EXTRACT function not working in CSVTest

According to this doc https://calcite.apache.org/docs/reference.html the EXTRACT function should work in Calcite. So I'm trying a query with EXTRACT in CSVTest:

@Test public void testSelectx() throws SQLException {
checkSql("model", "select extract(year from JOINEDAT) from EMPS ");
}
the query failed due to:

java.lang.ClassCastException: java.sql.Date cannot be cast to java.lang.Integer

I also tried to change column JOINDAT's type to timestamp and datetime, but end up with similar exceptions.