Abstract
System Testing encompasses a large number of test cases, which may not be able to get executed due to constrained time, budget and limitation of the resources. Therefore, the test cases must be prioritized in some order such that the critical and most required functionality can be tested early. In this paper, a hierarchical approach for system test case prioritization based on requirements has been proposed that maps requirements on the system test cases. This approach analyzes and assigns value to each requirement based on a comprehensive set of twelve factors thereby prioritizing the requirements. Further, the prioritized requirement is mapped on the highly relevant module and then prioritized set of test cases. To analyze the effectiveness of this approach, a case study of income tax calculator software [1] has been taken. The existing as well as the proposed approach were applied and analyzed on this software. The results show the efficacy of the proposed approach in terms of fault detection and severity early.
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