tests/testthat/test_mlr_learners_clust_protoclust.R

In mlr3cluster: Cluster Extension for 'mlr3'

skip_if_not_installed("protoclust")

test_that("autotest", {
  learner = lrn("clust.protoclust")
  expect_learner(learner)
  task = generate_tasks(learner)
  learner$train(task[[1L]])
  expect_class(learner$model, "protoclust")
  expect_warning(learner$predict(task[[1L]]), "doesn't predict on new data")
})

test_that("Learner properties are respected", {
  task = tsk("usarrests")
  learner = lrn("clust.protoclust")
  expect_learner(learner, task)

  # test on multiple paramsets
  parset_list = list(
    list(k = 3L),
    list(k = 5L),
    list(k = 3L, method = "manhattan")
  )

  for (parset in parset_list) {
    learner$param_set$values = parset

    p = suppressWarnings(learner$train(task)$predict(task))
    expect_prediction_clust(p, learner)
  }
})