We now check for an infinite loop during validation.

This happened when testing for a Department Chair in a workflow.
Our mocked data for study_info script did not have a Department Chair

crc/services/workflow_service.py

@@ -95,7 +95,9 @@ class WorkflowService(object):
             WorkflowService.delete_test_data()
             raise ApiError.from_workflow_exception("workflow_validation_exception", str(we), we)
 
+        count = 0
         while not processor.bpmn_workflow.is_completed():
+            if count < 1000:
                 try:
                     processor.bpmn_workflow.get_deep_nav_list()  # Assure no errors with navigation.
                     processor.bpmn_workflow.do_engine_steps()
@@ -117,9 +119,13 @@ class WorkflowService(object):
                                            task_name=task.get_name())
                         WorkflowService.populate_form_with_random_data(task, task_api, required_only)
                         processor.complete_task(task)
+                    count += 1
                 except WorkflowException as we:
                     WorkflowService.delete_test_data()
                     raise ApiError.from_workflow_exception("workflow_validation_exception", str(we), we)
+            else:
+                raise ApiError.from_workflow_exception(code='validation_loop',
+                                                       message=f'There appears to be an infinite loop in the validation. spec_id: {spec_id}')
 
         WorkflowService.delete_test_data()
         WorkflowService._process_documentation(processor.bpmn_workflow.last_task.parent.parent)