Abstract
This paper deals with the problem of evaluating and testing recovery and adaptation frameworks (RAF) for distributed software systems. We present TESS, a testbed for automatically generating distributed software architectures and their corresponding runtime applications, deploying them to the nodes of a cluster, running many different types of experiments involving failures and adaptation, and collecting in a database the values of a variety of failure recovery and adaptation metrics. Using the collected data, TESS automatically performs a thorough and scientific analysis of the efficiency and/or effectiveness of a RAF. This paper presents a case study on the use of TESS to evaluate DARE, a RAF developed by our group.