What is the purpose of a test case?

The primary purpose of a test case is to define the specific inputs, execution conditions, and the expected outcomes for a particular test scenario. A well-structured test case provides a clear and detailed guideline to ensure that the feature or system being tested behaves as intended. It outlines the steps involved in the test, the precise data to be used, and what constitutes a successful or successful outcome, allowing testers to execute the testing process methodically.

By having test cases, teams can also facilitate repeatability and maintainability during the testing process. This clarity aids not only in execution but also in verifying whether specific requirements are met, contributing to the overall quality assurance of the software being developed. Moreover, well-defined test cases enhance communication among team members and streamline debugging processes when issues arise.

In contrast, documentation of test results, analysis of performance metrics, and validation of system ownership, while important aspects of the testing lifecycle, do not encapsulate the fundamental purpose of a test case, which is centered around defining the testing conditions and expected results.