test(12733): update metadata preservation test, for new contract (a.k…

….a. cast preserves field metadata)
influxdata · Nov 9, 2024 · 141c3f0 · 141c3f0
1 parent f04ed2b
commit 141c3f0
Showing 1 changed file with 2 additions and 4 deletions.
diff --git a/datafusion/expr/src/expr_schema.rs b/datafusion/expr/src/expr_schema.rs
@@ -682,13 +682,11 @@ mod tests {
             .with_data_type(DataType::Int32)
             .with_metadata(meta.clone());
 
-        // col and alias should be metadata-preserving
+        // col, alias, and cast should be metadata-preserving
         assert_eq!(meta, expr.metadata(&schema).unwrap());
         assert_eq!(meta, expr.clone().alias("bar").metadata(&schema).unwrap());
-
-        // cast should drop input metadata since the type has changed
         assert_eq!(
-            HashMap::new(),
+            meta,
             expr.clone()
                 .cast_to(&DataType::Int64, &schema)
                 .unwrap()