@Deployment(resources = "org/camunda/bpm/engine/test/history/HistoricActivityStatisticsQueryTest.testSingleTask.bpmn20.xml")
public void testNoRunningProcessInstances() {
String processDefinitionId = getProcessDefinitionId();
HistoricActivityStatisticsQuery query = historyService.createHistoricActivityStatisticsQuery(processDefinitionId);
List<HistoricActivityStatistics> statistics = query.list();
assertEquals(0, query.count());
assertEquals(0, statistics.size());
}