Add test for ComputeError() for #298.
Add test for ComputeError() for #298.


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