diff --git a/tests/5_markdown_parser/test.js b/tests/5_markdown_parser/test.js
index 22860c4..e4d0266 100644
--- a/tests/5_markdown_parser/test.js
+++ b/tests/5_markdown_parser/test.js
@@ -6,14 +6,13 @@ export default {
 // - The function should handle: headers (h1-h6), bold, italic, links, code blocks, inline code, lists (ordered/unordered), and blockquotes.
 // - Return the resulting HTML string.`,
   runTest: async (parseMarkdown) => {
-    const assert = {
-      strictEqual: (a, e, m) => { if (a !== e) throw new Error(m || `FAIL: ${a} !== ${e}`) },
-    };
     const markdown = `# Hello World\n\nThis is **bold** and *italic*.\n\n- Item 1\n- Item 2\n\n\`\`\`js\nconst x = 5;\n\`\`\``;
     const html = await parseMarkdown(markdown);
-    if (!html.includes('<h1>') || !html.includes('<strong>') || !html.includes('<em>') || !html.includes('<ul>') || !html.includes('<code>')) {
-      throw new Error('Test Failed: HTML output missing required elements.');
+    const doc = new DOMParser().parseFromString(html, 'text/html');
+    const selectors = ['h1', 'strong', 'em', 'ul', 'code'];
+    const missing = selectors.find(s => !doc.querySelector(s));
+    if (missing) {
+      throw new Error(`Test Failed: HTML output missing required element: <${missing}>`);
     }
   }
 };
-