chromium/third_party/blink/web_tests/fast/dom/HTMLLinkElement/link-onload.html

<!DOCTYPE html>
<html>
<head>
<script src="resources/link-load-utilities.js"></script>
<link rel="stylesheet" href="resources/stylesheet.css" onload="testPassedAndNotifyDone('Fired Load event.')" onerror="testFailedAndNotifyDone('Fired Error event. Should have fired Load event.')">
</head>
<body>
<p>This tests that a Load event is fired at an HTML Link element once it loads a style sheet. This test PASSED if you see the word PASS below. Otherwise, it FAILED.</p>
<pre id="console"></pre>
</body>
</html>