fix bug in test initialization
fix bug in test initialization

datachand/mlpack,Azizou/mlpack,Azizou/mlpack,minhpqn/mlpack,palashahuja/mlpack,palashahuja/mlpack,datachand/mlpack,trungda/mlpack,theranger/mlpack,trungda/mlpack,ajjl/mlpack,Azizou/mlpack,minhpqn/mlpack,darcyliu/mlpack,darcyliu/mlpack,chenmoshushi/mlpack,bmswgnp/mlpack,ranjan1990/mlpack,BookChan/mlpack,ranjan1990/mlpack,chenmoshushi/mlpack,bmswgnp/mlpack,ranjan1990/mlpack,thirdwing/mlpack,ajjl/mlpack,bmswgnp/mlpack,BookChan/mlpack,chenmoshushi/mlpack,stereomatchingkiss/mlpack,lezorich/mlpack,stereomatchingkiss/mlpack,theranger/mlpack,thirdwing/mlpack,erubboli/mlpack,erubboli/mlpack,darcyliu/mlpack,ersanliqiao/mlpack,trungda/mlpack,lezorich/mlpack,thirdwing/mlpack,ajjl/mlpack,stereomatchingkiss/mlpack,datachand/mlpack,lezorich/mlpack,erubboli/mlpack,minhpqn/mlpack,BookChan/mlpack,theranger/mlpack,ersanliqiao/mlpack,ersanliqiao/mlpack,palashahuja/mlpack