ADFD+: An Automatic Testing Technique for Finding and Presenting Failure Domains

 Abstract—This paper presents Automated Discovery of Failure Domain+ (ADFD+), an upgraded version of ADFD technique with respect to algorithm and graphical presentation of failure domains. The new algorithm used in ADFD+ searches for failure domain around the failure in a given radius as against ADFD which limits the search between lower and upper bounds. This results in consumption of lower number of test cases for detecting failure domain. The output has been improved in ADFD+ to provide labeled graphs for depicting the results in easily understandable user-friendly form. ADFD+ is compared with Randoop to find the comparative performance of the two techniques. The results indicate that ADFD+ is a promising technique for finding failure and failure domain efficiently and effectively. In comparison with Randoop, its efficiency is evident by taking two orders of magnitude less time and its effectiveness is shown by taking 50% or less number of test cases to discover failure domains. ADFD+ has the added advantage of presenting the output in graphical form showing point, block and strip domains visually as against Randoop, which lacks graphical user interface.