Functional VS Non-Functional Testing: Key Differences

Every application has its own performance criteria which must be identified during requirement specification stage of SDLC. Those metrics may include response time, resource utilization, throughput etc. While functional testing ensures that all the software functionality works properly, non-functional testing checks how well these functionalities perform in real-world scenarios. Apart from these, you can perform accountability testing, recovery testing, documentation testing, volume testing, endurance testing, and many more types of non-functional testing. Functional testing evaluates the software’s features to ensure they are bug-free.

Stress testing is a type of non-functional testing that tests how well the software performs when it’s put under abnormal amounts of stress. This could mean testing how the software performs when someone tries to use lots of different features at once, or while running many other applications at the same time. There are lots of different types of non-functional testing, each of which tests a different non-functional aspect of a software application’s performance or efficiency.

Test Case Examples of Non-Functional Testing

The software is evaluated based on the requirements for the software development and detects any errors. Testing a system is the process of assessing its deficiencies to determine a lack of requirements. This stage of the procedure has a significant impact on the overall software development. Regular testing is vital to ensure that the system executes the process without defects. If you’re new to non-functional testing, it can be easy to make some common mistakes that testers and QA professionals often fall into. The ZAPTEST FREE edition is just a pared-down version of the enterprise edition, offering many of the same functionalities on a smaller scale.

Early testing also smooths the transition from development to functional and non-functional testing. Portability testing — Tests how an app transfers from one software or operational environment to another. Endurance testing — Tests an app under a heavy load over an extended period of time. Configuration testing — Tests an app against software and hardware variations. Compliance testing — Tests whether an app meets specified requirements or regulations.

Risk management

JMeter supports all basic protocols such as HTTP, JDBC, LDAP, SOAP, JMS, FTP, etc. Diffy is a handy visual regression tool that offers developers several features to conduct software QA. It provides integration with several popular platforms like WordPress, GitHub, etc. It can take screenshots https://globalcloudteam.com/ automatically, search for bugs, and offer faster and more accurate analysis. Its proprietary comparison algorithm is designed to reduce false positives compared to conventional pixel-perfect comparison algorithms. Localization testing verifies the application works well in different locales.

Usability testing looks at five aspects of testing — learnability, efficiency, satisfaction, memorability, and errors. A discussion of non-functional testing is incomplete without a proper comparison between functional and non-functional testing. Tests the major functionality of the software such as its features, processes & integration.

Functional vs. Non-Functional Testing Methodologies

It determines whether the program has been correctly installed and performs as planned. Functional testing doesn’t just mean testing a function of your module or any class, despite what you might believe. Testing is examining a system to find any flaws, defects, bugs, or requirements that are not present in the system but should be. You can try Loadium for free or pay to download the full version of the application.

• It involves executing the test cases created previously to test different aspects of software applications including security, loading times, capacity, and portability.
• Portability testing is done to see if the system can work smoothly in diverse environments and operating systems.
• Detects security issues early and protects the system from cyber-attacks.
• There is some overlap between the two categories in the kinds of tests a developer might run.
• Compatibility testing lets you validate if the application or product is compatible with different devices, browsers, and operating systems, all at widely different configuration strengths.

According to Frost & Sullivan, software testing is anticipated to expand at a 14% CAGR over the next four years because of the emergence of agile testing and DevOps. Proper test maintenance ensures that software tests can be repeated without compromising on the quality of test results. Below are some of the best YouTube tutorials on software testing available today. Browse our favorite online non-functional testing resources below or read the answers to some of the most frequently asked questions about non-functional testing. If you want to find out more about non-functional testing, there are lots of FAQs and resources available online. Instead, testers should approach testing with the attitude that the purpose of testing is to look for defects.

Type of Software Testing

Load testing verifies that the system can operate at the required response times when subjected to its expected load. Then, stress testing can find the failure point in the system when the tested load exceeds that which it can support. When it comes to types, testing processes can fall under either functional or non-functional.

Plus, execute your tests with real user conditions against the thousands of devices and browsers that we support in our cloud-based device lab. Scalability testing — Tests an app’s ability to scale up or down as user requests vary. Security testing — Tests an app’s security mechanisms to reveal vulnerabilities. Performance testing — Tests the speed and responsiveness of an app under various conditions. Internationalization testing — Tests if an app can adapt to regional languages and other factors based on location.

Functional Vs Non-Functional Testing: Expert Guide

It is performed at the early stages of quality assurance and allows the team to ensure that all customer-requested requirements are met and integrated with the final product. It is the simplest form of performance testing, and it is carried out under a specified predicted load https://globalcloudteam.com/glossary/non-functional-testing/ condition to understand the application behavior. The regular usage condition is repeated with multiple users to ascertain the consistency of an application’s response time. It helps to discover the system’s ability to handle pressure when multiple users log in simultaneously.

Recovery testing involves intentionally breaking the software in several different ways. Functional testing suites are the more strictly necessary of the two categories. The implementation details and performance metrics that non-functional testing targets are often secondary matters of refinement. A robust testing methodology also accounts for these factors, especially if scaling is a priority. Functional tests confirm that the code is doing the right things, while non-functional tests validate that the code is doing things the right way.

System Requirements

Non-functional tests are just as important as functional testing and impact customer satisfaction. This type of testing checks functionally on a crucial level , it paves the way for other testing types to take part. However, there are many types of functional and non-functional tests available to choose from. For choosing the right testing technique, you must know the differences between functional testing vs non-functional testing. Both functional and non-functional testing is extremely crucial for ensuring the performance and quality of software.