Brief introduction to Non functional testing and its objective.

Posted By : Sana Khan | 18-Dec-2020

If we talk about non-functional testing that is always focused on the better quality of the software especially the non-functional qualities such as response time of the application, security, scalability, usability, and performance, etc.


Non Functional software testing ensures that an application meets its identified and specified performance requirements. Apart from this, it covers all the tests that are not covered in functional testing.


Non-functional testing is defined as a kind of software testing to check non-functional phases of a software application. It is basically designed to test the readiness of the system as per nonfunctional parameters that have never been addressed by functional testing. Non-functional testing holds as much significance as functional testing.


The non-functional test comes under the black-box testing technique.


Objectives of Non-functional Testing:

  • It increases the usability, efficiency, maintainability, and portability of the product.
  • It minimizes the production risk associated with non-functional aspects of the product.
  • It helps in the reduction of costs related to non-functional aspects of the product.
  • It optimizes the installation, execution, and monitoring way of the product.
  • It collects and produces measurements and metrics for internal research and development.
  • it improves and enhances knowledge of the product behavior and technologies in use.


Also Read: Protocols to be referred to before Testing

Following are the types of non-functional testing:

1. Availability Testing:
Availability Testing is an approach of testing which integrates system testing, contrary to what is available for its operational requirements. It is carried out to make sure the 24*7 availability of software applications to perform its required functionalities, whenever required without getting failed.


2. Performance Testing:
Nonfunctional testing can be similar to performance testing. In addition to analyzing the performance of the software, it helps in ensuring the response time. 


3. Compatibility Testing:
It is necessary to carry out compatibility testing to check out the compatibility of the application with various software and hardware. Compatibility testing is also performed on various versions or releases of the same application


4. Load Testing:
Load testing is carried out to check whether the system can handle the pressure or load of many users accessing the application at the same time. 


5. Installation Testing:
You can also call it implementation testing. This testing technique is used to calculate the expected functioning of the software. It posts successful installation and simultaneously ensures no issues or errors during the process of software installation, upgrades, and un-installation.


6. Security Testing:
It is used to verify and validate the security features of the software. Confidentiality, integrity, availability, authentication, and authorization areas should be covered that are focused to be tested when security testing is conducted. 


7. Recovery Testing:
This testing involves the failure or crash of the software application in order to assess its ability to get recovered and fully functional, quickly.




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