assertEquals("The inputstream is null.", e.getMessage());
        }
    }

    /**
     * Test extraction with filename containing special characters.
     */
    public void test_getText_withSpecialCharactersInFilename() {
        final InputStream in = new ByteArrayInputStream(new byte[0]);
        final Map<String, String> params = new HashMap<>();
        params.put(ExtractData.RESOURCE_NAME_KEY, "ファイル名-2024年.docx");