A Preliminary Study on BPEL Process Testability

WS-BPEL is an OASIS standard language used for describing interactions in Service Oriented Architectures (SOA). BPEL processes are usually overlapped in large Business applications composed of web services and such applications are more and more developed with respect of quality processes. Testability, which is the topic of this paper, is a quality criterion devoted for testing activities which evaluates the test coverage and the testing cost. We study the BPEL testability on two well-known testability criteria, observability and controllability. To evaluate them, we propose to transform ABPEL specifications into STS and to apply existing methods. Then, from STS testability issues, we deduce some patterns of ABPEL testability degradation. These latter help to finally propose testability enhancement methods of ABPEL specifications.