pitrou commented on code in PR #12528:
URL: https://github.com/apache/arrow/pull/12528#discussion_r871455170
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cpp/src/arrow/compute/kernels/scalar_temporal_test.cc:
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@@ -2611,6 +2611,260 @@ TEST_F(ScalarTemporalTest, TestRoundTemporal) {
CheckScalarUnary(op, unit, times, unit, round_15_years, &round_to_15_years);
}
+TEST_F(ScalarTemporalTest, TestCeilFloorRoundTemporalAmbiguous1) {
+ // Asia/Tehran switches from UTC+4:30 to UTC+3:30 on 2022-09-22 00:00:00
UTC+4:30.
+ // This causes an hour long ambiguous period in local time.
+ auto unit = timestamp(TimeUnit::MILLI, "Asia/Tehran");
+ auto options = RoundTemporalOptions(25, CalendarUnit::MINUTE);
+ const char* times = R"([
+ "2022-09-21 18:09:00", "2022-09-21 18:10:00", "2022-09-21 18:11:00",
+ "2022-09-21 18:19:00", "2022-09-21 18:20:00", "2022-09-21 18:21:00",
+ "2022-09-21 18:44:00", "2022-09-21 18:45:00", "2022-09-21 18:46:00",
+ "2022-09-21 19:09:00", "2022-09-21 19:10:00", "2022-09-21 19:11:00",
+ "2022-09-21 19:24:00", "2022-09-21 19:25:00", "2022-09-21 19:26:00",
+ "2022-09-21 19:34:00", "2022-09-21 19:35:00", "2022-09-21 19:36:00",
+ "2022-09-21 19:59:00", "2022-09-21 20:00:00", "2022-09-21 20:01:00",
+ "2022-09-21 20:24:00", "2022-09-21 20:25:00", "2022-09-21 20:26:00",
+ "2022-09-21 20:49:00", "2022-09-21 20:50:00", "2022-09-21 20:51:00"])";
+ const char* times_ceil = R"([
+ "2022-09-21 18:10:00", "2022-09-21 18:10:00", "2022-09-21 18:20:00",
Review Comment:
So, if I take `18:10`, it translates to `22:40` in local time, which is not
a multiple of 25 minutes... am I misunderstanding something?
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