.getDataFormat()));         assertTrue(DateUtil.isADateFormat(style.getDataFormat(), style.getDataFormatString()));         assertTrue(DateUtil.isCellDateFormatted(cell));          row  = sheet.getRow(0);         cell = row.getCell(0);         style = cell.getCellStyle();         assertEquals(aug_00_0000, cell.getNumericCellValue(), 0.0000);         assertFalse(DateUtil.isInternalDateFormat(cell.getCellStyle().getDataFormat()));         assertTrue(DateUtil.isADateFormat(style.getDataFormat(), style.getDataFormatString()));         assertTrue(DateUtil.isCellDateFormatted(cell));          row  = sheet.getRow(0);         cell = row.getCell(0);         style = cell.getCellStyle();         assertEquals(aug_00_0000, cell.getNumericCellValue(), 0.0000);         assertTrue(DateUtil.isInternalDateFormat(cell.getCellStyle().getDataFormat()));         assertTrue(DateUtil.isADateFormat(style.getDataFormat(), style.getDataFormatString()));         assertTrue(DateUtil.isCellDateFormatted(cell));          row  = sheet.getRow(0);         cell = row.getCell(0);         style = cell.getCellStyle();         assertEquals(aug_00_0000, cell.getNumericCellValue(), 0.0000);         assertFalse(DateUtil.isInternalDateFormat(cell.getCellStyle().getDataFormat()));         assertTrue(DateUtil.isADateFormat(style.getDataFormat(), style.getDataFormatString()));         assertTrue(DateUtil.isCellDateFormatted(cell));          row  = sheet.getRow(0);         cell = row.getCell(0);         style = cell.getCellStyle();         assertEquals(aug_00_0000, cell.getNumericCellValue(), 0.0000);         assertFalse(DateUtil.isInternalDateFormat(cell.getCellStyle().getDataFormat()));         assertTrue(DateUtil.isADateFormat(style.getDataFormat(), style.getDataFormatString()));         assertTrue(DateUtil.isCellDateFormatted(cell));          