chromium/third_party/blink/web_tests/fast/media/mq-invalid-syntax-05.html

<html>
<head>
<title>CSS3 media query test: syntactically invalid media query inside css rule should eval to false (,,,,). Using style element, css import rule.</title>
<link rel="help" href="http://www.w3.org/TR/css3-mediaqueries/">

<!-- this test shows that there is no disconnect between CSS media queries and HTML5 media descriptors -->
<style type="text/css" media=",,,,,,">
p { color: green }
</styl>
<style type="text/css">
@import url(import-p-red.css) all,,,,,,;

</style>
</head>
<body>
<p> This text should be neither green nor red.</p>
</body>
</html>