This paper proposes a method of data-flow testing for Web services composition. Firstly, to facilitate data flow analysis and constraints collecting, the existing model representation of business process execution lan...This paper proposes a method of data-flow testing for Web services composition. Firstly, to facilitate data flow analysis and constraints collecting, the existing model representation of business process execution language （BPEL） is modified in company with the analysis of data dependency and an exact representation of dead path elimination （DPE） is proposed, which over-comes the difficulties brought to dataflow analysis. Then defining and using information based on data flow rules is collected by parsing BPEL and Web services description language （WSDL） documents and the def-use annotated control flow graph is created. Based on this model, data-flow anomalies which indicate potential errors can be discovered by traversing the paths of graph, and all-du-paths used in dynamic data flow testing for Web services composition are automatically generated, then testers can design the test cases according to the collected constraints for each path selected.展开更多
Model checking techniques have been widely used in verifying web service compositions to ensure the trustworthi- ness. However, little research has focused on testing web services. Based on the research of model check...Model checking techniques have been widely used in verifying web service compositions to ensure the trustworthi- ness. However, little research has focused on testing web services. Based on the research of model checking techniques~ we propose a model checking based approach for testing web service composition which is described by using the web services choreography description language （WS-CDL）. According to worldwide web consortium （W3C） candidate recommendation, the WS-CDL specification provides a language for characterizing interactions between distinct web services using XML. Since the behaviors of web service composition are asynchronous, distributed, low-coupled and platform independent, we employ the guarded automata （GA） model for specifying the composition described in WS-CDL and using the simple promela interpreter （SPIN） model checker for detecting the collaborations of web services. Test cases can be transformed from counterexamples generated by SPIN using adequacy criteria. In this paper we apply the transition coverage criterion for generating counterex- amples. To illustrate our approach, we set ＂E-commerce service system＂ as an example for demonstrating how test cases can be generated using SPIN for compositions specified in WS-CDL.展开更多
为了实现流程工业遗留系统的有效集成,提出了一种基于Web服务的流程工业遗留系统信息集成模型。首先,分析流程工业遗留系统的特点,确定遗留系统要公开的数据及功能,再利用Web Service Wrapper技术将其包装为Web服务;然后,企业可以根据...为了实现流程工业遗留系统的有效集成,提出了一种基于Web服务的流程工业遗留系统信息集成模型。首先,分析流程工业遗留系统的特点,确定遗留系统要公开的数据及功能,再利用Web Service Wrapper技术将其包装为Web服务;然后,企业可以根据自身的集成目标,动态地集成这些分布在不同区域的Web服务,该模型对遗留系统采用包装的方法,保证了遗留系统在集成平台中仍保持原先的安全稳定性;最后,通过在建立Mini-Plant的计算机信息集成平台上的实际应用,验证了该集成技术的有效性及实用性。展开更多
基金the National Natural Science Foundation of China(60425206, 60503033)National Basic Research Program of China (973 Program, 2002CB312000)Opening Foundation of State Key Laboratory of Software Engineering in Wuhan University
文摘This paper proposes a method of data-flow testing for Web services composition. Firstly, to facilitate data flow analysis and constraints collecting, the existing model representation of business process execution language （BPEL） is modified in company with the analysis of data dependency and an exact representation of dead path elimination （DPE） is proposed, which over-comes the difficulties brought to dataflow analysis. Then defining and using information based on data flow rules is collected by parsing BPEL and Web services description language （WSDL） documents and the def-use annotated control flow graph is created. Based on this model, data-flow anomalies which indicate potential errors can be discovered by traversing the paths of graph, and all-du-paths used in dynamic data flow testing for Web services composition are automatically generated, then testers can design the test cases according to the collected constraints for each path selected.
基金Project supported by the Open Foundation of State Key Laboratory of Software Engineering(Grant No.SKLSE20080712)the National Natural Science Foundation of China(Grant No.60970007)+2 种基金the National Basic Research Program of China(Grant No.2007CB310800)the Shanghai Leading Academic Discipline Project(Grant No.J50103)the Science and Technology Commission of Shanghai Municipality(Grant No.09DZ2272600)
文摘Model checking techniques have been widely used in verifying web service compositions to ensure the trustworthi- ness. However, little research has focused on testing web services. Based on the research of model checking techniques~ we propose a model checking based approach for testing web service composition which is described by using the web services choreography description language （WS-CDL）. According to worldwide web consortium （W3C） candidate recommendation, the WS-CDL specification provides a language for characterizing interactions between distinct web services using XML. Since the behaviors of web service composition are asynchronous, distributed, low-coupled and platform independent, we employ the guarded automata （GA） model for specifying the composition described in WS-CDL and using the simple promela interpreter （SPIN） model checker for detecting the collaborations of web services. Test cases can be transformed from counterexamples generated by SPIN using adequacy criteria. In this paper we apply the transition coverage criterion for generating counterex- amples. To illustrate our approach, we set ＂E-commerce service system＂ as an example for demonstrating how test cases can be generated using SPIN for compositions specified in WS-CDL.
文摘为了实现流程工业遗留系统的有效集成,提出了一种基于Web服务的流程工业遗留系统信息集成模型。首先,分析流程工业遗留系统的特点,确定遗留系统要公开的数据及功能,再利用Web Service Wrapper技术将其包装为Web服务;然后,企业可以根据自身的集成目标,动态地集成这些分布在不同区域的Web服务,该模型对遗留系统采用包装的方法,保证了遗留系统在集成平台中仍保持原先的安全稳定性;最后,通过在建立Mini-Plant的计算机信息集成平台上的实际应用,验证了该集成技术的有效性及实用性。
