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...the evaluation) for fault localization. While our approach seeks to produce a test suite that achieves branch coverage. Using session data to test web applications was first proposed by Elbaum et al. =-=[10]-=- and later extended by others [2], [26]. In the study by Elbaum et al. [10] a comparison between structural testing and testing using session data was performed. The results showed that structural tes...

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...mproves as the number of collected user sessions increased. However, as the authors recognized, the growth of this number puts additional challenges to the cost of collecting and managing sessions, such as the problem of Wnding an oracle to establish the expected output of each user request. The possibility of using reduction techniques, such as the one described in [13], is suggested by the authors as a feasible approach for reducing test suite size, but the applicability of such an approach still needs to be explored. A second empirical study carried out by the same authors and described in [11] essentially conWrmed the results of the Wrst experiment. Sampath et al. [24] have explored the possibility of using concept analysis for achieving scalability in user-session G.A. Di Lucca, A.R. Fasolino / Information and Software Technology 48 (2006) 1172–1186 1183based testing of Web applications. Concept analysis is a technique for clustering objects that have common discrete attributes: it is used in [24] to reduce a set of user-sessions to a minimal test suite, that still represents actual executed user behavior. In particular, a user session is considered as a sequence of URLs requested...

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...structures, bottlenecks, non-compliance with usability or accessibility guidelines, or security concerns, to provide information on users’s access patterns, and to support testing of web applications =-=[2, 5, 6, 13, 12, 16, 17, 18]-=-. Among these tools, our request generation approach resembles the approach used by load testing tools, except that our goal is not to investigate the web application’s responses to extreme loads, but...

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...del of the web. Unfortunately, traditional web crawlers are not able to crawl AJAX applications [24]. Logging user session data on the server is also used for the purpose of automatic test generation =-=[11]-=-, [34]. This approach requires sufficient interaction of real web users with the system to generate the necessary logging data. Session-based testing techniques are merely focused on synchronous reque...

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...es can be generated using existing data, such as existing test cases and recorded user session data. The use of session data for web application testing has been suggested by several researchers [2], =-=[13]-=-, [18]. Thummalapenta et al. [27] propose an approach that aids test generation approaches in reaching desired states. The proposed approach mines code bases and extracts sequences that are related to...

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...ike language) and then the database populated for fulfilling the rules. Other different approaches that involve the testing of applications that use databases focus on the testing of web applications =-=[16,17]-=- and on regression testing [20,52]. Test adequacy criteria for database applications are a more recent field of study. In [48], a multiple condition based coverage criterion is defined for testing sel...