getPreserveNullString()); $inputData = <<loadSpreadsheetFromString($inputData); $sheet = $spreadsheet->getActiveSheet(); self::assertSame($expected, $sheet->toArray()); $spreadsheet->disconnectWorksheets(); } public function testNullStringLoad(): void { $reader = new Csv(); $reader->setPreserveNullString(true); $inputData = <<loadSpreadsheetFromString($inputData); $sheet = $spreadsheet->getActiveSheet(); self::assertSame($expected, $sheet->toArray()); $spreadsheet->disconnectWorksheets(); } }