Interscience Open Access Journals
Web services and Service Oriented Computing (SOC) paradigm have received significant attention due to its wide spread adoption and promotion by major IT vendors. As more and more service-oriented softwares are built today testing of web service have becomes crucial point. Web services are distributed, loosly coupled, autonomous, re-usuable, discoverable, hides internal logic (abstraction), minimize retaining information (statelessness) and adhere to Service Level Agreement (SLA).These inherent characteristics imposes great challenges to the tester. In this paper the authors try to impose hierarchical structure on Web Service Description Language (WSDL) in order to uncover more and more errors before its final deployment through black-box testing.