chromium/third_party/blink/web_tests/external/wpt/html/semantics/document-metadata/the-link-element/link-load-event.html

<!DOCTYPE html>
<link rel="author" title="Josh Matthews" href="mailto:[email protected]">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-link-element">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
var saw_link_onload = false;
var t = async_test("Check if the stylesheet's load event blocks the document load event");
window.addEventListener('load', t.step_func_done(function() {
  assert_true(saw_link_onload);
}));
</script>
<link href="style.css?pipe=trickle(d3)" rel="stylesheet" id="style_test"
      onload="t.step(function() { saw_link_onload = true; })"
      onerror="t.unreached_func('Sheet should load OK')">
</head>
</html>