james-willis commented on code in PR #1146:
URL: https://github.com/apache/sedona-db/pull/1146#discussion_r3779786235
##########
python/sedonadb/tests/test_udf.py:
##########
@@ -218,3 +218,37 @@ def questionable_udf(arg):
match="Expected result of user-defined function to return array of
length 1 but got 2",
):
con.sql("SELECT questionable_udf(123) as col").to_pandas()
+
+
+def test_native_scalar_udf_export_import_roundtrip(con):
+ # A SedonaDB built-in scalar function exposes its native overload kernels
+ # via __sedonadb_scalar_udf__ (the export side of the plugin protocol).
+ # Exporting those capsules and rebuilding a UDF under a new name must
+ # produce a function whose output is identical to the built-in's, proving
+ # the native kernels survive a full export -> capsule -> import roundtrip.
+ from sedonadb._lib import sedona_native_scalar_udf
+
+ st_asbinary = con.funcs.st_asbinary._impl
+ assert hasattr(st_asbinary, "__sedonadb_scalar_udf__")
Review Comment:
done
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