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Stoelinga, M.I.A. and Timmer, M. (2009) Interpreting a Successful Testing Process: Risk and Actual Coverage. In: Proceedings of the Third IEEE International Symposium on Theoretical Aspects of Software Engineering, 29 Jul - 31 Jul 2009, Tianjin, China. pp. 251-258. IEEE Computer Society. ISBN 978-0-7695-3757-3
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Official URL: http://dx.doi.org/10.1109/TASE.2009.26
Testing is inherently incomplete; no test suite will ever be able to test all possible usage scenarios of a system. It is therefore vital to assess the implication of a system passing a test suite. This paper quantifies that implication by means of two distinct, but related, measures: the risk quantifies the confidence in a system after it passes a test suite, i.e., the number of faults still expected to be present (weighted by their severity); the actual coverage quantifies the extent to which faults have been shown absent, i.e., the fraction of possible faults that has been covered. We provide evaluation algorithms that calculate these metrics for a given test suite, as well as optimisation algorithms that yield the best test suite for a given optimisation criterion.
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