public static void verifyUpdaterThreadIsAlive() throws InterruptedException {
    QueueConnectionImpl conn2 = (QueueConnectionImpl) pool.getPrimaryConnection();
    assertNotSame(conn1, conn2);
    assertFalse(conn1.getServer().equals(conn2.getServer()));
    assertNull(((QueueConnectionImpl) conn1).getUpdater());
    assertTrue((conn2).getUpdater().isAlive());
  }
put on non interest list ep and verify updates
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/InterestListEndpointDUnitTest.java