test_that(
 desc = 'inferred pred horizon is correct',
 code = {

  expect_equal(
   infer_pred_horizon(fit_standard_pbc$fast,
                      pred_type = 'risk',
                      pred_horizon = NULL),
   fit_standard_pbc$fast$pred_horizon
  )

  expect_equal(
   infer_pred_horizon(fit_standard_pbc$fast,
                      pred_type = 'risk',
                      pred_horizon = 100),
   100
  )

  expect_equal(
   infer_pred_horizon(fit_standard_pbc$fast,
                      pred_type = 'mort',
                      pred_horizon = 100),
   1
  )

  fit_renegade <- fit_standard_pbc$fast

  ph <- fit_standard_pbc$fast$pred_horizon

  fit_renegade$pred_horizon <- NULL

  expect_error(infer_pred_horizon(fit_renegade,
                                  pred_type = 'risk',
                                  pred_horizon = NULL),
               regexp = 'could not be found')

  fit_standard_pbc$fast$pred_horizon <- ph

 }
)


test_that(
 desc = 'inferred outcome type is correct',
 code = {

  pbc$surv_y <- Surv(pbc_orsf$time, pbc_orsf$status)

  expect_equal(infer_tree_type(c('time', 'status'), pbc), 'survival')
  expect_equal(infer_tree_type('surv_y', pbc), 'survival')
  expect_equal(infer_tree_type('age', pbc), 'regression')
  expect_equal(infer_tree_type('sex', pbc), 'classification')

 }
)