Abstract
This paper reports a case study where pair-wise testing was applied to a real-world program. In particular we focus on weighting, an added feature which allows the tester to prioritize particular parameter values. In our previous work we proposed a weighting method that can reflect given weights in the resulting test suite more directly than can existing methods. To asses the effects of weighting in a practical testing process, we compare the number of execution times of the program's methods among three pair-wise test suites, including the test suite generated by our weighting method and those generated by an existing test case generation tool with and without the weighting option. The results show that the effects of weighting were most clearly observed when our weighting method was used.