what is functional testing

WHAT IS FUNCTIONAL TESTING Functional Testing evaluates individual and cohesive behaviour functions of a software system to verify that they adhere to predefined specifications. It tests the functional accuracy, interoperability of subsystems and compliance with pre-defined standards in the context of functional and business requirements.

What is Functional Testing?  Functional Testing, also known as Specification-based testing, evaluates individual functions of a software system to verify that they adhere to pre-defined specifications. It tests the functional accuracy, interoperability of subsystems and compliance with pre-defined standards in the context of functional and business requirements.  The primary focus of this type of testing is validating the results of processing, not “how” the processing is done. It can also be termed as a form of Black Box testing.

TYPES OF FUNCTIONAL TESTING Functional testing is normally performed during the System and Acceptance Testing. Additionally, it may involve testing User Interface, APIs, Database and client/ server applications.

Unit Testing: Unit testing is performed to test the functionality of an individual unit, which is essentially the smallest testable component of a software system. This kind of testing requires to perform tests which would provide input parameters to a unit and validate the outputs against the specifications.

Smoke Testing: Smoke Testing is done to test the stability of a build after each release. It ensures that major critical functions of build under test are working as per the expectations. It is also referred as Build Verification testing. This testing is done before software goes for regression testing.

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