assertNotNull(result);
        assertEquals("ファイル名-2024年.docx", result.getContent());
    }

    /**
     * Test extraction with very long filename.
     */
    public void test_getText_withLongFilename() {
        final InputStream in = new ByteArrayInputStream(new byte[0]);
        final StringBuilder longName = new StringBuilder();
        for (int i = 0; i < 255; i++) {
            longName.append('a');