Add test case for invalid tz in timestamp literal (apache#9429)

* Add test case for invalid tz in timestamp literal

* add a separate unit test

---------

Co-authored-by: Mohamed Abdeen <mohamed.abdeen@paytabs.com>

datafusion/functions/src/datetime/to_timestamp.rs

@@ -561,6 +561,31 @@ mod tests {
         Ok(())
     }
 
+    #[test]
+    fn to_timestamp_with_invalid_tz() -> Result<()> {
+        let mut date_string_builder = StringBuilder::with_capacity(2, 1024);
+
+        date_string_builder.append_null();
+
+        date_string_builder.append_value("2020-09-08T13:42:29ZZ");
+
+        let string_array =
+            ColumnarValue::Array(Arc::new(date_string_builder.finish()) as ArrayRef);
+
+        let expected_err =
+            "Arrow error: Parser error: Invalid timezone \"ZZ\": 'ZZ' is not a valid timezone";
+        match to_timestamp(&[string_array]) {
+            Ok(_) => panic!("Expected error but got success"),
+            Err(e) => {
+                assert!(
+                    e.to_string().contains(expected_err),
+                    "Can not find expected error '{expected_err}'. Actual error '{e}'"
+                );
+            }
+        }
+        Ok(())
+    }
+
     #[test]
     fn to_timestamp_with_no_matching_formats() -> Result<()> {
         let mut date_string_builder = StringBuilder::with_capacity(2, 1024);

datafusion/sqllogictest/test_files/timestamps.slt

@@ -465,6 +465,10 @@ SELECT TIME 'not a time' as time;
 query error Cannot cast string '24:01:02' to value of Time64\(Nanosecond\) type
 SELECT TIME '24:01:02' as time;
 
+# invalid timezone
+query error Arrow error: Parser error: Invalid timezone "ZZ": 'ZZ' is not a valid timezone
+SELECT TIMESTAMP '2023-12-05T21:58:10.45ZZ';
+
 statement ok
 set datafusion.optimizer.skip_failed_rules = true