List<Subscription> subscriptions = service.listSubscriptions(TOPIC);
assertEquals(2, subscriptions.size());
sortBySubId(subscriptions);
Subscription subscription1 = subscriptions.get(0);
assertEquals("mySubscription1", subscription1.getId());
assertEquals("title:hello", subscription1.getQuery());
Subscription subscription2 = subscriptions.get(1);
assertEquals("mySubscription2", subscription2.getId());
assertEquals("body:foo", subscription2.getQuery());
}