add testcase

datafusion/core/tests/sqllogictests/test_files/functions.slt

@@ -458,3 +458,25 @@ SELECT v1, v2, ROWNUMBER() OVER(ORDER BY v1) from test;
 
 statement ok
 drop table test
+
+# Scalar function struct
+statement ok
+create table simple_struct_test (
+    c1 boolean,
+    c2 INT,
+    c3 FLOAT,
+    c4 DOUBLE,
+    a VARCHAR,
+    b TEXT
+) as select *
+from (values
+  (true, 1,3.1,3.14,'str','text')
+);
+
+query ?
+SELECT struct(c1,c2,c3,c4,a,b) from simple_struct_test
+----
+{c0: 1, c1: 1, c2: 3.1, c3: 3.14, c4: str, c5: text}
+
+statement ok
+drop table simple_struct_test