Abstract
Reducing the scale of test requirement suite is helpful for simplifying the relations between test requirement and test case, it can generate minimal test case suite rapidly, as is proposed in this paper. It bases on nonlinear data structure. Primarily, confirmed the test requirements and generated the initial test case suite according to program flow diagram, then drew the directed graph of relationships of test requirements, calculated the out-degree of various nodes in the directed graph, retained the nodes which out-degrees are bigger than one, structured test requirement tree according to these nodes and its related nodes, took out leaf nodes from the test requirement tree and put them into simplified test requirement suite. It is indicated by the example that this method could eliminate the relationships of equivalence and inclusion in test requirements automatically. It simplifies the test requirement suite effectively.KeywordsNodetreegraphdata structuretest requirementout-degree
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