public void testTwoLevelClustersUnbalanced(){
goodTree = new ClusterHead();
ClusterNode c1 = new ClusterNode();
c1.addNode(nodes.get(0));
c1.addNode(nodes.get(1));
ClusterNode c2 = new ClusterNode();
c2.addNode(nodes.get(2));
ClusterNode parentOfC1And2 = new ClusterNode();