Web service choreographies have been proposed as a decentralized scalable way of composing services in a SOA environment. In spite of all the benefi ts of choreographies, the decentralized ow of information, the parallelism, and multiple party communication restrict the automated testing of choreographies at design and runtime. The goal of our research is to adapt the automated testing techniques used by the Agile Software Development community to the SOA context. To achieve that, we seek to develop software tools and a methodology to enable test-driven development of Choreographies. In this paper, we present our first step in that direction, a software prototype composed of ad hoc automated test case scripts for testing a web service choreography.