What Is Functional Testing Explain It with Example?

Functional testing means testing the application against business requirements. Functional testing is executed using the functional specifications given by the client or by the design specifications according to use cases given by the design team. Role of functional testing is to validating the behavior of an application.

Functional testing is more important because it always verifies that your system is fixed for release. The functional tests define your working system in a useful manner. In functional testing tester has to validate the application to see that all specified requirements of the client whatever we have said in SRS or BRS have been incorporated or not.

Functional testing is always concentrating on customer requirements and whereas the Non-Functional testing is always concentrating on customer expectations.

Functional and Non Functional Test Cases

Functional test cases target business goals and non functional test cases target performance, resource utilization, usability, compatibility etc. Functional testing is a part of system testing.

Example of functional testing is explained below

Considering example if you are functionally testing a word processing application, a partial list of checks you would perform minimally includes creating, saving, editing, spell checking and printing documents.