recur-on-position.md
In almanac: Tools for Working with Recurrence Rules

cannot set the position twice

Code
  daily() %>% recur_on_position(1) %>% recur_on_position(1)
Condition
  Error in `recur_on_position()`:
  ! The "position" rule is already set and can't be set twice.

cannot set the position twice within the same call

Code
  daily() %>% recur_on_position(c(1, 1))
Condition
  Error in `recur_on_position()`:
  ! `n` can't contain duplicate values.
  i Duplicate values were detected at location: 1 and 2.

position is validated depending on the frequency

Code
  (expect_error(daily() %>% recur_on_position(2)))
Output
  <error/rlang_error>
  Error in `recur_on_position()`:
  ! For a "daily" frequency, the absolute value of `n` can't be larger than 1.
Code
  (expect_error(daily() %>% recur_on_position(-2)))
Output
  <error/rlang_error>
  Error in `recur_on_position()`:
  ! For a "daily" frequency, the absolute value of `n` can't be larger than 1.
Code
  (expect_error(weekly() %>% recur_on_position(8)))
Output
  <error/rlang_error>
  Error in `recur_on_position()`:
  ! For a "weekly" frequency, the absolute value of `n` can't be larger than 7.
Code
  (expect_error(weekly() %>% recur_on_position(-8)))
Output
  <error/rlang_error>
  Error in `recur_on_position()`:
  ! For a "weekly" frequency, the absolute value of `n` can't be larger than 7.
Code
  (expect_error(monthly() %>% recur_on_position(32)))
Output
  <error/rlang_error>
  Error in `recur_on_position()`:
  ! For a "monthly" frequency, the absolute value of `n` can't be larger than 31.
Code
  (expect_error(monthly() %>% recur_on_position(-32)))
Output
  <error/rlang_error>
  Error in `recur_on_position()`:
  ! For a "monthly" frequency, the absolute value of `n` can't be larger than 31.
Code
  (expect_error(yearly() %>% recur_on_position(367)))
Output
  <error/rlang_error>
  Error in `recur_on_position()`:
  ! For a "yearly" frequency, the absolute value of `n` can't be larger than 366.
Code
  (expect_error(yearly() %>% recur_on_position(-367)))
Output
  <error/rlang_error>
  Error in `recur_on_position()`:
  ! For a "yearly" frequency, the absolute value of `n` can't be larger than 366.

`n` must be castable to an integer

Code
  yearly() %>% recur_on_position(21.5)
Condition
  Error in `recur_on_position()`:
  ! Can't convert from `n` <double> to <integer> due to loss of precision.
  * Locations: 1

`n` can't be missing

Code
  yearly() %>% recur_on_position(NA_integer_)
Condition
  Error in `recur_on_position()`:
  ! `n` can't contain missing values.
  i Missing values were detected at locations: 1.