tests/testthat/_snaps/parameters.md

In tidymodels/dials: Tools for Creating Tuning Parameter Values

parameters_const() input checks

Code
  parameters_constr(name = 2)
Condition
  Error:
  ! `name` must be a character vector, not the number 2.

Code
  ab <- c("a", "b")
  parameters_constr(ab, id = c("a", "a"), ab, ab, ab)
Condition
  Error:
  x Element id should have unique values.
  i Duplicates exist for item: a

Code
  ab <- c("a", "b")
  parameters_constr(ab, ab, ab, ab, ab, object = "not a params list")
Condition
  Error:
  ! `object` must be a list of <param> objects.

Code
  ab <- c("a", "b")
  parameters_constr(ab, ab, ab, ab, ab, object = list(penalty(), "not a param"))
Condition
  Error:
  ! `object` elements in the following positions must be `NA` or a <param> object: 2.

Code
  ab <- c("a", "b")
  parameters_constr("a", ab, ab, ab, ab, list(penalty(), mtry()))
Condition
  Error:
  ! All inputs must contain contain the same number of elements.

Code
  ab <- c("a", "b")
  parameters_constr(ab, ab, ab, ab, ab, list(penalty()))
Condition
  Error:
  ! All inputs must contain contain the same number of elements.

create from lists of param objects

Code
  parameters(list(a = mtry(), a = penalty()))
Condition
  Error in `parameters()`:
  x Element id should have unique values.
  i Duplicates exist for item: a

Code
  parameters(list(a = mtry, a = penalty()))
Condition
  Error in `parameters()`:
  ! The objects should all be <param> objects.

updating

Code
  update(p_1, new_pen)
Condition
  Error in `update()`:
  ! All arguments should be named.

Code
  update(p_1, penalty = 1:2)
Condition
  Error in `update()`:
  ! At least one parameter is not a dials parameter object or NA: penalty.

Code
  update(p_1, not_penalty = 1:2)
Condition
  Error in `update()`:
  ! At least one parameter does not match any id's in the set: not_penalty.

Code
  update(p_1, penalty(), mtry = mtry(3:4))
Condition
  Error in `update()`:
  ! All arguments should be named.

Code
  update(p_1)
Condition
  Error in `update()`:
  ! Please supply at least one parameter object.

printing

Code
  parameters(list(mtry(), penalty()))
Message
  Collection of 2 parameters for tuning

   identifier    type    object
         mtry    mtry nparam[?]
      penalty penalty nparam[+]

  Parameters needing finalization:
  # Randomly Selected Predictors ('mtry')

  See `?dials::finalize()` or `?dials::update.parameters()` for more information.

Code
  param <- ex_params[1, ]
  structure(param, class = c("parameters", class(param)))
Message
  Collection of 1 parameters for tuning

   identifier   type  object
       trials trials missing

  The parameter `trials` needs a <param> object.

Code
  param <- ex_params[1:2, ]
  structure(param, class = c("parameters", class(param)))
Message
  Collection of 2 parameters for tuning

   identifier   type  object
       trials trials missing
        rules  rules missing

  The parameters `trials` and `rules` need <param> objects.

Code
  param <- ex_params[1:3, ]
  structure(param, class = c("parameters", class(param)))
Message
  Collection of 3 parameters for tuning

   identifier   type  object
       trials trials missing
        rules  rules missing
        costs  costs missing

  The parameters `trials`, `rules`, and `costs` need <param> objects.

parameters.default

Code
  parameters(tibble::as_tibble(mtcars))
Condition
  Error in `parameters()`:
  ! <parameters> objects cannot be created from a tibble.

tidymodels/dials documentation built on June 10, 2025, 9:34 p.m.