What Is Functional Testing?

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Functional Testing is a crucial software testing process used within software development to ensure that the software conforms to all the requirements. The primary purpose of functional testing is to verify that the software has all the necessary functionality specified within its functional requirements. This testing process helps evaluate and compare each software function with the business requirements, ensuring that the software outputs align with the end-user or business's expectations. Functional Testing involves providing the software with related input and evaluating the output to see how it conforms, relates or varies compared to its base requirements. The testing process not only checks the software for its functionality but also for its usability. This means the navigational functions are tested to ensure they work as required. Various functional testing techniques are used in software testing. These techniques include smoke testing, white box testing, black box testing, unit testing and user acceptance testing. Smoke testing is a technique that is used to test whether the software is stable enough to undergo more rigorous testing. White box testing is a technique that involves testing the internal workings of the software to ensure that it is functioning as intended. Black box testing is a technique that involves testing the software's functionality from an external perspective without knowledge of its internal workings. Unit testing is a technique that involves testing individual units or components of the software to ensure that they are functioning as intended. Lastly, user acceptance testing involves testing the software with the end user to ensure it meets their expectations and requirements. All these techniques play a vital role in ensuring the software functions correctly and meets the requirements. In conclusion, functional testing is an essential process in software development that helps ensure the software functions correctly and meets the necessary requirements. The testing process enables developers to evaluate software functions and compare them with the business's needs, ensuring that the software outputs align with the end-user or business's expectations. The testing process also checks the software's usability, such as navigational functions, to ensure they work as required. With various functional testing techniques available, developers can choose the best technique for their software testing needs to ensure the software functions correctly.

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