to emulate human interactions. Based on multiple such interactions, the system can generate A detailed test report showing the usability, user interactivity, and functionality of the application. Based on this report, developers can justify whether the app is ready for the end users.
Automation testing also allows the modification of test data to customize the test reports. It is also possible to reuse a huge section of the existing test data in future app development projects. However, test automation requires a significant investment during the initial years. This investment will cater to the requirements for multiple plugins, libraries, and dependencies for the proper execution of automation testing practices. So, companies must have enough revenue resources and investments to justify this transition.
Key Aspects of Parallel Regression Testing for Testing Large-Scale Applications
Certain aspects of parallel regression testing can massively boost testing on large-scale applications. This knowledge can help app developers and testers to properly customize their testing experience. So, for the ease of the new developers and testers, we have listed them below:
- The first step involves the partitioning of test suites. It is a process that divides the entire test suite into smaller subsets that are also known as test partitions. The testers must remember that all these partitions should be independent of each other. This means that the execution of any part should not affect the execution of all the other parts.
- After the developers have partitioned the test suite, each subset is executed independently on different machines, processor codes, and environments simultaneously. The application testers can easily perform this process with the help of a parallel execution framework or tool.
- During the process of parallel test execution, resource management is one of the most crucial parts of a successful process. In this step, developers and testers must ensure proper resource allocation and load balancing on all available processors and machines optimally.
- The final step in this process is to aggregate the test results that will be generated from all the test partitions. After the aggregation, the application developers will be able to opt in for the final regression test outcome. These results will also determine the final state of the application when all the elements are combined. Based on the bugs and errors detected, the developers can also proceed toward the debugging process.
Based on the process of parallel regression testing, let us understand some of the most important benefits of this process. They are as follows:
- Parallel regression testing significantly boosts the test execution process compared to the contemporary application development and testing lifecycle. This is because it can run multiple test instances at the same time.
- With the help of parallel regression testing, app testers can highly increase the test coverage. This means that the app companies can ensure that all the elements are working properly on multiple devices, including outdated ones.
- The regressions can help the developers to address issues early in the development process, which can reduce the bug fixing costs and time. This process will also help to bring down the overall application delivery time.
- Using a parallel regression testing process, the application developers can completely use the available testing tools and resources. It also helps to control the use of the hardware that is being involved by the app development company.
However, regarding the use of parallel regression testing, there are certain drawbacks that the application developers and testers must know. It will help them to ensure that they do not come across any unwanted surprises during the test execution process:
- It can be very challenging to verify the test partitions are not dependent on each other. This is because mismanaged tests that rely on specific states or data sets can cause errors in the test reports.
- The execution of parallel regression testing can be very complex when the app developers are working with certain test cases that share multiple resources or data. In such a scenario, app testers and developers will find it very hard to keep track of all the testing resources and tools used by the system for regression testing and parallel testing.
- The overall process of setting up and maintaining a parallel testing infrastructure and test environment can introduce overhead and complexity to the application development and testing infrastructure. Moreover, when new testers and developers are transitioning to this process, they have to go through a significantly long learning curve.
- After the execution of a parallel regression test case, the process of identifying the root cause can be challenging compared to a sequential testing setup. So, the app developers and testers will have to invest a significantly higher amount of time in the debugging process, which can slow down the final production of the application.
Despite the drawbacks of parallel testing infrastructure, app developers must remember that it is one of the most important techniques while working on large-scale applications, especially those that rely on delivery environments and continuous integration. In such a process, parallel test execution can help provide faster feedback cycles for maintaining the quality of the application. Parallel regression testing is also useful when small companies are restricted by their available infrastructure or hardware capabilities.
Addition of Automation Tools and Platforms with Parallel Regression Testing
The concept of parallel regression testing and integration of test automation can be confusing for new developers and testers. However, there are thousands of tools easily available in the market that can massively simplify this process. Moreover, with certain tools like cloud-based solutions, developers can integrate additional features in the test bench. For instance, cloud platforms eliminate the headache and expense of a device lab for the test execution process. Instead, it can run all the tests on a remote server through the Internet. The benefit of such a process is that it provides similar test reports, eliminates geolocation barriers, and grants access to legacy devices.
You can leverage some advanced testing tools such as LambdaTest. It is an automated cloud-based digital experience testing platform for modern web applications. This platform can run automation test cases from all the well-known test suites and frameworks like Selenium, Playwright, and Cypress. While the testers are working with the Selenium test files, they can run them on more than 3000 modern simultaneous browsers. LambdaTest is also suitable for testing web pages that use local hosts and are used for a company’s internal operations. It uses parallel test execution to boost the efficiency of the test cases massively.
Finally, the combination of thousands of emulation software and hundreds of real devices ensures the dependability and accuracy of the test reports.
The Conclusion
With this article, we focused on how parallel regression testing can boost test execution on complex and large-scale applications. We also understood the importance of automation testing in the modern application development lifecycle. So, we would suggest the companies not only transition to automation testing but also constantly update their knowledge about this revolutionary testing process. It will be also a good practice to conduct frequent market surveys to gather adequate information about the requirements of the target audience. It is also very important to choose the correct automation testing tools that can complement the preferences of the developer and the development project. Finally, companies should conduct seminars and awareness regarding healthy practices while working with automated parallel regression testing.