getActiveSheet(); $sheet->setPrintGridlines(true); $sheet->getStyle('A7')->getAlignment()->setTextRotation(90); $sheet->setCellValue('A7', 'Lorem Ipsum'); $writer = new Html($spreadsheet); $html = $writer->generateHtmlAll(); self::assertStringContainsString(' transform:rotate(90deg);', $html); $spreadsheet->disconnectWorksheets(); unset($spreadsheet); } }