tests/testthat/_snaps/count-tally.md

In dplyr: A Grammar of Data Manipulation

name must be string

Code
  count(df, x, name = 1)
Condition
  Error in `tally()`:
  ! `name` must be a single string, not the number 1.

Code
  count(df, x, name = letters)
Condition
  Error in `tally()`:
  ! `name` must be a single string, not a character vector.

can only explicitly chain together multiple tallies

Code
  df <- data.frame(g = c(1, 1, 2, 2), n = 1:4)
  count(df, g, wt = n)
Output
    g n
  1 1 3
  2 2 7
Code
  count(count(df, g, wt = n), wt = n)
Output
     n
  1 10
Code
  count(df, n)
Message
  Storing counts in `nn`, as `n` already present in input
  i Use `name = "new_name"` to pick a new name.
Output
    n nn
  1 1  1
  2 2  1
  3 3  1
  4 4  1

count() owns errors (#6139)

Code
  (expect_error(count(mtcars, new = 1 + "")))
Output
  <error/dplyr:::mutate_error>
  Error in `count()`:
  i In argument: `new = 1 + ""`.
  Caused by error in `1 + ""`:
  ! non-numeric argument to binary operator
Code
  (expect_error(count(mtcars, wt = 1 + "")))
Output
  <error/rlang_error>
  Error in `count()`:
  i In argument: `n = base::sum(1 + "", na.rm = TRUE)`.
  Caused by error in `1 + ""`:
  ! non-numeric argument to binary operator

count() wt = n() is deprecated

Code
  count(df, a, wt = n())
Condition
  Warning:
  `wt = n()` was deprecated in dplyr 1.0.1.
  i You can now omit the `wt` argument.
Output
  # A tibble: 5 x 2
        a     n
    <int> <int>
  1     1     1
  2     2     1
  3     3     1
  4     4     1
  5     5     1

tally() owns errors (#6139)

Code
  (expect_error(tally(mtcars, wt = 1 + "")))
Output
  <error/rlang_error>
  Error in `tally()`:
  i In argument: `n = base::sum(1 + "", na.rm = TRUE)`.
  Caused by error in `1 + ""`:
  ! non-numeric argument to binary operator

tally() wt = n() is deprecated

Code
  tally(df, wt = n())
Condition
  Warning:
  `wt = n()` was deprecated in dplyr 1.0.1.
  i You can now omit the `wt` argument.
Output
  # A tibble: 1 x 1
        n
    <int>
  1     5

.drop is defunct

Code
  add_count(df, f, .drop = FALSE)
Condition
  Error:
  ! The `.drop` argument of `add_count()` was deprecated in dplyr 1.0.0 and is now defunct.

add_count() wt = n() is deprecated

Code
  add_count(df, a, wt = n())
Condition
  Warning:
  `wt = n()` was deprecated in dplyr 1.0.1.
  i You can now omit the `wt` argument.
Output
  # A tibble: 5 x 2
        a     n
    <int> <int>
  1     1     1
  2     2     1
  3     3     1
  4     4     1
  5     5     1

add_count() owns errors (#6139)

Code
  (expect_error(add_count(mtcars, new = 1 + "")))
Output
  <error/dplyr:::mutate_error>
  Error in `add_count()`:
  i In argument: `new = 1 + ""`.
  Caused by error in `1 + ""`:
  ! non-numeric argument to binary operator
Code
  (expect_error(add_count(mtcars, wt = 1 + "")))
Output
  <error/dplyr:::mutate_error>
  Error in `add_count()`:
  i In argument: `n = base::sum(1 + "", na.rm = TRUE)`.
  Caused by error in `1 + ""`:
  ! non-numeric argument to binary operator

add_tally() owns errors (#6139)

Code
  (expect_error(add_tally(mtcars, wt = 1 + "")))
Output
  <error/dplyr:::mutate_error>
  Error in `add_tally()`:
  i In argument: `n = base::sum(1 + "", na.rm = TRUE)`.
  Caused by error in `1 + ""`:
  ! non-numeric argument to binary operator

add_tally() wt = n() is deprecated

Code
  add_tally(df, wt = n())
Condition
  Warning:
  `wt = n()` was deprecated in dplyr 1.0.1.
  i You can now omit the `wt` argument.
Output
  # A tibble: 5 x 2
        a     n
    <int> <int>
  1     1     5
  2     2     5
  3     3     5
  4     4     5
  5     5     5

dplyr documentation built on Feb. 3, 2026, 9:08 a.m.