Functional Testing

Functional Testing is a type of software testing that focuses on verifying whether the application functions as expected based on the defined functional requirements. It ensures that the system performs the intended actions, such as processing user inputs, generating outputs, and interacting with other systems, according to specifications.

Key components of functional testing include:

• Requirement-Based Testing: Functional tests are based on the functional requirements of the system, ensuring that all specified features work as expected.
• Test Case Execution: Test cases are designed to verify individual features or functionalities, such as login, search, payment processing, or data validation, by providing specific inputs and checking the corresponding outputs.
• User Interface (UI) Testing: Validating that the UI behaves as intended, ensuring that buttons, forms, menus, and other interactive elements respond correctly to user actions.
• Boundary Testing: Testing the limits of input values, such as minimum, maximum, and invalid inputs, to ensure the system handles all edge cases and error scenarios properly.
• Integration Testing: Verifying that different functional components of the system interact correctly, such as ensuring proper communication between the front-end and back-end.
• Regression Testing: Ensuring that recent changes or new features do not disrupt existing functionality by running functional tests on previously tested features.

Functional testing ensures that the software meets the business requirements and performs its intended tasks without errors or unexpected behaviors. It is an essential part of the software development lifecycle, helping to deliver reliable and user-friendly applications.