Skip to content
-
Non-Functional Testing
Last Updated :
11 Jul, 2025
Non-functional Testing is a type of software testing that is performed to verify the non-functional requirements of the application. It verifies whether the behavior of the system is as per the requirement or not. It tests all the aspects that are not tested in functional testing.
Non-Functional Testing Definition
Non-functional testing is a software testing technique that checks the non-functional attributes of the system. Non-functional testing is defined as a type of software testing to check non-functional aspects of a software application. It is designed to test the readiness of a system as per nonfunctional parameters which are never addressed by functional testing. Non-functional testing is as important as functional testing.
Objectives of Non-functional Testing
The objectives of non-functional testing are:
objectives of non-functional testing- Increased usability: To increase usability, efficiency, maintainability, and portability of the product.
- Reduction in production risk: To help in the reduction of production risk related to non-functional aspects of the product.
- Cost Reduction: To help in the reduction of costs related to non-functional aspects of the product.
- Optimize installation: To optimize the installation, execution, and monitoring way of the product.
- Collect metrics: To collect and produce measurements and metrics for internal research and development.
- Enhance knowledge of product: To improve and enhance knowledge of the product behavior and technologies in use.
Non-Functional Testing Types and Techniques
Here is the Non-Functional Testing Techniques and Types mentioned bellow:
- Performance Testing: Performance testing is a type of software testing that focuses on evaluating the performance and scalability of a system or application. Performance testing aims to identify bottlenecks, measure system performance under various loads and conditions, and ensure that the system can handle the expected number of users or transactions.
- Load Testing: Load testing determines the behavior of the application when multiple users use it at the same time. It is the response of the system measured under varying load conditions.
- Security Testing: Security testing is important to check and sure that applications and systems are protected from various threats. There are several types of security testing, each targeting specific vulnerabilities and aspects of security.
Non-functional Testing Parameters
Let's find some common non-functional testing parameters. These parameters are often used to ensure a system's performance, reliability, usability, and other quality attributes.
Non-functional Testing Parameters- Security: This parameter is tested during Security testing. This parameter defines how the system is secure against sudden attacks from internal and external sources.
- Reliability: This parameter is tested during Reliability testing. This defines the extent to which the system performs its intended functions without failure.
- Survivability: This parameter is tested during Recovery testing. This parameter checks that the software system is able to recover itself in the case of failure and continuously performs the specified function without any failure.
- Availability: This is tested during Stability testing. Availability here means the availability percentage of the software system to the original service level agreement. It means the degree to which the user can rely on the software during its operation.
- Efficiency: This parameter means the extent to which the software system can handle the quantity and response time.
- Integrity: This parameter measures how high the source code quality is when it is passed on to the QA.
- Usability: This is tested in usability testing. This parameter means how easily usable the system is from the user's perspective.
- Flexibility: This parameter means how well the system can respond to uncertainty in a way that allows it to function normally.
- Scalability: This parameter is tested during scalability testing. This parameter measures the degree to which the application can scale up or scale out its processing capacity to meet an increase in demand.
- Reusability: This means how many existing assets can be reused in some form within the software product development process or in another application.
- Interoperability: This parameter is tested during the Interoperability testing. This checks that the application interfaces properly with its components or other application or software.
- Portability: This parameter checks the ease with which the software can be moved from one environment to another.
Benefits of Non-functional Testing
Here is the Non-functional testing advantages that enhance software quality and user satisfaction:
- Improved performance: Non-functional testing checks the performance of the system and determines the performance bottlenecks that can affect the performance.
- Less time-consuming: Non-functional testing is overall less time-consuming than the other testing process.
- Improves user experience: Non-functional testing like Usability testing checks how easily usable and user-friendly the software is for the users. Thus, focus on improving the overall user experience for the application.
- More secure product: As non-functional testing specifically includes security testing that checks the security bottlenecks of the application and how secure is the application against attacks from internal and external sources.
Limitations of Non-functional Testing
Here are the Non-functional testing dis-advantages:
- Non-functional tests are performed repeatedly: Whenever there is a change in the application, non-functional testing is performed again. Thus, it is more resource intensive.
- Expensive in case of software update: In case of software update, non-functional testing is performed again thus incurring extra charges to re-examine the software, and thus software becomes expensive.
Conclusion
Non-functional testing check that the software meets the requirement, security, and performance standards. While it improve the user experience and security, it can be want the resources and costly during updates. Overall, it is a crucial for delivering a reliable and easy development the software product.
Similar Reads
Automation Testing - Software Testing Automated Testing means using special software for tasks that people usually do when checking and testing a software product. Nowadays, many software projects use automation testing from start to end, especially in agile and DevOps methods. This means the engineering team runs tests automatically wi
15+ min read
Automation Testing Roadmap: A Complete Guide to Automation Testing [2025] Test automation has become a vital aspect of the Software Development Life Cycle (SDLC), aimed at reducing the need for manual effort in routine and repetitive tasks. Although manual testing is crucial for ensuring the quality of a software product, test automation plays a significant role as well.
9 min read
How to Start Automation Testing from Scratch? Automation Testing is the practice of using automated tools and scripts to execute tests on software applications, reducing manual effort and increasing efficiency. Starting automation testing from scratch involves several key steps, including selecting the right automation tool, identifying test ca
8 min read
Benefits of Automation Testing Automation Testing is the process of using tools and scripts to automatically run tests on software, instead of performing them manually. It helps developers and testers save time, catch bugs early, and ensure that applications work as expected after every change. In this article, we’ll explore the
4 min read
Stages of Automation Testing Life Cycle In this article, we will explore the phases and methodologies involved in automation testing and the phases of the automation testing lifecycle. We'll cover everything from scoping your test automation to creating a solid test plan and strategy. You'll also learn about setting up the perfect test en
12 min read
Top Automation Testing Books For 2024 In this article, we can explore the top 10 books for automation testing, providing a top-level view of each book's content material and why it's worth considering for everybody interested in this sector. Table of Content Top 10 Books for Automation Testing BooksConclusionFAQs on Top Automation Test
12 min read
Top Test Automation mistakes and Tips for QA teams to avoid them In the dynamic landscape of software testing, avoiding common test automation pitfalls is crucial for QA teams aiming for efficient and successful testing processes. This article delves into prevalent errors in test automation and provides valuable insights on how QA teams can steer clear of these m
7 min read
Essential Skills for a Successful Automation Tester In the domain of software testing, automation plays a crucial role in ensuring efficiency, accuracy, and speed. However, to be a successful automation tester, one must possess a specific set of skills beyond just technical proficiency. This article explores the essential skills required for automati
6 min read
Steps to Select the Right Test Automation tools Selecting the right test automation tools is critical for ensuring efficient and effective testing processes in software development projects. In this article, we will discuss the key steps involved in choosing the most suitable automation tools for your project needs. From understanding project req
5 min read
Best Test Automation Practices in 2024 Test Automation continues to evolve with new technologies and methodologies emerging each year. In 2024, staying updated with the latest best practices is crucial for efficient and effective testing processes. From robust test design to continuous integration and deployment, this article explores th
7 min read
`;
$(commentSectionTemplate).insertBefore(".article--recommended");
}
loadComments();
});
});
function loadComments() {
if ($("iframe[id*='discuss-iframe']").length top_of_element && top_of_screen articleRecommendedTop && top_of_screen articleRecommendedBottom)) {
if (!isfollowingApiCall) {
isfollowingApiCall = true;
setTimeout(function(){
if (loginData && loginData.isLoggedIn) {
if (loginData.userName !== $('#followAuthor').val()) {
is_following();
} else {
$('.profileCard-profile-picture').css('background-color', '#E7E7E7');
}
} else {
$('.follow-btn').removeClass('hideIt');
}
}, 3000);
}
}
});
}
$(".accordion-header").click(function() {
var arrowIcon = $(this).find('.bottom-arrow-icon');
arrowIcon.toggleClass('rotate180');
});
});
window.isReportArticle = false;
function report_article(){
if (!loginData || !loginData.isLoggedIn) {
const loginModalButton = $('.login-modal-btn')
if (loginModalButton.length) {
loginModalButton.click();
}
return;
}
if(!window.isReportArticle){
//to add loader
$('.report-loader').addClass('spinner');
jQuery('#report_modal_content').load(gfgSiteUrl+'wp-content/themes/iconic-one/report-modal.php', {
PRACTICE_API_URL: practiceAPIURL,
PRACTICE_URL:practiceURL
},function(responseTxt, statusTxt, xhr){
if(statusTxt == "error"){
alert("Error: " + xhr.status + ": " + xhr.statusText);
}
});
}else{
window.scrollTo({ top: 0, behavior: 'smooth' });
$("#report_modal_content").show();
}
}
function closeShareModal() {
const shareOption = document.querySelector('[data-gfg-action="share-article"]');
shareOption.classList.remove("hover_share_menu");
let shareModal = document.querySelector(".hover__share-modal-container");
shareModal && shareModal.remove();
}
function openShareModal() {
closeShareModal(); // Remove existing modal if any
let shareModal = document.querySelector(".three_dot_dropdown_share");
shareModal.appendChild(Object.assign(document.createElement("div"), { className: "hover__share-modal-container" }));
document.querySelector(".hover__share-modal-container").append(
Object.assign(document.createElement('div'), { className: "share__modal" }),
);
document.querySelector(".share__modal").append(Object.assign(document.createElement('h1'), { className: "share__modal-heading" }, { textContent: "Share to" }));
const socialOptions = ["LinkedIn", "WhatsApp","Twitter", "Copy Link"];
socialOptions.forEach((socialOption) => {
const socialContainer = Object.assign(document.createElement('div'), { className: "social__container" });
const icon = Object.assign(document.createElement("div"), { className: `share__icon share__${socialOption.split(" ").join("")}-icon` });
const socialText = Object.assign(document.createElement("span"), { className: "share__option-text" }, { textContent: `${socialOption}` });
const shareLink = (socialOption === "Copy Link") ?
Object.assign(document.createElement('div'), { role: "button", className: "link-container CopyLink" }) :
Object.assign(document.createElement('a'), { className: "link-container" });
if (socialOption === "LinkedIn") {
shareLink.setAttribute('href', `https://www.linkedin.com/sharing/share-offsite/?url=${window.location.href}`);
shareLink.setAttribute('target', '_blank');
}
if (socialOption === "WhatsApp") {
shareLink.setAttribute('href', `https://api.whatsapp.com/send?text=${window.location.href}`);
shareLink.setAttribute('target', "_blank");
}
if (socialOption === "Twitter") {
shareLink.setAttribute('href', `https://twitter.com/intent/tweet?url=${window.location.href}`);
shareLink.setAttribute('target', "_blank");
}
shareLink.append(icon, socialText);
socialContainer.append(shareLink);
document.querySelector(".share__modal").appendChild(socialContainer);
//adding copy url functionality
if(socialOption === "Copy Link") {
shareLink.addEventListener("click", function() {
var tempInput = document.createElement("input");
tempInput.value = window.location.href;
document.body.appendChild(tempInput);
tempInput.select();
tempInput.setSelectionRange(0, 99999); // For mobile devices
document.execCommand('copy');
document.body.removeChild(tempInput);
this.querySelector(".share__option-text").textContent = "Copied"
})
}
});
// document.querySelector(".hover__share-modal-container").addEventListener("mouseover", () => document.querySelector('[data-gfg-action="share-article"]').classList.add("hover_share_menu"));
}
function toggleLikeElementVisibility(selector, show) {
document.querySelector(`.${selector}`).style.display = show ? "block" : "none";
}
function closeKebabMenu(){
document.getElementById("myDropdown").classList.toggle("show");
}