consumer.getChannel().send(mec);
// Provider side
RobustInOnly mep = (RobustInOnly) provider.getChannel().accept(100L);
assertNotNull(mep);
assertEquals(ExchangeStatus.ACTIVE, mep.getStatus());
mep.setFault(mep.createFault());
provider.getChannel().send(mep);
// Consumer side
assertSame(mec, consumer.getChannel().accept(100L));
assertEquals(ExchangeStatus.ACTIVE, mec.getStatus());
assertNotNull(mec.getFault());