Software testing is the systematic process of evaluating an application to ensure it meets requirements and functions correctly by identifying bugs or missing features . It is a critical phase of the that aims to reduce the risk of failure in operation. Core Concepts and Definitions
: A flaw in the software that causes it to deviate from its expected behavior. Levels of Testing Software Testing
: Final verification (often by the user) to determine if the system is ready for deployment. Software testing is the systematic process of evaluating
: A detailed set of conditions, steps, and expected results used to validate a specific functionality. Levels of Testing : Final verification (often by
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: Testing the complete, integrated system to verify end-to-end performance and functionality.
: Validating the smallest testable components (functions or classes) in isolation.