[SPARK-36037][TESTS][FOLLOWUP] Avoid wrong test results on daylight saving time
### What changes were proposed in this pull request?
Only use the zone ids that has no daylight saving for testing `localtimestamp`
### Why are the changes needed?
https://github.com/apache/spark/pull/33346#discussion_r670135296 MaxGekk suggests that we should avoid wrong results if possible.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Unit test
Closes #33354 from gengliangwang/FIxDST.
Authored-by: Gengliang Wang <gengliang@apache.org>
Signed-off-by: Max Gekk <max.gekk@gmail.com>
(cherry picked from commit 564d3de7c6
)
Signed-off-by: Max Gekk <max.gekk@gmail.com>
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@ -97,7 +97,8 @@ class DateExpressionsSuite extends SparkFunSuite with ExpressionEvalHelper {
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}
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test("datetime function localtimestamp") {
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outstandingTimezonesIds.foreach { zid =>
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// Verify with multiple outstanding time zones which has no daylight saving time.
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Seq("UTC", "Africa/Dakar", "Asia/Hong_Kong").foreach { zid =>
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val zoneId = DateTimeUtils.getZoneId(zid)
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val ct = LocalTimestamp(Some(zid)).eval(EmptyRow).asInstanceOf[Long]
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val t1 = DateTimeUtils.localDateTimeToMicros(LocalDateTime.now(zoneId))
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