chore: import upstream snapshot with attribution

tools/challenge-parser/parser/plugins/utils/mdast-to-html.test.js

@@ -0,0 +1,42 @@
+import { describe, beforeAll, it, expect } from 'vitest';
+import parseFixture from '../../__fixtures__/parse-fixture';
+import mdastToHTML from './mdast-to-html';
+
+describe('mdast-to-html', () => {
+  let mdastMixedNodes, singleNode, inlineHTMLNodes;
+
+  beforeAll(async () => {
+    const mdastMixedAST = await parseFixture('mixed-nodes.md');
+    const mdastInlineHTMLAST = await parseFixture('inline-html.md');
+    mdastMixedNodes = mdastMixedAST.children;
+    singleNode = mdastMixedAST.children[0];
+    inlineHTMLNodes = mdastInlineHTMLAST.children;
+  });
+
+  it('should return a string', () => {
+    expect.assertions(1);
+    const actual = mdastToHTML(mdastMixedNodes);
+    expect(typeof actual).toBe('string');
+  });
+
+  it('throws if it is not passed an array', () => {
+    expect.assertions(1);
+    expect(() => mdastToHTML(singleNode)).toThrow(
+      'mdastToHTML expects an array argument'
+    );
+  });
+
+  it('should not escape html', () => {
+    const actual = mdastToHTML(mdastMixedNodes);
+    expect(actual).toBe(`<p>Paragraph 1</p>
+<p>Third <em>hint</em> with <code>code</code> and <code>inline code</code></p>`);
+  });
+
+  it('should put inline html inside the enclosing paragraph', () => {
+    const actual = mdastToHTML(inlineHTMLNodes);
+    expect(actual).toBe(
+      '<p><code> code in </code> code tags <em>emphasis</em> followed' +
+        ' by <div><span>some nested html </span></div></p>'
+    );
+  });
+});