tustvold commented on code in PR #3016:
URL: https://github.com/apache/arrow-rs/pull/3016#discussion_r1018353065
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arrow-cast/src/cast.rs:
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@@ -4090,6 +4291,160 @@ mod tests {
assert!(c.is_null(2));
}
+ #[test]
+ fn test_cast_timestamp_to_time64() {
+ // test timestamp secs
+ let a = TimestampSecondArray::from(vec![Some(86405), Some(1), None])
+ .with_timezone("+01:00".to_string());
+ let array = Arc::new(a) as ArrayRef;
+ let b = cast(&array,
&DataType::Time64(TimeUnit::Microsecond)).unwrap();
+ let c = b.as_any().downcast_ref::<Time64MicrosecondArray>().unwrap();
+ assert_eq!(3605000000, c.value(0));
+ assert_eq!(3601000000, c.value(1));
+ assert!(c.is_null(2));
+ let b = cast(&array, &DataType::Time64(TimeUnit::Nanosecond)).unwrap();
+ let c = b.as_any().downcast_ref::<Time64NanosecondArray>().unwrap();
+ assert_eq!(3605000000000, c.value(0));
+ assert_eq!(3601000000000, c.value(1));
+ assert!(c.is_null(2));
Review Comment:
Isn't the timestamp behaviour a bug tracked by #1936?
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