rluvaton commented on code in PR #6893:
URL: https://github.com/apache/arrow-rs/pull/6893#discussion_r1888681995
##########
arrow-select/src/concat.rs:
##########
@@ -851,4 +1018,169 @@ mod tests {
assert_eq!(array.null_count(), 10);
assert_eq!(array.logical_null_count(), 10);
}
+
+ #[test]
+ fn concat_dictionary_list_array_simple() {
+ let scalars = vec![
+ create_single_row_list_of_dict(vec![Some("a")]),
+ create_single_row_list_of_dict(vec![Some("a")]),
+ create_single_row_list_of_dict(vec![Some("b")]),
+ ];
+
+ let arrays = scalars.iter().map(|a| a as &(dyn
Array)).collect::<Vec<_>>();
+ let concat_res = concat(arrays.as_slice()).unwrap();
+
+ let expected_list = create_list_of_dict(vec![
+ // Row 1
+ Some(vec![Some("a")]),
+ Some(vec![Some("a")]),
+ Some(vec![Some("b")]),
+ ]);
+
+ let list = concat_res.as_list::<i32>();
+
+ // Assert that the list is equal to the expected list
+ list.iter().zip(expected_list.iter()).for_each(|(a, b)| {
+ assert_eq!(a, b);
+ });
+
+ let dict = list
+ .values()
+ .as_dictionary::<Int32Type>()
+ .downcast_dict::<StringArray>()
+ .unwrap();
+ println!("{:?}", dict);
+
+ assert_dictionary_has_unique_values::<_, StringArray>(
+ list.values().as_dictionary::<Int32Type>(),
+ );
+ }
+
+ #[test]
+ fn concat_dictionary_list_array_with_multiple_rows() {
Review Comment:
this test fails because there are more keys than there are values, which is
weird, see why here:
- https://github.com/apache/arrow-rs/issues/6888#issuecomment-2548648179
Should I remove this test or what?
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