Updating some of the tests files

src/helper_files/helper.pl

src/methods/adaboost/adaboost_test.pl

src/methods/linear_SVM/linear_SVM_test.pl

src/methods/lmnn/lmnn_test.pl

...s/local_coordinate_coding/local_coordinate_coding_test.pl

src/methods/logistic_regression/logistic_regression_test.pl

src/methods/lsh/lsh_test.pl

src/methods/mean_shift/mean_shift_test.pl

...ods/naive_bayes_classifier/naive_bayes_classifier_test.pl

src/methods/nca/nca_test.pl

src/methods/nmf/nmf_test.pl

src/methods/pca/pca_test.pl

src/methods/perceptron/perceptron_test.pl

src/methods/radical/radical_test.pl

src/methods/random_forest/random_forest_test.pl