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| | Understanding Functional vs. Non-Functional Testin (30th Dec 24 at 8:10am UTC) | | Functional testing and non-functional testing are both essential components of software testing, but they focus on different aspects of the application.
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Functional testing evaluates the software’s functionality, ensuring that each feature works as expected according to the specified requirements. It focuses on verifying that the system performs its intended tasks and delivers correct outputs. Common types of functional testing include unit testing, integration testing, system testing, and user acceptance testing.
Functional tests answer questions like "Does the login feature work correctly?" or "Can users successfully complete transactions?"
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On the other hand, non-functional testing assesses the performance and usability aspects of the system. It is concerned with how well the software operates rather than what it does. This type of testing examines attributes like scalability, reliability, load handling, security, and user experience. Non-functional tests answer questions like "How does the system perform under heavy load?" or "Is the application secure from potential threats?" Examples include performance testing, stress testing, security testing, and usability testing.
In summary, functional testing focuses on ensuring that the software’s features work as intended, while non-functional testing ensures that the software performs efficiently and meets user expectations in terms of performance and security. Both types are crucial for delivering a robust and reliable product.
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