def test_optimize(self):
link = ClusterLinkage(self.user_ink_data)
link.optimize_cluster_num(self.label_ink_pairs)
clustered_data = link.clustered_data()
cdtw = ClassifierDTW()
cdtw.train(clustered_data)
accuracy,_,_ = cdtw.test(self.label_ink_pairs)
self.assertGreater(accuracy, 92.0)
