chore: add unit test for YoutubeEmbed component

package.json

@@ -95,7 +95,7 @@
   "scripts": {
     "clean": "rm -rf node_modules yarn.lock",
     "refresh": "yarn clean && yarn",
-    "test": "jest",
+    "test": "jest --coverage",
     "dev": "yarn prebuild && next dev",
     "spellcheck": "cspell \"src/**/*.mdx\" --no-progress",
     "spellcheck-diff": "git diff --name-only --cached | awk \"/src.*\\.mdx/{print}\" | npx cspell --no-must-find-files --file-list stdin",

src/components/YoutubeEmbed/__tests__/YoutubeEmbed.test.tsx

@@ -0,0 +1,21 @@
+import * as React from 'react';
+import { render, screen } from '@testing-library/react';
+import { YoutubeEmbed } from '../index';
+
+describe('YoutubeEmbed', () => {
+  const embedId = 'uaG2mMYLI68';
+  const component = <YoutubeEmbed embedId={embedId} />;
+  it('should render the YoutubeEmbed component', async () => {
+    render(component);
+    const iframe = await screen.getByTitle('YouTube video player');
+    expect(iframe).toBeInTheDocument();
+  });
+
+  it('should be sized to 560w by 315h', async () => {
+    render(component);
+    const iframe = await screen.getByTitle('YouTube video player');
+    expect(iframe.getAttribute('style')).toEqual(
+      '--youtube-embed-width: 560; --youtube-embed-height: 315;'
+    );
+  });
+});