<!DOCTYPE HTML>
<html>
<head>
<title>Test download attribute for data: URI</title>
</head>
<body>
<a href="data:text/html,<body>data download</body>" download="data-foo.html" id="testlink">download data</a>
<script>
// click the link to have the downoad panel appear
let testlink = document.getElementById("testlink");
testlink.click();
</script>
</body>
</html>