friendlymatthew commented on code in PR #7757:
URL: https://github.com/apache/arrow-rs/pull/7757#discussion_r2167737889


##########
parquet-variant/src/variant/object.rs:
##########
@@ -245,22 +255,35 @@ mod tests {
         assert!(!variant_obj.is_empty());
 
         // Test field access
-        let active_field = variant_obj.field_by_name("active").unwrap();
+        let active_field = variant_obj.get("active");
         assert!(active_field.is_some());
         assert_eq!(active_field.unwrap().as_boolean(), Some(true));
 
-        let age_field = variant_obj.field_by_name("age").unwrap();
+        let age_field = variant_obj.get("age");
         assert!(age_field.is_some());
         assert_eq!(age_field.unwrap().as_int8(), Some(42));
 
-        let name_field = variant_obj.field_by_name("name").unwrap();
+        let name_field = variant_obj.get("name");
         assert!(name_field.is_some());
         assert_eq!(name_field.unwrap().as_string(), Some("hello"));
 
         // Test non-existent field
-        let missing_field = variant_obj.field_by_name("missing").unwrap();
+        let missing_field = variant_obj.get("missing");
         assert!(missing_field.is_none());
 
+        // Fixme: This assertion will panic! That is not good
+        // let missing_field_name = variant_obj.field_name(3);
+        // assert!(missing_field_name.is_none());

Review Comment:
   Here is the issue for this bug: 
https://github.com/apache/arrow-rs/issues/7784
   
   This behavior doesn't occur when using a `VariantBuilder` (since the 
underlying `metadata` is slightly different), but it's still important to 
figure out why this test case is failing.



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