emkornfield commented on code in PR #1617:
URL: https://github.com/apache/iceberg-rust/pull/1617#discussion_r2289775400
##########
crates/iceberg/src/arrow/schema.rs:
##########
@@ -1717,6 +1734,60 @@ mod tests {
}
}
+ #[test]
+ fn test_unsigned_type_casting() {
+ // Test UInt32 → Int64 casting
+ {
+ let arrow_field = Field::new("test", DataType::UInt32,
false).with_metadata(
+ HashMap::from([(PARQUET_FIELD_ID_META_KEY.to_string(),
"1".to_string())]),
+ );
+ let arrow_schema = ArrowSchema::new(vec![arrow_field]);
+
+ let iceberg_schema =
arrow_schema_to_schema(&arrow_schema).unwrap();
+
+ // Verify UInt32 was cast to Long (int64)
+ let iceberg_field =
iceberg_schema.as_struct().fields().first().unwrap();
+ assert!(matches!(
+ iceberg_field.field_type.as_ref(),
+ Type::Primitive(PrimitiveType::Long)
+ ));
+ }
+
+ // Test UInt8/UInt16 → Int32 casting
+ {
+ let arrow_field = Field::new("test", DataType::UInt8,
false).with_metadata(
Review Comment:
nit: this doesn't look like this is testing UInt16?
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