Make test happy

Signed-off-by: Chojan Shang <[email protected]>

Author: PsiACE

datafusion/core/tests/dataframe/dataframe_functions.rs

@@ -111,7 +111,7 @@ async fn test_fn_ascii() -> Result<()> {
 
 #[tokio::test]
 async fn test_fn_bit_length() -> Result<()> {
-    let expr = bit_length(col("a"));
+    let expr = bit_length(vec![col("a")]);
 
     let expected = [
         "+--------------------+",
@@ -247,7 +247,7 @@ async fn test_fn_character_length() -> Result<()> {
 
 #[tokio::test]
 async fn test_fn_chr() -> Result<()> {
-    let expr = chr(lit(128175));
+    let expr = chr(vec![lit(128175)]);
 
     let expected = [
         "+--------------------+",

datafusion/functions/src/string/chr.rs

@@ -16,7 +16,6 @@
 // under the License.
 
 use std::any::Any;
-use std::iter;
 use std::sync::Arc;
 
 use arrow::array::ArrayRef;