final BackChannelQueue backChannelQueue = context.getBean(BackChannelQueue.class);
try {
assertEquals(EngineState.STARTED,engine.getEngineState());
for (int i=0; i<NUMB; i++) {
engine.run("de.scoopgmbh.copper.test.persistent.TimingOutPersistentUnitTestWorkflow", null);
}
for (int i=0; i<NUMB; i++) {
WorkflowResult x = backChannelQueue.dequeue(60, TimeUnit.SECONDS);
assertNotNull(x);