public void testMapping() throws Exception {
Cluster cluster1 = newCluster("cluster1", "colo1");
Cluster cluster2 = newCluster("cluster2", "colo1");
Cluster cluster3 = newCluster("cluster3", "colo2");
ConfigurationStore store = ConfigurationStore.get();
store.publish(EntityType.CLUSTER, cluster1);
store.publish(EntityType.CLUSTER, cluster2);
store.publish(EntityType.CLUSTER, cluster3);
ColoClusterRelation relation = ColoClusterRelation.get();
Set<String> clusters = relation.getClusters("colo1");