should be it

external/duckdb/test/geoparquet/unsupported.test

@@ -0,0 +1,40 @@
+# name: test/geoparquet/unsupported.test
+# group: [geoparquet]
+
+require spatial
+
+require parquet
+
+#------------------------------------------------------------------------------
+# Test unsupported geometry type
+#------------------------------------------------------------------------------
+# This is now ok, but we dont write the geoparquet metadata
+
+statement ok
+COPY (SELECT 'POINT ZM (0 1 2 3)'::GEOMETRY as geometry) TO '__TEST_DIR__/t1.parquet' (FORMAT 'parquet');
+
+# Not a geoparquet file
+query I
+SELECT (decode(value)) as col
+FROM parquet_kv_metadata('__TEST_DIR__/t1.parquet');
+----
+
+# But still a normal parquet file
+query I
+SELECT st_astext(st_geomfromwkb(geometry)) FROM '__TEST_DIR__/t1.parquet';
+----
+POINT ZM (0 1 2 3)
+
+statement ok
+COPY (SELECT 'POINT M (0 1 2)'::GEOMETRY as geometry) TO '__TEST_DIR__/t1.parquet' (FORMAT 'parquet');
+
+query I
+SELECT (decode(value)) as col
+FROM parquet_kv_metadata('__TEST_DIR__/t1.parquet');
+----
+
+# But still a normal parquet file
+query I
+SELECT st_astext(st_geomfromwkb(geometry)) FROM '__TEST_DIR__/t1.parquet';
+----
+POINT M (0 1 2)