Non functional testing in software testing

Integration Testing : The integration testing is performed when two or more functions or components of the software are integrated to form a system. Basically, it checks the correct functioning of the software when the components are merged as a single unit. Regression Testing : Regression Testing is performed when a bug is fixed or new functionality has been introduced to a program. It ensures that existing functionality has not been broken due to the introduction of new changes.

User Acceptance Testing : it is a type of software testing where a system is tested for customer's acceptability.

The only purpose of this test is to evaluate the compliance of the system with its business requirements and to evaluate if it is acceptable for delivery.

It also verifies whether the software can perform specified tasks in real situations. Non Functional testing is performed according to the non-functional requirements of the product i. The non-functioning tests are carried out according to the requirements defined by the client. Non Functional testing emphasizes the behavior of the product and not the functionality.

Here are some of the important facts about Non-Functional Testing:. Functional testing has already ensured that application can successfully let you pay the bills, but that's not all - We also need :. Application Security: The application should ensure the security of Card details and Personal User information. Page loading: The pages should load fast, and should not time out despite several users accessing it at the same time. It should not be forgotten that the inclination and confidence of users with respect to a software product is always affected by non-functional qualities, so always remember that non-functional tests are crucial in their own way.

Some of the important parameters of Non-Functional testing are listed below:. Security : Security is one of the most important aspects of Non-Functional Testing.

It ensures software systems and applications are free from any threats, risks or vulnerabilities. Usability : In Non-Functional testing, Usability refers to the fact that how easily a user can interact with the system. The feature of an application that allows a user to learn, operate, give inputs and analyze the outputs. This non-functional parameter checks a software system interfaces with other software systems.

This is checked by Interoperability Testing. The term refers to the ease with which the application can work in different hardware and software configurations. It refers to a portion of the software system that can be converted for use in another application. You may find some difference in the above classification in different books and reference materials.

The above list is not the complete as there are more than Types of Testing and counting. No need to worry, you will pick them up as you age in the testing industry. More on this in a later tutorial. Skip to content. For example, if the system is down for maintenance all the time then users would not be happy with it. For example, what would happen if your server goes down, how much time it will take to recover from that situation.

We usually do endurance tests to see how our application is behaving under stressful conditions. For example, If you have an ecommerce website and you have mentioned the only USA as the shipping destination for your product then users from other countries would not be able to place their order. So this type of testing checks whether our system is giving accurate results or not. It can be done on the client-side or server-side or both sides.

For example, Google provides the same search functionality for major web browsers like Chrome, Firefox, IE, etc. Interface Testing. Regression Testing. Who performs functional testing? Functional testing is performed using the functional specification provided by the client and verifies the system against the functional requirements. Non-Functional testing checks the Performance, reliability, scalability and other non-functional aspects of the software system.

Is UAT functional testing? Functional testing, on the other hand, tests specific requirements and specifications of the software. It lacks the user component. A functional test could conclude that the software meets its specifications. Why is non functional testing important? Non-functional testing is as important as functional testing. It ensures security and establishes the reliability of the application.

It ensures that the application developed is robust enough to work under duress. What is a negative test case? Negative case is case where the system validated against the invalid input data. A negative test checks if a application behaves as expected with its negative inputs.