Example usage:

 public class SearchFlowExecutionTests extends AbstractXmlFlowExecutionTests {
 
 	   protected ExternalizedFlowDefinition getFlowDefinition() {
 	       File flowDir = new File("src/webapp/WEB-INF");
 	       Resource resource = return new FileSystemResource(new File(flowDir, "search-flow.xml"));
 		   return new ExternalizedFlowDefinition("searchFlow", resource);
 	   }
 
     public void testStartFlow() {
 	       startFlow();
 		   assertCurrentStateEquals("displaySearchCriteria");
 	   }
 
 	   public void testDisplayCriteriaSubmitSuccess() {
 	       startFlow();
         MockParameterMap parameters = new MockParameterMap();
         parameters.put("firstName", "Keith");
         parameters.put("lastName", "Donald");
 		   ViewSelection view = signalEvent("search", parameters);
 		   assertCurrentStateEquals("displaySearchResults");
 		   assertModelAttributeCollectionSize(1, "results", view);
 	   }
 }