@Test
    public void testPoiFileCopy() {

        String inputFile = "test/input/データ.xls";
        String outputFile = "test/output/データ2.xls";
        try {
            FileInputStream fis = new FileInputStream(inputFile);
            HSSFWorkbook wb = new HSSFWorkbook(fis);
            FileOutputStream fos = new FileOutputStream(outputFile);
            // ブックを書き込む
            wb.write(fos);
            fos.close();
            wb.close();
            fis.close();

            assertTrue(Files.isSameFile(Paths.get(inputFile), Paths.get(outputFile)));

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
        }
    }