Functional Testing
Functional testing is a software testing methodology that validates a system's functionality by testing it against specified requirements. It focuses on verifying that the software performs its intended tasks correctly, such as user interactions, data processing, and business logic, without considering the internal code structure. This type of testing ensures that the application behaves as expected from an end-user perspective.
Developers should learn and use functional testing to ensure software reliability and user satisfaction, particularly during quality assurance phases or when building applications with critical user workflows. It is essential for validating features like login systems, payment processing, and form submissions in web, mobile, or desktop applications, helping to catch bugs before deployment and reduce post-release issues.