Functional testing is a type of software testing in which the system is tested against functional requirements and specifications. Testing functionality ensures that the software fulfills all requirements or specifications. This type of testing is focused on what happens when something is processed. It does not make any system structure assumptions but focuses on the simulation of how the system is actually used.
What is Functional Testing?
This is a form of software testing wherein a system is evaluated against functional requirements and specifications. Software testing entails the execution of a program or application to verify whether the actual outcomes align with the anticipated outcomes and to guarantee that the software system is free from bugs. It’s possible to complete it manually or using automated software.
Purpose of Functional Testing
Functional testing primarily entails black box testing, which can be conducted either manually or through the utilization of automation. The objective of software testing is to verify the functionality of the software.
- Test each function of the application: Functional testing checks how well the application works by giving it information and checking if it meets the requirements of the application.
- Test primary entry function: In functional testing, the tester thoroughly examines each entry function of the application to verify all entry and exit points.
- Test flow of the GUI screen: Functional testing checks the flow of the GUI screen so that the user can navigate through the application.
What are the benefits?
Functional Testing has the following Benefits –
- The goal is to ensure that the customer or end user is satisfied.
- It produces a product/software that is free of defects.
- It aims to ensure that all the requirements are met.
- It ensures the flawless functioning of all functionalities of an application/software/product.
- It makes sure that the program or product works as you want it to.
- It assures protection and security.
- This enhances the quality of the product.
- Reduce the risks and losses associated with the product/software.
What to Test in Functional Testing?
The objective of software testing is to examine the functionality of the software being tested. It concentrates on
- Basic Usability: Functional testing involves basic user research to examine whether the user is capable of freely traversing the screen without encountering obstacles.
- Primary functions: This entails thoroughly evaluating the application’s primary attributes and functionalities.
- Accessibility: This involves testing the users’ accessibility of the system.
- Error Conditions: Functional testing means making sure that the right error messages are shown when there are errors.
How does it work?
The procedure for conducting functional testing is usually based on the following procedure. –
- You should use test data to identify the inputs.
- Determine the anticipated outcome based on the aforementioned inputs.
- Test cases that are equipped with the appropriate inputs.
- Compare the actual results with what you expected.
The result that is observed and predicted is sufficient to conclude that the software works properly and that the test has been successful. If they do not match, the software is experiencing an issue.
It is having 2 perspectives.
- The requirements focused testing prioritizes requirements based on risk criteria in order to evaluate the most critical and essential features and functions.
- Business-process-focused testing uses the knowledge of end-user business requirements to look at how well the application works in the context of use cases.