@Test
void getString() throws SQLException {

    assertEquals(RS_STRING.getValue(), ResultSetUtil.getString(RESULT_SET, RS_STRING.getLabel()));
    assertEquals(RS_STRING.getValue(), ResultSetUtil.getString(RESULT_SET, RS_STRING.getIndex()));
    assertNull(ResultSetUtil.getString(NULL_RESULT_SET, RS_STRING.getLabel()));
    assertNull(ResultSetUtil.getString(NULL_RESULT_SET, RS_STRING.getIndex()));
}