dragosmg commented on a change in pull request #12402:
URL: https://github.com/apache/arrow/pull/12402#discussion_r837852972
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File path: r/tests/testthat/test-dplyr-funcs-datetime.R
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@@ -118,6 +118,51 @@ test_that("errors in strptime", {
)
})
+test_that("strptime returns NA when format doesn't match the data", {
+ df <- tibble(
+ str_date = c("2022-02-07", "2012/02-07", "1975/01-02", "1981/01-07")
+ )
+
+ expect_equal(
+ df %>%
+ arrow_table() %>%
+ mutate(
+ r_obj_parsed_date = strptime("03-27/2022", format = "%m-%d/%Y"),
+ r_obj_parsed_na = strptime("03-27/2022", format = "Y%-%m-%d")) %>%
+ collect(),
+ tibble(
+ str_date = c("2022-02-07", "2012/02-07", "1975/01-02", "1981/01-07"),
+ r_obj_parsed_date = as.POSIXct(rep("2022-03-27", 4)),
+ r_obj_parsed_na = as.POSIXct(rep(NA, 4))
+ ),
+ ignore_attr = "tzone"
+ )
Review comment:
Nope, `base::strptime()` and the Arrow binding return different types.
`ignore_attr` cannot help here since that covers only classes, not types.
`base::strptime()` returns a list (`POSIXlt`), while the Arrow binding returns
a `double` (`POSIXct`) vector => `compare_dplyr_binding()` would always fail.
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