String result = markdownRenderer.render(malicious);
        // style tags should be removed
        assertFalse(result.contains("<style>"));
    }

    @Test
    public void test_render_multipleNewlines() {
        String markdown = "Line 1\n\nLine 2\n\nLine 3";
        String result = markdownRenderer.render(markdown);
        // Should create multiple paragraphs
        assertTrue(result.contains("Line 1"));