Encode ampersands in markdown code blocks (#3630)

* encode ampersands in markdown code blocks

* chore: add changeset

* nit: fixing test case description

1 files changed, 28 insertions, 1 deletions

diff --git a/packages/markdown/remark/test/expressions.test.js b/packages/markdown/remark/test/expressions.test.js
index fdf578923..0361e1df8 100644
--- a/packages/markdown/remark/test/expressions.test.js
+++ b/packages/markdown/remark/test/expressions.test.js
@@ -1,5 +1,5 @@
 import { renderMarkdown } from '../dist/index.js';
-import chai from 'chai';
+import chai, { expect } from 'chai';
 
 describe('expressions', () => {
 	it('should be able to serialize bare expression', async () => {
@@ -71,6 +71,33 @@ describe('expressions', () => {
 			);
 	});
 
+	it('should be able to encode ampersand characters in code blocks', async () => {
+		const { code } = await renderMarkdown(
+			'The ampersand in ` ` must be encoded in code blocks.',
+			{}
+		);
+
+		chai
+			.expect(code)
+			.to.equal(
+				'<p>The ampersand in <code is:raw>&amp;nbsp;</code> must be encoded in code blocks.</p>'
+			)
+	});
+
+	it('should be able to encode ampersand characters in fenced code blocks', async () => {
+		const { code } = await renderMarkdown(`
+		\`\`\`md
+			The ampersand in \`&nbsp;\` must be encoded in code blocks.
+		\`\`\`
+		`);
+
+		chai
+			.expect(code)
+			.to.match(
+				/^<pre is:raw.*<code>.*The ampersand in `&amp;nbsp;`/
+			);
+	})
+
 	it('should be able to serialize function expression', async () => {
 		const { code } = await renderMarkdown(
 			`{frontmatter.list.map(item => <p id={item}>{item}</p>)}`,