Overview
In this tutorial, we will explore the differences between Functional and Non-Functional testing. Functional testing is testing to evaluate the functional requirements of the system.
Functional requirements are specifications that describe the functions and features that a software system or product must possess in order to fulfill its intended purpose and meet the needs of its users.
Non-functional requirements referred to as “qualities” or “constraints,” are the attributes that define the overall behavior, performance, security, and other aspects of a software system apart from the core functionality of the system.
Functional Testing
Functional testing is a type of software testing that focuses on evaluating the functionality of a software application to ensure that it meets the specified requirements.
Non-Functional Testing
Non-Functional Testing is a type of software testing that focuses on assessing the quality attributes like performance, security, etc of the system, which are not related to its functionality.
Differences
Some of the differences are as follows:
| Functional Testing | Non Functional Testing |
| The main focus of Functional Testing is to verify that the software’s features and functionalities work as expected and meet the end-user requirements. | The main focus of Non-Functional Testing is to evaluate the software’s non-functional attributes like performance, security, etc beyond its core functionality. |
| The goal of functional testing is to ensure that the software meets its intended purpose. | The goal of non-functional testing is to ensure that the software meets quality attributes like performance, security, and usability. |
Examples of Functional Testing are as follows:
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Examples of Non-Functional Testing are as follows:
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