What is the difference between positive testing and negative testing?

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What is the difference between positive testing and negative testing?

Positive testing and negative testing are two different approaches used in software testing to ensure the quality and reliability of a software application.

Positive testing, also known as "happy path testing," focuses on validating the expected behavior of the software. It involves testing the system with valid inputs and expected conditions to ensure that it functions as intended. The purpose of positive testing is to verify that the software meets the specified requirements and performs its intended functions correctly. It aims to identify any defects or issues that may arise when the software is used under normal or expected conditions.

On the other hand, negative testing, also known as "error path testing" or "exception testing," is designed to test the software's ability to handle unexpected or invalid inputs and conditions. Negative testing involves intentionally providing invalid or incorrect inputs to the system to check how it responds to such scenarios. The objective of negative testing is to identify potential vulnerabilities, weaknesses, or defects in the software when it encounters unexpected or abnormal conditions. It helps ensure that the software can handle errors gracefully, provide appropriate error messages, and prevent any potential security risks or system failures.

In summary, the main difference between positive testing and negative testing lies in the approach and focus. Positive testing validates the expected behavior of the software under normal conditions, while negative testing focuses on testing the software's ability to handle unexpected or invalid inputs and conditions. Both types of testing are essential for ensuring the overall quality and reliability of a software application.