assertTrue("Should contain line 9999", result.getContent().contains("Line 9999"));
    }

    /**
     * Test extraction with various Unicode characters.
     */
    public void test_getText_unicodeContent_extractsCorrectly() {
        final String unicodeContent = "Hello 世界 مرحبا мир שלום";
        final InputStream in = new ByteArrayInputStream(unicodeContent.getBytes());