@Test
  public void testReadShards() throws Exception {
    String zkDir = dataDir.getAbsolutePath() + File.separator + "zookeeper/server1/data";
    ZkTestServer server = null;
    SolrZkClient zkClient = null;
    ZkController zkController = null;
    try {
      server = new ZkTestServer(zkDir);
      server.run();

      AbstractZkTestCase.makeSolrZkNode(server.getZkHost());

      zkClient = new SolrZkClient(server.getZkAddress(), TIMEOUT);
      String shardsPath = "/collections/collection1/shards/shardid1";
      zkClient.makePath(shardsPath);

      addShardToZk(zkClient, shardsPath, SHARD1, URL1);
      addShardToZk(zkClient, shardsPath, SHARD2, URL2);
      addShardToZk(zkClient, shardsPath, SHARD3, URL3);

      if (DEBUG) {
        zkClient.printLayoutToStdOut();
      }

      zkController =
          new ZkController(server.getZkAddress(), TIMEOUT, 1000, "localhost", "8983", "solr");

      zkController.getZkStateReader().updateCloudState(true);
      CloudState cloudInfo = zkController.getCloudState();
      Map<String, Slice> slices = cloudInfo.getSlices("collection1");
      assertNotNull(slices);

      for (Slice slice : slices.values()) {
        Map<String, ZkNodeProps> shards = slice.getShards();
        if (DEBUG) {
          for (String shardName : shards.keySet()) {
            ZkNodeProps props = shards.get(shardName);
            System.out.println("shard:" + shardName);
            System.out.println("props:" + props.toString());
          }
        }
        assertNotNull(shards.get(SHARD1));
        assertNotNull(shards.get(SHARD2));
        assertNotNull(shards.get(SHARD3));

        ZkNodeProps props = shards.get(SHARD1);
        assertEquals(URL1, props.get(ZkStateReader.URL_PROP));
        assertEquals(TEST_NODE_NAME, props.get(ZkStateReader.NODE_NAME));

        props = shards.get(SHARD2);
        assertEquals(URL2, props.get(ZkStateReader.URL_PROP));
        assertEquals(TEST_NODE_NAME, props.get(ZkStateReader.NODE_NAME));

        props = shards.get(SHARD3);
        assertEquals(URL3, props.get(ZkStateReader.URL_PROP));
        assertEquals(TEST_NODE_NAME, props.get(ZkStateReader.NODE_NAME));
      }

    } finally {
      if (zkClient != null) {
        zkClient.close();
      }
      if (zkController != null) {
        zkController.close();
      }
      if (server != null) {
        server.shutdown();
      }
    }
  }