chromium/third_party/blink/web_tests/fast/css/parsing-css-comment.html

<head>
<style>
#a { color: green; }
/*
  Normal multiline comment
*/
#b { color: green; }
/*
#c { color: green; }
*/

/* Single line comment */
/* #d { color: green; } */
#e { color: green; }

/*/ Comment start with slash */
/*/ #f { color: green; } */

/* #g is valid: */
/**/ #g { color: green; } */
#h { color: green; }
/**/#i/**/{/**/color/**/:/**/green/**/;/**/}

/* Unterminated comment. Should not crash.
</style>

<script>

function runTest()
{
    if (window.testRunner)
        testRunner.dumpAsText();

    var rules = document.styleSheets[0].cssRules;
    var text = "";
    for (var i = 0; i < rules.length; i++) {
        text += rules.item(i).cssText;
        text += "\n";
    }

    document.getElementById("result").appendChild(document.createTextNode(text));

    if (document.getElementById("result").firstChild.data === document.getElementById("expected").firstChild.data)
        document.getElementById("message").firstChild.data = "SUCCESS";
    else
        document.getElementById("message").firstChild.data = "FAILURE";
}

</script>

</head>

<body onload="runTest()">

<p>Test parsing of CSS nth-child tokens.</p>

<p id="message">TEST DID NOT COMPLETE</p>

<p>Rules from the stylesheet:</p>

<pre id="result"></pre>

<p>Expected result:</p>

<pre id="expected">#a { color: green; }
#b { color: green; }
#e { color: green; }
#g { color: green; }
#i { color: green; }
</pre>

<script>

</script>
</body>