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Publication Detail
Test Oracle Assessment and Improvement
  • Publication Type:
    Conference
  • Authors:
    Jahangirova G, Clark DJ, Harman M, Tonella P
  • Publisher:
    ACM
  • Publication date:
    20/07/2016
  • Published proceedings:
    Proceedings of the 25th International Symposium on Software Testing and Analysis
  • Name of conference:
    International Symposium on Software Testing and Analysis
  • Conference place:
    SaarBrucken, Germany
  • Conference start date:
    18/07/2016
  • Conference finish date:
    20/07/2016
  • Keywords:
    Testing software, oracles, testing oracles
Abstract
We introduce a technique for assessing and improving test oracles by reducing the incidence of both false positives and false negatives. We prove that our approach can always result in an increase in the mutual information between the actual and perfect oracles. Our technique combines test case generation to reveal false positives and mutation testing to reveal false negatives. We applied the decision support tool that implements our oracle improvement technique to five real-world subjects. The experimental results show that the fault detection rate of the oracles after improvement increases, on average, by 48.6% (86% over the implicit oracle). Three actual, exposed faults in the studied systems were subsequently confirmed and fixed by the developers.
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