Non Functional Testing is the process of assessing a system’s compliance with non-functional requirements. These requirements are typically related to performance, scalability, security, and other quality attributes. Non Functional Testing is often performed in addition to functional testing, and can be used to identify potential bottlenecks and performance issues.
Non Functional Testing is the process of testing a software application to ensure that it meets all the non-functional requirements. These requirements can include things like performance, scalability, security, and usability. Non Functional Testing is usually done after Functional Testing has been completed.
Non Functional Testing Types
Non-functional testing is a process of verifying the performance, scalability and reliability of a software application. These tests are conducted to check if the software can handle the required load and work under stress conditions. Non-functional testing can be further classified into various types such as:
- Load Testing: Load testing is performed to check if the application can handle the expected number of users or transactions. This test is used to identify any bottlenecks in the system which might cause it to fail under heavy loads.
- Stress Testing: Stress testing is done to check how well the system performs when it is pushed beyond its normal operating limits. This test is used to determine the breaking point of an application and identify any potential stability issues.
- Endurance Testing: Endurance testing is conducted to check if the system can sustain prolonged usage over a period of time without any degradation in performance. This type of test is used to simulate real-world scenarios where the system will be required to operate for long periods of time without interruption.
- Volume Testing: Volume testing checks if the system can handle large volumes of data and transactions without any impact on performance or functionality.
Non Functional Testing Examples
Most software applications are built to perform a specific function or set of functions. Functional testing is a type of testing that verifies that the application performs as expected. However, there are other aspects of an application that must be tested in order to ensure that it will meet the needs of users.
This is where non-functional testing comes in. Non-functional testing covers a wide range of tests that can be performed on an application. Some common examples include:
- Performance Testing: This type of test measures how well the application performs under load. This can help identify any bottleneck issues that need to be addressed before the application goes live. Load Testing: Similar to performance testing, load testing puts an application through its paces to see how it responds to increased traffic levels. This is often done using simulation tools that can generate large numbers of virtual users.
- Stress Testing: Stress testing pushes an application beyond its normal operating limits to see how it responds when under extreme duress. This type of test can help identify any potential stability issues with an application before it goes live.
- Security Testing: As more and more applications move online, security has become a major concern for businesses and organizations. Security tests assesses an application for vulnerabilities that could be exploited by malicious attackers.
Non Functional Testing Interview Questions
1. What is Non Functional Testing?
Non Functional Testing is testing that focuses on the non-functional aspects of a system. This can include things like performance, scalability, security, and usability.
2. Why is Non Functional Testing important?
Non Functional Testing is important because it helps to ensure that a system will be able to meet the demands of its users. If a system isn’t performant or scalable, it won’t be able to handle the load placed on it by users.
Likewise, if a system isn’t secure or usable, users will likely have a negative experience using it.
3. What are some common Non Functional Testing techniques?
Some common Non Functional Testing techniques include load testing (to test performance), stress testing (to test scalability), penetration testing (to test security), and usability testing (to test usability).
Non Functional Testing in Software Testing
Functional vs. Non-Functional Testing: What’s the Difference?
When it comes to software testing, there are two main types of tests that are conducted in order to ensure the quality of the software – functional and non-functional testing. Although both types of tests are important in their own ways, they serve different purposes and focus on different aspects of the software.
In this blog post, we’ll be taking a closer look at the differences between functional and non-functional testing so you can better understand when and how to use each type of test.
Functional Testing: Functional testing is a type of black box testing that focuses on the functionality of the system under test. That is, it tests whether or not the system is doing what it’s supposed to do.
This includes things like verifying correct outputs given certain inputs, checking for valid responses to user actions, etc. Functional testing is usually done manually by testers who have a good understanding of how the system should work. However, it can also be automated using tools like Selenium or HP UFT/QTP .
Non-Functional Testing: Non-functional testing is a type of black box testing that focuses on the non-functional aspects of the system such as performance, scalability, security, etc. Unlike functional testing which is mainly concerned with correctness, non-functional testing is concerned with qualities such as speed, reliability, etc. PerformanceTesting , LoadTesting , and StressTesting are all examples ofnon-functional tests .
Just like functional tests , non-functional tests can also be performed manually or using automated tools .
So now that you know the difference between these two types of tests, when should you use each one? Generally speaking, you should conduct functional tests before conducting non-functional tests .
This is because it doesn’t make sense to test for things like performance or scalability if the basic functionality of the system isn’t working correctly in the first place. Once you’ve verified that the system works as expected through functional testing , then you can move on to conducting various non-functional tests .
Non Functional Testing Tools
There are many non functional testing tools available to software testers. Some of these tools are used to test the performance of applications, while others focus on security or usability. Here is a brief overview of some popular non functional testing tools:
- LoadRunner is a tool from HP that can be used to simulate heavy loads on an application and measure its performance under stress.
- JMeter is an open source tool from Apache that can be used for load and performance testing.
- WebInject is an open source tool for testing web applications. It can be used to inject faults into an application in order to test its error handling capabilities.
- Selenium is a widely used open source tool for automating web browser interactions. It can be used for functional as well as non-functional testing purposes.
- SoapUI is a tool for testing web services, both SOAP and RESTful ones.
Non Functional Testing Checklist
1. What is Non Functional Testing?
Non-Functional Testing is a type of testing that assesses the non-functional aspects of a software application like performance, scalability, stability, etc. It complements functional testing by ensuring that the developed software meets all the necessary quality criteria.
2. Why is Non Functional Testing Important?
Non-Functional Testing is important because it helps to ensure that the software application can handle real-world workloads and perform as expected under different conditions. It also helps to identify any potential bottlenecks in the system which could impact its performance or cause it to fail under certain conditions.
3. What are Some Common Types of Non Functional Tests?
Some common types of non-functional tests include load testing, stress testing, endurance testing, compatibility testing, and security testing. Each type of test assesses a different aspect of the software application’s ability to function properly.
4. What Should be Included in a Non Functional Testing Checklist?
A non functional testing checklist should include all relevant test scenarios and test cases for each type of non functional test being conducted. The checklist should also specify the tools and resources required for each test, as well as any special setup or configuration requirements.
Functional Vs Non Functional Testing
Functional testing is a type of testing that verifies the functionality of a system. Functional testing can be done manually or using automated tools. Non-functional testing is a type of testing that verifies the non-functional requirements of a system.
Non-functional requirements include things like performance, scalability, and security. Non-functional testing can also be done manually or using automated tools.
Which is Non Functional Testing?
Non-functional testing is a type of software testing that assesses the non-functional aspects of a system. These include aspects such as performance, scalability, security, and usability. Non-functional testing is typically performed after functional testing has been completed.
What is Non Functional Testing Example?
Non-functional testing is a type of software testing that verifies how a system works in terms of its non-functional requirements. The main purpose of this type of testing is to ensure that the system meets the expectations of the users in terms of performance, reliability, scalability, etc.
There are several types of non-functional tests, and each one focuses on verifying a specific non-functional requirement.
For example, load testing verifies how well the system performs under heavy loads, while stress testing checks how well it handles unexpected or extreme conditions.
Non-functional tests are often carried out alongside functional tests, as they complement each other and provide a more comprehensive picture of the system under test. Together, they help ensure that the system meets all the requirements necessary for it to be successful in production.
What is Functional And Non Functional Testing With Examples?
Functional testing is a type of black-box testing that focuses on the functionality of an application. It is used to test whether the application under test is working as expected. Functional testing checks the end-to-end behavior of an application.
Non functional testing, on the other hand, focuses on how well the system performs under certain conditions. This includes things like performance, scalability, security, etc. Non functional testing is usually done after functional testing has been completed and all bugs have been fixed.
How Non Functional Testing is Done?
There are many different types of nonfunctional testing, each with its own unique purpose. Here is a brief overview of some of the most common:
- Load testing assesses how well a system performs under heavy loads, such as during peak usage times. This type of testing can help identify bottlenecks and ensure that the system can handle expected traffic levels.
- Stress testing push a system to its limits to see how it responds under extreme conditions. This can be useful for identifying potential issues that may only crop up under rare or unexpected circumstances.
- Usability testing assesses how easy it is for users to interact with a system and achieve their desired results. This type of testing can help uncover design flaws that make using the system difficult or confusing for users.
- Security testing ensures that sensitive data is protected from unauthorized access and that systems are resistant to attack. This type of testing is essential for ensuring the confidentiality and integrity of data stored on systems.
Functional Testing vs Non-Functional Testing | Software Testing Training | Edureka
Conclusion
Non-functional testing is a type of testing that assesses the performance of a system. This can include things like load testing, stress testing, and scalability testing. Non-functional tests are important because they help ensure that a system can handle the demands placed on it.