test: add array_sort sqllogictest for null and invalid types

Author: v-lilunlin

datafusion/sqllogictest/test_files/array.slt

@@ -2265,6 +2265,36 @@ select array_sort([]);
 ----
 []
 
+# test with null arguments
+query error
+select array_sort(NULL);
+----
+DataFusion error: Error during planning: Failed to coerce arguments to satisfy a call to 'array_sort' function: coercion from [Null] to the signature OneOf([ArraySignature(Array { arguments: [Array], array_coercion: None }), ArraySignature(Array { arguments: [Array, DataType(Utf8)], array_coercion: None }), ArraySignature(Array { arguments: [Array, DataType(Utf8), DataType(Utf8)], array_coercion: None })]) failed No function matches the given name and argument types 'array_sort(Null)'. You might need to add explicit type casts.
+	Candidate functions:
+	array_sort(array)
+	array_sort(array, Utf8)
+	array_sort(array, Utf8, Utf8)
+
+
+query ?
+select array_sort([1, 3, null, 5, NULL, -5], NULL);
+----
+NULL
+
+query ??
+select array_sort([1, 3, null, 5, NULL, -5], 'DESC', NULL), array_sort([1, 3, null, 5, NULL, -5], 'ASC', NULL);
+----
+NULL NULL
+
+query ??
+select array_sort([1, 3, null, 5, NULL, -5], NULL, 'NULLS FIRST'), array_sort([1, 3, null, 5, NULL, -5], NULL, 'NULLS LAST');
+----
+NULL NULL
+
+## test with argument of incorrect types
+query error DataFusion error: Execution error: the second parameter of array_sort expects DESC or ASC
+select array_sort([1, 3, null, 5, NULL, -5], 1), array_sort([1, 3, null, 5, NULL, -5], 'DESC', 1), array_sort([1, 3, null, 5, NULL, -5], 1, 1);
+
 # test with empty row, the row that does not match the condition has row count 0
 statement ok
 create table t1(a int, b int) as values (100, 1), (101, 2), (102, 3), (101, 2);