@Override
    public Date getDate(final int columnIndex) throws SQLException {
        return (Date) ResultSetUtils.convertValue(mergeResultSet.getValue(columnIndex, Date.class), Date.class);
    }
@Test
    void assertGetDateWithColumnIndex() throws SQLException {
        when(mergeResultSet.getValue(1, Date.class)).thenReturn(new Date(0L));
        assertThat(shardingSphereResultSet.getDate(1), is(new Date(0L)));
    }