paddyhoran commented on a change in pull request #7500:
URL: https://github.com/apache/arrow/pull/7500#discussion_r444443777



##########
File path: rust/parquet/src/record/api.rs
##########
@@ -893,16 +893,6 @@ mod tests {
         assert_eq!(row, Field::TimestampMillis(1238544060000));
     }
 
-    #[test]
-    #[should_panic(expected = "Expected non-negative milliseconds when 
converting Int96")]
-    fn test_row_convert_int96_invalid() {
-        // INT96 value does not depend on logical type
-        let descr = make_column_descr![PhysicalType::INT96, LogicalType::NONE];
-
-        let value = Int96::from(vec![0, 0, 0]);
-        Field::convert_int96(&descr, value);
-    }
-

Review comment:
       Are there other tests we should be adding to test the effect of allowing 
negative milliseconds to flow through?  
   
   I'm not that familiar with Parquet but I see things like 
[this](https://github.com/apache/arrow/blob/master/rust/parquet/src/record/api.rs#L584)
 which seem to indicate that we might be relying on milliseconds being 
non-negative.




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