String routingKey = "request_trace";
assertEquals("There should be one and only one key", 1, map.size());
assertTrue("The only key is " + routingKey, map.containsKey(routingKey));
RoutingInfo info = map.get(routingKey);
List<Route> routes = info.getWhere();
assertEquals("There should be only one sink", 1, routes.size());
Route route = routes.get(0);
assertEquals("sink1", route.getSink());