alamb commented on code in PR #5340:
URL: https://github.com/apache/arrow-rs/pull/5340#discussion_r1477311979
##########
arrow-cast/src/cast.rs:
##########
@@ -7609,6 +7626,36 @@ mod tests {
assert_eq!(expected.values(), actual.values());
}
+ #[test]
+ fn test_cast_utf8_to_list() {
+ // DataType::List
+ let array = Arc::new(StringArray::from(vec!["5"])) as ArrayRef;
+ let field = Arc::new(Field::new("", DataType::Int32, false));
+ let list_array = cast(&array, &DataType::List(field.clone())).unwrap();
+ let actual = list_array.as_any().downcast_ref::<ListArray>().unwrap();
+ let expect = ListArray::from_iter_primitive::<Int32Type, _,
_>([Some([Some(5)])]);
+ assert_eq!(&expect.value(0), &actual.value(0));
+
+ // DataType::LargeList
+ let list_array = cast(&array,
&DataType::LargeList(field.clone())).unwrap();
+ let actual = list_array
+ .as_any()
+ .downcast_ref::<LargeListArray>()
+ .unwrap();
+ let expect = LargeListArray::from_iter_primitive::<Int32Type, _,
_>([Some([Some(5)])]);
+ assert_eq!(&expect.value(0), &actual.value(0));
Review Comment:
This results in a compile error:
```
7644 | assert_eq!(expect.value(0), actual.value(0));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ move occurs
because `*right_val` has type `std::sync::Arc<dyn arrow_array::Array>`, which
does not implement the `Copy` trait
|
```
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