Abstract
Failure mode judgment software is widely used in the security control system, it always has higher safety critical level than other softwares. Therefore the testing standards for such software must also be improved. In order to solve the problem of the black box testing for such software, this paper establishment the software fault tree based on the software fault analysis, and use the software fault tree as a test case design tree, then design the test case after obtained the minimal cut sets. Meanwhile, this paper establish the test case design tree for the failure mode misjudgment, and use it as the basis in designing the failure mode misjudgment test cases. We developed the test case assisted design tool based on these methods, and successfully use it in the software testing of the escape software.
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