TransportClient tClient = (TransportClient) client;
ImmutableList<TransportAddress> adresses = tClient.transportAddresses();
assertThat("Nodes urls must not be empty...", adresses, not(emptyCollectionOf(TransportAddress.class)));
// Testing if we are really connected to a cluster node
assertThat("We should be connected at least to one node.", tClient.connectedNodes(), not(emptyCollectionOf(DiscoveryNode.class)));
DiscoveryNode node = tClient.connectedNodes().get(0);
assertThat(node.getName(), is("junit.node.transport"));
assertThat("We should be connected to the master node.", node.isMasterNode(), is(true));
}