Functional testing is a software testing technique where the functionality of a system or application is tested by providing input and examining the output.
The primary goal of functional testing is to ensure that the software behaves according to its specifications and requirements.
Functional testing is typically a black-box testing method, meaning testers do not need to know the internal code or logic of the software.
Test cases are created to validate specific functions or features of the software, covering different scenarios and user interactions.
Functional testing includes various types such as unit testing, integration testing, system testing, and user acceptance testing.
It is essential for regression testing to verify that new changes or updates to the software do not break existing functionality.
Functional testing encompasses both positive testing (valid inputs) and negative testing (invalid inputs) to evaluate system responses.
Part of functional testing involves assessing the user-friendliness and ease of navigation within the software.
Testers often refer to project documentation, such as requirements and design specifications, to design their test cases.
When defects or issues are identified during functional testing, they are documented and reported for resolution by the development team.