expose row buffer size

Author: kelvich

tokio-postgres/src/row.rs

@@ -204,6 +204,11 @@ impl Row {
             Err(Error::from_sql(Box::new(WrongFormat {}), idx))
         }
     }
+
+    /// Row byte size
+    pub fn body_len(&self) -> usize {
+        self.body.buffer().len()
+    }
 }
 
 impl AsName for SimpleColumn {

tokio-postgres/tests/test/main.rs

@@ -277,6 +277,7 @@ async fn query_raw_txt() {
 
     assert_eq!(rows.len(), 1);
     assert_eq!(rows[0].get::<_, &str>(0), "42");
+    assert!(rows[0].body_len() > 0);
 }
 
 #[tokio::test]