A black box testing technique, where the functionality of an application is tested to generate the desired output by providing certain input is called ‘Functional testing’.

The role of functional testing is not only to VALIDATE the behavior of the application as per the requirement document specification but is ALSO to verify whether the application is ready to be released into the live environment or not.

Given below are few functional testing TECHNIQUES that are commonly used:

• Unit testing
• Smoke testing
• INTEGRATION testing
• System Testing
• Usability testing
• Regression testing
• USER Acceptance testing

A black box testing technique, where the functionality of an application is tested to generate the desired output by providing certain input is called ‘Functional testing’.

The role of functional testing is not only to validate the behavior of the application as per the requirement document specification but is also to verify whether the application is ready to be released into the live environment or not.

Given below are few functional testing techniques that are commonly used: