liamzwbao commented on code in PR #8825:
URL: https://github.com/apache/arrow-rs/pull/8825#discussion_r2539907329


##########
parquet-variant-compute/src/variant_get.rs:
##########
@@ -1039,6 +1040,43 @@ mod test {
         arrow::array::NullArray::new(3)
     );
 
+    
perfectly_shredded_variant_array_fn!(perfectly_shredded_null_variant_array_with_int,
 || {
+        Int32Array::from(vec![Some(32), Some(64), Some(48)])
+    });
+
+    // We append null values if type miss match happens in safe mode
+    perfectly_shredded_to_arrow_primitive_test!(
+        get_variant_perfectly_shredded_null_with_type_missmatch_in_safe_mode,
+        DataType::Null,
+        perfectly_shredded_null_variant_array_with_int,
+        arrow::array::NullArray::new(3)
+    );
+
+    // We'll return an error if type miss match happens in strict mode
+    #[test]
+    fn 
get_variant_perfectly_shredded_null_as_null_with_type_missmatch_in_strict_mode()
 {
+        let array = perfectly_shredded_null_variant_array_with_int();
+        let field = Field::new("typed_value", DataType::Null, true);
+        let options = GetOptions::new()
+            .with_as_type(Some(FieldRef::from(field)))
+            .with_cast_options(CastOptions {

Review Comment:
   I remember we had similar discussion before. I vote for unifying them, and 
we don't really need the `format_options` in the `arrow::compute::CastOptions`



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