tests/testthat/test_base_makeLearners.R

In mlr-org/mlr: Machine Learning in R

test_that("makeLearners", {
  cls1 = c("classif.rpart", "classif.lda")
  cls2 = c("rpart", "lda")
  lrns1 = setNames(lapply(cls1, makeLearner), cls1)
  ids = c("a", "b")
  lrns1 = setNames(lapply(cls1, makeLearner), cls1)
  lrns2 = setNames(mapply(setLearnerId, lrns1, ids, SIMPLIFY = FALSE), ids)
  lrns3 = lapply(lrns1, setPredictType, predict.type = "prob")

  res = makeLearners(cls1)
  expect_equal(res, lrns1)
  res = makeLearners(cls1, ids = ids)
  expect_equal(res, lrns2)
  res = makeLearners(cls2, type = "classif")
  expect_equal(res, lrns1)
  res = makeLearners(cls2, type = "classif", predict.type = "prob")
  expect_equal(res, lrns3)
})