[jira] [Created] (ARROW-17132) [R] Mutate in compare_dplyr_binding returns wrong type

["Rok Mihevc (Jira)" <ji...@apache.org>]

Rok Mihevc created ARROW-17132:
----------------------------------

             Summary: [R] Mutate in compare_dplyr_binding returns wrong type
                 Key: ARROW-17132
                 URL: https://issues.apache.org/jira/browse/ARROW-17132
             Project: Apache Arrow
          Issue Type: Bug
          Components: R
            Reporter: Rok Mihevc


The following:
{code:r}
df <- tibble::tibble(
  time = as.POSIXct(seq(as.Date("1999-12-31", tz = "UTC"), as.Date("2001-01-01", tz = "UTC"), by = "day"))
)

compare_dplyr_binding(
  .input %>%
    mutate(x = yday(time)) %>%
    collect(),
  df
)
{code}

Fails with:

{code:bash}
Failure (test-dplyr-funcs-datetime.R:574:3): extract wday from timestamp
`object` (`actual`) not equal to `expected` (`expected`).

`attr(actual$time, 'tzone')` is a character vector ('UTC')
`attr(expected$time, 'tzone')` is absent
Backtrace:
 1. arrow:::compare_dplyr_binding(...)
      at test-dplyr-funcs-datetime.R:574:2
 2. arrow:::expect_equal(via_batch, expected, ...)
      at tests/testthat/helper-expectation.R:115:4
 3. testthat::expect_equal(...)
      at tests/testthat/helper-expectation.R:42:4

Failure (test-dplyr-funcs-datetime.R:574:3): extract wday from timestamp
`object` (`actual`) not equal to `expected` (`expected`).

`attr(actual$time, 'tzone')` is a character vector ('UTC')
`attr(expected$time, 'tzone')` is absent
Backtrace:
 1. arrow:::compare_dplyr_binding(...)
      at test-dplyr-funcs-datetime.R:574:2
 2. arrow:::expect_equal(via_table, expected, ...)
      at tests/testthat/helper-expectation.R:129:4
 3. testthat::expect_equal(...)
      at tests/testthat/helper-expectation.R:42:4
{code}

This also happens for qday and probably other functions where input is temporal and output is numeric.



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