dragosmg commented on a change in pull request #12431:
URL: https://github.com/apache/arrow/pull/12431#discussion_r808242823
##########
File path: r/tests/testthat/test-dplyr-funcs-datetime.R
##########
@@ -711,3 +711,17 @@ test_that("am/pm mirror lubridate", {
)
})
+test_that("dst extracts daylight savings time correctly", {
+ test_df <- tibble(
+ dates = as.POSIXct(c("2021-02-20", "2021-07-31", "2021-10-31",
"2021-01-31"), tz = "Europe/London")
+ )
+ # https://issues.apache.org/jira/browse/ARROW-13168
+ skip_on_os("windows")
+
+ compare_dplyr_binding(
+ .input %>%
+ mutate(dst = dst(dates)) %>%
+ collect(),
+ test_df
+ )
Review comment:
I'm all for testing behaviour with unsupported inputs, but how many
types is enough? Do we want unit tests for all of them?
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