assertTrue(_exchangeRegistry.getExchange(new AMQShortString(exchange1)) != null);
assertTrue(_exchangeRegistry.getExchange(new AMQShortString(exchange2)) != null);
assertTrue(_exchangeRegistry.getExchange(new AMQShortString(exchange3)) != null);
mbean.unregisterExchange(exchange1);
mbean.unregisterExchange(exchange2);
mbean.unregisterExchange(exchange3);
assertTrue(_exchangeRegistry.getExchange(new AMQShortString(exchange1)) == null);
assertTrue(_exchangeRegistry.getExchange(new AMQShortString(exchange2)) == null);
assertTrue(_exchangeRegistry.getExchange(new AMQShortString(exchange3)) == null);