Why are test cases needed?

Test cases serve as a formal description of steps, input data, and expected results for verifying specific functionality or aspects of an application. They are necessary for:

• Structuring testing: Providing a systematic and comprehensive approach to verification.
• Repeatability: Allowing tests to be reproduced multiple times under the same conditions.
• Traceability: Linking requirements to test scenarios, ensuring coverage.
• Communication: Serving as a common language for the testing team, developers, and other project participants.
• Progress assessment: Helping track the execution of testing and determine the level of readiness.
• Regression testing: Simplifying the re-execution of tests after code changes.
• Documentation: Recording the testing process and identified issues.