getActiveSheet(); $sheet->fromArray($values); $reloadedSpreadsheet = $this->writeAndReload($spreadsheet, $format); $reloadedSheet = $reloadedSpreadsheet->getActiveSheet(); $expected = $sheet->getCell('A1')->getCalculatedValue(); if ($sheet->getCell('A1')->getDataType() === 'f') { $actual = $reloadedSheet->getCell('A1')->getOldCalculatedValue(); } else { $actual = $reloadedSheet->getCell('A1')->getValue(); } self::assertSame($expected, $actual); } }