Model bazlı yazılım ürün hattı testi için araç desteği

We introduce a tool for automated adaptation of test models to be reused for a prod uct family. Test models are specified in the form of hierarchical Markov chains. They represent possible usage behavior regarding the features of systems as part of the product family. A feature model documents the variability among these features. Optional and alternative features in this model are mapped to a set of states in test models. These features are selected or deselected for each product to be tested. Transition probabilities on the test model are updated by our tool according to these (de)selections. As a result, the test case generation process focuses only on the se lected features. We conducted two controlled experiments, both in industrial settings, to evaluate the effectiveness of the tool. We used systems as part of digital TV and wireless access point(WAP) systems. For DTV systems 10 and for wireless access points 5 participants were involved in testing these systems, respectively. We mea sured the effort spent by each participant for the same set of tasks when our tool is used and when it is not. We observed that the tool reduces costs significantly. We also observed that the initial cost for adopting product line testing is amortized even for small product families with 13 DTV and 11 WAP products, respectively.