We propose a framework for the automatic dynamic testing of workflow management systems (WfMSs). We first classify faults that can occur during the execution of a WfMS and then describe a systematic testing scheme that provides the following advantages. First, the system developer does not need to play the roles of participants, and hence the entire testing process can be automated. Second, resources that cannot be addressed or represented by the workflow engine can be simulated, which makes the proposed framework also a simulation environment for applications. Third, our platform solves the problems caused by the presence of nondeterministic behavior during dynamic testing of a WfMS. Finally, we describe how to apply temporal logic to verify the dynamic behavior of the tested WfMS. The implementation and experimental results demonstrate the feasibility of the proposed framework.