String result = markdownRenderer.render("Hello World");
        assertTrue(result.contains("Hello World"));
        assertTrue(result.contains("<p>"));
    }

    @Test
    public void test_render_bold() {
        String result = markdownRenderer.render("**bold text**");
        assertTrue(result.contains("<strong>bold text</strong>"));
    }

    @Test
    public void test_render_italic() {