What is Non-Functional Testing? – Complete Guide

Non-functional Testing, a type of Black-Box testing, is done to test all non-functional components of any software application. This includes compatibility, performance, usability, accessibility, and security, among others. It is intended to test an application’s readiness for non-functional testing issues that are never tested or handled by Functional Testing.

In this blog post, we will focus mainly on discussing the objectives of performing Non-functional testing, different parameters involved in performing Non-functional testing, tools used to perform Non-functional testing and the advantages as well as  disadvantages of performing Non-functional testing in a detailed and comprehensive manner.

Let’s Begin! 

Objectives of Non-functional Testing

Following are some of the objectives in focus of every test engineers while performing non functional testing of any software application: –

• Non-Functional Testing’s primary objective is to test the reading speed of the software system as per non-functional parameters.

• Non-Functional Testing is performed to increase the performance, usability, accessibility, reliability and efficiency of the software product or application.

• Non-Functional Testing is performed to reduce the production risk related to all non-functional aspects of the software product or application.

• Non-Functional Testing is performed to reduce the cost related with all non-functional aspects of the software product or application.

• Non-Functional Testing is performed to optimize the installation, execution and monitoring way of the software product or application.

• Non-Functional Testing is performed to improve and enhance knowledge of the product behavior and technologies in use.

Parameters of Non-functional Testing

Following are some of the major parameters of non functional testing: –

• Compatibility – This parameter of non-functional testing is used to ensure software product or application compatible on other software programs or systems via performing compatibility testing.

• Performance – This parameter of non-functional testing is used to ensure software product or application meets specific performance goals via performing performance testing.

• Usability – This parameter of non-functional testing is used to ensure software product or application easy to use via performing usability testing.

• Accessibility – This parameter of non-functional testing is used to ensure software product or application meets a specific compliance standard, such as HIIPA or Sarbanes-Oxley via performing compliance testing.

• Security – This parameter of non-functional testing is used to ensure software product or application secure from unauthorized access or attacks from both internal and external sources via performing security testing.

Non-functional Testing Tools

Following are some of the best and popularly used tools in performing non functional testing: –

• JMeter – It is one of the best and most popularly used tool to perform non-functional testing of any software product or application. The main purpose of using this tool is to measure and analyse the performance, compatibility and reliability of the software product or application.

• Forecast – It is yet another popularly used tool to perform non-functional testing of any software product or application. The main purpose of using this tool is to measure and analyse the set of data related to scalability and recovery of the software product or application.

• Load Runner – It is yet another popularly used tool to perform non-functional testing of any software product or application. The main purpose of using this tool is because it offers accurate results in analyzing the performance of the software product or application.

• Loadstar – It is yet another popularly used tool to perform non-functional testing of any software product or application. The main purpose of using this tool is because it comes up with cloud hybrid load testing technique which allows to test large scale software product or application and high-performance websites as well.

• Load Complete – It is yet another popularly used tool to perform non-functional testing of any software product or application. The main purpose of using this tool is because it enables the user to execute performance and localization testing at the same time on any software product or application.

• Load Tracer – It is yet another popularly used tool to perform non-functional testing of any software product or application. The main purpose of using this tool is because it gives a wide room for testers to perform all types of non-functional testing of any software product or application at lower costs.

• V-Performer – It is yet another popularly used tool to perform non-functional testing of any software product or application, which is versatile enough to perform any non-functional tests. One of the major advantages of using this tool is it provides clean access to scale both functional and non-functional elements of the software product or application.

Advantages of Non Functional Testing

Following are the some of the major advantages of performing non functional testing on any software application: –

• Non-Functional Testing provides a high level of security which is a basic and fundamental feature to protect any software product or application from the threat of cyber-attacks.

• Non-Functional Testing ensures the loading capability of the software product or application so that number of users can use it simultaneously.

• Non-Functional Testing improves the overall performance of the software product or application.

• Non-Functional Testing consumes less time as compared to other testing processes.

Disadvantages of Non Functional Testing

Following are the some of the major disadvantages of performing non functional testing on any software application: –

• Non-Functional Testing needs to perform again and again each and every time the software product or application is updated.

• Non-Functional Testing becomes expensive due to continuous updates in the software product or application.

Conclusion

So, in the end, we can conclude to say that non-functional testing is as essential and necessary as functional testing because it plays a crucial and important role in customer satisfaction.

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