gene-bordegaray commented on code in PR #23520:
URL: https://github.com/apache/datafusion/pull/23520#discussion_r3615482123


##########
datafusion/ffi/src/physical_expr/partitioning.rs:
##########
@@ -99,5 +185,50 @@ mod tests {
                 assert_eq!(partitioning, returned);
             }
         }
+
+        Ok(())
+    }
+
+    #[test]
+    fn round_trip_ffi_range_partitioning_compound_key() -> Result<()> {
+        let a = Arc::new(Column::new("a", 0)) as Arc<dyn PhysicalExpr>;

Review Comment:
   nit: could we use the helper function `range_partitioning()` to reduce 
boiler plate in the tests here. Just changing the partitioning that is built in 
there to compound 🤔 



##########
datafusion/ffi/src/plan_properties.rs:
##########
@@ -282,6 +283,29 @@ mod tests {
         ))
     }
 
+    fn create_range_test_props() -> Result<PlanProperties> {
+        use arrow::datatypes::{DataType, Field, Schema};
+        use datafusion_common::{ScalarValue, SplitPoint};
+        use datafusion_physical_expr::{LexOrdering, RangePartitioning};
+

Review Comment:
   mega nit: I prfer to keep imports at the module level to keep tests clean 
@timsaucer do yo uhave any preference?



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