@Test
 public void testAskResponse() throws InterruptedException {
   Set<HostAndPort> jedisClusterNode = new HashSet<HostAndPort>();
   jedisClusterNode.add(new HostAndPort("127.0.0.1", 7379));
   JedisCluster jc = new JedisCluster(jedisClusterNode);
   int slot51 = JedisClusterCRC16.getSlot("51");
   node3.clusterSetSlotImporting(slot51, JedisClusterTestUtil.getNodeId(node2.clusterNodes()));
   node2.clusterSetSlotMigrating(slot51, JedisClusterTestUtil.getNodeId(node3.clusterNodes()));
   jc.set("51", "foo");
   assertEquals("foo", jc.get("51"));
 }
  @Test
  public void testMigrateToNewNode() throws InterruptedException {
    log.info("test migrate slot to new node");
    Set<HostAndPort> jedisClusterNode = new HashSet<HostAndPort>();
    jedisClusterNode.add(nodeInfo1);
    JedisCluster jc = new JedisCluster(jedisClusterNode);
    node4.clusterMeet(localHost, nodeInfo1.getPort());

    String node3Id = JedisClusterTestUtil.getNodeId(node3.clusterNodes());
    String node4Id = JedisClusterTestUtil.getNodeId(node4.clusterNodes());
    JedisClusterTestUtil.waitForClusterReady(node4);
    node3.clusterSetSlotMigrating(15363, node4Id);
    node4.clusterSetSlotImporting(15363, node3Id);
    try {
      node4.set("e", "e");
    } catch (JedisMovedDataException jme) {
      assertEquals(15363, jme.getSlot());
      assertEquals(new HostAndPort(localHost, nodeInfo3.getPort()), jme.getTargetNode());
    }

    try {
      node3.set("e", "e");
    } catch (JedisAskDataException jae) {
      assertEquals(15363, jae.getSlot());
      assertEquals(new HostAndPort(localHost, nodeInfo4.getPort()), jae.getTargetNode());
    }

    jc.set("e", "e");

    try {
      node4.get("e");
    } catch (JedisMovedDataException jme) {
      assertEquals(15363, jme.getSlot());
      assertEquals(new HostAndPort(localHost, nodeInfo3.getPort()), jme.getTargetNode());
    }
    try {
      node3.get("e");
    } catch (JedisAskDataException jae) {
      assertEquals(15363, jae.getSlot());
      assertEquals(new HostAndPort(localHost, nodeInfo4.getPort()), jae.getTargetNode());
    }

    assertEquals("e", jc.get("e"));

    node4.clusterSetSlotNode(15363, node4Id);
    node3.clusterSetSlotNode(15363, node4Id);
    // assertEquals("e", jc.get("e"));
    assertEquals("e", node4.get("e"));

    // assertEquals("e", node3.get("e"));

  }
  /** slot->nodes 15363 node3 e */
  @Test
  public void testMigrate() {
    log.info("test migrate slot");
    Set<HostAndPort> jedisClusterNode = new HashSet<HostAndPort>();
    jedisClusterNode.add(nodeInfo1);
    JedisCluster jc = new JedisCluster(jedisClusterNode);
    String node3Id = JedisClusterTestUtil.getNodeId(node3.clusterNodes());
    String node2Id = JedisClusterTestUtil.getNodeId(node2.clusterNodes());
    node3.clusterSetSlotMigrating(15363, node2Id);
    node2.clusterSetSlotImporting(15363, node3Id);
    try {
      node2.set("e", "e");
    } catch (JedisMovedDataException jme) {
      assertEquals(15363, jme.getSlot());
      assertEquals(new HostAndPort(localHost, nodeInfo3.getPort()), jme.getTargetNode());
    }

    try {
      node3.set("e", "e");
    } catch (JedisAskDataException jae) {
      assertEquals(15363, jae.getSlot());
      assertEquals(new HostAndPort(localHost, nodeInfo2.getPort()), jae.getTargetNode());
    }

    jc.set("e", "e");

    try {
      node2.get("e");
    } catch (JedisMovedDataException jme) {
      assertEquals(15363, jme.getSlot());
      assertEquals(new HostAndPort(localHost, nodeInfo3.getPort()), jme.getTargetNode());
    }
    try {
      node3.get("e");
    } catch (JedisAskDataException jae) {
      assertEquals(15363, jae.getSlot());
      assertEquals(new HostAndPort(localHost, nodeInfo2.getPort()), jae.getTargetNode());
    }

    assertEquals("e", jc.get("e"));

    node2.clusterSetSlotNode(15363, node2Id);
    node3.clusterSetSlotNode(15363, node2Id);
    // assertEquals("e", jc.get("e"));
    assertEquals("e", node2.get("e"));

    // assertEquals("e", node3.get("e"));

  }
  @Test
  public void testStableSlotWhenMigratingNodeOrImportingNodeIsNotSpecified()
      throws InterruptedException {
    Set<HostAndPort> jedisClusterNode = new HashSet<HostAndPort>();
    jedisClusterNode.add(new HostAndPort(nodeInfo1.getHost(), nodeInfo1.getPort()));
    JedisCluster jc = new JedisCluster(jedisClusterNode);

    int slot51 = JedisClusterCRC16.getSlot("51");
    jc.set("51", "foo");
    // node2 is responsible of taking care of slot51 (7186)

    node3.clusterSetSlotImporting(slot51, JedisClusterTestUtil.getNodeId(node2.clusterNodes()));
    assertEquals("foo", jc.get("51"));
    node3.clusterSetSlotStable(slot51);
    assertEquals("foo", jc.get("51"));

    node2.clusterSetSlotMigrating(slot51, JedisClusterTestUtil.getNodeId(node3.clusterNodes()));
    // assertEquals("foo", jc.get("51")); // it leads Max Redirections
    node2.clusterSetSlotStable(slot51);
    assertEquals("foo", jc.get("51"));
  }