@Test
public void detect_new_excel_version() throws Exception {

    InputStream inputStream = getClass().getResourceAsStream("Workbook-xlsx.xlsx");
    Assertions.assertThat(XlsUtils.isNewExcelFormat(inputStream)).isTrue();
    inputStream = getClass().getResourceAsStream("Workbook-xls.xls");
    Assertions.assertThat(XlsUtils.isNewExcelFormat(inputStream)).isFalse();
}