Provides a Testbench for comparison of prediction models. This package is inspired from 'imputeTestbench' package < https://cran.r-project.org/package=imputeTestbench>. It compares prediction models with reference to RMSE, MAE or MAPE parameters. It allows to add new proposed methods to test bench and to compare with other methods. The function 'prediction_append()' allows to add multiple numbers of methods to the existing methods available in test bench. One/two step ahead prediction is also possible in the testbench.