assertNotNull(list);
int initialWatchCount = list.size();
assertTrue(initialWatchCount >= 1);
String tubeName = "tube-" + UUID.randomUUID().toString();
int watchCount = client.watch(tubeName);
assertEquals(initialWatchCount + 1, watchCount);
list = client.listTubesWatched();
assertNotNull(list);
assertEquals(watchCount, list.size());