tests/testthat/_snaps/case-when.md

In hadley/dplyr: A Grammar of Data Manipulation

.default isn't part of recycling

Code
  case_when(FALSE ~ 1L, .default = 2:5)
Condition
  Error in `case_when()`:
  ! `.default` must have size 1, not size 4.

.default is part of common type computation

Code
  case_when(TRUE ~ 1L, .default = "x")
Condition
  Error in `case_when()`:
  ! Can't combine `..1 (right)` <integer> and `.default` <character>.

passes through .size correctly

Code
  case_when(TRUE ~ 1:2, .size = 3)
Condition
  Error in `case_when()`:
  ! Can't recycle `..1 (right)` (size 2) to size 3.

invalid type errors are correct (#6261) (#6206)

Code
  case_when(TRUE ~ 1, TRUE ~ "x")
Condition
  Error in `case_when()`:
  ! Can't combine `..1 (right)` <double> and `..2 (right)` <character>.

NULL formula element throws meaningful error

Code
  case_when(1 ~ NULL)
Condition
  Error in `case_when()`:
  ! `..1 (right)` must be a vector, not `NULL`.

Code
  case_when(NULL ~ 1)
Condition
  Error in `case_when()`:
  ! `..1 (left)` must be a logical vector, not `NULL`.

throws chained errors when formula evaluation fails

Code
  case_when(1 ~ 2, 3 ~ stop("oh no!"))
Condition
  Error in `case_when()`:
  ! Failed to evaluate the right-hand side of formula 2.
  Caused by error:
  ! oh no!

Code
  case_when(1 ~ 2, stop("oh no!") ~ 4)
Condition
  Error in `case_when()`:
  ! Failed to evaluate the left-hand side of formula 2.
  Caused by error:
  ! oh no!

case_when() give meaningful errors

Code
  (expect_error(case_when(c(TRUE, FALSE) ~ 1:3, c(FALSE, TRUE) ~ 1:2)))
Output
  <error/vctrs_error_incompatible_size>
  Error in `case_when()`:
  ! Can't recycle `..1 (left)` (size 2) to match `..1 (right)` (size 3).
Code
  (expect_error(case_when(c(TRUE, FALSE) ~ 1, c(FALSE, TRUE, FALSE) ~ 2, c(FALSE,
    TRUE, FALSE, NA) ~ 3)))
Output
  <error/vctrs_error_incompatible_size>
  Error in `case_when()`:
  ! Can't recycle `..1 (left)` (size 2) to match `..2 (left)` (size 3).
Code
  (expect_error(case_when(50 ~ 1:3)))
Output
  <error/rlang_error>
  Error in `case_when()`:
  ! `..1 (left)` must be a logical vector, not a double vector.
Code
  (expect_error(case_when(paste(50))))
Output
  <error/rlang_error>
  Error in `case_when()`:
  ! Case 1 (`paste(50)`) must be a two-sided formula, not the string "50".
Code
  (expect_error(case_when(y ~ x, paste(50))))
Output
  <error/rlang_error>
  Error in `case_when()`:
  ! Case 2 (`paste(50)`) must be a two-sided formula, not the string "50".
Code
  (expect_error(case_when()))
Output
  <error/rlang_error>
  Error in `case_when()`:
  ! At least one condition must be supplied.
Code
  (expect_error(case_when(NULL)))
Output
  <error/rlang_error>
  Error in `case_when()`:
  ! At least one condition must be supplied.
Code
  (expect_error(case_when(~ 1:2)))
Output
  <error/rlang_error>
  Error in `case_when()`:
  ! Case 1 (`~1:2`) must be a two-sided formula.

hadley/dplyr documentation built on Nov. 6, 2024, 4:48 p.m.